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/20170304-DifficultPathPrograms/nested.c_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:25:36,795 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:25:36,797 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:25:36,809 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:25:36,810 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:25:36,811 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:25:36,812 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:25:36,814 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:25:36,815 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:25:36,816 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:25:36,817 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 15:25:36,817 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 15:25:36,818 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 15:25:36,820 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 15:25:36,823 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 15:25:36,824 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 15:25:36,825 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 15:25:36,829 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 15:25:36,835 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 15:25:36,839 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 15:25:36,840 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 15:25:36,841 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 15:25:36,847 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 15:25:36,847 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 15:25:36,847 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 15:25:36,851 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 15:25:36,853 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 15:25:36,853 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 15:25:36,854 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 15:25:36,857 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 15:25:36,858 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 15:25:36,860 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 15:25:36,863 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 15:25:36,890 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:25:36,891 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:25:36,892 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:25:36,896 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:25:36,897 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:25:36,897 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:25:36,897 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:25:36,897 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:25:36,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:25:36,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:25:36,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:25:37,001 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:25:37,002 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:25:37,003 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.c_4.bpl [2018-07-23 15:25:37,004 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.c_4.bpl' [2018-07-23 15:25:37,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:25:37,075 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:25:37,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:25:37,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:25:37,076 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:25:37,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:25:37" (1/1) ... [2018-07-23 15:25:37,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:25:37" (1/1) ... [2018-07-23 15:25:37,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:25:37" (1/1) ... [2018-07-23 15:25:37,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:25:37" (1/1) ... [2018-07-23 15:25:37,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:25:37" (1/1) ... [2018-07-23 15:25:37,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:25:37" (1/1) ... [2018-07-23 15:25:37,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:25:37" (1/1) ... [2018-07-23 15:25:37,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:25:37,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:25:37,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:25:37,132 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:25:37,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:25:37" (1/1) ... [2018-07-23 15:25:37,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 15:25:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 15:25:37,355 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 15:25:37,356 INFO L202 PluginConnector]: Adding new model nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:25:37 BoogieIcfgContainer [2018-07-23 15:25:37,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:25:37,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:25:37,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:25:37,362 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:25:37,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:25:37" (1/2) ... [2018-07-23 15:25:37,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37421b6e and model type nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:25:37, skipping insertion in model container [2018-07-23 15:25:37,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:25:37" (2/2) ... [2018-07-23 15:25:37,368 INFO L112 eAbstractionObserver]: Analyzing ICFG nested.c_4.bpl [2018-07-23 15:25:37,378 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:25:37,389 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 15:25:37,446 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:25:37,447 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:25:37,447 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:25:37,447 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:25:37,447 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:25:37,447 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:25:37,448 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:25:37,448 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:25:37,448 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:25:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 15:25:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:25:37,476 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:37,477 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:25:37,478 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-23 15:25:37,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:37,570 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 15:25:37,573 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:25:37,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 15:25:37,578 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 15:25:37,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 15:25:37,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:25:37,598 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-23 15:25:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:37,626 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-23 15:25:37,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 15:25:37,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-23 15:25:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:37,641 INFO L225 Difference]: With dead ends: 10 [2018-07-23 15:25:37,641 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 15:25:37,645 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 15:25:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 15:25:37,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 15:25:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 15:25:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 15:25:37,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 15:25:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:37,686 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 15:25:37,686 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 15:25:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 15:25:37,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 15:25:37,687 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:37,687 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 15:25:37,688 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:37,688 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-23 15:25:37,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:37,729 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 15:25:37,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:37,730 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 15:25:37,735 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:25:37,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:25:37,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:25:37,737 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-23 15:25:37,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:37,760 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-23 15:25:37,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:25:37,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-23 15:25:37,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:37,762 INFO L225 Difference]: With dead ends: 11 [2018-07-23 15:25:37,762 INFO L226 Difference]: Without dead ends: 9 [2018-07-23 15:25:37,764 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 15:25:37,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-23 15:25:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-23 15:25:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 15:25:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-23 15:25:37,768 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-23 15:25:37,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:37,768 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-23 15:25:37,768 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:25:37,769 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-23 15:25:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 15:25:37,769 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:37,770 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-23 15:25:37,770 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-23 15:25:37,771 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:37,814 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 15:25:37,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:37,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:25:37,815 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:25:37,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:25:37,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:25:37,818 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-07-23 15:25:37,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:37,855 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-23 15:25:37,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:25:37,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-23 15:25:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:37,856 INFO L225 Difference]: With dead ends: 13 [2018-07-23 15:25:37,856 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 15:25:37,857 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:25:37,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 15:25:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 15:25:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 15:25:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-23 15:25:37,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-23 15:25:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:37,862 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-23 15:25:37,862 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:25:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-23 15:25:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:25:37,862 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:37,863 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-23 15:25:37,863 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:37,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-07-23 15:25:37,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:37,910 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 15:25:37,910 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:37,910 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:25:37,911 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:25:37,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:25:37,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:25:37,912 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-07-23 15:25:37,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:37,933 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-23 15:25:37,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:25:37,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-23 15:25:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:37,935 INFO L225 Difference]: With dead ends: 15 [2018-07-23 15:25:37,935 INFO L226 Difference]: Without dead ends: 13 [2018-07-23 15:25:37,936 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:25:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-23 15:25:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-23 15:25:37,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-23 15:25:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-23 15:25:37,940 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-23 15:25:37,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:37,941 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-23 15:25:37,941 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:25:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-23 15:25:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:25:37,942 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:37,942 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-23 15:25:37,942 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:37,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-07-23 15:25:37,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:38,029 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 15:25:38,030 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:38,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:25:38,031 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:25:38,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:25:38,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:25:38,031 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-07-23 15:25:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:38,071 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-23 15:25:38,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 15:25:38,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-23 15:25:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:38,072 INFO L225 Difference]: With dead ends: 17 [2018-07-23 15:25:38,072 INFO L226 Difference]: Without dead ends: 15 [2018-07-23 15:25:38,073 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:25:38,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-23 15:25:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-23 15:25:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-23 15:25:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-23 15:25:38,078 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-23 15:25:38,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:38,078 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-23 15:25:38,078 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:25:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-23 15:25:38,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:25:38,079 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:38,079 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-23 15:25:38,079 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:38,080 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-07-23 15:25:38,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:38,122 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 15:25:38,123 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:38,123 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:25:38,124 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:25:38,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:25:38,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:25:38,125 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-07-23 15:25:38,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:38,158 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-23 15:25:38,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 15:25:38,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-23 15:25:38,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:38,159 INFO L225 Difference]: With dead ends: 19 [2018-07-23 15:25:38,160 INFO L226 Difference]: Without dead ends: 17 [2018-07-23 15:25:38,162 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:25:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-23 15:25:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-23 15:25:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-23 15:25:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-23 15:25:38,171 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-23 15:25:38,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:38,173 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-23 15:25:38,173 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:25:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-23 15:25:38,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:25:38,174 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:38,174 INFO L353 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-23 15:25:38,175 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:38,175 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-07-23 15:25:38,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:38,243 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 15:25:38,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:38,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:25:38,244 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:25:38,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:25:38,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:25:38,245 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-07-23 15:25:38,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:38,268 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-23 15:25:38,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:25:38,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:25:38,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:38,269 INFO L225 Difference]: With dead ends: 21 [2018-07-23 15:25:38,270 INFO L226 Difference]: Without dead ends: 19 [2018-07-23 15:25:38,270 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:25:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-23 15:25:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-23 15:25:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-23 15:25:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-23 15:25:38,279 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-23 15:25:38,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:38,279 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-23 15:25:38,280 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:25:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-23 15:25:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:25:38,280 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:38,281 INFO L353 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-23 15:25:38,281 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:38,281 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-07-23 15:25:38,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:38,330 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 15:25:38,330 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:38,330 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:25:38,331 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:25:38,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:25:38,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:25:38,332 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-07-23 15:25:38,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:38,367 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-23 15:25:38,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:25:38,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-23 15:25:38,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:38,368 INFO L225 Difference]: With dead ends: 23 [2018-07-23 15:25:38,369 INFO L226 Difference]: Without dead ends: 21 [2018-07-23 15:25:38,369 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:25:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-23 15:25:38,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-23 15:25:38,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-23 15:25:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-23 15:25:38,379 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-23 15:25:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:38,380 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-23 15:25:38,380 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:25:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-23 15:25:38,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:25:38,381 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:38,381 INFO L353 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-23 15:25:38,381 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:38,383 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-07-23 15:25:38,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:38,458 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 15:25:38,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:38,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:25:38,461 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:25:38,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:25:38,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:25:38,463 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-07-23 15:25:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:38,499 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-23 15:25:38,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:25:38,500 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-23 15:25:38,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:38,504 INFO L225 Difference]: With dead ends: 25 [2018-07-23 15:25:38,504 INFO L226 Difference]: Without dead ends: 23 [2018-07-23 15:25:38,505 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:25:38,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-23 15:25:38,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-23 15:25:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-23 15:25:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-23 15:25:38,515 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-23 15:25:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:38,515 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-23 15:25:38,516 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:25:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-23 15:25:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:25:38,519 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:38,520 INFO L353 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-23 15:25:38,520 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:38,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-07-23 15:25:38,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:38,615 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 15:25:38,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:38,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:25:38,617 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:25:38,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:25:38,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:25:38,621 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-07-23 15:25:38,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:38,669 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-23 15:25:38,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 15:25:38,669 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-23 15:25:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:38,673 INFO L225 Difference]: With dead ends: 27 [2018-07-23 15:25:38,673 INFO L226 Difference]: Without dead ends: 25 [2018-07-23 15:25:38,674 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:25:38,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-23 15:25:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-23 15:25:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-23 15:25:38,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-23 15:25:38,685 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-23 15:25:38,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:38,686 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-23 15:25:38,686 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:25:38,686 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-23 15:25:38,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:25:38,688 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:38,688 INFO L353 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-23 15:25:38,689 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:38,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-07-23 15:25:38,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:38,753 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 15:25:38,754 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:38,754 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-23 15:25:38,754 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:25:38,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:25:38,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:25:38,757 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-07-23 15:25:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:38,801 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-23 15:25:38,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:25:38,802 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-23 15:25:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:38,803 INFO L225 Difference]: With dead ends: 29 [2018-07-23 15:25:38,803 INFO L226 Difference]: Without dead ends: 27 [2018-07-23 15:25:38,808 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:25:38,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-23 15:25:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-23 15:25:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-23 15:25:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-23 15:25:38,819 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-23 15:25:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:38,821 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-23 15:25:38,822 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:25:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-23 15:25:38,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:25:38,822 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:38,823 INFO L353 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-23 15:25:38,823 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:38,823 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-07-23 15:25:38,823 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:38,869 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 15:25:38,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:38,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-23 15:25:38,870 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-23 15:25:38,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-23 15:25:38,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:25:38,872 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-07-23 15:25:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:38,893 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-23 15:25:38,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:25:38,896 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-23 15:25:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:38,897 INFO L225 Difference]: With dead ends: 31 [2018-07-23 15:25:38,897 INFO L226 Difference]: Without dead ends: 29 [2018-07-23 15:25:38,898 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:25:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-23 15:25:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-23 15:25:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-23 15:25:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-23 15:25:38,906 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-23 15:25:38,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:38,907 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-23 15:25:38,907 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-23 15:25:38,907 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-23 15:25:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 15:25:38,910 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:38,911 INFO L353 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-23 15:25:38,911 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:38,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-07-23 15:25:38,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:38,979 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 15:25:38,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:38,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-23 15:25:38,980 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-23 15:25:38,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-23 15:25:38,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:25:38,982 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-07-23 15:25:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:39,017 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-23 15:25:39,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:25:39,018 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-23 15:25:39,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:39,019 INFO L225 Difference]: With dead ends: 33 [2018-07-23 15:25:39,019 INFO L226 Difference]: Without dead ends: 31 [2018-07-23 15:25:39,020 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:25:39,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-23 15:25:39,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-23 15:25:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-23 15:25:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-23 15:25:39,031 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-23 15:25:39,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:39,034 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-23 15:25:39,034 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-23 15:25:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-23 15:25:39,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-23 15:25:39,036 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:39,036 INFO L353 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-23 15:25:39,036 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:39,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-07-23 15:25:39,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:39,110 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 15:25:39,110 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:39,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-23 15:25:39,111 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-23 15:25:39,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-23 15:25:39,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:25:39,112 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-07-23 15:25:39,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:39,131 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-23 15:25:39,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:25:39,131 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-23 15:25:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:39,132 INFO L225 Difference]: With dead ends: 35 [2018-07-23 15:25:39,132 INFO L226 Difference]: Without dead ends: 33 [2018-07-23 15:25:39,133 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:25:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-23 15:25:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-23 15:25:39,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-23 15:25:39,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-23 15:25:39,138 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-23 15:25:39,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:39,139 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-23 15:25:39,139 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-23 15:25:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-23 15:25:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-23 15:25:39,140 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:39,140 INFO L353 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-23 15:25:39,141 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:39,141 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-07-23 15:25:39,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:39,199 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 15:25:39,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:39,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-23 15:25:39,200 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 15:25:39,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 15:25:39,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:25:39,202 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-07-23 15:25:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:39,224 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-23 15:25:39,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:25:39,225 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-23 15:25:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:39,227 INFO L225 Difference]: With dead ends: 37 [2018-07-23 15:25:39,227 INFO L226 Difference]: Without dead ends: 35 [2018-07-23 15:25:39,228 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:25:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-23 15:25:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-23 15:25:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-23 15:25:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-23 15:25:39,235 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-23 15:25:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:39,240 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-23 15:25:39,241 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 15:25:39,241 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-23 15:25:39,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-23 15:25:39,242 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:39,242 INFO L353 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-23 15:25:39,242 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:39,243 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-07-23 15:25:39,243 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:39,315 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 15:25:39,316 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:39,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-23 15:25:39,316 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-23 15:25:39,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-23 15:25:39,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:25:39,321 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-07-23 15:25:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:39,352 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-23 15:25:39,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:25:39,356 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-23 15:25:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:39,356 INFO L225 Difference]: With dead ends: 39 [2018-07-23 15:25:39,357 INFO L226 Difference]: Without dead ends: 37 [2018-07-23 15:25:39,358 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:25:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-23 15:25:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-23 15:25:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-23 15:25:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-23 15:25:39,367 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-23 15:25:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:39,367 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-23 15:25:39,367 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-23 15:25:39,368 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-23 15:25:39,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-23 15:25:39,369 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:39,369 INFO L353 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-23 15:25:39,369 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:39,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-07-23 15:25:39,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:39,434 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 15:25:39,434 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:39,434 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-23 15:25:39,435 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-23 15:25:39,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-23 15:25:39,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:25:39,436 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-07-23 15:25:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:39,457 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-23 15:25:39,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:25:39,458 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-23 15:25:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:39,459 INFO L225 Difference]: With dead ends: 41 [2018-07-23 15:25:39,459 INFO L226 Difference]: Without dead ends: 39 [2018-07-23 15:25:39,460 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:25:39,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-23 15:25:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-23 15:25:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-23 15:25:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-23 15:25:39,471 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-23 15:25:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:39,472 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-23 15:25:39,472 INFO L472 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-23 15:25:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-23 15:25:39,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-23 15:25:39,473 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:39,473 INFO L353 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-23 15:25:39,475 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:39,476 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-07-23 15:25:39,476 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:39,562 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 15:25:39,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:39,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-23 15:25:39,563 INFO L450 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-23 15:25:39,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-23 15:25:39,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:25:39,564 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-07-23 15:25:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:39,585 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-23 15:25:39,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:25:39,586 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-23 15:25:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:39,587 INFO L225 Difference]: With dead ends: 43 [2018-07-23 15:25:39,587 INFO L226 Difference]: Without dead ends: 41 [2018-07-23 15:25:39,588 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:25:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-23 15:25:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-23 15:25:39,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-23 15:25:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-23 15:25:39,603 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-23 15:25:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:39,604 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-23 15:25:39,604 INFO L472 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-23 15:25:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-23 15:25:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-23 15:25:39,605 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:39,605 INFO L353 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-23 15:25:39,605 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:39,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-07-23 15:25:39,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:39,696 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 15:25:39,697 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:39,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-23 15:25:39,698 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-23 15:25:39,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-23 15:25:39,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:25:39,700 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-07-23 15:25:39,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:39,734 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-23 15:25:39,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:25:39,735 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-23 15:25:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:39,738 INFO L225 Difference]: With dead ends: 45 [2018-07-23 15:25:39,738 INFO L226 Difference]: Without dead ends: 43 [2018-07-23 15:25:39,739 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:25:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-23 15:25:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-23 15:25:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-23 15:25:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-23 15:25:39,744 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-23 15:25:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:39,744 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-23 15:25:39,745 INFO L472 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-23 15:25:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-23 15:25:39,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-23 15:25:39,746 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:39,747 INFO L353 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-23 15:25:39,747 INFO L414 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:39,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-07-23 15:25:39,748 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:39,847 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 15:25:39,847 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:39,847 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-23 15:25:39,848 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-23 15:25:39,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-23 15:25:39,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:25:39,849 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-07-23 15:25:39,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:39,873 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-23 15:25:39,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:25:39,875 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-23 15:25:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:39,876 INFO L225 Difference]: With dead ends: 47 [2018-07-23 15:25:39,876 INFO L226 Difference]: Without dead ends: 45 [2018-07-23 15:25:39,877 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:25:39,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-23 15:25:39,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-23 15:25:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-23 15:25:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-23 15:25:39,893 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-23 15:25:39,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:39,893 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-23 15:25:39,895 INFO L472 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-23 15:25:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-23 15:25:39,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-23 15:25:39,896 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:39,896 INFO L353 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-23 15:25:39,896 INFO L414 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:39,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-07-23 15:25:39,898 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:39,988 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 15:25:39,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:39,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-23 15:25:39,990 INFO L450 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-23 15:25:39,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-23 15:25:39,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:25:39,991 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-07-23 15:25:40,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:40,013 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-23 15:25:40,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:25:40,013 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-23 15:25:40,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:40,014 INFO L225 Difference]: With dead ends: 49 [2018-07-23 15:25:40,014 INFO L226 Difference]: Without dead ends: 47 [2018-07-23 15:25:40,015 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:25:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-23 15:25:40,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-23 15:25:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-23 15:25:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-23 15:25:40,024 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-23 15:25:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:40,025 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-23 15:25:40,025 INFO L472 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-23 15:25:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-23 15:25:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-23 15:25:40,026 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:40,026 INFO L353 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-23 15:25:40,026 INFO L414 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:40,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-07-23 15:25:40,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:40,164 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 15:25:40,165 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:40,165 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-23 15:25:40,165 INFO L450 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-23 15:25:40,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-23 15:25:40,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:25:40,167 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-07-23 15:25:40,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:40,186 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-23 15:25:40,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:25:40,187 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-23 15:25:40,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:40,188 INFO L225 Difference]: With dead ends: 51 [2018-07-23 15:25:40,188 INFO L226 Difference]: Without dead ends: 49 [2018-07-23 15:25:40,189 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:25:40,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-23 15:25:40,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-23 15:25:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-23 15:25:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-23 15:25:40,195 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-23 15:25:40,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:40,196 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-23 15:25:40,196 INFO L472 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-23 15:25:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-23 15:25:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-23 15:25:40,197 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:40,197 INFO L353 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-23 15:25:40,197 INFO L414 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:40,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-07-23 15:25:40,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:40,319 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 15:25:40,320 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:40,320 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-23 15:25:40,320 INFO L450 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-23 15:25:40,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-23 15:25:40,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:25:40,322 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-07-23 15:25:40,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:40,344 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-23 15:25:40,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:25:40,345 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-23 15:25:40,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:40,346 INFO L225 Difference]: With dead ends: 53 [2018-07-23 15:25:40,346 INFO L226 Difference]: Without dead ends: 51 [2018-07-23 15:25:40,347 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:25:40,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-23 15:25:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-23 15:25:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-23 15:25:40,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-23 15:25:40,361 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-23 15:25:40,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:40,362 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-23 15:25:40,362 INFO L472 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-23 15:25:40,362 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-23 15:25:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-23 15:25:40,363 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:40,363 INFO L353 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-23 15:25:40,363 INFO L414 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:40,366 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-07-23 15:25:40,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:40,480 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 15:25:40,480 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:40,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-23 15:25:40,481 INFO L450 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-23 15:25:40,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-23 15:25:40,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:25:40,483 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-07-23 15:25:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:40,508 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-23 15:25:40,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-23 15:25:40,508 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-23 15:25:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:40,509 INFO L225 Difference]: With dead ends: 55 [2018-07-23 15:25:40,509 INFO L226 Difference]: Without dead ends: 53 [2018-07-23 15:25:40,510 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:25:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-23 15:25:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-23 15:25:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-23 15:25:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-23 15:25:40,516 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-23 15:25:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:40,516 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-23 15:25:40,517 INFO L472 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-23 15:25:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-23 15:25:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-23 15:25:40,517 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:40,517 INFO L353 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-23 15:25:40,518 INFO L414 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:40,518 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-07-23 15:25:40,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:40,662 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 15:25:40,663 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:40,663 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-23 15:25:40,663 INFO L450 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-23 15:25:40,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-23 15:25:40,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:25:40,665 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-07-23 15:25:40,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:40,692 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-23 15:25:40,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:25:40,695 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-23 15:25:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:40,696 INFO L225 Difference]: With dead ends: 57 [2018-07-23 15:25:40,696 INFO L226 Difference]: Without dead ends: 55 [2018-07-23 15:25:40,697 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:25:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-23 15:25:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-23 15:25:40,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-23 15:25:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-23 15:25:40,708 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-23 15:25:40,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:40,708 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-23 15:25:40,708 INFO L472 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-23 15:25:40,708 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-23 15:25:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-23 15:25:40,709 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:40,709 INFO L353 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-23 15:25:40,713 INFO L414 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-07-23 15:25:40,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:40,833 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 15:25:40,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:40,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-23 15:25:40,835 INFO L450 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-23 15:25:40,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-23 15:25:40,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:25:40,837 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-07-23 15:25:40,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:40,868 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-23 15:25:40,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:25:40,868 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-23 15:25:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:40,869 INFO L225 Difference]: With dead ends: 59 [2018-07-23 15:25:40,869 INFO L226 Difference]: Without dead ends: 57 [2018-07-23 15:25:40,870 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:25:40,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-23 15:25:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-23 15:25:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-23 15:25:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-23 15:25:40,878 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-23 15:25:40,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:40,879 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-23 15:25:40,879 INFO L472 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-23 15:25:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-23 15:25:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-23 15:25:40,879 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:40,880 INFO L353 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-23 15:25:40,880 INFO L414 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:40,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-07-23 15:25:40,880 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:41,017 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 15:25:41,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:41,018 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-23 15:25:41,018 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-23 15:25:41,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-23 15:25:41,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:25:41,019 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-07-23 15:25:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:41,051 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-23 15:25:41,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:25:41,051 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-23 15:25:41,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:41,052 INFO L225 Difference]: With dead ends: 61 [2018-07-23 15:25:41,052 INFO L226 Difference]: Without dead ends: 59 [2018-07-23 15:25:41,053 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:25:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-23 15:25:41,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-23 15:25:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-23 15:25:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-23 15:25:41,057 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-23 15:25:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:41,058 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-23 15:25:41,058 INFO L472 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-23 15:25:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-23 15:25:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-23 15:25:41,059 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:41,059 INFO L353 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-23 15:25:41,059 INFO L414 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:41,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-07-23 15:25:41,061 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:41,196 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 15:25:41,197 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:41,197 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-23 15:25:41,198 INFO L450 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-23 15:25:41,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-23 15:25:41,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:25:41,199 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-07-23 15:25:41,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:41,233 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-23 15:25:41,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:25:41,233 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-23 15:25:41,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:41,234 INFO L225 Difference]: With dead ends: 63 [2018-07-23 15:25:41,234 INFO L226 Difference]: Without dead ends: 61 [2018-07-23 15:25:41,235 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:25:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-23 15:25:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-23 15:25:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-23 15:25:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-23 15:25:41,239 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-23 15:25:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:41,239 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-23 15:25:41,239 INFO L472 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-23 15:25:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-23 15:25:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-23 15:25:41,240 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:41,240 INFO L353 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-23 15:25:41,240 INFO L414 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:41,241 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-07-23 15:25:41,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:41,385 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 15:25:41,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:41,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-23 15:25:41,387 INFO L450 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-23 15:25:41,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-23 15:25:41,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:25:41,388 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-07-23 15:25:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:41,467 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-23 15:25:41,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-23 15:25:41,467 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-23 15:25:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:41,468 INFO L225 Difference]: With dead ends: 65 [2018-07-23 15:25:41,468 INFO L226 Difference]: Without dead ends: 63 [2018-07-23 15:25:41,469 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:25:41,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-23 15:25:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-23 15:25:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-23 15:25:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-23 15:25:41,474 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-23 15:25:41,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:41,474 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-23 15:25:41,475 INFO L472 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-23 15:25:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-23 15:25:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-23 15:25:41,476 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:41,477 INFO L353 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-23 15:25:41,477 INFO L414 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:41,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-07-23 15:25:41,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:41,625 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 15:25:41,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:41,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-23 15:25:41,626 INFO L450 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-23 15:25:41,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-23 15:25:41,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:25:41,627 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-07-23 15:25:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:41,655 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-23 15:25:41,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-23 15:25:41,656 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-23 15:25:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:41,656 INFO L225 Difference]: With dead ends: 67 [2018-07-23 15:25:41,656 INFO L226 Difference]: Without dead ends: 65 [2018-07-23 15:25:41,658 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:25:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-23 15:25:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-23 15:25:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-23 15:25:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-23 15:25:41,661 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-23 15:25:41,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:41,662 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-23 15:25:41,662 INFO L472 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-23 15:25:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-23 15:25:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-23 15:25:41,662 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:41,663 INFO L353 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-23 15:25:41,663 INFO L414 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:41,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-07-23 15:25:41,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:41,800 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 15:25:41,800 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:41,800 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-23 15:25:41,801 INFO L450 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-23 15:25:41,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-23 15:25:41,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:25:41,802 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-07-23 15:25:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:41,830 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-23 15:25:41,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:25:41,830 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-23 15:25:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:41,831 INFO L225 Difference]: With dead ends: 69 [2018-07-23 15:25:41,831 INFO L226 Difference]: Without dead ends: 67 [2018-07-23 15:25:41,832 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:25:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-23 15:25:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-23 15:25:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-23 15:25:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-23 15:25:41,835 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-23 15:25:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:41,836 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-23 15:25:41,836 INFO L472 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-23 15:25:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-23 15:25:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-23 15:25:41,836 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:41,836 INFO L353 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-23 15:25:41,837 INFO L414 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:41,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-07-23 15:25:41,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:41,975 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 15:25:41,975 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:41,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-23 15:25:41,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-23 15:25:41,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-23 15:25:41,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:25:41,977 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-07-23 15:25:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:41,997 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-23 15:25:41,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-23 15:25:41,997 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-23 15:25:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:41,998 INFO L225 Difference]: With dead ends: 71 [2018-07-23 15:25:41,998 INFO L226 Difference]: Without dead ends: 69 [2018-07-23 15:25:41,999 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:25:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-23 15:25:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-23 15:25:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-23 15:25:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-23 15:25:42,002 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-23 15:25:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:42,002 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-23 15:25:42,002 INFO L472 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-23 15:25:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-23 15:25:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-23 15:25:42,003 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:42,003 INFO L353 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-23 15:25:42,003 INFO L414 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:42,004 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-07-23 15:25:42,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:42,145 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 15:25:42,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:42,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-23 15:25:42,146 INFO L450 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-23 15:25:42,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-23 15:25:42,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:25:42,148 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-07-23 15:25:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:42,180 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-23 15:25:42,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-23 15:25:42,180 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-23 15:25:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:42,181 INFO L225 Difference]: With dead ends: 73 [2018-07-23 15:25:42,181 INFO L226 Difference]: Without dead ends: 71 [2018-07-23 15:25:42,182 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:25:42,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-23 15:25:42,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-23 15:25:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-23 15:25:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-23 15:25:42,186 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-23 15:25:42,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:42,186 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-23 15:25:42,186 INFO L472 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-23 15:25:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-23 15:25:42,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-23 15:25:42,187 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:42,187 INFO L353 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-23 15:25:42,187 INFO L414 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:42,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-07-23 15:25:42,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:42,343 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 15:25:42,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:42,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-23 15:25:42,344 INFO L450 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-23 15:25:42,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-23 15:25:42,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:25:42,345 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-07-23 15:25:42,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:42,369 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-23 15:25:42,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-23 15:25:42,369 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-23 15:25:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:42,370 INFO L225 Difference]: With dead ends: 75 [2018-07-23 15:25:42,370 INFO L226 Difference]: Without dead ends: 73 [2018-07-23 15:25:42,371 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-23 15:25:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-23 15:25:42,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-23 15:25:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-23 15:25:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-23 15:25:42,374 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-23 15:25:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:42,375 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-23 15:25:42,375 INFO L472 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-23 15:25:42,375 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-23 15:25:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-23 15:25:42,375 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:42,376 INFO L353 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-23 15:25:42,376 INFO L414 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:42,376 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-07-23 15:25:42,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:42,544 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 15:25:42,545 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:42,545 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-23 15:25:42,545 INFO L450 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-23 15:25:42,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-23 15:25:42,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:25:42,547 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-07-23 15:25:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:42,574 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-23 15:25:42,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-23 15:25:42,574 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-23 15:25:42,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:42,575 INFO L225 Difference]: With dead ends: 77 [2018-07-23 15:25:42,575 INFO L226 Difference]: Without dead ends: 75 [2018-07-23 15:25:42,576 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:25:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-23 15:25:42,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-23 15:25:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-23 15:25:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-23 15:25:42,580 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-23 15:25:42,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:42,580 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-23 15:25:42,580 INFO L472 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-23 15:25:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-23 15:25:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-23 15:25:42,581 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:42,581 INFO L353 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-23 15:25:42,582 INFO L414 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:42,582 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-07-23 15:25:42,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:42,764 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 15:25:42,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:42,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-23 15:25:42,765 INFO L450 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-23 15:25:42,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-23 15:25:42,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:25:42,767 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-07-23 15:25:42,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:42,805 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-23 15:25:42,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-23 15:25:42,805 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-23 15:25:42,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:42,806 INFO L225 Difference]: With dead ends: 79 [2018-07-23 15:25:42,806 INFO L226 Difference]: Without dead ends: 77 [2018-07-23 15:25:42,808 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:25:42,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-23 15:25:42,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-23 15:25:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-23 15:25:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-23 15:25:42,811 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-23 15:25:42,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:42,812 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-23 15:25:42,812 INFO L472 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-23 15:25:42,812 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-23 15:25:42,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-23 15:25:42,812 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:42,813 INFO L353 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-23 15:25:42,813 INFO L414 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:42,813 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-07-23 15:25:42,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:42,990 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 15:25:42,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:42,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-23 15:25:42,991 INFO L450 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-23 15:25:42,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-23 15:25:42,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:25:42,992 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-07-23 15:25:43,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:43,017 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-23 15:25:43,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:25:43,017 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-23 15:25:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:43,018 INFO L225 Difference]: With dead ends: 81 [2018-07-23 15:25:43,018 INFO L226 Difference]: Without dead ends: 79 [2018-07-23 15:25:43,019 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:25:43,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-23 15:25:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-23 15:25:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-23 15:25:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-23 15:25:43,023 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-23 15:25:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:43,023 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-23 15:25:43,023 INFO L472 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-23 15:25:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-23 15:25:43,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-23 15:25:43,024 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:43,024 INFO L353 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-23 15:25:43,024 INFO L414 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:43,025 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-07-23 15:25:43,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:43,203 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 15:25:43,203 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:43,203 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-23 15:25:43,204 INFO L450 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-23 15:25:43,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-23 15:25:43,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:25:43,205 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-07-23 15:25:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:43,240 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-23 15:25:43,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-23 15:25:43,240 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-23 15:25:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:43,241 INFO L225 Difference]: With dead ends: 83 [2018-07-23 15:25:43,241 INFO L226 Difference]: Without dead ends: 81 [2018-07-23 15:25:43,242 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-23 15:25:43,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-23 15:25:43,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-23 15:25:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-23 15:25:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-23 15:25:43,246 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-23 15:25:43,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:43,246 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-23 15:25:43,246 INFO L472 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-23 15:25:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-23 15:25:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-23 15:25:43,247 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:43,247 INFO L353 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-23 15:25:43,247 INFO L414 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:43,248 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-07-23 15:25:43,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:43,428 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 15:25:43,429 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:43,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-23 15:25:43,430 INFO L450 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-23 15:25:43,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-23 15:25:43,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:25:43,431 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-07-23 15:25:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:43,464 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-23 15:25:43,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:25:43,464 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-23 15:25:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:43,465 INFO L225 Difference]: With dead ends: 85 [2018-07-23 15:25:43,465 INFO L226 Difference]: Without dead ends: 83 [2018-07-23 15:25:43,466 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-23 15:25:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-23 15:25:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-23 15:25:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-23 15:25:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-23 15:25:43,470 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-23 15:25:43,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:43,470 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-23 15:25:43,471 INFO L472 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-23 15:25:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-23 15:25:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-23 15:25:43,471 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:43,472 INFO L353 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-23 15:25:43,472 INFO L414 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-07-23 15:25:43,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:43,665 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 15:25:43,666 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:43,666 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-23 15:25:43,667 INFO L450 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-23 15:25:43,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-23 15:25:43,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:25:43,668 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-07-23 15:25:43,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:43,699 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-23 15:25:43,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-23 15:25:43,699 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-23 15:25:43,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:43,700 INFO L225 Difference]: With dead ends: 87 [2018-07-23 15:25:43,700 INFO L226 Difference]: Without dead ends: 85 [2018-07-23 15:25:43,701 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-23 15:25:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-23 15:25:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-23 15:25:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-23 15:25:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-23 15:25:43,706 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-23 15:25:43,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:43,706 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-23 15:25:43,706 INFO L472 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-23 15:25:43,706 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-23 15:25:43,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-23 15:25:43,707 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:43,707 INFO L353 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-23 15:25:43,707 INFO L414 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:43,708 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-07-23 15:25:43,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:43,919 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 15:25:43,919 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:43,919 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-23 15:25:43,920 INFO L450 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-23 15:25:43,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-23 15:25:43,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:25:43,921 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-07-23 15:25:43,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:43,953 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-23 15:25:43,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-23 15:25:43,954 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-23 15:25:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:43,955 INFO L225 Difference]: With dead ends: 89 [2018-07-23 15:25:43,955 INFO L226 Difference]: Without dead ends: 87 [2018-07-23 15:25:43,956 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:25:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-23 15:25:43,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-23 15:25:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-23 15:25:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-23 15:25:43,961 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-23 15:25:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:43,961 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-23 15:25:43,961 INFO L472 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-23 15:25:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-23 15:25:43,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-23 15:25:43,962 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:43,963 INFO L353 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-23 15:25:43,963 INFO L414 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:43,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-07-23 15:25:43,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:44,202 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 15:25:44,202 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:44,202 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-23 15:25:44,203 INFO L450 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-23 15:25:44,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-23 15:25:44,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:25:44,204 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-07-23 15:25:44,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:44,263 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-23 15:25:44,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-23 15:25:44,263 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-23 15:25:44,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:44,264 INFO L225 Difference]: With dead ends: 91 [2018-07-23 15:25:44,264 INFO L226 Difference]: Without dead ends: 89 [2018-07-23 15:25:44,265 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:25:44,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-23 15:25:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-23 15:25:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-23 15:25:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-23 15:25:44,270 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-23 15:25:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:44,270 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-23 15:25:44,270 INFO L472 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-23 15:25:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-23 15:25:44,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-23 15:25:44,271 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:44,271 INFO L353 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-23 15:25:44,272 INFO L414 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:44,272 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-07-23 15:25:44,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:44,445 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 15:25:44,446 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:44,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-23 15:25:44,446 INFO L450 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-23 15:25:44,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-23 15:25:44,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:25:44,448 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-07-23 15:25:44,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:44,488 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-23 15:25:44,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-23 15:25:44,488 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-23 15:25:44,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:44,489 INFO L225 Difference]: With dead ends: 93 [2018-07-23 15:25:44,489 INFO L226 Difference]: Without dead ends: 91 [2018-07-23 15:25:44,492 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-23 15:25:44,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-23 15:25:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-23 15:25:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-23 15:25:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-23 15:25:44,497 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-23 15:25:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:44,498 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-23 15:25:44,498 INFO L472 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-23 15:25:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-23 15:25:44,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-23 15:25:44,499 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:44,499 INFO L353 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-23 15:25:44,499 INFO L414 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:44,499 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-07-23 15:25:44,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:44,676 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 15:25:44,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:44,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-23 15:25:44,676 INFO L450 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-23 15:25:44,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-23 15:25:44,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:25:44,680 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-07-23 15:25:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:44,711 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-23 15:25:44,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-23 15:25:44,711 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-23 15:25:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:44,712 INFO L225 Difference]: With dead ends: 95 [2018-07-23 15:25:44,712 INFO L226 Difference]: Without dead ends: 93 [2018-07-23 15:25:44,713 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-23 15:25:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-23 15:25:44,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-23 15:25:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-23 15:25:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-23 15:25:44,717 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-23 15:25:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:44,717 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-23 15:25:44,717 INFO L472 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-23 15:25:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-23 15:25:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 15:25:44,718 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:44,719 INFO L353 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-23 15:25:44,719 INFO L414 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:44,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-07-23 15:25:44,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:44,905 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 15:25:44,905 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:44,905 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-23 15:25:44,905 INFO L450 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-23 15:25:44,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-23 15:25:44,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:25:44,907 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-07-23 15:25:44,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:44,951 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-23 15:25:44,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-23 15:25:44,952 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-23 15:25:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:44,953 INFO L225 Difference]: With dead ends: 97 [2018-07-23 15:25:44,953 INFO L226 Difference]: Without dead ends: 95 [2018-07-23 15:25:44,954 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-23 15:25:44,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-23 15:25:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-23 15:25:44,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-23 15:25:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-23 15:25:44,957 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-23 15:25:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:44,958 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-23 15:25:44,958 INFO L472 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-23 15:25:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-23 15:25:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-23 15:25:44,959 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:44,959 INFO L353 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-23 15:25:44,959 INFO L414 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:44,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-07-23 15:25:44,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:45,146 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 15:25:45,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:45,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-23 15:25:45,147 INFO L450 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-23 15:25:45,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-23 15:25:45,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:25:45,148 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-07-23 15:25:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:45,193 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-23 15:25:45,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-23 15:25:45,194 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-23 15:25:45,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:45,195 INFO L225 Difference]: With dead ends: 99 [2018-07-23 15:25:45,195 INFO L226 Difference]: Without dead ends: 97 [2018-07-23 15:25:45,196 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-23 15:25:45,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-23 15:25:45,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-23 15:25:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-23 15:25:45,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-23 15:25:45,199 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-23 15:25:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:45,200 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-23 15:25:45,200 INFO L472 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-23 15:25:45,200 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-23 15:25:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-23 15:25:45,201 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:45,201 INFO L353 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-23 15:25:45,201 INFO L414 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:45,201 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-07-23 15:25:45,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:45,385 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 15:25:45,385 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:45,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-23 15:25:45,386 INFO L450 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-23 15:25:45,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-23 15:25:45,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:25:45,387 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-07-23 15:25:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:45,430 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-23 15:25:45,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-23 15:25:45,431 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-23 15:25:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:45,432 INFO L225 Difference]: With dead ends: 101 [2018-07-23 15:25:45,432 INFO L226 Difference]: Without dead ends: 99 [2018-07-23 15:25:45,433 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-23 15:25:45,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-23 15:25:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-23 15:25:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-23 15:25:45,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-23 15:25:45,437 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-23 15:25:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:45,437 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-23 15:25:45,437 INFO L472 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-23 15:25:45,438 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-23 15:25:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-23 15:25:45,438 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:45,439 INFO L353 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-23 15:25:45,439 INFO L414 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:45,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-07-23 15:25:45,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:45,630 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 15:25:45,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:45,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-23 15:25:45,631 INFO L450 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-23 15:25:45,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-23 15:25:45,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:25:45,633 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-07-23 15:25:45,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:45,676 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-23 15:25:45,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-23 15:25:45,676 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-23 15:25:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:45,677 INFO L225 Difference]: With dead ends: 103 [2018-07-23 15:25:45,677 INFO L226 Difference]: Without dead ends: 101 [2018-07-23 15:25:45,678 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:25:45,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-23 15:25:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-23 15:25:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-23 15:25:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-23 15:25:45,684 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-23 15:25:45,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:45,685 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-23 15:25:45,685 INFO L472 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-23 15:25:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-23 15:25:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 15:25:45,686 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:45,686 INFO L353 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-23 15:25:45,687 INFO L414 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:45,687 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-07-23 15:25:45,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:45,877 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 15:25:45,877 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:45,877 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-23 15:25:45,878 INFO L450 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-23 15:25:45,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-23 15:25:45,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:25:45,879 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-07-23 15:25:45,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:45,932 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-23 15:25:45,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-23 15:25:45,932 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-23 15:25:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:45,933 INFO L225 Difference]: With dead ends: 105 [2018-07-23 15:25:45,933 INFO L226 Difference]: Without dead ends: 103 [2018-07-23 15:25:45,934 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-23 15:25:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-23 15:25:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-23 15:25:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-23 15:25:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-23 15:25:45,940 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-23 15:25:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:45,940 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-23 15:25:45,940 INFO L472 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-23 15:25:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-23 15:25:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-23 15:25:45,941 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:45,942 INFO L353 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-23 15:25:45,942 INFO L414 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:45,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-07-23 15:25:45,943 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:46,143 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 15:25:46,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:46,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-23 15:25:46,144 INFO L450 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-23 15:25:46,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-23 15:25:46,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:25:46,146 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-07-23 15:25:46,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:46,196 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-23 15:25:46,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-23 15:25:46,197 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-23 15:25:46,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:46,198 INFO L225 Difference]: With dead ends: 107 [2018-07-23 15:25:46,198 INFO L226 Difference]: Without dead ends: 105 [2018-07-23 15:25:46,199 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-23 15:25:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-23 15:25:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-23 15:25:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-23 15:25:46,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-23 15:25:46,204 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-23 15:25:46,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:46,205 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-23 15:25:46,205 INFO L472 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-23 15:25:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-23 15:25:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-23 15:25:46,206 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:46,206 INFO L353 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-23 15:25:46,206 INFO L414 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:46,207 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-07-23 15:25:46,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:46,443 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 15:25:46,444 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:46,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-23 15:25:46,444 INFO L450 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-23 15:25:46,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-23 15:25:46,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:25:46,447 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-07-23 15:25:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:46,496 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-23 15:25:46,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:25:46,497 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-23 15:25:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:46,498 INFO L225 Difference]: With dead ends: 109 [2018-07-23 15:25:46,498 INFO L226 Difference]: Without dead ends: 107 [2018-07-23 15:25:46,499 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-23 15:25:46,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-23 15:25:46,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-23 15:25:46,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-23 15:25:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-23 15:25:46,508 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-23 15:25:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:46,509 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-23 15:25:46,509 INFO L472 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-23 15:25:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-23 15:25:46,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-23 15:25:46,510 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:46,512 INFO L353 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-23 15:25:46,512 INFO L414 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:46,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-07-23 15:25:46,513 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:46,750 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 15:25:46,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:46,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-23 15:25:46,751 INFO L450 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-23 15:25:46,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-23 15:25:46,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:25:46,753 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-07-23 15:25:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:46,789 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-23 15:25:46,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-23 15:25:46,789 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-23 15:25:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:46,790 INFO L225 Difference]: With dead ends: 111 [2018-07-23 15:25:46,790 INFO L226 Difference]: Without dead ends: 109 [2018-07-23 15:25:46,791 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:25:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-23 15:25:46,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-23 15:25:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-23 15:25:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-23 15:25:46,799 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-23 15:25:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:46,800 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-23 15:25:46,800 INFO L472 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-23 15:25:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-23 15:25:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-23 15:25:46,801 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:46,801 INFO L353 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-23 15:25:46,801 INFO L414 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:46,802 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-07-23 15:25:46,802 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:47,009 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 15:25:47,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:47,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-23 15:25:47,010 INFO L450 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-23 15:25:47,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-23 15:25:47,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:25:47,011 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-07-23 15:25:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:47,073 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-23 15:25:47,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-23 15:25:47,073 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-23 15:25:47,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:47,074 INFO L225 Difference]: With dead ends: 113 [2018-07-23 15:25:47,074 INFO L226 Difference]: Without dead ends: 111 [2018-07-23 15:25:47,076 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-23 15:25:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-23 15:25:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-23 15:25:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-23 15:25:47,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-23 15:25:47,080 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-23 15:25:47,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:47,081 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-23 15:25:47,081 INFO L472 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-23 15:25:47,081 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-23 15:25:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-23 15:25:47,082 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:47,082 INFO L353 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-23 15:25:47,082 INFO L414 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:47,083 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-07-23 15:25:47,083 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:47,292 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 15:25:47,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:47,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-23 15:25:47,293 INFO L450 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-23 15:25:47,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-23 15:25:47,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:25:47,294 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-07-23 15:25:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:47,353 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-23 15:25:47,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-23 15:25:47,353 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-23 15:25:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:47,354 INFO L225 Difference]: With dead ends: 115 [2018-07-23 15:25:47,354 INFO L226 Difference]: Without dead ends: 113 [2018-07-23 15:25:47,355 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-23 15:25:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-23 15:25:47,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-23 15:25:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-23 15:25:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-23 15:25:47,360 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-23 15:25:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:47,360 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-23 15:25:47,360 INFO L472 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-23 15:25:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-23 15:25:47,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-23 15:25:47,361 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:47,361 INFO L353 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-23 15:25:47,362 INFO L414 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:47,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-07-23 15:25:47,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:47,579 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 15:25:47,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:47,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-23 15:25:47,580 INFO L450 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-23 15:25:47,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-23 15:25:47,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:25:47,581 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-07-23 15:25:47,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:47,646 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-23 15:25:47,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-23 15:25:47,646 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-23 15:25:47,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:47,647 INFO L225 Difference]: With dead ends: 117 [2018-07-23 15:25:47,647 INFO L226 Difference]: Without dead ends: 115 [2018-07-23 15:25:47,648 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:25:47,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-23 15:25:47,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-23 15:25:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-23 15:25:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-23 15:25:47,653 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-23 15:25:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:47,653 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-23 15:25:47,653 INFO L472 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-23 15:25:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-23 15:25:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-23 15:25:47,655 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:47,655 INFO L353 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-23 15:25:47,655 INFO L414 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:47,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-07-23 15:25:47,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:47,870 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 15:25:47,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:47,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-23 15:25:47,871 INFO L450 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-23 15:25:47,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-23 15:25:47,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:25:47,873 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-07-23 15:25:47,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:47,942 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-23 15:25:47,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-23 15:25:47,943 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-23 15:25:47,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:47,944 INFO L225 Difference]: With dead ends: 119 [2018-07-23 15:25:47,944 INFO L226 Difference]: Without dead ends: 117 [2018-07-23 15:25:47,945 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-23 15:25:47,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-23 15:25:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-23 15:25:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-23 15:25:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-23 15:25:47,949 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-23 15:25:47,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:47,949 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-23 15:25:47,949 INFO L472 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-23 15:25:47,950 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-23 15:25:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-23 15:25:47,951 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:47,951 INFO L353 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-23 15:25:47,951 INFO L414 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:47,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-07-23 15:25:47,951 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:48,170 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 15:25:48,170 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:48,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-23 15:25:48,174 INFO L450 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-23 15:25:48,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-23 15:25:48,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:25:48,175 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-07-23 15:25:48,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:48,221 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-23 15:25:48,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-23 15:25:48,221 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-23 15:25:48,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:48,222 INFO L225 Difference]: With dead ends: 121 [2018-07-23 15:25:48,223 INFO L226 Difference]: Without dead ends: 119 [2018-07-23 15:25:48,224 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-23 15:25:48,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-23 15:25:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-23 15:25:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-23 15:25:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-23 15:25:48,228 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-23 15:25:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:48,228 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-23 15:25:48,229 INFO L472 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-23 15:25:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-23 15:25:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-23 15:25:48,230 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:48,230 INFO L353 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-23 15:25:48,230 INFO L414 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:48,230 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-07-23 15:25:48,231 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:48,455 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 15:25:48,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:48,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-23 15:25:48,456 INFO L450 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-23 15:25:48,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-23 15:25:48,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:25:48,458 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-07-23 15:25:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:48,521 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-23 15:25:48,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-23 15:25:48,521 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-23 15:25:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:48,522 INFO L225 Difference]: With dead ends: 123 [2018-07-23 15:25:48,522 INFO L226 Difference]: Without dead ends: 121 [2018-07-23 15:25:48,523 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-23 15:25:48,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-23 15:25:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-23 15:25:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-23 15:25:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-23 15:25:48,528 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-23 15:25:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:48,528 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-23 15:25:48,529 INFO L472 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-23 15:25:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-23 15:25:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 15:25:48,530 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:48,530 INFO L353 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-23 15:25:48,530 INFO L414 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:48,530 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-07-23 15:25:48,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:48,784 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 15:25:48,784 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:48,785 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-23 15:25:48,785 INFO L450 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-23 15:25:48,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-23 15:25:48,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:25:48,787 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-07-23 15:25:48,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:48,864 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-23 15:25:48,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-23 15:25:48,864 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-23 15:25:48,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:48,865 INFO L225 Difference]: With dead ends: 125 [2018-07-23 15:25:48,866 INFO L226 Difference]: Without dead ends: 123 [2018-07-23 15:25:48,867 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-23 15:25:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-23 15:25:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-23 15:25:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-23 15:25:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-23 15:25:48,872 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-23 15:25:48,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:48,873 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-23 15:25:48,873 INFO L472 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-23 15:25:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-23 15:25:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-23 15:25:48,874 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:48,875 INFO L353 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-23 15:25:48,875 INFO L414 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:48,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-07-23 15:25:48,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:49,180 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 15:25:49,181 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:49,181 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-23 15:25:49,182 INFO L450 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-23 15:25:49,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-23 15:25:49,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:25:49,184 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-07-23 15:25:49,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:49,242 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-23 15:25:49,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-23 15:25:49,242 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-23 15:25:49,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:49,243 INFO L225 Difference]: With dead ends: 127 [2018-07-23 15:25:49,243 INFO L226 Difference]: Without dead ends: 125 [2018-07-23 15:25:49,244 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-23 15:25:49,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-23 15:25:49,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-23 15:25:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-23 15:25:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-23 15:25:49,250 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-23 15:25:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:49,251 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-23 15:25:49,251 INFO L472 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-23 15:25:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-23 15:25:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-23 15:25:49,252 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:49,252 INFO L353 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-23 15:25:49,252 INFO L414 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:49,253 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-07-23 15:25:49,253 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:49,509 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 15:25:49,509 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:49,509 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-23 15:25:49,510 INFO L450 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-23 15:25:49,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-23 15:25:49,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:25:49,511 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-07-23 15:25:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:49,576 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-23 15:25:49,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-23 15:25:49,576 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-23 15:25:49,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:49,578 INFO L225 Difference]: With dead ends: 129 [2018-07-23 15:25:49,578 INFO L226 Difference]: Without dead ends: 127 [2018-07-23 15:25:49,578 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-23 15:25:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-23 15:25:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-23 15:25:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-23 15:25:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-23 15:25:49,583 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-23 15:25:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:49,583 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-23 15:25:49,583 INFO L472 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-23 15:25:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-23 15:25:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-23 15:25:49,585 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:49,585 INFO L353 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-23 15:25:49,585 INFO L414 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:49,585 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-07-23 15:25:49,585 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:49,803 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 15:25:49,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:49,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-23 15:25:49,804 INFO L450 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-23 15:25:49,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-23 15:25:49,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:25:49,805 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-07-23 15:25:49,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:49,875 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-23 15:25:49,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-23 15:25:49,876 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-23 15:25:49,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:49,877 INFO L225 Difference]: With dead ends: 131 [2018-07-23 15:25:49,877 INFO L226 Difference]: Without dead ends: 129 [2018-07-23 15:25:49,877 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-23 15:25:49,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-23 15:25:49,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-23 15:25:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-23 15:25:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-23 15:25:49,882 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-23 15:25:49,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:49,882 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-23 15:25:49,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-23 15:25:49,882 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-23 15:25:49,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-23 15:25:49,884 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:49,884 INFO L353 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-23 15:25:49,884 INFO L414 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:49,884 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-07-23 15:25:49,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:50,111 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 15:25:50,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:50,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-23 15:25:50,112 INFO L450 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-23 15:25:50,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-23 15:25:50,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:25:50,114 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-07-23 15:25:50,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:50,203 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-23 15:25:50,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-23 15:25:50,203 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-23 15:25:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:50,204 INFO L225 Difference]: With dead ends: 133 [2018-07-23 15:25:50,205 INFO L226 Difference]: Without dead ends: 131 [2018-07-23 15:25:50,205 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-23 15:25:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-23 15:25:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-23 15:25:50,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-23 15:25:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-23 15:25:50,210 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-23 15:25:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:50,211 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-23 15:25:50,211 INFO L472 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-23 15:25:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-23 15:25:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 15:25:50,212 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:50,212 INFO L353 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-23 15:25:50,212 INFO L414 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:50,213 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-07-23 15:25:50,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:50,455 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 15:25:50,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:50,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-23 15:25:50,456 INFO L450 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-23 15:25:50,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-23 15:25:50,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:25:50,458 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-07-23 15:25:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:50,512 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-23 15:25:50,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-23 15:25:50,512 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-23 15:25:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:50,513 INFO L225 Difference]: With dead ends: 135 [2018-07-23 15:25:50,514 INFO L226 Difference]: Without dead ends: 133 [2018-07-23 15:25:50,515 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-23 15:25:50,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-23 15:25:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-23 15:25:50,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-23 15:25:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-23 15:25:50,522 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-23 15:25:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:50,523 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-23 15:25:50,523 INFO L472 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-23 15:25:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-23 15:25:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-23 15:25:50,525 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:50,525 INFO L353 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-23 15:25:50,525 INFO L414 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:50,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-07-23 15:25:50,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:50,783 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 15:25:50,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:50,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-23 15:25:50,784 INFO L450 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-23 15:25:50,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-23 15:25:50,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:25:50,786 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-07-23 15:25:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:50,868 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-23 15:25:50,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-23 15:25:50,868 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-23 15:25:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:50,870 INFO L225 Difference]: With dead ends: 137 [2018-07-23 15:25:50,870 INFO L226 Difference]: Without dead ends: 135 [2018-07-23 15:25:50,871 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-23 15:25:50,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-23 15:25:50,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-23 15:25:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-23 15:25:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-23 15:25:50,875 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-23 15:25:50,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:50,876 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-23 15:25:50,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-23 15:25:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-23 15:25:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-23 15:25:50,878 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:50,878 INFO L353 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-23 15:25:50,878 INFO L414 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-07-23 15:25:50,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:51,135 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 15:25:51,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:51,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-23 15:25:51,136 INFO L450 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-23 15:25:51,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-23 15:25:51,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:25:51,138 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-07-23 15:25:51,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:51,229 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-23 15:25:51,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-23 15:25:51,230 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-23 15:25:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:51,231 INFO L225 Difference]: With dead ends: 139 [2018-07-23 15:25:51,231 INFO L226 Difference]: Without dead ends: 137 [2018-07-23 15:25:51,232 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-23 15:25:51,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-23 15:25:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-23 15:25:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-23 15:25:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-23 15:25:51,239 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-23 15:25:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:51,239 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-23 15:25:51,239 INFO L472 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-23 15:25:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-23 15:25:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 15:25:51,241 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:51,241 INFO L353 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-23 15:25:51,241 INFO L414 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:51,241 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-07-23 15:25:51,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:51,502 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 15:25:51,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:51,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-23 15:25:51,503 INFO L450 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-23 15:25:51,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-23 15:25:51,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:25:51,504 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-07-23 15:25:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:51,595 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-23 15:25:51,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-23 15:25:51,595 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-23 15:25:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:51,597 INFO L225 Difference]: With dead ends: 141 [2018-07-23 15:25:51,597 INFO L226 Difference]: Without dead ends: 139 [2018-07-23 15:25:51,598 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-23 15:25:51,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-23 15:25:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-23 15:25:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-23 15:25:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-23 15:25:51,602 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-23 15:25:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:51,602 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-23 15:25:51,603 INFO L472 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-23 15:25:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-23 15:25:51,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-23 15:25:51,604 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:51,604 INFO L353 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-23 15:25:51,604 INFO L414 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:51,604 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-07-23 15:25:51,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:51,991 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 15:25:51,991 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:51,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-23 15:25:51,992 INFO L450 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-23 15:25:51,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-23 15:25:51,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:25:51,993 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-07-23 15:25:52,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:52,084 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-23 15:25:52,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-23 15:25:52,085 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-23 15:25:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:52,086 INFO L225 Difference]: With dead ends: 143 [2018-07-23 15:25:52,086 INFO L226 Difference]: Without dead ends: 141 [2018-07-23 15:25:52,087 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-23 15:25:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-23 15:25:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-23 15:25:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-23 15:25:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-23 15:25:52,092 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-23 15:25:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:52,093 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-23 15:25:52,093 INFO L472 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-23 15:25:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-23 15:25:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-23 15:25:52,094 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:52,094 INFO L353 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-23 15:25:52,095 INFO L414 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:52,095 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-07-23 15:25:52,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:52,470 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 15:25:52,470 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:52,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-23 15:25:52,471 INFO L450 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-23 15:25:52,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-23 15:25:52,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:25:52,472 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-07-23 15:25:52,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:52,548 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-23 15:25:52,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-23 15:25:52,548 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-23 15:25:52,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:52,549 INFO L225 Difference]: With dead ends: 145 [2018-07-23 15:25:52,550 INFO L226 Difference]: Without dead ends: 143 [2018-07-23 15:25:52,551 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-23 15:25:52,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-23 15:25:52,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-23 15:25:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-23 15:25:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-23 15:25:52,556 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-23 15:25:52,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:52,556 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-23 15:25:52,556 INFO L472 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-23 15:25:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-23 15:25:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-23 15:25:52,558 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:52,558 INFO L353 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-23 15:25:52,558 INFO L414 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:52,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-07-23 15:25:52,559 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:52,819 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 15:25:52,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:52,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-23 15:25:52,820 INFO L450 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-23 15:25:52,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-23 15:25:52,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:25:52,821 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-07-23 15:25:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:52,935 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-23 15:25:52,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-23 15:25:52,936 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-23 15:25:52,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:52,937 INFO L225 Difference]: With dead ends: 147 [2018-07-23 15:25:52,937 INFO L226 Difference]: Without dead ends: 145 [2018-07-23 15:25:52,938 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-23 15:25:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-23 15:25:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-23 15:25:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-23 15:25:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-23 15:25:52,943 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-23 15:25:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:52,943 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-23 15:25:52,943 INFO L472 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-23 15:25:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-23 15:25:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 15:25:52,945 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:52,945 INFO L353 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-23 15:25:52,945 INFO L414 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:52,945 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-07-23 15:25:52,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:53,229 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 15:25:53,229 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:53,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-23 15:25:53,230 INFO L450 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-23 15:25:53,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-23 15:25:53,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:25:53,232 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-07-23 15:25:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:53,351 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-23 15:25:53,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-23 15:25:53,352 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-23 15:25:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:53,353 INFO L225 Difference]: With dead ends: 149 [2018-07-23 15:25:53,353 INFO L226 Difference]: Without dead ends: 147 [2018-07-23 15:25:53,354 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-23 15:25:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-23 15:25:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-23 15:25:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-23 15:25:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-23 15:25:53,359 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-23 15:25:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:53,359 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-23 15:25:53,359 INFO L472 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-23 15:25:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-23 15:25:53,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-23 15:25:53,361 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:53,361 INFO L353 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-23 15:25:53,361 INFO L414 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:53,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-07-23 15:25:53,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:53,635 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 15:25:53,636 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:53,636 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-23 15:25:53,636 INFO L450 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-23 15:25:53,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-23 15:25:53,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:25:53,638 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-07-23 15:25:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:53,743 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-23 15:25:53,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-23 15:25:53,743 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-23 15:25:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:53,744 INFO L225 Difference]: With dead ends: 151 [2018-07-23 15:25:53,744 INFO L226 Difference]: Without dead ends: 149 [2018-07-23 15:25:53,745 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-23 15:25:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-23 15:25:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-23 15:25:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-23 15:25:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-23 15:25:53,750 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-23 15:25:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:53,751 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-23 15:25:53,751 INFO L472 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-23 15:25:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-23 15:25:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-23 15:25:53,752 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:53,752 INFO L353 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-23 15:25:53,752 INFO L414 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:53,753 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-07-23 15:25:53,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:54,021 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 15:25:54,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:54,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-23 15:25:54,022 INFO L450 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-23 15:25:54,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-23 15:25:54,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:25:54,024 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-07-23 15:25:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:54,108 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-23 15:25:54,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-23 15:25:54,108 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-23 15:25:54,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:54,110 INFO L225 Difference]: With dead ends: 153 [2018-07-23 15:25:54,110 INFO L226 Difference]: Without dead ends: 151 [2018-07-23 15:25:54,111 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-23 15:25:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-23 15:25:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-23 15:25:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-23 15:25:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-23 15:25:54,116 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-23 15:25:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:54,117 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-23 15:25:54,117 INFO L472 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-23 15:25:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-23 15:25:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-23 15:25:54,118 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:54,118 INFO L353 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-23 15:25:54,119 INFO L414 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:54,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-07-23 15:25:54,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:54,507 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 15:25:54,508 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:54,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-23 15:25:54,509 INFO L450 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-23 15:25:54,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-23 15:25:54,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:25:54,511 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-07-23 15:25:54,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:54,617 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-23 15:25:54,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-23 15:25:54,618 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-23 15:25:54,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:54,619 INFO L225 Difference]: With dead ends: 155 [2018-07-23 15:25:54,619 INFO L226 Difference]: Without dead ends: 153 [2018-07-23 15:25:54,620 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-23 15:25:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-23 15:25:54,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-23 15:25:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-23 15:25:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-23 15:25:54,628 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-23 15:25:54,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:54,628 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-23 15:25:54,628 INFO L472 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-23 15:25:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-23 15:25:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-23 15:25:54,630 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:54,630 INFO L353 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-23 15:25:54,631 INFO L414 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:54,631 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-07-23 15:25:54,631 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:55,007 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 15:25:55,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:55,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-23 15:25:55,009 INFO L450 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-23 15:25:55,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-23 15:25:55,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:25:55,011 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-07-23 15:25:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:55,146 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-23 15:25:55,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-23 15:25:55,147 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-23 15:25:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:55,148 INFO L225 Difference]: With dead ends: 157 [2018-07-23 15:25:55,148 INFO L226 Difference]: Without dead ends: 155 [2018-07-23 15:25:55,149 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-23 15:25:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-23 15:25:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-23 15:25:55,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-23 15:25:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-23 15:25:55,154 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-23 15:25:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:55,155 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-23 15:25:55,155 INFO L472 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-23 15:25:55,155 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-23 15:25:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-23 15:25:55,156 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:55,156 INFO L353 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-23 15:25:55,156 INFO L414 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:55,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-07-23 15:25:55,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:55,468 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 15:25:55,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:55,469 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-23 15:25:55,469 INFO L450 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-23 15:25:55,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-23 15:25:55,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:25:55,472 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-07-23 15:25:55,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:55,549 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-23 15:25:55,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-23 15:25:55,549 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-23 15:25:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:55,551 INFO L225 Difference]: With dead ends: 159 [2018-07-23 15:25:55,551 INFO L226 Difference]: Without dead ends: 157 [2018-07-23 15:25:55,552 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-23 15:25:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-23 15:25:55,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-23 15:25:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-23 15:25:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-23 15:25:55,558 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-23 15:25:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:55,558 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-23 15:25:55,558 INFO L472 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-23 15:25:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-23 15:25:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-23 15:25:55,560 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:55,560 INFO L353 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-23 15:25:55,560 INFO L414 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:55,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-07-23 15:25:55,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:55,875 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 15:25:55,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:55,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-23 15:25:55,876 INFO L450 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-23 15:25:55,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-23 15:25:55,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:25:55,878 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-07-23 15:25:56,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:56,024 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-23 15:25:56,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-23 15:25:56,025 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-23 15:25:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:56,026 INFO L225 Difference]: With dead ends: 161 [2018-07-23 15:25:56,026 INFO L226 Difference]: Without dead ends: 159 [2018-07-23 15:25:56,027 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-23 15:25:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-23 15:25:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-23 15:25:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-23 15:25:56,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-23 15:25:56,034 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-23 15:25:56,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:56,035 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-23 15:25:56,035 INFO L472 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-23 15:25:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-23 15:25:56,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-23 15:25:56,036 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:56,036 INFO L353 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-23 15:25:56,036 INFO L414 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:56,036 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-07-23 15:25:56,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:56,382 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 15:25:56,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:56,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-23 15:25:56,383 INFO L450 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-23 15:25:56,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-23 15:25:56,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:25:56,386 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-07-23 15:25:56,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:56,519 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-23 15:25:56,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-23 15:25:56,519 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-23 15:25:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:56,521 INFO L225 Difference]: With dead ends: 163 [2018-07-23 15:25:56,521 INFO L226 Difference]: Without dead ends: 161 [2018-07-23 15:25:56,522 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-23 15:25:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-23 15:25:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-23 15:25:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-23 15:25:56,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-23 15:25:56,530 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-23 15:25:56,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:56,530 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-23 15:25:56,530 INFO L472 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-23 15:25:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-23 15:25:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-23 15:25:56,531 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:56,531 INFO L353 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-23 15:25:56,532 INFO L414 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:56,532 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-07-23 15:25:56,532 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:56,871 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 15:25:56,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:56,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-23 15:25:56,872 INFO L450 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-23 15:25:56,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-23 15:25:56,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:25:56,874 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-07-23 15:25:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:56,948 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-23 15:25:56,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-23 15:25:56,949 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-23 15:25:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:56,950 INFO L225 Difference]: With dead ends: 165 [2018-07-23 15:25:56,950 INFO L226 Difference]: Without dead ends: 163 [2018-07-23 15:25:56,952 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-23 15:25:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-23 15:25:56,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-23 15:25:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-23 15:25:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-23 15:25:56,957 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-23 15:25:56,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:56,958 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-23 15:25:56,958 INFO L472 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-23 15:25:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-23 15:25:56,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 15:25:56,959 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:56,959 INFO L353 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-23 15:25:56,959 INFO L414 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:56,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-07-23 15:25:56,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:57,286 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 15:25:57,287 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:57,287 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-23 15:25:57,287 INFO L450 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-23 15:25:57,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-23 15:25:57,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:25:57,289 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-07-23 15:25:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:57,426 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-23 15:25:57,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-23 15:25:57,426 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-23 15:25:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:57,427 INFO L225 Difference]: With dead ends: 167 [2018-07-23 15:25:57,427 INFO L226 Difference]: Without dead ends: 165 [2018-07-23 15:25:57,428 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-23 15:25:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-23 15:25:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-23 15:25:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-23 15:25:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-23 15:25:57,434 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-23 15:25:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:57,434 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-23 15:25:57,434 INFO L472 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-23 15:25:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-23 15:25:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-23 15:25:57,435 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:57,435 INFO L353 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-23 15:25:57,435 INFO L414 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:57,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-07-23 15:25:57,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:57,810 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 15:25:57,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:57,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-23 15:25:57,811 INFO L450 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-23 15:25:57,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-23 15:25:57,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:25:57,814 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-07-23 15:25:57,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:57,974 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-23 15:25:57,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-23 15:25:57,975 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-23 15:25:57,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:57,976 INFO L225 Difference]: With dead ends: 169 [2018-07-23 15:25:57,976 INFO L226 Difference]: Without dead ends: 167 [2018-07-23 15:25:57,977 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-23 15:25:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-23 15:25:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-23 15:25:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-23 15:25:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-23 15:25:57,983 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-23 15:25:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:57,983 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-23 15:25:57,983 INFO L472 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-23 15:25:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-23 15:25:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-23 15:25:57,984 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:57,985 INFO L353 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-23 15:25:57,985 INFO L414 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:57,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-07-23 15:25:57,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:58,303 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 15:25:58,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:58,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-23 15:25:58,304 INFO L450 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-23 15:25:58,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-23 15:25:58,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:25:58,306 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-07-23 15:25:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:58,467 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-23 15:25:58,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-23 15:25:58,467 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-23 15:25:58,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:58,469 INFO L225 Difference]: With dead ends: 171 [2018-07-23 15:25:58,469 INFO L226 Difference]: Without dead ends: 169 [2018-07-23 15:25:58,469 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-23 15:25:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-23 15:25:58,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-23 15:25:58,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-23 15:25:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-23 15:25:58,474 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-23 15:25:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:58,475 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-23 15:25:58,475 INFO L472 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-23 15:25:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-23 15:25:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-23 15:25:58,476 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:58,476 INFO L353 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-23 15:25:58,476 INFO L414 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:58,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-07-23 15:25:58,477 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:58,813 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 15:25:58,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:58,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-23 15:25:58,814 INFO L450 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-23 15:25:58,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-23 15:25:58,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:25:58,817 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-07-23 15:25:58,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:58,991 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-23 15:25:58,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-23 15:25:58,991 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-23 15:25:58,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:58,993 INFO L225 Difference]: With dead ends: 173 [2018-07-23 15:25:58,993 INFO L226 Difference]: Without dead ends: 171 [2018-07-23 15:25:58,993 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-23 15:25:58,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-23 15:25:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-23 15:25:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-23 15:25:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-23 15:25:58,998 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-23 15:25:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:58,999 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-23 15:25:58,999 INFO L472 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-23 15:25:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-23 15:25:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-23 15:25:59,000 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:59,000 INFO L353 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-23 15:25:59,000 INFO L414 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:59,000 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-07-23 15:25:59,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:59,343 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 15:25:59,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:59,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-23 15:25:59,344 INFO L450 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-23 15:25:59,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-23 15:25:59,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:25:59,347 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-07-23 15:25:59,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:25:59,538 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-23 15:25:59,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-23 15:25:59,539 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-23 15:25:59,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:25:59,540 INFO L225 Difference]: With dead ends: 175 [2018-07-23 15:25:59,540 INFO L226 Difference]: Without dead ends: 173 [2018-07-23 15:25:59,541 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-23 15:25:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-23 15:25:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-23 15:25:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-23 15:25:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-23 15:25:59,546 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-23 15:25:59,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:25:59,546 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-23 15:25:59,546 INFO L472 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-23 15:25:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-23 15:25:59,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-23 15:25:59,547 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:25:59,548 INFO L353 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-23 15:25:59,548 INFO L414 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:25:59,548 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-07-23 15:25:59,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:25:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:25:59,909 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 15:25:59,910 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:25:59,910 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-23 15:25:59,910 INFO L450 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-23 15:25:59,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-23 15:25:59,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:25:59,912 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-07-23 15:26:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:00,111 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-23 15:26:00,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-23 15:26:00,112 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-23 15:26:00,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:00,113 INFO L225 Difference]: With dead ends: 177 [2018-07-23 15:26:00,113 INFO L226 Difference]: Without dead ends: 175 [2018-07-23 15:26:00,114 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-23 15:26:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-23 15:26:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-23 15:26:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-23 15:26:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-23 15:26:00,120 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-23 15:26:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:00,121 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-23 15:26:00,121 INFO L472 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-23 15:26:00,121 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-23 15:26:00,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-23 15:26:00,123 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:00,123 INFO L353 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-23 15:26:00,123 INFO L414 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:00,123 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-07-23 15:26:00,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:00,598 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 15:26:00,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:00,599 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-23 15:26:00,599 INFO L450 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-23 15:26:00,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-23 15:26:00,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:26:00,601 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-07-23 15:26:00,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:00,747 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-23 15:26:00,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-23 15:26:00,748 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-23 15:26:00,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:00,749 INFO L225 Difference]: With dead ends: 179 [2018-07-23 15:26:00,749 INFO L226 Difference]: Without dead ends: 177 [2018-07-23 15:26:00,750 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-23 15:26:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-23 15:26:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-23 15:26:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-23 15:26:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-23 15:26:00,756 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-23 15:26:00,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:00,756 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-23 15:26:00,757 INFO L472 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-23 15:26:00,757 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-23 15:26:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-23 15:26:00,758 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:00,758 INFO L353 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-23 15:26:00,758 INFO L414 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:00,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-07-23 15:26:00,759 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:01,287 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 15:26:01,288 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:01,288 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-23 15:26:01,289 INFO L450 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-23 15:26:01,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-23 15:26:01,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:26:01,291 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-07-23 15:26:01,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:01,379 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-23 15:26:01,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-23 15:26:01,379 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-23 15:26:01,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:01,381 INFO L225 Difference]: With dead ends: 181 [2018-07-23 15:26:01,381 INFO L226 Difference]: Without dead ends: 179 [2018-07-23 15:26:01,381 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-23 15:26:01,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-23 15:26:01,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-23 15:26:01,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-23 15:26:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-23 15:26:01,386 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-23 15:26:01,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:01,391 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-23 15:26:01,391 INFO L472 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-23 15:26:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-23 15:26:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-23 15:26:01,393 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:01,393 INFO L353 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-23 15:26:01,393 INFO L414 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-07-23 15:26:01,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:01,765 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 15:26:01,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:01,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-23 15:26:01,766 INFO L450 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-23 15:26:01,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-23 15:26:01,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:26:01,768 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-07-23 15:26:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:01,965 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-23 15:26:01,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-23 15:26:01,966 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-23 15:26:01,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:01,968 INFO L225 Difference]: With dead ends: 183 [2018-07-23 15:26:01,968 INFO L226 Difference]: Without dead ends: 181 [2018-07-23 15:26:01,969 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-23 15:26:01,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-23 15:26:01,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-23 15:26:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-23 15:26:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-23 15:26:01,975 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-23 15:26:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:01,976 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-23 15:26:01,976 INFO L472 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-23 15:26:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-23 15:26:01,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-23 15:26:01,977 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:01,977 INFO L353 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-23 15:26:01,977 INFO L414 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:01,978 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-07-23 15:26:01,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:02,376 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 15:26:02,377 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:02,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-23 15:26:02,377 INFO L450 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-23 15:26:02,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-23 15:26:02,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:26:02,379 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-07-23 15:26:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:02,546 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-23 15:26:02,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-23 15:26:02,547 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-23 15:26:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:02,548 INFO L225 Difference]: With dead ends: 185 [2018-07-23 15:26:02,548 INFO L226 Difference]: Without dead ends: 183 [2018-07-23 15:26:02,549 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-23 15:26:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-23 15:26:02,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-23 15:26:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-23 15:26:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-23 15:26:02,555 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-23 15:26:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:02,556 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-23 15:26:02,556 INFO L472 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-23 15:26:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-23 15:26:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-23 15:26:02,557 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:02,557 INFO L353 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-23 15:26:02,557 INFO L414 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:02,560 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-07-23 15:26:02,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:02,888 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 15:26:02,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:02,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-23 15:26:02,889 INFO L450 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-23 15:26:02,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-23 15:26:02,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:26:02,891 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-07-23 15:26:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:03,012 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-23 15:26:03,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-23 15:26:03,012 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-23 15:26:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:03,014 INFO L225 Difference]: With dead ends: 187 [2018-07-23 15:26:03,014 INFO L226 Difference]: Without dead ends: 185 [2018-07-23 15:26:03,015 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-23 15:26:03,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-23 15:26:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-23 15:26:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-23 15:26:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-23 15:26:03,019 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-23 15:26:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:03,020 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-23 15:26:03,020 INFO L472 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-23 15:26:03,020 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-23 15:26:03,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-23 15:26:03,021 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:03,021 INFO L353 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-23 15:26:03,021 INFO L414 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:03,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-07-23 15:26:03,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:03,370 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 15:26:03,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:03,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-23 15:26:03,371 INFO L450 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-23 15:26:03,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-23 15:26:03,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:26:03,373 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-07-23 15:26:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:03,514 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-23 15:26:03,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-23 15:26:03,514 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-23 15:26:03,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:03,516 INFO L225 Difference]: With dead ends: 189 [2018-07-23 15:26:03,516 INFO L226 Difference]: Without dead ends: 187 [2018-07-23 15:26:03,517 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-23 15:26:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-23 15:26:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-23 15:26:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-23 15:26:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-23 15:26:03,522 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-23 15:26:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:03,522 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-23 15:26:03,522 INFO L472 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-23 15:26:03,522 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-23 15:26:03,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-23 15:26:03,523 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:03,523 INFO L353 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-23 15:26:03,524 INFO L414 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:03,524 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-07-23 15:26:03,524 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:03,901 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 15:26:03,901 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:03,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-23 15:26:03,902 INFO L450 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-23 15:26:03,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-23 15:26:03,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:26:03,903 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-07-23 15:26:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:04,115 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-23 15:26:04,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-23 15:26:04,115 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-23 15:26:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:04,116 INFO L225 Difference]: With dead ends: 191 [2018-07-23 15:26:04,116 INFO L226 Difference]: Without dead ends: 189 [2018-07-23 15:26:04,117 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-23 15:26:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-23 15:26:04,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-23 15:26:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-23 15:26:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-23 15:26:04,124 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-23 15:26:04,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:04,124 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-23 15:26:04,124 INFO L472 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-23 15:26:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-23 15:26:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-23 15:26:04,125 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:04,126 INFO L353 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-23 15:26:04,126 INFO L414 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:04,126 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-07-23 15:26:04,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:04,469 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 15:26:04,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:04,469 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-23 15:26:04,469 INFO L450 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-23 15:26:04,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-23 15:26:04,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:26:04,471 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-07-23 15:26:04,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:04,549 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-23 15:26:04,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-23 15:26:04,549 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-23 15:26:04,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:04,551 INFO L225 Difference]: With dead ends: 193 [2018-07-23 15:26:04,551 INFO L226 Difference]: Without dead ends: 191 [2018-07-23 15:26:04,551 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-23 15:26:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-23 15:26:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-23 15:26:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-23 15:26:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-23 15:26:04,556 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-23 15:26:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:04,557 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-23 15:26:04,557 INFO L472 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-23 15:26:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-23 15:26:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-23 15:26:04,558 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:04,558 INFO L353 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-23 15:26:04,558 INFO L414 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:04,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-07-23 15:26:04,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:04,895 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 15:26:04,895 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:04,895 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-23 15:26:04,896 INFO L450 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-23 15:26:04,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-23 15:26:04,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:26:04,897 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-07-23 15:26:04,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:04,991 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-23 15:26:04,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-23 15:26:04,991 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-23 15:26:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:04,992 INFO L225 Difference]: With dead ends: 195 [2018-07-23 15:26:04,993 INFO L226 Difference]: Without dead ends: 193 [2018-07-23 15:26:04,993 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-23 15:26:04,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-23 15:26:04,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-23 15:26:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-23 15:26:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-23 15:26:04,998 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-23 15:26:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:05,002 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-23 15:26:05,002 INFO L472 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-23 15:26:05,002 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-23 15:26:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-23 15:26:05,003 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:05,003 INFO L353 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-23 15:26:05,003 INFO L414 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:05,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-07-23 15:26:05,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:05,320 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 15:26:05,320 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:05,320 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-23 15:26:05,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-23 15:26:05,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-23 15:26:05,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:26:05,322 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-07-23 15:26:05,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:05,508 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-23 15:26:05,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-23 15:26:05,508 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-23 15:26:05,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:05,509 INFO L225 Difference]: With dead ends: 197 [2018-07-23 15:26:05,510 INFO L226 Difference]: Without dead ends: 195 [2018-07-23 15:26:05,510 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-23 15:26:05,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-23 15:26:05,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-23 15:26:05,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-23 15:26:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-23 15:26:05,518 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-23 15:26:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:05,518 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-23 15:26:05,518 INFO L472 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-23 15:26:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-23 15:26:05,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-23 15:26:05,519 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:05,519 INFO L353 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-23 15:26:05,519 INFO L414 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:05,520 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-07-23 15:26:05,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:05,852 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 15:26:05,852 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:05,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-23 15:26:05,853 INFO L450 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-23 15:26:05,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-23 15:26:05,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:26:05,855 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-07-23 15:26:06,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:06,006 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-23 15:26:06,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-23 15:26:06,006 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-23 15:26:06,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:06,008 INFO L225 Difference]: With dead ends: 199 [2018-07-23 15:26:06,008 INFO L226 Difference]: Without dead ends: 197 [2018-07-23 15:26:06,009 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-23 15:26:06,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-23 15:26:06,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-23 15:26:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-23 15:26:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-23 15:26:06,014 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-23 15:26:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:06,014 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-23 15:26:06,014 INFO L472 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-23 15:26:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-23 15:26:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-23 15:26:06,015 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:06,015 INFO L353 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-23 15:26:06,015 INFO L414 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:06,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-07-23 15:26:06,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:06,342 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 15:26:06,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:06,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-23 15:26:06,343 INFO L450 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-23 15:26:06,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-23 15:26:06,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:26:06,344 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-07-23 15:26:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:06,496 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-23 15:26:06,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-23 15:26:06,496 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-23 15:26:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:06,497 INFO L225 Difference]: With dead ends: 201 [2018-07-23 15:26:06,497 INFO L226 Difference]: Without dead ends: 199 [2018-07-23 15:26:06,498 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-23 15:26:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-23 15:26:06,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-23 15:26:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-23 15:26:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-23 15:26:06,504 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-23 15:26:06,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:06,504 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-23 15:26:06,504 INFO L472 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-23 15:26:06,504 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-23 15:26:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-23 15:26:06,505 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:06,506 INFO L353 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-23 15:26:06,506 INFO L414 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:06,506 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-07-23 15:26:06,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:06,907 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 15:26:06,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:06,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-23 15:26:06,908 INFO L450 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-23 15:26:06,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-23 15:26:06,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:26:06,910 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-07-23 15:26:07,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:07,111 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-23 15:26:07,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-23 15:26:07,112 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-23 15:26:07,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:07,113 INFO L225 Difference]: With dead ends: 203 [2018-07-23 15:26:07,113 INFO L226 Difference]: Without dead ends: 201 [2018-07-23 15:26:07,114 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-23 15:26:07,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-23 15:26:07,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-23 15:26:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-23 15:26:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-23 15:26:07,119 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-23 15:26:07,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:07,119 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-23 15:26:07,119 INFO L472 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-23 15:26:07,119 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-23 15:26:07,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-23 15:26:07,120 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:07,120 INFO L353 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-23 15:26:07,121 INFO L414 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:07,121 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-07-23 15:26:07,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:07,478 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 15:26:07,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:07,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-23 15:26:07,478 INFO L450 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-23 15:26:07,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-23 15:26:07,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:26:07,480 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-07-23 15:26:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:07,636 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-23 15:26:07,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-23 15:26:07,636 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-23 15:26:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:07,637 INFO L225 Difference]: With dead ends: 205 [2018-07-23 15:26:07,637 INFO L226 Difference]: Without dead ends: 203 [2018-07-23 15:26:07,638 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-23 15:26:07,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-23 15:26:07,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-23 15:26:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-23 15:26:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-23 15:26:07,644 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-23 15:26:07,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:07,645 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-23 15:26:07,645 INFO L472 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-23 15:26:07,645 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-23 15:26:07,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-23 15:26:07,646 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:07,646 INFO L353 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-23 15:26:07,646 INFO L414 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:07,646 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-07-23 15:26:07,647 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:07,979 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 15:26:07,979 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:07,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-23 15:26:07,979 INFO L450 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-23 15:26:07,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-23 15:26:07,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:26:07,981 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-07-23 15:26:08,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:08,146 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-23 15:26:08,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-23 15:26:08,146 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-23 15:26:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:08,147 INFO L225 Difference]: With dead ends: 207 [2018-07-23 15:26:08,147 INFO L226 Difference]: Without dead ends: 205 [2018-07-23 15:26:08,148 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-23 15:26:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-23 15:26:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-23 15:26:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-23 15:26:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-23 15:26:08,154 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-23 15:26:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:08,154 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-23 15:26:08,154 INFO L472 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-23 15:26:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-23 15:26:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-23 15:26:08,156 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:08,156 INFO L353 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-23 15:26:08,156 INFO L414 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:08,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-07-23 15:26:08,156 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:08,485 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 15:26:08,486 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:08,486 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-23 15:26:08,486 INFO L450 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-23 15:26:08,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-23 15:26:08,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:26:08,488 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-07-23 15:26:08,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:08,575 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-23 15:26:08,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-23 15:26:08,575 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-23 15:26:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:08,576 INFO L225 Difference]: With dead ends: 209 [2018-07-23 15:26:08,576 INFO L226 Difference]: Without dead ends: 207 [2018-07-23 15:26:08,577 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-23 15:26:08,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-23 15:26:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-23 15:26:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-23 15:26:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-23 15:26:08,583 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-23 15:26:08,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:08,583 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-23 15:26:08,583 INFO L472 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-23 15:26:08,584 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-23 15:26:08,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-23 15:26:08,585 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:08,585 INFO L353 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-23 15:26:08,585 INFO L414 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:08,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-07-23 15:26:08,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:08,942 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 15:26:08,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:08,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-23 15:26:08,943 INFO L450 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-23 15:26:08,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-23 15:26:08,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:26:08,945 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-07-23 15:26:09,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:09,084 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-23 15:26:09,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-23 15:26:09,084 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-23 15:26:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:09,085 INFO L225 Difference]: With dead ends: 211 [2018-07-23 15:26:09,085 INFO L226 Difference]: Without dead ends: 209 [2018-07-23 15:26:09,086 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-23 15:26:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-23 15:26:09,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-23 15:26:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-23 15:26:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-23 15:26:09,092 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-23 15:26:09,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:09,092 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-23 15:26:09,093 INFO L472 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-23 15:26:09,093 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-23 15:26:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-23 15:26:09,094 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:09,094 INFO L353 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-23 15:26:09,094 INFO L414 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:09,094 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-07-23 15:26:09,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:09,409 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 15:26:09,409 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:09,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-23 15:26:09,410 INFO L450 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-23 15:26:09,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-23 15:26:09,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:26:09,412 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-07-23 15:26:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:09,606 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-23 15:26:09,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-23 15:26:09,606 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-23 15:26:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:09,607 INFO L225 Difference]: With dead ends: 213 [2018-07-23 15:26:09,607 INFO L226 Difference]: Without dead ends: 211 [2018-07-23 15:26:09,608 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-23 15:26:09,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-23 15:26:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-23 15:26:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-23 15:26:09,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-23 15:26:09,612 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-07-23 15:26:09,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:09,613 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-23 15:26:09,613 INFO L472 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-23 15:26:09,613 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-23 15:26:09,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-23 15:26:09,614 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:09,614 INFO L353 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-07-23 15:26:09,615 INFO L414 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:09,615 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-07-23 15:26:09,615 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:09,976 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 15:26:09,976 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:09,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-23 15:26:09,977 INFO L450 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-23 15:26:09,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-23 15:26:09,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:26:09,979 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-07-23 15:26:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:10,080 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-23 15:26:10,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-23 15:26:10,080 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-23 15:26:10,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:10,081 INFO L225 Difference]: With dead ends: 215 [2018-07-23 15:26:10,081 INFO L226 Difference]: Without dead ends: 213 [2018-07-23 15:26:10,082 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-23 15:26:10,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-23 15:26:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-23 15:26:10,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-23 15:26:10,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-23 15:26:10,087 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-07-23 15:26:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:10,088 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-23 15:26:10,088 INFO L472 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-23 15:26:10,088 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-23 15:26:10,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-23 15:26:10,089 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:10,089 INFO L353 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-07-23 15:26:10,089 INFO L414 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:10,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-07-23 15:26:10,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:10,458 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 15:26:10,459 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:10,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-23 15:26:10,459 INFO L450 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-23 15:26:10,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-23 15:26:10,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:26:10,462 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-07-23 15:26:10,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:10,674 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-23 15:26:10,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-23 15:26:10,674 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-23 15:26:10,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:10,674 INFO L225 Difference]: With dead ends: 217 [2018-07-23 15:26:10,674 INFO L226 Difference]: Without dead ends: 215 [2018-07-23 15:26:10,675 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-23 15:26:10,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-23 15:26:10,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-23 15:26:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-23 15:26:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-23 15:26:10,680 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-07-23 15:26:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:10,680 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-23 15:26:10,680 INFO L472 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-23 15:26:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-23 15:26:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-23 15:26:10,681 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:10,681 INFO L353 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-07-23 15:26:10,681 INFO L414 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-07-23 15:26:10,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:11,029 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 15:26:11,030 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:11,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-23 15:26:11,030 INFO L450 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-23 15:26:11,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-23 15:26:11,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:26:11,032 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-07-23 15:26:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:11,197 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-23 15:26:11,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-23 15:26:11,197 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-23 15:26:11,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:11,198 INFO L225 Difference]: With dead ends: 219 [2018-07-23 15:26:11,198 INFO L226 Difference]: Without dead ends: 217 [2018-07-23 15:26:11,199 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-23 15:26:11,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-23 15:26:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-23 15:26:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-23 15:26:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-23 15:26:11,204 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-07-23 15:26:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:11,204 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-23 15:26:11,204 INFO L472 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-23 15:26:11,204 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-23 15:26:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-23 15:26:11,205 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:11,205 INFO L353 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-07-23 15:26:11,205 INFO L414 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:11,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-07-23 15:26:11,206 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:11,547 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 15:26:11,547 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:11,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-23 15:26:11,548 INFO L450 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-23 15:26:11,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-23 15:26:11,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:26:11,550 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-07-23 15:26:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:11,792 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-23 15:26:11,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-23 15:26:11,793 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-23 15:26:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:11,793 INFO L225 Difference]: With dead ends: 221 [2018-07-23 15:26:11,794 INFO L226 Difference]: Without dead ends: 219 [2018-07-23 15:26:11,795 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-23 15:26:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-23 15:26:11,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-23 15:26:11,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-23 15:26:11,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-23 15:26:11,800 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-07-23 15:26:11,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:11,800 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-23 15:26:11,800 INFO L472 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-23 15:26:11,800 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-23 15:26:11,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-23 15:26:11,801 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:11,801 INFO L353 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-07-23 15:26:11,801 INFO L414 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:11,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-07-23 15:26:11,802 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:12,198 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 15:26:12,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:12,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-23 15:26:12,199 INFO L450 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-23 15:26:12,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-23 15:26:12,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:26:12,201 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-07-23 15:26:12,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:12,417 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-23 15:26:12,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-23 15:26:12,418 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-23 15:26:12,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:12,419 INFO L225 Difference]: With dead ends: 223 [2018-07-23 15:26:12,419 INFO L226 Difference]: Without dead ends: 221 [2018-07-23 15:26:12,420 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-23 15:26:12,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-23 15:26:12,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-23 15:26:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-23 15:26:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-23 15:26:12,427 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-07-23 15:26:12,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:12,427 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-23 15:26:12,428 INFO L472 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-23 15:26:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-23 15:26:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-23 15:26:12,429 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:12,429 INFO L353 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-07-23 15:26:12,429 INFO L414 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:12,430 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-07-23 15:26:12,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:12,888 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 15:26:12,888 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:12,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-23 15:26:12,889 INFO L450 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-23 15:26:12,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-23 15:26:12,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:26:12,891 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-07-23 15:26:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:13,079 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-23 15:26:13,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-23 15:26:13,080 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-23 15:26:13,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:13,080 INFO L225 Difference]: With dead ends: 225 [2018-07-23 15:26:13,081 INFO L226 Difference]: Without dead ends: 223 [2018-07-23 15:26:13,081 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-23 15:26:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-23 15:26:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-23 15:26:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-23 15:26:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-23 15:26:13,087 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-07-23 15:26:13,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:13,087 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-23 15:26:13,087 INFO L472 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-23 15:26:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-23 15:26:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-23 15:26:13,088 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:13,089 INFO L353 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-07-23 15:26:13,089 INFO L414 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:13,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-07-23 15:26:13,089 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:13,418 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 15:26:13,418 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:13,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-23 15:26:13,418 INFO L450 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-23 15:26:13,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-23 15:26:13,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:26:13,420 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-07-23 15:26:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:13,570 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-23 15:26:13,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-23 15:26:13,570 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-23 15:26:13,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:13,571 INFO L225 Difference]: With dead ends: 227 [2018-07-23 15:26:13,571 INFO L226 Difference]: Without dead ends: 225 [2018-07-23 15:26:13,571 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-23 15:26:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-23 15:26:13,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-23 15:26:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-23 15:26:13,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-23 15:26:13,574 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-07-23 15:26:13,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:13,575 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-23 15:26:13,575 INFO L472 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-23 15:26:13,575 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-23 15:26:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-23 15:26:13,575 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:13,576 INFO L353 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-07-23 15:26:13,576 INFO L414 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:13,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-07-23 15:26:13,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:13,913 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 15:26:13,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:13,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-23 15:26:13,914 INFO L450 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-23 15:26:13,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-23 15:26:13,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:26:13,915 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-07-23 15:26:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:14,039 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-23 15:26:14,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-23 15:26:14,039 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-23 15:26:14,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:14,040 INFO L225 Difference]: With dead ends: 229 [2018-07-23 15:26:14,040 INFO L226 Difference]: Without dead ends: 227 [2018-07-23 15:26:14,041 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-23 15:26:14,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-23 15:26:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-23 15:26:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-23 15:26:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-23 15:26:14,045 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-07-23 15:26:14,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:14,046 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-23 15:26:14,046 INFO L472 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-23 15:26:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-23 15:26:14,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-23 15:26:14,047 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:14,047 INFO L353 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-07-23 15:26:14,047 INFO L414 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:14,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-07-23 15:26:14,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:14,388 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 15:26:14,389 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:14,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-23 15:26:14,389 INFO L450 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-23 15:26:14,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-23 15:26:14,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:26:14,391 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-07-23 15:26:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:14,521 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-23 15:26:14,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-23 15:26:14,521 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-23 15:26:14,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:14,522 INFO L225 Difference]: With dead ends: 231 [2018-07-23 15:26:14,522 INFO L226 Difference]: Without dead ends: 229 [2018-07-23 15:26:14,523 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-23 15:26:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-23 15:26:14,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-23 15:26:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-23 15:26:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-23 15:26:14,528 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-07-23 15:26:14,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:14,528 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-23 15:26:14,528 INFO L472 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-23 15:26:14,528 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-23 15:26:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-23 15:26:14,529 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:14,529 INFO L353 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-07-23 15:26:14,529 INFO L414 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:14,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-07-23 15:26:14,529 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:14,881 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 15:26:14,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:14,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-23 15:26:14,881 INFO L450 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-23 15:26:14,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-23 15:26:14,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:26:14,883 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-07-23 15:26:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:15,050 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-23 15:26:15,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-23 15:26:15,050 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-23 15:26:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:15,050 INFO L225 Difference]: With dead ends: 233 [2018-07-23 15:26:15,050 INFO L226 Difference]: Without dead ends: 231 [2018-07-23 15:26:15,051 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-23 15:26:15,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-23 15:26:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-23 15:26:15,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-23 15:26:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-23 15:26:15,056 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-07-23 15:26:15,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:15,056 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-23 15:26:15,056 INFO L472 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-23 15:26:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-23 15:26:15,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-23 15:26:15,057 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:15,057 INFO L353 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-07-23 15:26:15,058 INFO L414 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:15,058 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-07-23 15:26:15,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:15,457 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 15:26:15,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:15,458 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-23 15:26:15,458 INFO L450 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-23 15:26:15,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-23 15:26:15,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:26:15,460 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-07-23 15:26:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:15,693 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-23 15:26:15,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-23 15:26:15,694 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-23 15:26:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:15,694 INFO L225 Difference]: With dead ends: 235 [2018-07-23 15:26:15,695 INFO L226 Difference]: Without dead ends: 233 [2018-07-23 15:26:15,696 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-23 15:26:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-23 15:26:15,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-23 15:26:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-23 15:26:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-23 15:26:15,701 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-07-23 15:26:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:15,701 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-23 15:26:15,702 INFO L472 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-23 15:26:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-23 15:26:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-23 15:26:15,703 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:15,703 INFO L353 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-07-23 15:26:15,703 INFO L414 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-07-23 15:26:15,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:16,103 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 15:26:16,103 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:16,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-23 15:26:16,103 INFO L450 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-23 15:26:16,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-23 15:26:16,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:26:16,106 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-07-23 15:26:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:16,364 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-23 15:26:16,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-23 15:26:16,365 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-23 15:26:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:16,366 INFO L225 Difference]: With dead ends: 237 [2018-07-23 15:26:16,366 INFO L226 Difference]: Without dead ends: 235 [2018-07-23 15:26:16,367 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-23 15:26:16,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-23 15:26:16,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-23 15:26:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-23 15:26:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-23 15:26:16,372 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-07-23 15:26:16,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:16,372 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-23 15:26:16,372 INFO L472 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-23 15:26:16,372 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-23 15:26:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-23 15:26:16,373 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:16,373 INFO L353 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-07-23 15:26:16,374 INFO L414 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:16,374 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-07-23 15:26:16,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:16,753 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 15:26:16,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:16,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-23 15:26:16,754 INFO L450 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-23 15:26:16,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-23 15:26:16,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:26:16,755 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-07-23 15:26:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:16,939 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-23 15:26:16,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-23 15:26:16,939 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-23 15:26:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:16,940 INFO L225 Difference]: With dead ends: 239 [2018-07-23 15:26:16,940 INFO L226 Difference]: Without dead ends: 237 [2018-07-23 15:26:16,940 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-23 15:26:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-23 15:26:16,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-23 15:26:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-23 15:26:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-23 15:26:16,945 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-07-23 15:26:16,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:16,946 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-23 15:26:16,946 INFO L472 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-23 15:26:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-23 15:26:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-23 15:26:16,947 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:16,947 INFO L353 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-07-23 15:26:16,948 INFO L414 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:16,949 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-07-23 15:26:16,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:17,378 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 15:26:17,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:17,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-23 15:26:17,378 INFO L450 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-23 15:26:17,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-23 15:26:17,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:26:17,380 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-07-23 15:26:17,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:17,603 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-23 15:26:17,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-23 15:26:17,603 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-07-23 15:26:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:17,604 INFO L225 Difference]: With dead ends: 241 [2018-07-23 15:26:17,604 INFO L226 Difference]: Without dead ends: 239 [2018-07-23 15:26:17,604 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-23 15:26:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-23 15:26:17,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-23 15:26:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-23 15:26:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-23 15:26:17,608 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-07-23 15:26:17,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:17,608 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-23 15:26:17,609 INFO L472 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-23 15:26:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-23 15:26:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-23 15:26:17,609 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:17,609 INFO L353 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-07-23 15:26:17,609 INFO L414 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:17,610 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-07-23 15:26:17,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:18,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:18,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-23 15:26:18,042 INFO L450 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-23 15:26:18,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-23 15:26:18,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:26:18,045 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-07-23 15:26:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:18,207 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-23 15:26:18,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-23 15:26:18,208 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-23 15:26:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:18,208 INFO L225 Difference]: With dead ends: 243 [2018-07-23 15:26:18,208 INFO L226 Difference]: Without dead ends: 241 [2018-07-23 15:26:18,209 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-23 15:26:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-23 15:26:18,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-23 15:26:18,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-23 15:26:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-23 15:26:18,216 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-07-23 15:26:18,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:18,216 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-23 15:26:18,216 INFO L472 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-23 15:26:18,217 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-23 15:26:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-23 15:26:18,218 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:18,218 INFO L353 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-07-23 15:26:18,218 INFO L414 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:18,218 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-07-23 15:26:18,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:18,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:18,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-23 15:26:18,738 INFO L450 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-23 15:26:18,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-23 15:26:18,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:26:18,739 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 121 states. [2018-07-23 15:26:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:18,919 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-23 15:26:18,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-23 15:26:18,920 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 240 [2018-07-23 15:26:18,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:18,920 INFO L225 Difference]: With dead ends: 245 [2018-07-23 15:26:18,921 INFO L226 Difference]: Without dead ends: 243 [2018-07-23 15:26:18,922 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-23 15:26:18,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-23 15:26:18,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-23 15:26:18,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-23 15:26:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-23 15:26:18,925 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-07-23 15:26:18,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:18,925 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-23 15:26:18,925 INFO L472 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-23 15:26:18,925 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-23 15:26:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-23 15:26:18,926 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:18,926 INFO L353 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-07-23 15:26:18,926 INFO L414 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:18,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1239446717, now seen corresponding path program 119 times [2018-07-23 15:26:18,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:19,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:19,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:19,314 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-23 15:26:19,314 INFO L450 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-23 15:26:19,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-23 15:26:19,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-23 15:26:19,316 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 122 states. [2018-07-23 15:26:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:19,560 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-23 15:26:19,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-23 15:26:19,560 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-23 15:26:19,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:19,561 INFO L225 Difference]: With dead ends: 247 [2018-07-23 15:26:19,561 INFO L226 Difference]: Without dead ends: 245 [2018-07-23 15:26:19,563 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-23 15:26:19,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-23 15:26:19,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-23 15:26:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-23 15:26:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-23 15:26:19,567 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-07-23 15:26:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:19,568 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-23 15:26:19,568 INFO L472 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-23 15:26:19,568 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-23 15:26:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-23 15:26:19,569 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:19,569 INFO L353 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-07-23 15:26:19,569 INFO L414 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:19,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1402406135, now seen corresponding path program 120 times [2018-07-23 15:26:19,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:19,971 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:19,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-23 15:26:19,972 INFO L450 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-23 15:26:19,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-23 15:26:19,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-23 15:26:19,973 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 123 states. [2018-07-23 15:26:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:20,247 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-23 15:26:20,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-23 15:26:20,247 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 244 [2018-07-23 15:26:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:20,247 INFO L225 Difference]: With dead ends: 249 [2018-07-23 15:26:20,248 INFO L226 Difference]: Without dead ends: 247 [2018-07-23 15:26:20,248 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-23 15:26:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-23 15:26:20,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-23 15:26:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-23 15:26:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-23 15:26:20,252 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-07-23 15:26:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:20,252 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-23 15:26:20,252 INFO L472 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-23 15:26:20,253 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-23 15:26:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-23 15:26:20,254 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:20,254 INFO L353 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-07-23 15:26:20,254 INFO L414 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:20,254 INFO L82 PathProgramCache]: Analyzing trace with hash -907383119, now seen corresponding path program 121 times [2018-07-23 15:26:20,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:20,667 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:20,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-23 15:26:20,667 INFO L450 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-23 15:26:20,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-23 15:26:20,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:26:20,669 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 124 states. [2018-07-23 15:26:20,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:20,967 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-23 15:26:20,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-23 15:26:20,967 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-23 15:26:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:20,968 INFO L225 Difference]: With dead ends: 251 [2018-07-23 15:26:20,968 INFO L226 Difference]: Without dead ends: 249 [2018-07-23 15:26:20,970 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-23 15:26:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-23 15:26:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-23 15:26:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-23 15:26:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-23 15:26:20,976 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-07-23 15:26:20,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:20,976 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-23 15:26:20,976 INFO L472 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-23 15:26:20,976 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-23 15:26:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-23 15:26:20,978 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:20,978 INFO L353 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-07-23 15:26:20,978 INFO L414 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:20,978 INFO L82 PathProgramCache]: Analyzing trace with hash -116764181, now seen corresponding path program 122 times [2018-07-23 15:26:20,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:21,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:21,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-23 15:26:21,741 INFO L450 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-23 15:26:21,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-23 15:26:21,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:26:21,743 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 125 states. [2018-07-23 15:26:21,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:21,995 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-23 15:26:21,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-23 15:26:21,995 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 248 [2018-07-23 15:26:21,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:21,996 INFO L225 Difference]: With dead ends: 253 [2018-07-23 15:26:21,996 INFO L226 Difference]: Without dead ends: 251 [2018-07-23 15:26:21,997 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-23 15:26:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-23 15:26:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-23 15:26:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-23 15:26:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-23 15:26:22,002 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-07-23 15:26:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:22,002 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-23 15:26:22,002 INFO L472 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-23 15:26:22,002 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-23 15:26:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-23 15:26:22,003 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:22,003 INFO L353 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-07-23 15:26:22,003 INFO L414 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:22,004 INFO L82 PathProgramCache]: Analyzing trace with hash -541176155, now seen corresponding path program 123 times [2018-07-23 15:26:22,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:22,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:22,468 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-23 15:26:22,469 INFO L450 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-23 15:26:22,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-23 15:26:22,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:26:22,470 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 126 states. [2018-07-23 15:26:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:22,599 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-23 15:26:22,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-23 15:26:22,599 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-23 15:26:22,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:22,599 INFO L225 Difference]: With dead ends: 255 [2018-07-23 15:26:22,600 INFO L226 Difference]: Without dead ends: 253 [2018-07-23 15:26:22,600 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-23 15:26:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-23 15:26:22,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-23 15:26:22,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-23 15:26:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-23 15:26:22,605 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-07-23 15:26:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:22,605 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-23 15:26:22,605 INFO L472 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-23 15:26:22,606 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-23 15:26:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-23 15:26:22,607 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:22,607 INFO L353 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-07-23 15:26:22,607 INFO L414 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:22,607 INFO L82 PathProgramCache]: Analyzing trace with hash -379190049, now seen corresponding path program 124 times [2018-07-23 15:26:22,607 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:23,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:23,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-23 15:26:23,039 INFO L450 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-23 15:26:23,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-23 15:26:23,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:26:23,041 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 127 states. [2018-07-23 15:26:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:23,352 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-23 15:26:23,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-23 15:26:23,352 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 252 [2018-07-23 15:26:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:23,352 INFO L225 Difference]: With dead ends: 257 [2018-07-23 15:26:23,352 INFO L226 Difference]: Without dead ends: 255 [2018-07-23 15:26:23,353 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-23 15:26:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-23 15:26:23,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-23 15:26:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-23 15:26:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-23 15:26:23,356 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-07-23 15:26:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:23,357 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-23 15:26:23,357 INFO L472 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-23 15:26:23,357 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-23 15:26:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-23 15:26:23,358 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:23,358 INFO L353 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-07-23 15:26:23,358 INFO L414 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:23,358 INFO L82 PathProgramCache]: Analyzing trace with hash 670635161, now seen corresponding path program 125 times [2018-07-23 15:26:23,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:23,818 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:23,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-23 15:26:23,818 INFO L450 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-23 15:26:23,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-23 15:26:23,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:26:23,820 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 128 states. [2018-07-23 15:26:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:23,996 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-23 15:26:23,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-23 15:26:23,997 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-23 15:26:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:23,997 INFO L225 Difference]: With dead ends: 259 [2018-07-23 15:26:23,997 INFO L226 Difference]: Without dead ends: 257 [2018-07-23 15:26:23,999 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-23 15:26:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-23 15:26:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-23 15:26:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-23 15:26:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-23 15:26:24,004 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-07-23 15:26:24,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:24,004 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-23 15:26:24,004 INFO L472 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-23 15:26:24,005 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-23 15:26:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-23 15:26:24,006 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:24,006 INFO L353 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-07-23 15:26:24,006 INFO L414 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:24,006 INFO L82 PathProgramCache]: Analyzing trace with hash 235347411, now seen corresponding path program 126 times [2018-07-23 15:26:24,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:24,715 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:24,715 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-23 15:26:24,716 INFO L450 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-23 15:26:24,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-23 15:26:24,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:26:24,718 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 129 states. [2018-07-23 15:26:25,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:25,037 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-23 15:26:25,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-23 15:26:25,037 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 256 [2018-07-23 15:26:25,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:25,038 INFO L225 Difference]: With dead ends: 261 [2018-07-23 15:26:25,038 INFO L226 Difference]: Without dead ends: 259 [2018-07-23 15:26:25,040 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-23 15:26:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-23 15:26:25,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-23 15:26:25,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-23 15:26:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-07-23 15:26:25,044 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-07-23 15:26:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:25,045 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-07-23 15:26:25,045 INFO L472 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-23 15:26:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-07-23 15:26:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-23 15:26:25,046 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:25,046 INFO L353 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-07-23 15:26:25,046 INFO L414 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:25,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1464352627, now seen corresponding path program 127 times [2018-07-23 15:26:25,047 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:25,712 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:25,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-23 15:26:25,713 INFO L450 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-23 15:26:25,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-23 15:26:25,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:26:25,715 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 130 states. [2018-07-23 15:26:25,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:25,830 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-23 15:26:25,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-23 15:26:25,831 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-23 15:26:25,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:25,831 INFO L225 Difference]: With dead ends: 263 [2018-07-23 15:26:25,831 INFO L226 Difference]: Without dead ends: 261 [2018-07-23 15:26:25,832 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-23 15:26:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-23 15:26:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-23 15:26:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-23 15:26:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-07-23 15:26:25,836 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-07-23 15:26:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:25,837 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-07-23 15:26:25,837 INFO L472 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-23 15:26:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-07-23 15:26:25,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-23 15:26:25,838 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:25,838 INFO L353 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-07-23 15:26:25,838 INFO L414 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1506450631, now seen corresponding path program 128 times [2018-07-23 15:26:25,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:26,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:26,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-23 15:26:26,285 INFO L450 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-23 15:26:26,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-23 15:26:26,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-23 15:26:26,288 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 131 states. [2018-07-23 15:26:26,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:26,572 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-23 15:26:26,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-23 15:26:26,573 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 260 [2018-07-23 15:26:26,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:26,573 INFO L225 Difference]: With dead ends: 265 [2018-07-23 15:26:26,573 INFO L226 Difference]: Without dead ends: 263 [2018-07-23 15:26:26,575 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-23 15:26:26,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-23 15:26:26,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-23 15:26:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-23 15:26:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-07-23 15:26:26,578 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-07-23 15:26:26,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:26,578 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-07-23 15:26:26,579 INFO L472 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-23 15:26:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-07-23 15:26:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-23 15:26:26,579 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:26,579 INFO L353 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-07-23 15:26:26,580 INFO L414 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:26,580 INFO L82 PathProgramCache]: Analyzing trace with hash 295129729, now seen corresponding path program 129 times [2018-07-23 15:26:26,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:27,038 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:27,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-23 15:26:27,039 INFO L450 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-23 15:26:27,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-23 15:26:27,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:26:27,042 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 132 states. [2018-07-23 15:26:27,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:27,372 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-23 15:26:27,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-23 15:26:27,372 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-23 15:26:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:27,373 INFO L225 Difference]: With dead ends: 267 [2018-07-23 15:26:27,373 INFO L226 Difference]: Without dead ends: 265 [2018-07-23 15:26:27,374 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-23 15:26:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-23 15:26:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-23 15:26:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-23 15:26:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-07-23 15:26:27,378 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-07-23 15:26:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:27,379 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-07-23 15:26:27,379 INFO L472 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-23 15:26:27,379 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-07-23 15:26:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-23 15:26:27,380 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:27,380 INFO L353 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-07-23 15:26:27,380 INFO L414 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:27,381 INFO L82 PathProgramCache]: Analyzing trace with hash 151880123, now seen corresponding path program 130 times [2018-07-23 15:26:27,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:27,945 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:27,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-23 15:26:27,945 INFO L450 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-23 15:26:27,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-23 15:26:27,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-23 15:26:27,947 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 133 states. [2018-07-23 15:26:28,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:28,125 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-23 15:26:28,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-23 15:26:28,125 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 264 [2018-07-23 15:26:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:28,126 INFO L225 Difference]: With dead ends: 269 [2018-07-23 15:26:28,126 INFO L226 Difference]: Without dead ends: 267 [2018-07-23 15:26:28,127 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-23 15:26:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-23 15:26:28,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-23 15:26:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-23 15:26:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-07-23 15:26:28,130 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-07-23 15:26:28,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:28,131 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-07-23 15:26:28,131 INFO L472 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-23 15:26:28,131 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-07-23 15:26:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-23 15:26:28,131 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:28,131 INFO L353 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-07-23 15:26:28,132 INFO L414 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:28,132 INFO L82 PathProgramCache]: Analyzing trace with hash -72037771, now seen corresponding path program 131 times [2018-07-23 15:26:28,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:28,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:28,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-23 15:26:28,625 INFO L450 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-23 15:26:28,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-23 15:26:28,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-23 15:26:28,627 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 134 states. [2018-07-23 15:26:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:28,958 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-23 15:26:28,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-23 15:26:28,958 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-23 15:26:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:28,959 INFO L225 Difference]: With dead ends: 271 [2018-07-23 15:26:28,959 INFO L226 Difference]: Without dead ends: 269 [2018-07-23 15:26:28,960 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-23 15:26:28,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-23 15:26:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-23 15:26:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-23 15:26:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-07-23 15:26:28,965 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-07-23 15:26:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:28,965 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-07-23 15:26:28,965 INFO L472 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-23 15:26:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-07-23 15:26:28,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-23 15:26:28,966 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:28,967 INFO L353 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-07-23 15:26:28,967 INFO L414 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:28,967 INFO L82 PathProgramCache]: Analyzing trace with hash -508769105, now seen corresponding path program 132 times [2018-07-23 15:26:28,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:29,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:29,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-23 15:26:29,501 INFO L450 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-23 15:26:29,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-23 15:26:29,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-23 15:26:29,502 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 135 states. [2018-07-23 15:26:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:29,909 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-23 15:26:29,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-23 15:26:29,909 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 268 [2018-07-23 15:26:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:29,910 INFO L225 Difference]: With dead ends: 273 [2018-07-23 15:26:29,910 INFO L226 Difference]: Without dead ends: 271 [2018-07-23 15:26:29,910 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-23 15:26:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-23 15:26:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-23 15:26:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-23 15:26:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-07-23 15:26:29,915 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-07-23 15:26:29,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:29,915 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-07-23 15:26:29,915 INFO L472 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-23 15:26:29,915 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-07-23 15:26:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-23 15:26:29,916 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:29,916 INFO L353 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-07-23 15:26:29,916 INFO L414 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:29,917 INFO L82 PathProgramCache]: Analyzing trace with hash 699213929, now seen corresponding path program 133 times [2018-07-23 15:26:29,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:30,425 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:30,425 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-23 15:26:30,425 INFO L450 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-23 15:26:30,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-23 15:26:30,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:26:30,429 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 136 states. [2018-07-23 15:26:30,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:30,680 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-23 15:26:30,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-23 15:26:30,681 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-23 15:26:30,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:30,681 INFO L225 Difference]: With dead ends: 275 [2018-07-23 15:26:30,681 INFO L226 Difference]: Without dead ends: 273 [2018-07-23 15:26:30,682 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-23 15:26:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-23 15:26:30,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-23 15:26:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-23 15:26:30,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-07-23 15:26:30,687 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-07-23 15:26:30,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:30,687 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-07-23 15:26:30,687 INFO L472 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-23 15:26:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-07-23 15:26:30,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-23 15:26:30,689 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:30,689 INFO L353 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-07-23 15:26:30,689 INFO L414 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:30,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1929739683, now seen corresponding path program 134 times [2018-07-23 15:26:30,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:31,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:31,269 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-23 15:26:31,269 INFO L450 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-23 15:26:31,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-23 15:26:31,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-23 15:26:31,271 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 137 states. [2018-07-23 15:26:31,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:31,422 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-23 15:26:31,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-23 15:26:31,422 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 272 [2018-07-23 15:26:31,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:31,423 INFO L225 Difference]: With dead ends: 277 [2018-07-23 15:26:31,423 INFO L226 Difference]: Without dead ends: 275 [2018-07-23 15:26:31,424 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-23 15:26:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-23 15:26:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-23 15:26:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-23 15:26:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-07-23 15:26:31,429 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-07-23 15:26:31,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:31,429 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-07-23 15:26:31,429 INFO L472 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-23 15:26:31,429 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-07-23 15:26:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-23 15:26:31,431 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:31,431 INFO L353 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-07-23 15:26:31,431 INFO L414 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:31,431 INFO L82 PathProgramCache]: Analyzing trace with hash -945984419, now seen corresponding path program 135 times [2018-07-23 15:26:31,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:32,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:32,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-23 15:26:32,192 INFO L450 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-23 15:26:32,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-23 15:26:32,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:26:32,194 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 138 states. [2018-07-23 15:26:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:32,577 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-23 15:26:32,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-23 15:26:32,577 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-23 15:26:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:32,577 INFO L225 Difference]: With dead ends: 279 [2018-07-23 15:26:32,577 INFO L226 Difference]: Without dead ends: 277 [2018-07-23 15:26:32,578 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-23 15:26:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-23 15:26:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-23 15:26:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-23 15:26:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-07-23 15:26:32,582 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-07-23 15:26:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:32,582 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-07-23 15:26:32,582 INFO L472 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-23 15:26:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-07-23 15:26:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-23 15:26:32,583 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:32,583 INFO L353 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-07-23 15:26:32,583 INFO L414 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:32,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1442092183, now seen corresponding path program 136 times [2018-07-23 15:26:32,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:33,180 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:33,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-23 15:26:33,180 INFO L450 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-23 15:26:33,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-23 15:26:33,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-23 15:26:33,182 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 139 states. [2018-07-23 15:26:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:33,582 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-23 15:26:33,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-23 15:26:33,583 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 276 [2018-07-23 15:26:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:33,583 INFO L225 Difference]: With dead ends: 281 [2018-07-23 15:26:33,583 INFO L226 Difference]: Without dead ends: 279 [2018-07-23 15:26:33,584 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-23 15:26:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-23 15:26:33,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-23 15:26:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-23 15:26:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-07-23 15:26:33,588 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-07-23 15:26:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:33,589 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-07-23 15:26:33,589 INFO L472 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-23 15:26:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-07-23 15:26:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-23 15:26:33,590 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:33,590 INFO L353 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-07-23 15:26:33,590 INFO L414 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1423796655, now seen corresponding path program 137 times [2018-07-23 15:26:33,591 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:34,113 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:34,113 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-23 15:26:34,113 INFO L450 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-23 15:26:34,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-23 15:26:34,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-23 15:26:34,116 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 140 states. [2018-07-23 15:26:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:34,508 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-23 15:26:34,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-23 15:26:34,508 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-23 15:26:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:34,509 INFO L225 Difference]: With dead ends: 283 [2018-07-23 15:26:34,509 INFO L226 Difference]: Without dead ends: 281 [2018-07-23 15:26:34,511 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-23 15:26:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-23 15:26:34,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-23 15:26:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-23 15:26:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-07-23 15:26:34,515 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-07-23 15:26:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:34,516 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-07-23 15:26:34,516 INFO L472 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-23 15:26:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-07-23 15:26:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-23 15:26:34,517 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:34,517 INFO L353 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-07-23 15:26:34,517 INFO L414 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:34,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1826034059, now seen corresponding path program 138 times [2018-07-23 15:26:34,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:35,061 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:35,061 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-23 15:26:35,061 INFO L450 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-23 15:26:35,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-23 15:26:35,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:26:35,063 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 141 states. [2018-07-23 15:26:35,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:35,468 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-23 15:26:35,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-23 15:26:35,468 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 280 [2018-07-23 15:26:35,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:35,469 INFO L225 Difference]: With dead ends: 285 [2018-07-23 15:26:35,469 INFO L226 Difference]: Without dead ends: 283 [2018-07-23 15:26:35,470 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-23 15:26:35,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-23 15:26:35,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-23 15:26:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-23 15:26:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-07-23 15:26:35,473 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-07-23 15:26:35,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:35,473 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-07-23 15:26:35,473 INFO L472 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-23 15:26:35,473 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-07-23 15:26:35,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-23 15:26:35,474 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:35,474 INFO L353 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-07-23 15:26:35,474 INFO L414 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:35,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1822841275, now seen corresponding path program 139 times [2018-07-23 15:26:35,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:36,034 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:36,034 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-23 15:26:36,034 INFO L450 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-23 15:26:36,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-23 15:26:36,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-23 15:26:36,037 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 142 states. [2018-07-23 15:26:36,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:36,502 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-23 15:26:36,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-23 15:26:36,503 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-23 15:26:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:36,504 INFO L225 Difference]: With dead ends: 287 [2018-07-23 15:26:36,504 INFO L226 Difference]: Without dead ends: 285 [2018-07-23 15:26:36,505 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-23 15:26:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-23 15:26:36,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-23 15:26:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-23 15:26:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-07-23 15:26:36,508 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-07-23 15:26:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:36,508 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-07-23 15:26:36,508 INFO L472 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-23 15:26:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-07-23 15:26:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-23 15:26:36,509 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:36,509 INFO L353 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-07-23 15:26:36,509 INFO L414 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:36,510 INFO L82 PathProgramCache]: Analyzing trace with hash 596243583, now seen corresponding path program 140 times [2018-07-23 15:26:36,510 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:37,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:37,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-23 15:26:37,101 INFO L450 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-23 15:26:37,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-23 15:26:37,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-23 15:26:37,103 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 143 states. [2018-07-23 15:26:37,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:37,510 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-23 15:26:37,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-23 15:26:37,510 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 284 [2018-07-23 15:26:37,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:37,511 INFO L225 Difference]: With dead ends: 289 [2018-07-23 15:26:37,511 INFO L226 Difference]: Without dead ends: 287 [2018-07-23 15:26:37,512 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-23 15:26:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-23 15:26:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-23 15:26:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-23 15:26:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-07-23 15:26:37,516 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-07-23 15:26:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:37,517 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-07-23 15:26:37,517 INFO L472 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-23 15:26:37,517 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-07-23 15:26:37,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-23 15:26:37,518 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:37,518 INFO L353 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-07-23 15:26:37,519 INFO L414 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:37,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1759484985, now seen corresponding path program 141 times [2018-07-23 15:26:37,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:38,120 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:38,120 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-23 15:26:38,120 INFO L450 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-23 15:26:38,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-23 15:26:38,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:26:38,122 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 144 states. [2018-07-23 15:26:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:38,583 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-23 15:26:38,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-23 15:26:38,583 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-23 15:26:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:38,584 INFO L225 Difference]: With dead ends: 291 [2018-07-23 15:26:38,584 INFO L226 Difference]: Without dead ends: 289 [2018-07-23 15:26:38,585 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-23 15:26:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-23 15:26:38,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-23 15:26:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-23 15:26:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-07-23 15:26:38,590 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-07-23 15:26:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:38,590 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-07-23 15:26:38,590 INFO L472 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-23 15:26:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-07-23 15:26:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-23 15:26:38,591 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:38,591 INFO L353 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-07-23 15:26:38,592 INFO L414 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:38,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1351991949, now seen corresponding path program 142 times [2018-07-23 15:26:38,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:39,446 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:39,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-23 15:26:39,447 INFO L450 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-23 15:26:39,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-23 15:26:39,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-23 15:26:39,451 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 145 states. [2018-07-23 15:26:40,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:40,061 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-23 15:26:40,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-23 15:26:40,061 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 288 [2018-07-23 15:26:40,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:40,062 INFO L225 Difference]: With dead ends: 293 [2018-07-23 15:26:40,062 INFO L226 Difference]: Without dead ends: 291 [2018-07-23 15:26:40,063 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-23 15:26:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-23 15:26:40,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-23 15:26:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-23 15:26:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-07-23 15:26:40,066 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-07-23 15:26:40,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:40,066 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-07-23 15:26:40,066 INFO L472 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-23 15:26:40,066 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-07-23 15:26:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-23 15:26:40,067 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:40,067 INFO L353 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-07-23 15:26:40,067 INFO L414 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:40,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2110879789, now seen corresponding path program 143 times [2018-07-23 15:26:40,068 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:40,651 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:40,651 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-23 15:26:40,651 INFO L450 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-23 15:26:40,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-23 15:26:40,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-23 15:26:40,654 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 146 states. [2018-07-23 15:26:40,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:40,984 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-23 15:26:40,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-23 15:26:40,985 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-23 15:26:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:40,985 INFO L225 Difference]: With dead ends: 295 [2018-07-23 15:26:40,985 INFO L226 Difference]: Without dead ends: 293 [2018-07-23 15:26:40,986 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-23 15:26:40,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-23 15:26:40,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-23 15:26:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-23 15:26:40,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-07-23 15:26:40,989 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-07-23 15:26:40,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:40,990 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-07-23 15:26:40,990 INFO L472 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-23 15:26:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-07-23 15:26:40,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-23 15:26:40,990 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:40,990 INFO L353 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-07-23 15:26:40,991 INFO L414 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:40,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965607, now seen corresponding path program 144 times [2018-07-23 15:26:40,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:41,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:41,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-23 15:26:41,620 INFO L450 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-23 15:26:41,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-23 15:26:41,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-23 15:26:41,622 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 147 states. [2018-07-23 15:26:41,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:41,802 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-23 15:26:41,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-23 15:26:41,802 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 292 [2018-07-23 15:26:41,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:41,803 INFO L225 Difference]: With dead ends: 297 [2018-07-23 15:26:41,803 INFO L226 Difference]: Without dead ends: 295 [2018-07-23 15:26:41,803 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-23 15:26:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-23 15:26:41,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-23 15:26:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-23 15:26:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-07-23 15:26:41,806 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-07-23 15:26:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:41,806 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-07-23 15:26:41,806 INFO L472 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-23 15:26:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-07-23 15:26:41,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-23 15:26:41,808 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:41,808 INFO L353 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-07-23 15:26:41,808 INFO L414 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:41,808 INFO L82 PathProgramCache]: Analyzing trace with hash -842253791, now seen corresponding path program 145 times [2018-07-23 15:26:41,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:42,483 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:42,484 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-23 15:26:42,484 INFO L450 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-23 15:26:42,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-23 15:26:42,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:26:42,487 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 148 states. [2018-07-23 15:26:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:42,973 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-23 15:26:42,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-23 15:26:42,973 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-23 15:26:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:42,974 INFO L225 Difference]: With dead ends: 299 [2018-07-23 15:26:42,974 INFO L226 Difference]: Without dead ends: 297 [2018-07-23 15:26:42,975 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-23 15:26:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-23 15:26:42,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-23 15:26:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-23 15:26:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-07-23 15:26:42,979 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-07-23 15:26:42,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:42,979 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-07-23 15:26:42,979 INFO L472 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-23 15:26:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-07-23 15:26:42,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-23 15:26:42,980 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:42,980 INFO L353 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-07-23 15:26:42,980 INFO L414 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:42,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1951989413, now seen corresponding path program 146 times [2018-07-23 15:26:42,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:43,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:43,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-23 15:26:43,583 INFO L450 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-23 15:26:43,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-23 15:26:43,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-23 15:26:43,586 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 149 states. [2018-07-23 15:26:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:44,177 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-23 15:26:44,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-23 15:26:44,177 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 296 [2018-07-23 15:26:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:44,178 INFO L225 Difference]: With dead ends: 301 [2018-07-23 15:26:44,178 INFO L226 Difference]: Without dead ends: 299 [2018-07-23 15:26:44,179 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-23 15:26:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-23 15:26:44,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-23 15:26:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-23 15:26:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-07-23 15:26:44,184 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-07-23 15:26:44,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:44,184 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-07-23 15:26:44,185 INFO L472 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-23 15:26:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-07-23 15:26:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-23 15:26:44,186 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:44,186 INFO L353 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-07-23 15:26:44,186 INFO L414 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:44,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1038934549, now seen corresponding path program 147 times [2018-07-23 15:26:44,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:44,916 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:44,916 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-23 15:26:44,916 INFO L450 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-23 15:26:44,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-23 15:26:44,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:26:44,919 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 150 states. [2018-07-23 15:26:45,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:45,518 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-23 15:26:45,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-23 15:26:45,518 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-23 15:26:45,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:45,519 INFO L225 Difference]: With dead ends: 303 [2018-07-23 15:26:45,519 INFO L226 Difference]: Without dead ends: 301 [2018-07-23 15:26:45,520 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-23 15:26:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-23 15:26:45,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-23 15:26:45,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-23 15:26:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-07-23 15:26:45,523 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-07-23 15:26:45,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:45,524 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-07-23 15:26:45,524 INFO L472 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-23 15:26:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-07-23 15:26:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-23 15:26:45,525 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:45,525 INFO L353 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-07-23 15:26:45,525 INFO L414 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:45,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1983741007, now seen corresponding path program 148 times [2018-07-23 15:26:45,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:46,333 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:46,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-23 15:26:46,333 INFO L450 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-23 15:26:46,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-23 15:26:46,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-23 15:26:46,337 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 151 states. [2018-07-23 15:26:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:46,565 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-23 15:26:46,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-23 15:26:46,565 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 300 [2018-07-23 15:26:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:46,566 INFO L225 Difference]: With dead ends: 305 [2018-07-23 15:26:46,566 INFO L226 Difference]: Without dead ends: 303 [2018-07-23 15:26:46,567 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-23 15:26:46,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-23 15:26:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-23 15:26:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-23 15:26:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-07-23 15:26:46,571 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-07-23 15:26:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:46,571 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-07-23 15:26:46,571 INFO L472 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-23 15:26:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-07-23 15:26:46,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-23 15:26:46,572 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:46,572 INFO L353 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-07-23 15:26:46,572 INFO L414 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:46,573 INFO L82 PathProgramCache]: Analyzing trace with hash -590319607, now seen corresponding path program 149 times [2018-07-23 15:26:46,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:47,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:47,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-23 15:26:47,241 INFO L450 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-23 15:26:47,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-23 15:26:47,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-23 15:26:47,243 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 152 states. [2018-07-23 15:26:47,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:47,922 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-23 15:26:47,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-23 15:26:47,923 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-23 15:26:47,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:47,923 INFO L225 Difference]: With dead ends: 307 [2018-07-23 15:26:47,924 INFO L226 Difference]: Without dead ends: 305 [2018-07-23 15:26:47,925 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-23 15:26:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-23 15:26:47,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-23 15:26:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-23 15:26:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-07-23 15:26:47,930 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-07-23 15:26:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:47,930 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-07-23 15:26:47,930 INFO L472 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-23 15:26:47,930 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-07-23 15:26:47,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-23 15:26:47,931 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:47,931 INFO L353 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-07-23 15:26:47,931 INFO L414 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:47,931 INFO L82 PathProgramCache]: Analyzing trace with hash -361407165, now seen corresponding path program 150 times [2018-07-23 15:26:47,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:48,571 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:48,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-23 15:26:48,572 INFO L450 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-23 15:26:48,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-23 15:26:48,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-23 15:26:48,574 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 153 states. [2018-07-23 15:26:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:49,178 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-23 15:26:49,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-23 15:26:49,179 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 304 [2018-07-23 15:26:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:49,179 INFO L225 Difference]: With dead ends: 309 [2018-07-23 15:26:49,179 INFO L226 Difference]: Without dead ends: 307 [2018-07-23 15:26:49,180 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-23 15:26:49,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-23 15:26:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-23 15:26:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-23 15:26:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-07-23 15:26:49,183 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-07-23 15:26:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:49,184 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-07-23 15:26:49,184 INFO L472 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-23 15:26:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-07-23 15:26:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-23 15:26:49,184 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:49,185 INFO L353 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-07-23 15:26:49,185 INFO L414 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:49,185 INFO L82 PathProgramCache]: Analyzing trace with hash 580117501, now seen corresponding path program 151 times [2018-07-23 15:26:49,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:49,860 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:49,860 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-23 15:26:49,861 INFO L450 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-23 15:26:49,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-23 15:26:49,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:26:49,862 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 154 states. [2018-07-23 15:26:50,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:50,278 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-23 15:26:50,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-23 15:26:50,279 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-23 15:26:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:50,280 INFO L225 Difference]: With dead ends: 311 [2018-07-23 15:26:50,280 INFO L226 Difference]: Without dead ends: 309 [2018-07-23 15:26:50,281 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-23 15:26:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-23 15:26:50,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-23 15:26:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-23 15:26:50,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-07-23 15:26:50,286 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-07-23 15:26:50,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:50,286 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-07-23 15:26:50,286 INFO L472 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-23 15:26:50,286 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-07-23 15:26:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-23 15:26:50,287 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:50,288 INFO L353 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-07-23 15:26:50,288 INFO L414 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:50,288 INFO L82 PathProgramCache]: Analyzing trace with hash -852777929, now seen corresponding path program 152 times [2018-07-23 15:26:50,288 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:51,162 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:51,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-23 15:26:51,163 INFO L450 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-23 15:26:51,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-23 15:26:51,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-23 15:26:51,166 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 155 states. [2018-07-23 15:26:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:51,841 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-23 15:26:51,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-23 15:26:51,842 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 308 [2018-07-23 15:26:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:51,843 INFO L225 Difference]: With dead ends: 313 [2018-07-23 15:26:51,843 INFO L226 Difference]: Without dead ends: 311 [2018-07-23 15:26:51,845 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-23 15:26:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-23 15:26:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-23 15:26:51,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-23 15:26:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-07-23 15:26:51,850 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-07-23 15:26:51,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:51,850 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-07-23 15:26:51,850 INFO L472 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-23 15:26:51,850 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-07-23 15:26:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-23 15:26:51,851 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:51,852 INFO L353 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-07-23 15:26:51,852 INFO L414 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:51,852 INFO L82 PathProgramCache]: Analyzing trace with hash 819215857, now seen corresponding path program 153 times [2018-07-23 15:26:51,852 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:52,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:52,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-23 15:26:52,594 INFO L450 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-23 15:26:52,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-23 15:26:52,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:26:52,597 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 156 states. [2018-07-23 15:26:52,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:52,923 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-23 15:26:52,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-23 15:26:52,923 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-23 15:26:52,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:52,924 INFO L225 Difference]: With dead ends: 315 [2018-07-23 15:26:52,924 INFO L226 Difference]: Without dead ends: 313 [2018-07-23 15:26:52,925 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-23 15:26:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-23 15:26:52,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-23 15:26:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-23 15:26:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-07-23 15:26:52,928 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-07-23 15:26:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:52,928 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-07-23 15:26:52,928 INFO L472 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-23 15:26:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-07-23 15:26:52,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-23 15:26:52,929 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:52,929 INFO L353 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-07-23 15:26:52,929 INFO L414 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:52,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1287475499, now seen corresponding path program 154 times [2018-07-23 15:26:52,930 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:53,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:53,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-23 15:26:53,627 INFO L450 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-23 15:26:53,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-23 15:26:53,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-23 15:26:53,631 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 157 states. [2018-07-23 15:26:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:54,315 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-23 15:26:54,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-23 15:26:54,315 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 312 [2018-07-23 15:26:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:54,316 INFO L225 Difference]: With dead ends: 317 [2018-07-23 15:26:54,316 INFO L226 Difference]: Without dead ends: 315 [2018-07-23 15:26:54,317 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-23 15:26:54,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-23 15:26:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-23 15:26:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-23 15:26:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-07-23 15:26:54,355 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-07-23 15:26:54,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:54,355 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-07-23 15:26:54,355 INFO L472 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-23 15:26:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-07-23 15:26:54,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-23 15:26:54,357 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:54,357 INFO L353 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-07-23 15:26:54,357 INFO L414 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:54,357 INFO L82 PathProgramCache]: Analyzing trace with hash 313425381, now seen corresponding path program 155 times [2018-07-23 15:26:54,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:55,325 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:55,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-23 15:26:55,326 INFO L450 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-23 15:26:55,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-23 15:26:55,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-23 15:26:55,328 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 158 states. [2018-07-23 15:26:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:55,808 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-23 15:26:55,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-23 15:26:55,808 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-23 15:26:55,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:55,809 INFO L225 Difference]: With dead ends: 319 [2018-07-23 15:26:55,809 INFO L226 Difference]: Without dead ends: 317 [2018-07-23 15:26:55,810 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-23 15:26:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-23 15:26:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-23 15:26:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-23 15:26:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-07-23 15:26:55,814 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-07-23 15:26:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:55,814 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-07-23 15:26:55,814 INFO L472 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-23 15:26:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-07-23 15:26:55,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-23 15:26:55,815 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:55,815 INFO L353 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-07-23 15:26:55,815 INFO L414 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:55,815 INFO L82 PathProgramCache]: Analyzing trace with hash 554132511, now seen corresponding path program 156 times [2018-07-23 15:26:55,815 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:56,539 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:56,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-23 15:26:56,539 INFO L450 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-23 15:26:56,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-23 15:26:56,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-23 15:26:56,542 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 159 states. [2018-07-23 15:26:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:57,201 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-23 15:26:57,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-23 15:26:57,201 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 316 [2018-07-23 15:26:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:57,201 INFO L225 Difference]: With dead ends: 321 [2018-07-23 15:26:57,201 INFO L226 Difference]: Without dead ends: 319 [2018-07-23 15:26:57,203 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-23 15:26:57,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-23 15:26:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-23 15:26:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-23 15:26:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-07-23 15:26:57,206 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-07-23 15:26:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:57,206 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-07-23 15:26:57,206 INFO L472 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-23 15:26:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-07-23 15:26:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-23 15:26:57,207 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:57,207 INFO L353 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-07-23 15:26:57,207 INFO L414 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:57,207 INFO L82 PathProgramCache]: Analyzing trace with hash -54549543, now seen corresponding path program 157 times [2018-07-23 15:26:57,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:57,935 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:57,935 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-23 15:26:57,935 INFO L450 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-23 15:26:57,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-23 15:26:57,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:26:57,938 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 160 states. [2018-07-23 15:26:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:58,777 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-23 15:26:58,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-23 15:26:58,778 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-23 15:26:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:58,778 INFO L225 Difference]: With dead ends: 323 [2018-07-23 15:26:58,778 INFO L226 Difference]: Without dead ends: 321 [2018-07-23 15:26:58,779 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-23 15:26:58,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-23 15:26:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-23 15:26:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-23 15:26:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-07-23 15:26:58,783 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-07-23 15:26:58,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:58,783 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-07-23 15:26:58,783 INFO L472 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-23 15:26:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-07-23 15:26:58,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-23 15:26:58,784 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:58,784 INFO L353 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-07-23 15:26:58,784 INFO L414 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:58,784 INFO L82 PathProgramCache]: Analyzing trace with hash -882451181, now seen corresponding path program 158 times [2018-07-23 15:26:58,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:26:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:26:59,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:26:59,515 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-23 15:26:59,515 INFO L450 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-23 15:26:59,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-23 15:26:59,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-23 15:26:59,518 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 161 states. [2018-07-23 15:26:59,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:26:59,786 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-23 15:26:59,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-23 15:26:59,786 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 320 [2018-07-23 15:26:59,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:26:59,787 INFO L225 Difference]: With dead ends: 325 [2018-07-23 15:26:59,787 INFO L226 Difference]: Without dead ends: 323 [2018-07-23 15:26:59,788 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-23 15:26:59,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-23 15:26:59,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-23 15:26:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-23 15:26:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-07-23 15:26:59,792 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-07-23 15:26:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:26:59,792 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-07-23 15:26:59,792 INFO L472 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-23 15:26:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-07-23 15:26:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-23 15:26:59,793 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:26:59,793 INFO L353 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-07-23 15:26:59,793 INFO L414 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:26:59,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1926975539, now seen corresponding path program 159 times [2018-07-23 15:26:59,793 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:26:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:00,518 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:00,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-23 15:27:00,519 INFO L450 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-23 15:27:00,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-23 15:27:00,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-23 15:27:00,522 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 162 states. [2018-07-23 15:27:01,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:01,272 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-23 15:27:01,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-23 15:27:01,272 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-23 15:27:01,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:01,273 INFO L225 Difference]: With dead ends: 327 [2018-07-23 15:27:01,273 INFO L226 Difference]: Without dead ends: 325 [2018-07-23 15:27:01,274 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-23 15:27:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-23 15:27:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-23 15:27:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-23 15:27:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-07-23 15:27:01,278 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-07-23 15:27:01,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:01,278 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-07-23 15:27:01,278 INFO L472 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-23 15:27:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-07-23 15:27:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-23 15:27:01,279 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:01,279 INFO L353 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-07-23 15:27:01,279 INFO L414 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:01,279 INFO L82 PathProgramCache]: Analyzing trace with hash -692536313, now seen corresponding path program 160 times [2018-07-23 15:27:01,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:02,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:02,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-23 15:27:02,082 INFO L450 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-23 15:27:02,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-23 15:27:02,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-23 15:27:02,085 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 163 states. [2018-07-23 15:27:02,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:02,976 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-23 15:27:02,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-23 15:27:02,977 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 324 [2018-07-23 15:27:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:02,977 INFO L225 Difference]: With dead ends: 329 [2018-07-23 15:27:02,977 INFO L226 Difference]: Without dead ends: 327 [2018-07-23 15:27:02,979 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-23 15:27:02,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-23 15:27:02,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-23 15:27:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-23 15:27:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-07-23 15:27:02,983 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-07-23 15:27:02,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:02,983 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-07-23 15:27:02,983 INFO L472 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-23 15:27:02,983 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-07-23 15:27:02,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-23 15:27:02,984 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:02,984 INFO L353 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-07-23 15:27:02,984 INFO L414 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:02,985 INFO L82 PathProgramCache]: Analyzing trace with hash 192586177, now seen corresponding path program 161 times [2018-07-23 15:27:02,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:03,824 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:03,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-23 15:27:03,825 INFO L450 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-23 15:27:03,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-23 15:27:03,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-23 15:27:03,827 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 164 states. [2018-07-23 15:27:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:04,491 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-23 15:27:04,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-23 15:27:04,491 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-23 15:27:04,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:04,491 INFO L225 Difference]: With dead ends: 331 [2018-07-23 15:27:04,491 INFO L226 Difference]: Without dead ends: 329 [2018-07-23 15:27:04,493 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-23 15:27:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-23 15:27:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-23 15:27:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-23 15:27:04,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-07-23 15:27:04,497 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-07-23 15:27:04,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:04,497 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-07-23 15:27:04,497 INFO L472 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-23 15:27:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-07-23 15:27:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-23 15:27:04,498 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:04,498 INFO L353 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-07-23 15:27:04,498 INFO L414 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:04,498 INFO L82 PathProgramCache]: Analyzing trace with hash 391774459, now seen corresponding path program 162 times [2018-07-23 15:27:04,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:05,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:05,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-23 15:27:05,272 INFO L450 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-23 15:27:05,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-23 15:27:05,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-23 15:27:05,274 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 165 states. [2018-07-23 15:27:05,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:05,547 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-23 15:27:05,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-23 15:27:05,547 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 328 [2018-07-23 15:27:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:05,548 INFO L225 Difference]: With dead ends: 333 [2018-07-23 15:27:05,548 INFO L226 Difference]: Without dead ends: 331 [2018-07-23 15:27:05,549 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-23 15:27:05,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-23 15:27:05,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-23 15:27:05,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-23 15:27:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-07-23 15:27:05,553 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-07-23 15:27:05,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:05,553 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-07-23 15:27:05,553 INFO L472 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-23 15:27:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-07-23 15:27:05,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-23 15:27:05,554 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:05,554 INFO L353 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-07-23 15:27:05,554 INFO L414 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1461814859, now seen corresponding path program 163 times [2018-07-23 15:27:05,554 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:06,355 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:06,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-23 15:27:06,355 INFO L450 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-23 15:27:06,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-23 15:27:06,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:27:06,358 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 166 states. [2018-07-23 15:27:06,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:06,840 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-23 15:27:06,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-23 15:27:06,840 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-23 15:27:06,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:06,841 INFO L225 Difference]: With dead ends: 335 [2018-07-23 15:27:06,841 INFO L226 Difference]: Without dead ends: 333 [2018-07-23 15:27:06,842 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-23 15:27:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-23 15:27:06,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-23 15:27:06,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-23 15:27:06,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-07-23 15:27:06,848 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-07-23 15:27:06,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:06,848 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-07-23 15:27:06,849 INFO L472 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-23 15:27:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-07-23 15:27:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-23 15:27:06,850 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:06,850 INFO L353 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-07-23 15:27:06,850 INFO L414 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:06,851 INFO L82 PathProgramCache]: Analyzing trace with hash -349721617, now seen corresponding path program 164 times [2018-07-23 15:27:06,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:07,776 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:07,777 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-23 15:27:07,777 INFO L450 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-23 15:27:07,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-23 15:27:07,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-23 15:27:07,780 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 167 states. [2018-07-23 15:27:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:08,621 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-23 15:27:08,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-23 15:27:08,621 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 332 [2018-07-23 15:27:08,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:08,622 INFO L225 Difference]: With dead ends: 337 [2018-07-23 15:27:08,622 INFO L226 Difference]: Without dead ends: 335 [2018-07-23 15:27:08,624 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-23 15:27:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-23 15:27:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-23 15:27:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-23 15:27:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-07-23 15:27:08,627 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-07-23 15:27:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:08,627 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-07-23 15:27:08,627 INFO L472 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-23 15:27:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-07-23 15:27:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-23 15:27:08,628 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:08,628 INFO L353 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-07-23 15:27:08,628 INFO L414 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:08,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1074972759, now seen corresponding path program 165 times [2018-07-23 15:27:08,629 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:09,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:09,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-23 15:27:09,432 INFO L450 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-23 15:27:09,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-23 15:27:09,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:27:09,435 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 168 states. [2018-07-23 15:27:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:10,333 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-23 15:27:10,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-23 15:27:10,334 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-23 15:27:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:10,334 INFO L225 Difference]: With dead ends: 339 [2018-07-23 15:27:10,334 INFO L226 Difference]: Without dead ends: 337 [2018-07-23 15:27:10,336 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-23 15:27:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-23 15:27:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-23 15:27:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-23 15:27:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-07-23 15:27:10,339 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-07-23 15:27:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:10,340 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-07-23 15:27:10,340 INFO L472 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-23 15:27:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-07-23 15:27:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-23 15:27:10,341 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:10,341 INFO L353 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-07-23 15:27:10,341 INFO L414 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:10,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2038349027, now seen corresponding path program 166 times [2018-07-23 15:27:10,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:11,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:11,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-23 15:27:11,258 INFO L450 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-23 15:27:11,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-23 15:27:11,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:27:11,260 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 169 states. [2018-07-23 15:27:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:12,158 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-23 15:27:12,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-23 15:27:12,158 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 336 [2018-07-23 15:27:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:12,159 INFO L225 Difference]: With dead ends: 341 [2018-07-23 15:27:12,159 INFO L226 Difference]: Without dead ends: 339 [2018-07-23 15:27:12,160 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-23 15:27:12,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-23 15:27:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-23 15:27:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-23 15:27:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-07-23 15:27:12,163 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-07-23 15:27:12,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:12,163 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-07-23 15:27:12,163 INFO L472 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-23 15:27:12,163 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-07-23 15:27:12,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-23 15:27:12,164 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:12,164 INFO L353 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-07-23 15:27:12,164 INFO L414 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:12,165 INFO L82 PathProgramCache]: Analyzing trace with hash 348380061, now seen corresponding path program 167 times [2018-07-23 15:27:12,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:12,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:12,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-23 15:27:12,995 INFO L450 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-23 15:27:12,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-23 15:27:12,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-23 15:27:12,998 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 170 states. [2018-07-23 15:27:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:14,014 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-23 15:27:14,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-23 15:27:14,015 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-23 15:27:14,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:14,015 INFO L225 Difference]: With dead ends: 343 [2018-07-23 15:27:14,015 INFO L226 Difference]: Without dead ends: 341 [2018-07-23 15:27:14,017 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-23 15:27:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-23 15:27:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-23 15:27:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-23 15:27:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-07-23 15:27:14,020 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-07-23 15:27:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:14,021 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-07-23 15:27:14,021 INFO L472 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-23 15:27:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-07-23 15:27:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-23 15:27:14,022 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:14,022 INFO L353 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-07-23 15:27:14,022 INFO L414 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:14,022 INFO L82 PathProgramCache]: Analyzing trace with hash -214158377, now seen corresponding path program 168 times [2018-07-23 15:27:14,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:14,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:14,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-23 15:27:14,898 INFO L450 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-23 15:27:14,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-23 15:27:14,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-23 15:27:14,902 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 171 states. [2018-07-23 15:27:15,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:15,924 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-23 15:27:15,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-23 15:27:15,924 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 340 [2018-07-23 15:27:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:15,925 INFO L225 Difference]: With dead ends: 345 [2018-07-23 15:27:15,925 INFO L226 Difference]: Without dead ends: 343 [2018-07-23 15:27:15,926 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-23 15:27:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-23 15:27:15,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-23 15:27:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-23 15:27:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-07-23 15:27:15,930 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-07-23 15:27:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:15,930 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-07-23 15:27:15,930 INFO L472 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-23 15:27:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-07-23 15:27:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-23 15:27:15,931 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:15,931 INFO L353 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-07-23 15:27:15,931 INFO L414 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:15,931 INFO L82 PathProgramCache]: Analyzing trace with hash 352282001, now seen corresponding path program 169 times [2018-07-23 15:27:15,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:16,808 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:16,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-23 15:27:16,809 INFO L450 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-23 15:27:16,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-23 15:27:16,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:27:16,811 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 172 states. [2018-07-23 15:27:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:17,813 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-23 15:27:17,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-23 15:27:17,813 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-23 15:27:17,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:17,814 INFO L225 Difference]: With dead ends: 347 [2018-07-23 15:27:17,814 INFO L226 Difference]: Without dead ends: 345 [2018-07-23 15:27:17,815 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-23 15:27:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-23 15:27:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-23 15:27:17,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-23 15:27:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-07-23 15:27:17,818 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-07-23 15:27:17,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:17,819 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-07-23 15:27:17,819 INFO L472 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-23 15:27:17,819 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-07-23 15:27:17,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-23 15:27:17,820 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:17,820 INFO L353 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-07-23 15:27:17,820 INFO L414 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:17,820 INFO L82 PathProgramCache]: Analyzing trace with hash -759361333, now seen corresponding path program 170 times [2018-07-23 15:27:17,820 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:18,736 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:18,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-23 15:27:18,737 INFO L450 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-23 15:27:18,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-23 15:27:18,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:27:18,742 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 173 states. [2018-07-23 15:27:19,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:19,770 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-23 15:27:19,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-23 15:27:19,770 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 344 [2018-07-23 15:27:19,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:19,771 INFO L225 Difference]: With dead ends: 349 [2018-07-23 15:27:19,771 INFO L226 Difference]: Without dead ends: 347 [2018-07-23 15:27:19,773 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-23 15:27:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-23 15:27:19,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-23 15:27:19,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-23 15:27:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-07-23 15:27:19,778 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-07-23 15:27:19,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:19,778 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-07-23 15:27:19,779 INFO L472 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-23 15:27:19,779 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-07-23 15:27:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-23 15:27:19,780 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:19,780 INFO L353 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-07-23 15:27:19,780 INFO L414 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:19,781 INFO L82 PathProgramCache]: Analyzing trace with hash 398251397, now seen corresponding path program 171 times [2018-07-23 15:27:19,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:20,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:20,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-23 15:27:20,719 INFO L450 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-23 15:27:20,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-23 15:27:20,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:27:20,723 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 174 states. [2018-07-23 15:27:21,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:21,416 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-07-23 15:27:21,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-23 15:27:21,416 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-23 15:27:21,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:21,417 INFO L225 Difference]: With dead ends: 351 [2018-07-23 15:27:21,417 INFO L226 Difference]: Without dead ends: 349 [2018-07-23 15:27:21,418 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-23 15:27:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-23 15:27:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-23 15:27:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-23 15:27:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-07-23 15:27:21,423 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 346 [2018-07-23 15:27:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:21,424 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-07-23 15:27:21,424 INFO L472 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-23 15:27:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-07-23 15:27:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-23 15:27:21,425 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:21,425 INFO L353 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1] [2018-07-23 15:27:21,425 INFO L414 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:21,426 INFO L82 PathProgramCache]: Analyzing trace with hash 467555263, now seen corresponding path program 172 times [2018-07-23 15:27:21,426 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:22,361 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:22,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-23 15:27:22,362 INFO L450 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-23 15:27:22,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-23 15:27:22,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-23 15:27:22,365 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 175 states. [2018-07-23 15:27:22,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:22,702 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-07-23 15:27:22,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-23 15:27:22,702 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 348 [2018-07-23 15:27:22,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:22,703 INFO L225 Difference]: With dead ends: 353 [2018-07-23 15:27:22,703 INFO L226 Difference]: Without dead ends: 351 [2018-07-23 15:27:22,704 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-23 15:27:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-23 15:27:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-07-23 15:27:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-23 15:27:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-07-23 15:27:22,707 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 348 [2018-07-23 15:27:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:22,708 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-07-23 15:27:22,708 INFO L472 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-23 15:27:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-07-23 15:27:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-23 15:27:22,709 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:22,709 INFO L353 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1] [2018-07-23 15:27:22,709 INFO L414 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:22,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1650906247, now seen corresponding path program 173 times [2018-07-23 15:27:22,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:23,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:23,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-23 15:27:23,627 INFO L450 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-23 15:27:23,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-23 15:27:23,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-23 15:27:23,631 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 176 states. [2018-07-23 15:27:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:24,196 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-07-23 15:27:24,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-23 15:27:24,197 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-23 15:27:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:24,197 INFO L225 Difference]: With dead ends: 355 [2018-07-23 15:27:24,197 INFO L226 Difference]: Without dead ends: 353 [2018-07-23 15:27:24,199 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-23 15:27:24,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-23 15:27:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-23 15:27:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-23 15:27:24,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-07-23 15:27:24,202 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 350 [2018-07-23 15:27:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:24,202 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-07-23 15:27:24,202 INFO L472 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-23 15:27:24,203 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-07-23 15:27:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-23 15:27:24,203 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:24,204 INFO L353 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1] [2018-07-23 15:27:24,204 INFO L414 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:24,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1677919053, now seen corresponding path program 174 times [2018-07-23 15:27:24,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:25,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:25,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-23 15:27:25,159 INFO L450 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-23 15:27:25,161 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-23 15:27:25,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:27:25,161 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 177 states. [2018-07-23 15:27:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:26,330 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-07-23 15:27:26,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-23 15:27:26,330 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 352 [2018-07-23 15:27:26,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:26,331 INFO L225 Difference]: With dead ends: 357 [2018-07-23 15:27:26,331 INFO L226 Difference]: Without dead ends: 355 [2018-07-23 15:27:26,333 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-23 15:27:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-23 15:27:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-23 15:27:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-23 15:27:26,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-07-23 15:27:26,336 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 352 [2018-07-23 15:27:26,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:26,337 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-07-23 15:27:26,337 INFO L472 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-23 15:27:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-07-23 15:27:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-23 15:27:26,338 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:26,338 INFO L353 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1] [2018-07-23 15:27:26,338 INFO L414 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:26,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1867421843, now seen corresponding path program 175 times [2018-07-23 15:27:26,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:27,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:27,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-23 15:27:27,275 INFO L450 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-23 15:27:27,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-23 15:27:27,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:27:27,279 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 178 states. [2018-07-23 15:27:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:28,457 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-07-23 15:27:28,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-23 15:27:28,458 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-23 15:27:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:28,459 INFO L225 Difference]: With dead ends: 359 [2018-07-23 15:27:28,459 INFO L226 Difference]: Without dead ends: 357 [2018-07-23 15:27:28,461 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-23 15:27:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-23 15:27:28,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-23 15:27:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-23 15:27:28,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2018-07-23 15:27:28,466 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 354 [2018-07-23 15:27:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:28,467 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2018-07-23 15:27:28,467 INFO L472 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-23 15:27:28,467 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2018-07-23 15:27:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-23 15:27:28,468 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:28,468 INFO L353 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1] [2018-07-23 15:27:28,469 INFO L414 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:28,469 INFO L82 PathProgramCache]: Analyzing trace with hash 703990695, now seen corresponding path program 176 times [2018-07-23 15:27:28,469 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:29,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:29,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-23 15:27:29,444 INFO L450 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-23 15:27:29,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-23 15:27:29,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-23 15:27:29,447 INFO L87 Difference]: Start difference. First operand 357 states and 357 transitions. Second operand 179 states. [2018-07-23 15:27:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:29,891 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-07-23 15:27:29,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-23 15:27:29,892 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 356 [2018-07-23 15:27:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:29,892 INFO L225 Difference]: With dead ends: 361 [2018-07-23 15:27:29,892 INFO L226 Difference]: Without dead ends: 359 [2018-07-23 15:27:29,894 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-23 15:27:29,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-23 15:27:29,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-07-23 15:27:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-23 15:27:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-07-23 15:27:29,897 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 356 [2018-07-23 15:27:29,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:29,897 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-07-23 15:27:29,897 INFO L472 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-23 15:27:29,897 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-07-23 15:27:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-23 15:27:29,898 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:29,898 INFO L353 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1] [2018-07-23 15:27:29,899 INFO L414 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2069722783, now seen corresponding path program 177 times [2018-07-23 15:27:29,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:30,912 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:30,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-23 15:27:30,912 INFO L450 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-23 15:27:30,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-23 15:27:30,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:27:30,916 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 180 states. [2018-07-23 15:27:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:31,827 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-07-23 15:27:31,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-23 15:27:31,827 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-23 15:27:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:31,827 INFO L225 Difference]: With dead ends: 363 [2018-07-23 15:27:31,828 INFO L226 Difference]: Without dead ends: 361 [2018-07-23 15:27:31,829 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-23 15:27:31,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-23 15:27:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-23 15:27:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-23 15:27:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-07-23 15:27:31,833 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 358 [2018-07-23 15:27:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:31,833 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-07-23 15:27:31,833 INFO L472 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-23 15:27:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-07-23 15:27:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-23 15:27:31,834 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:31,834 INFO L353 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1] [2018-07-23 15:27:31,834 INFO L414 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:31,834 INFO L82 PathProgramCache]: Analyzing trace with hash -433684325, now seen corresponding path program 178 times [2018-07-23 15:27:31,835 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:32,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:32,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-23 15:27:32,849 INFO L450 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-23 15:27:32,851 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-23 15:27:32,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-23 15:27:32,853 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 181 states. [2018-07-23 15:27:34,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:34,495 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-07-23 15:27:34,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-23 15:27:34,496 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 360 [2018-07-23 15:27:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:34,496 INFO L225 Difference]: With dead ends: 365 [2018-07-23 15:27:34,496 INFO L226 Difference]: Without dead ends: 363 [2018-07-23 15:27:34,498 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-23 15:27:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-23 15:27:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-23 15:27:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-23 15:27:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-07-23 15:27:34,502 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 360 [2018-07-23 15:27:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:34,502 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-07-23 15:27:34,502 INFO L472 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-23 15:27:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-07-23 15:27:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-23 15:27:34,504 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:34,504 INFO L353 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1] [2018-07-23 15:27:34,504 INFO L414 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:34,504 INFO L82 PathProgramCache]: Analyzing trace with hash -158756523, now seen corresponding path program 179 times [2018-07-23 15:27:34,505 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:35,544 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:35,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-23 15:27:35,544 INFO L450 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-23 15:27:35,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-23 15:27:35,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-23 15:27:35,547 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 182 states. [2018-07-23 15:27:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:35,902 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-07-23 15:27:35,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-23 15:27:35,902 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-23 15:27:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:35,903 INFO L225 Difference]: With dead ends: 367 [2018-07-23 15:27:35,903 INFO L226 Difference]: Without dead ends: 365 [2018-07-23 15:27:35,904 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-23 15:27:35,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-23 15:27:35,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-23 15:27:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-23 15:27:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-07-23 15:27:35,908 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 362 [2018-07-23 15:27:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:35,908 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-07-23 15:27:35,908 INFO L472 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-23 15:27:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-07-23 15:27:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-23 15:27:35,909 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:35,909 INFO L353 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1] [2018-07-23 15:27:35,909 INFO L414 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:35,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2053856143, now seen corresponding path program 180 times [2018-07-23 15:27:35,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:36,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:36,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-23 15:27:36,907 INFO L450 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-23 15:27:36,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-23 15:27:36,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-23 15:27:36,910 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 183 states. [2018-07-23 15:27:38,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:38,378 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-07-23 15:27:38,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-23 15:27:38,378 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 364 [2018-07-23 15:27:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:38,378 INFO L225 Difference]: With dead ends: 369 [2018-07-23 15:27:38,378 INFO L226 Difference]: Without dead ends: 367 [2018-07-23 15:27:38,380 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-23 15:27:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-23 15:27:38,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-23 15:27:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-23 15:27:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-07-23 15:27:38,384 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 364 [2018-07-23 15:27:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:38,384 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-07-23 15:27:38,384 INFO L472 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-23 15:27:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-07-23 15:27:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-23 15:27:38,385 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:38,385 INFO L353 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1] [2018-07-23 15:27:38,385 INFO L414 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1929150647, now seen corresponding path program 181 times [2018-07-23 15:27:38,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:39,486 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:39,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-23 15:27:39,487 INFO L450 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-23 15:27:39,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-23 15:27:39,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:27:39,489 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 184 states. [2018-07-23 15:27:39,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:39,978 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-07-23 15:27:39,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-23 15:27:39,979 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-23 15:27:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:39,979 INFO L225 Difference]: With dead ends: 371 [2018-07-23 15:27:39,979 INFO L226 Difference]: Without dead ends: 369 [2018-07-23 15:27:39,980 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-23 15:27:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-23 15:27:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-23 15:27:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-23 15:27:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2018-07-23 15:27:39,984 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 366 [2018-07-23 15:27:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:39,984 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2018-07-23 15:27:39,984 INFO L472 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-23 15:27:39,984 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2018-07-23 15:27:39,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-23 15:27:39,985 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:39,985 INFO L353 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1] [2018-07-23 15:27:39,985 INFO L414 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:39,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1512152195, now seen corresponding path program 182 times [2018-07-23 15:27:39,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:41,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:41,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-23 15:27:41,010 INFO L450 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-23 15:27:41,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-23 15:27:41,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:27:41,013 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 185 states. [2018-07-23 15:27:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:42,522 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-07-23 15:27:42,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-23 15:27:42,523 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 368 [2018-07-23 15:27:42,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:42,523 INFO L225 Difference]: With dead ends: 373 [2018-07-23 15:27:42,523 INFO L226 Difference]: Without dead ends: 371 [2018-07-23 15:27:42,525 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-23 15:27:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-23 15:27:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-23 15:27:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-23 15:27:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-07-23 15:27:42,528 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 368 [2018-07-23 15:27:42,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:42,529 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-07-23 15:27:42,529 INFO L472 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-23 15:27:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-07-23 15:27:42,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-23 15:27:42,530 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:42,530 INFO L353 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1] [2018-07-23 15:27:42,530 INFO L414 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:42,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1479365437, now seen corresponding path program 183 times [2018-07-23 15:27:42,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:43,681 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:43,681 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-23 15:27:43,681 INFO L450 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-23 15:27:43,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-23 15:27:43,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:27:43,683 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 186 states. [2018-07-23 15:27:44,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:44,111 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-07-23 15:27:44,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-23 15:27:44,111 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-23 15:27:44,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:44,112 INFO L225 Difference]: With dead ends: 375 [2018-07-23 15:27:44,112 INFO L226 Difference]: Without dead ends: 373 [2018-07-23 15:27:44,113 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-23 15:27:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-23 15:27:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-23 15:27:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-23 15:27:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-07-23 15:27:44,116 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 370 [2018-07-23 15:27:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:44,116 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-07-23 15:27:44,116 INFO L472 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-23 15:27:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-07-23 15:27:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-23 15:27:44,118 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:44,118 INFO L353 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1] [2018-07-23 15:27:44,118 INFO L414 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:44,118 INFO L82 PathProgramCache]: Analyzing trace with hash 36062071, now seen corresponding path program 184 times [2018-07-23 15:27:44,118 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:45,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:45,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-23 15:27:45,174 INFO L450 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-23 15:27:45,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-23 15:27:45,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-23 15:27:45,178 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 187 states. [2018-07-23 15:27:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:46,760 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-07-23 15:27:46,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-23 15:27:46,761 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 372 [2018-07-23 15:27:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:46,761 INFO L225 Difference]: With dead ends: 377 [2018-07-23 15:27:46,761 INFO L226 Difference]: Without dead ends: 375 [2018-07-23 15:27:46,763 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-23 15:27:46,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-23 15:27:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-07-23 15:27:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-23 15:27:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-07-23 15:27:46,766 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 372 [2018-07-23 15:27:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:46,767 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-07-23 15:27:46,767 INFO L472 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-23 15:27:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-07-23 15:27:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-23 15:27:46,768 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:46,768 INFO L353 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1] [2018-07-23 15:27:46,768 INFO L414 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash 295963953, now seen corresponding path program 185 times [2018-07-23 15:27:46,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:47,859 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:47,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-23 15:27:47,859 INFO L450 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-23 15:27:47,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-23 15:27:47,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-23 15:27:47,864 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 188 states. [2018-07-23 15:27:48,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:48,485 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-07-23 15:27:48,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-23 15:27:48,486 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-23 15:27:48,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:48,486 INFO L225 Difference]: With dead ends: 379 [2018-07-23 15:27:48,486 INFO L226 Difference]: Without dead ends: 377 [2018-07-23 15:27:48,488 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-23 15:27:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-23 15:27:48,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-23 15:27:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-23 15:27:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-07-23 15:27:48,492 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 374 [2018-07-23 15:27:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:48,492 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-07-23 15:27:48,492 INFO L472 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-23 15:27:48,492 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-07-23 15:27:48,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-23 15:27:48,493 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:48,493 INFO L353 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1] [2018-07-23 15:27:48,493 INFO L414 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:48,493 INFO L82 PathProgramCache]: Analyzing trace with hash 953569387, now seen corresponding path program 186 times [2018-07-23 15:27:48,493 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:49,556 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:49,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-23 15:27:49,556 INFO L450 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-23 15:27:49,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-23 15:27:49,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-23 15:27:49,560 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 189 states. [2018-07-23 15:27:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:50,629 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-07-23 15:27:50,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-23 15:27:50,629 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 376 [2018-07-23 15:27:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:50,630 INFO L225 Difference]: With dead ends: 381 [2018-07-23 15:27:50,630 INFO L226 Difference]: Without dead ends: 379 [2018-07-23 15:27:50,632 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-23 15:27:50,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-23 15:27:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-23 15:27:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-23 15:27:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-07-23 15:27:50,635 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 376 [2018-07-23 15:27:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:50,635 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-07-23 15:27:50,635 INFO L472 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-23 15:27:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-07-23 15:27:50,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-23 15:27:50,637 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:50,637 INFO L353 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1] [2018-07-23 15:27:50,637 INFO L414 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:50,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1552198949, now seen corresponding path program 187 times [2018-07-23 15:27:50,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:51,767 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:51,767 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-23 15:27:51,767 INFO L450 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-23 15:27:51,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-23 15:27:51,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:27:51,771 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 190 states. [2018-07-23 15:27:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:53,530 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-07-23 15:27:53,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-23 15:27:53,530 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-23 15:27:53,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:53,531 INFO L225 Difference]: With dead ends: 383 [2018-07-23 15:27:53,531 INFO L226 Difference]: Without dead ends: 381 [2018-07-23 15:27:53,532 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-23 15:27:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-23 15:27:53,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-23 15:27:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-23 15:27:53,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2018-07-23 15:27:53,536 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 378 [2018-07-23 15:27:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:53,537 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2018-07-23 15:27:53,537 INFO L472 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-23 15:27:53,537 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2018-07-23 15:27:53,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-23 15:27:53,538 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:53,538 INFO L353 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1] [2018-07-23 15:27:53,538 INFO L414 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:53,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1309590367, now seen corresponding path program 188 times [2018-07-23 15:27:53,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:54,724 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:54,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-23 15:27:54,724 INFO L450 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-23 15:27:54,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-23 15:27:54,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-23 15:27:54,728 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 191 states. [2018-07-23 15:27:55,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:55,445 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-07-23 15:27:55,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-23 15:27:55,445 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 380 [2018-07-23 15:27:55,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:55,446 INFO L225 Difference]: With dead ends: 385 [2018-07-23 15:27:55,446 INFO L226 Difference]: Without dead ends: 383 [2018-07-23 15:27:55,447 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-23 15:27:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-23 15:27:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-07-23 15:27:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-23 15:27:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-07-23 15:27:55,451 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 380 [2018-07-23 15:27:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:55,451 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-07-23 15:27:55,452 INFO L472 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-23 15:27:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-07-23 15:27:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-23 15:27:55,453 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:55,453 INFO L353 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1] [2018-07-23 15:27:55,453 INFO L414 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:55,453 INFO L82 PathProgramCache]: Analyzing trace with hash 90977049, now seen corresponding path program 189 times [2018-07-23 15:27:55,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:56,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:56,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-23 15:27:56,616 INFO L450 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-23 15:27:56,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-23 15:27:56,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:27:56,619 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 192 states. [2018-07-23 15:27:57,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:27:57,405 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-07-23 15:27:57,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-23 15:27:57,405 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-23 15:27:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:27:57,406 INFO L225 Difference]: With dead ends: 387 [2018-07-23 15:27:57,406 INFO L226 Difference]: Without dead ends: 385 [2018-07-23 15:27:57,408 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-23 15:27:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-23 15:27:57,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-23 15:27:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-23 15:27:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-07-23 15:27:57,413 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 382 [2018-07-23 15:27:57,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:27:57,413 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-07-23 15:27:57,413 INFO L472 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-23 15:27:57,413 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-07-23 15:27:57,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-23 15:27:57,414 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:27:57,414 INFO L353 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1] [2018-07-23 15:27:57,414 INFO L414 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:27:57,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1529650259, now seen corresponding path program 190 times [2018-07-23 15:27:57,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:27:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:27:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:27:58,823 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:27:58,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-23 15:27:58,824 INFO L450 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-23 15:27:58,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-23 15:27:58,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-23 15:27:58,828 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 193 states. [2018-07-23 15:28:00,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:00,725 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-07-23 15:28:00,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-23 15:28:00,725 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 384 [2018-07-23 15:28:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:00,726 INFO L225 Difference]: With dead ends: 389 [2018-07-23 15:28:00,726 INFO L226 Difference]: Without dead ends: 387 [2018-07-23 15:28:00,728 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-23 15:28:00,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-23 15:28:00,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-23 15:28:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-23 15:28:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-07-23 15:28:00,732 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 384 [2018-07-23 15:28:00,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:00,732 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-07-23 15:28:00,732 INFO L472 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-23 15:28:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-07-23 15:28:00,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-23 15:28:00,734 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:00,734 INFO L353 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1] [2018-07-23 15:28:00,734 INFO L414 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:00,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1115135757, now seen corresponding path program 191 times [2018-07-23 15:28:00,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:02,076 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:02,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-23 15:28:02,077 INFO L450 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-23 15:28:02,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-23 15:28:02,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:28:02,083 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 194 states. [2018-07-23 15:28:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:04,010 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-07-23 15:28:04,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-23 15:28:04,010 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-23 15:28:04,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:04,011 INFO L225 Difference]: With dead ends: 391 [2018-07-23 15:28:04,011 INFO L226 Difference]: Without dead ends: 389 [2018-07-23 15:28:04,014 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-23 15:28:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-23 15:28:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-23 15:28:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-23 15:28:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-07-23 15:28:04,019 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 386 [2018-07-23 15:28:04,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:04,019 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-07-23 15:28:04,020 INFO L472 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-23 15:28:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-07-23 15:28:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-23 15:28:04,021 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:04,021 INFO L353 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1] [2018-07-23 15:28:04,022 INFO L414 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:04,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2096309433, now seen corresponding path program 192 times [2018-07-23 15:28:04,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:05,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:05,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-23 15:28:05,296 INFO L450 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-23 15:28:05,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-23 15:28:05,300 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-23 15:28:05,300 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 195 states. [2018-07-23 15:28:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:06,906 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-07-23 15:28:06,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-23 15:28:06,906 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 388 [2018-07-23 15:28:06,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:06,907 INFO L225 Difference]: With dead ends: 393 [2018-07-23 15:28:06,907 INFO L226 Difference]: Without dead ends: 391 [2018-07-23 15:28:06,909 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-23 15:28:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-23 15:28:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-07-23 15:28:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-23 15:28:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-07-23 15:28:06,912 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 388 [2018-07-23 15:28:06,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:06,913 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-07-23 15:28:06,913 INFO L472 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-23 15:28:06,913 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-07-23 15:28:06,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-23 15:28:06,914 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:06,914 INFO L353 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1] [2018-07-23 15:28:06,914 INFO L414 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash -213651199, now seen corresponding path program 193 times [2018-07-23 15:28:06,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:08,185 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:08,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-23 15:28:08,186 INFO L450 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-23 15:28:08,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-23 15:28:08,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:28:08,190 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 196 states. [2018-07-23 15:28:09,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:09,384 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-07-23 15:28:09,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-23 15:28:09,384 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-23 15:28:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:09,385 INFO L225 Difference]: With dead ends: 395 [2018-07-23 15:28:09,385 INFO L226 Difference]: Without dead ends: 393 [2018-07-23 15:28:09,387 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-23 15:28:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-23 15:28:09,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-23 15:28:09,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-23 15:28:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2018-07-23 15:28:09,391 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 390 [2018-07-23 15:28:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:09,391 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2018-07-23 15:28:09,391 INFO L472 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-23 15:28:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2018-07-23 15:28:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-23 15:28:09,392 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:09,392 INFO L353 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1] [2018-07-23 15:28:09,392 INFO L414 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:09,393 INFO L82 PathProgramCache]: Analyzing trace with hash 839680059, now seen corresponding path program 194 times [2018-07-23 15:28:09,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:10,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:10,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-23 15:28:10,682 INFO L450 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-23 15:28:10,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-23 15:28:10,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:28:10,686 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand 197 states. [2018-07-23 15:28:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:11,562 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-07-23 15:28:11,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-23 15:28:11,562 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 392 [2018-07-23 15:28:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:11,562 INFO L225 Difference]: With dead ends: 397 [2018-07-23 15:28:11,562 INFO L226 Difference]: Without dead ends: 395 [2018-07-23 15:28:11,564 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-23 15:28:11,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-23 15:28:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-23 15:28:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-23 15:28:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-07-23 15:28:11,568 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 392 [2018-07-23 15:28:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:11,568 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-07-23 15:28:11,568 INFO L472 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-23 15:28:11,568 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-07-23 15:28:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-23 15:28:11,569 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:11,569 INFO L353 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1] [2018-07-23 15:28:11,570 INFO L414 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:11,570 INFO L82 PathProgramCache]: Analyzing trace with hash -521262859, now seen corresponding path program 195 times [2018-07-23 15:28:11,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:12,883 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:12,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-23 15:28:12,883 INFO L450 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-23 15:28:12,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-23 15:28:12,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:28:12,888 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 198 states. [2018-07-23 15:28:13,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:13,608 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-07-23 15:28:13,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-23 15:28:13,609 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-23 15:28:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:13,609 INFO L225 Difference]: With dead ends: 399 [2018-07-23 15:28:13,609 INFO L226 Difference]: Without dead ends: 397 [2018-07-23 15:28:13,611 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-23 15:28:13,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-23 15:28:13,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-23 15:28:13,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-23 15:28:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-07-23 15:28:13,615 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 394 [2018-07-23 15:28:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:13,615 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-07-23 15:28:13,615 INFO L472 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-23 15:28:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-07-23 15:28:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-23 15:28:13,617 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:13,617 INFO L353 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1] [2018-07-23 15:28:13,617 INFO L414 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1577618223, now seen corresponding path program 196 times [2018-07-23 15:28:13,617 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:14,928 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:14,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-23 15:28:14,929 INFO L450 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-23 15:28:14,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-23 15:28:14,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-23 15:28:14,933 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 199 states. [2018-07-23 15:28:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:15,724 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-07-23 15:28:15,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-23 15:28:15,724 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 396 [2018-07-23 15:28:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:15,725 INFO L225 Difference]: With dead ends: 401 [2018-07-23 15:28:15,725 INFO L226 Difference]: Without dead ends: 399 [2018-07-23 15:28:15,727 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-23 15:28:15,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-23 15:28:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-07-23 15:28:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-23 15:28:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-07-23 15:28:15,731 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 396 [2018-07-23 15:28:15,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:15,731 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-07-23 15:28:15,731 INFO L472 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-23 15:28:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-07-23 15:28:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-23 15:28:15,732 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:15,732 INFO L353 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1] [2018-07-23 15:28:15,733 INFO L414 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:15,733 INFO L82 PathProgramCache]: Analyzing trace with hash -32291095, now seen corresponding path program 197 times [2018-07-23 15:28:15,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:17,073 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:17,073 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-23 15:28:17,074 INFO L450 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-23 15:28:17,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-23 15:28:17,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:28:17,078 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 200 states. [2018-07-23 15:28:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:17,925 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-07-23 15:28:17,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-23 15:28:17,926 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-23 15:28:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:17,927 INFO L225 Difference]: With dead ends: 403 [2018-07-23 15:28:17,927 INFO L226 Difference]: Without dead ends: 401 [2018-07-23 15:28:17,929 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-23 15:28:17,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-23 15:28:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-23 15:28:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-23 15:28:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2018-07-23 15:28:17,933 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 398 [2018-07-23 15:28:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:17,933 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2018-07-23 15:28:17,934 INFO L472 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-23 15:28:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2018-07-23 15:28:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-23 15:28:17,935 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:17,935 INFO L353 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1] [2018-07-23 15:28:17,935 INFO L414 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:17,935 INFO L82 PathProgramCache]: Analyzing trace with hash -966919133, now seen corresponding path program 198 times [2018-07-23 15:28:17,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:19,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:19,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-23 15:28:19,270 INFO L450 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-23 15:28:19,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-23 15:28:19,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-23 15:28:19,275 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 201 states. [2018-07-23 15:28:20,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:20,479 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-07-23 15:28:20,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-23 15:28:20,479 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 400 [2018-07-23 15:28:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:20,480 INFO L225 Difference]: With dead ends: 405 [2018-07-23 15:28:20,480 INFO L226 Difference]: Without dead ends: 403 [2018-07-23 15:28:20,482 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-23 15:28:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-23 15:28:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-23 15:28:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-23 15:28:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-07-23 15:28:20,485 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 400 [2018-07-23 15:28:20,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:20,486 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-07-23 15:28:20,486 INFO L472 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-23 15:28:20,486 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-07-23 15:28:20,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-23 15:28:20,487 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:20,487 INFO L353 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1] [2018-07-23 15:28:20,487 INFO L414 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1496298787, now seen corresponding path program 199 times [2018-07-23 15:28:20,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:21,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:21,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-23 15:28:21,861 INFO L450 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-23 15:28:21,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-23 15:28:21,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-23 15:28:21,866 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 202 states. [2018-07-23 15:28:23,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:23,520 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-07-23 15:28:23,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-23 15:28:23,520 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-23 15:28:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:23,521 INFO L225 Difference]: With dead ends: 407 [2018-07-23 15:28:23,521 INFO L226 Difference]: Without dead ends: 405 [2018-07-23 15:28:23,523 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-23 15:28:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-23 15:28:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-23 15:28:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-23 15:28:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 405 transitions. [2018-07-23 15:28:23,528 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 405 transitions. Word has length 402 [2018-07-23 15:28:23,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:23,528 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 405 transitions. [2018-07-23 15:28:23,528 INFO L472 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-23 15:28:23,528 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 405 transitions. [2018-07-23 15:28:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-23 15:28:23,529 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:23,529 INFO L353 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1] [2018-07-23 15:28:23,529 INFO L414 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:23,530 INFO L82 PathProgramCache]: Analyzing trace with hash 870961943, now seen corresponding path program 200 times [2018-07-23 15:28:23,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:24,825 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:24,825 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-23 15:28:24,826 INFO L450 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-23 15:28:24,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-23 15:28:24,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-23 15:28:24,830 INFO L87 Difference]: Start difference. First operand 405 states and 405 transitions. Second operand 203 states. [2018-07-23 15:28:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:27,014 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-07-23 15:28:27,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-23 15:28:27,014 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 404 [2018-07-23 15:28:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:27,015 INFO L225 Difference]: With dead ends: 409 [2018-07-23 15:28:27,015 INFO L226 Difference]: Without dead ends: 407 [2018-07-23 15:28:27,017 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-23 15:28:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-23 15:28:27,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-07-23 15:28:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-23 15:28:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-07-23 15:28:27,021 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-07-23 15:28:27,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:27,021 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-07-23 15:28:27,021 INFO L472 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-23 15:28:27,022 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-07-23 15:28:27,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-23 15:28:27,023 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:27,023 INFO L353 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1] [2018-07-23 15:28:27,024 INFO L414 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:27,024 INFO L82 PathProgramCache]: Analyzing trace with hash -524143407, now seen corresponding path program 201 times [2018-07-23 15:28:27,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:28,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:28,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-23 15:28:28,443 INFO L450 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-23 15:28:28,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-23 15:28:28,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:28:28,446 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 204 states. [2018-07-23 15:28:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:30,641 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-07-23 15:28:30,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-23 15:28:30,641 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-23 15:28:30,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:30,642 INFO L225 Difference]: With dead ends: 411 [2018-07-23 15:28:30,642 INFO L226 Difference]: Without dead ends: 409 [2018-07-23 15:28:30,643 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-23 15:28:30,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-23 15:28:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-23 15:28:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-23 15:28:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-07-23 15:28:30,647 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 406 [2018-07-23 15:28:30,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:30,647 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-07-23 15:28:30,647 INFO L472 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-23 15:28:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-07-23 15:28:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-23 15:28:30,648 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:30,648 INFO L353 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1] [2018-07-23 15:28:30,648 INFO L414 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:30,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1190588405, now seen corresponding path program 202 times [2018-07-23 15:28:30,649 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:32,002 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:32,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-23 15:28:32,003 INFO L450 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-23 15:28:32,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-23 15:28:32,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:28:32,007 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 205 states. [2018-07-23 15:28:32,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:32,981 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-07-23 15:28:32,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-23 15:28:32,981 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 408 [2018-07-23 15:28:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:32,982 INFO L225 Difference]: With dead ends: 413 [2018-07-23 15:28:32,982 INFO L226 Difference]: Without dead ends: 411 [2018-07-23 15:28:32,984 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-23 15:28:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-23 15:28:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-23 15:28:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-23 15:28:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-07-23 15:28:32,988 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 408 [2018-07-23 15:28:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:32,988 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-07-23 15:28:32,988 INFO L472 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-23 15:28:32,988 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-07-23 15:28:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-23 15:28:32,989 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:32,990 INFO L353 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1] [2018-07-23 15:28:32,990 INFO L414 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:32,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1694104379, now seen corresponding path program 203 times [2018-07-23 15:28:32,990 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:34,429 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:34,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-23 15:28:34,429 INFO L450 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-23 15:28:34,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-23 15:28:34,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:28:34,433 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 206 states. [2018-07-23 15:28:35,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:35,334 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-07-23 15:28:35,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-23 15:28:35,335 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-23 15:28:35,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:35,335 INFO L225 Difference]: With dead ends: 415 [2018-07-23 15:28:35,335 INFO L226 Difference]: Without dead ends: 413 [2018-07-23 15:28:35,337 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-23 15:28:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-23 15:28:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-23 15:28:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-23 15:28:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-07-23 15:28:35,341 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 410 [2018-07-23 15:28:35,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:35,341 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-07-23 15:28:35,342 INFO L472 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-23 15:28:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-07-23 15:28:35,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-23 15:28:35,343 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:35,343 INFO L353 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1] [2018-07-23 15:28:35,343 INFO L414 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:35,343 INFO L82 PathProgramCache]: Analyzing trace with hash -241650945, now seen corresponding path program 204 times [2018-07-23 15:28:35,343 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:36,718 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:36,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-23 15:28:36,718 INFO L450 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-23 15:28:36,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-23 15:28:36,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-23 15:28:36,723 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 207 states. [2018-07-23 15:28:38,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:38,594 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-07-23 15:28:38,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-23 15:28:38,594 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 412 [2018-07-23 15:28:38,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:38,595 INFO L225 Difference]: With dead ends: 417 [2018-07-23 15:28:38,595 INFO L226 Difference]: Without dead ends: 415 [2018-07-23 15:28:38,598 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-23 15:28:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-23 15:28:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-07-23 15:28:38,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-23 15:28:38,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-07-23 15:28:38,603 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 412 [2018-07-23 15:28:38,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:38,603 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-07-23 15:28:38,603 INFO L472 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-23 15:28:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-07-23 15:28:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-23 15:28:38,605 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:38,605 INFO L353 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1] [2018-07-23 15:28:38,605 INFO L414 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:38,605 INFO L82 PathProgramCache]: Analyzing trace with hash -298272071, now seen corresponding path program 205 times [2018-07-23 15:28:38,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:40,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:40,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-23 15:28:40,058 INFO L450 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-23 15:28:40,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-23 15:28:40,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:28:40,063 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 208 states. [2018-07-23 15:28:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:42,222 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-07-23 15:28:42,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-23 15:28:42,222 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-23 15:28:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:42,223 INFO L225 Difference]: With dead ends: 419 [2018-07-23 15:28:42,223 INFO L226 Difference]: Without dead ends: 417 [2018-07-23 15:28:42,224 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-23 15:28:42,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-23 15:28:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-23 15:28:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-23 15:28:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 417 transitions. [2018-07-23 15:28:42,228 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 417 transitions. Word has length 414 [2018-07-23 15:28:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:42,229 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 417 transitions. [2018-07-23 15:28:42,229 INFO L472 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-23 15:28:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 417 transitions. [2018-07-23 15:28:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-23 15:28:42,230 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:42,230 INFO L353 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1] [2018-07-23 15:28:42,230 INFO L414 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:42,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1123400691, now seen corresponding path program 206 times [2018-07-23 15:28:42,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:43,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:43,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-23 15:28:43,677 INFO L450 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-23 15:28:43,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-23 15:28:43,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:28:43,682 INFO L87 Difference]: Start difference. First operand 417 states and 417 transitions. Second operand 209 states. [2018-07-23 15:28:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:44,693 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-07-23 15:28:44,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-23 15:28:44,693 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 416 [2018-07-23 15:28:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:44,694 INFO L225 Difference]: With dead ends: 421 [2018-07-23 15:28:44,694 INFO L226 Difference]: Without dead ends: 419 [2018-07-23 15:28:44,696 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-23 15:28:44,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-23 15:28:44,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-23 15:28:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-23 15:28:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-07-23 15:28:44,701 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 416 [2018-07-23 15:28:44,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:44,701 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-07-23 15:28:44,701 INFO L472 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-23 15:28:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-07-23 15:28:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-23 15:28:44,702 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:44,702 INFO L353 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1] [2018-07-23 15:28:44,702 INFO L414 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1551324845, now seen corresponding path program 207 times [2018-07-23 15:28:44,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:46,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:46,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-23 15:28:46,156 INFO L450 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-23 15:28:46,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-23 15:28:46,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:28:46,162 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 210 states. [2018-07-23 15:28:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:48,330 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-07-23 15:28:48,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-23 15:28:48,331 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-23 15:28:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:48,331 INFO L225 Difference]: With dead ends: 423 [2018-07-23 15:28:48,332 INFO L226 Difference]: Without dead ends: 421 [2018-07-23 15:28:48,334 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-23 15:28:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-23 15:28:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-23 15:28:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-23 15:28:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2018-07-23 15:28:48,337 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 418 [2018-07-23 15:28:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:48,338 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2018-07-23 15:28:48,338 INFO L472 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-23 15:28:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2018-07-23 15:28:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-23 15:28:48,339 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:48,339 INFO L353 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1] [2018-07-23 15:28:48,339 INFO L414 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:48,339 INFO L82 PathProgramCache]: Analyzing trace with hash 469576423, now seen corresponding path program 208 times [2018-07-23 15:28:48,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:49,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:49,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-23 15:28:49,857 INFO L450 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-23 15:28:49,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-23 15:28:49,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-23 15:28:49,860 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand 211 states. [2018-07-23 15:28:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:50,976 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-07-23 15:28:50,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-23 15:28:50,976 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 420 [2018-07-23 15:28:50,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:50,977 INFO L225 Difference]: With dead ends: 425 [2018-07-23 15:28:50,977 INFO L226 Difference]: Without dead ends: 423 [2018-07-23 15:28:50,978 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-23 15:28:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-23 15:28:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-07-23 15:28:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-23 15:28:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-07-23 15:28:50,982 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 420 [2018-07-23 15:28:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:50,983 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-07-23 15:28:50,983 INFO L472 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-23 15:28:50,983 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-07-23 15:28:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-23 15:28:50,984 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:50,984 INFO L353 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1] [2018-07-23 15:28:50,984 INFO L414 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:50,985 INFO L82 PathProgramCache]: Analyzing trace with hash 291428513, now seen corresponding path program 209 times [2018-07-23 15:28:50,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:52,515 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:52,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-23 15:28:52,516 INFO L450 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-23 15:28:52,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-23 15:28:52,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:28:52,521 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 212 states. [2018-07-23 15:28:54,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:54,172 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-07-23 15:28:54,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-23 15:28:54,172 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-23 15:28:54,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:54,173 INFO L225 Difference]: With dead ends: 427 [2018-07-23 15:28:54,173 INFO L226 Difference]: Without dead ends: 425 [2018-07-23 15:28:54,175 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-23 15:28:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-23 15:28:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-23 15:28:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-23 15:28:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 425 transitions. [2018-07-23 15:28:54,179 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 425 transitions. Word has length 422 [2018-07-23 15:28:54,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:54,179 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 425 transitions. [2018-07-23 15:28:54,179 INFO L472 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-23 15:28:54,179 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 425 transitions. [2018-07-23 15:28:54,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-23 15:28:54,181 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:54,181 INFO L353 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1] [2018-07-23 15:28:54,181 INFO L414 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:54,181 INFO L82 PathProgramCache]: Analyzing trace with hash 889978843, now seen corresponding path program 210 times [2018-07-23 15:28:54,181 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:55,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:55,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-23 15:28:55,741 INFO L450 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-23 15:28:55,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-23 15:28:55,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:28:55,746 INFO L87 Difference]: Start difference. First operand 425 states and 425 transitions. Second operand 213 states. [2018-07-23 15:28:57,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:28:57,929 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-07-23 15:28:57,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-23 15:28:57,929 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 424 [2018-07-23 15:28:57,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:28:57,929 INFO L225 Difference]: With dead ends: 429 [2018-07-23 15:28:57,930 INFO L226 Difference]: Without dead ends: 427 [2018-07-23 15:28:57,932 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-23 15:28:57,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-23 15:28:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-23 15:28:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-23 15:28:57,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-07-23 15:28:57,935 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 424 [2018-07-23 15:28:57,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:28:57,936 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-07-23 15:28:57,936 INFO L472 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-23 15:28:57,936 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-07-23 15:28:57,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-23 15:28:57,937 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:28:57,937 INFO L353 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1] [2018-07-23 15:28:57,937 INFO L414 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:28:57,938 INFO L82 PathProgramCache]: Analyzing trace with hash 571228309, now seen corresponding path program 211 times [2018-07-23 15:28:57,938 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:28:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:28:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:28:59,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:28:59,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-23 15:28:59,597 INFO L450 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-23 15:28:59,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-23 15:28:59,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:28:59,603 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 214 states. [2018-07-23 15:29:01,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:01,124 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-07-23 15:29:01,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-23 15:29:01,124 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-07-23 15:29:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:01,124 INFO L225 Difference]: With dead ends: 431 [2018-07-23 15:29:01,124 INFO L226 Difference]: Without dead ends: 429 [2018-07-23 15:29:01,125 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-23 15:29:01,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-23 15:29:01,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-23 15:29:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-23 15:29:01,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 429 transitions. [2018-07-23 15:29:01,129 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 429 transitions. Word has length 426 [2018-07-23 15:29:01,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:01,129 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 429 transitions. [2018-07-23 15:29:01,130 INFO L472 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-23 15:29:01,130 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 429 transitions. [2018-07-23 15:29:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-23 15:29:01,131 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:01,131 INFO L353 BasicCegarLoop]: trace histogram [213, 212, 1, 1, 1] [2018-07-23 15:29:01,131 INFO L414 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:01,131 INFO L82 PathProgramCache]: Analyzing trace with hash -805356849, now seen corresponding path program 212 times [2018-07-23 15:29:01,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:02,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:02,776 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-23 15:29:02,776 INFO L450 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-23 15:29:02,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-23 15:29:02,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-23 15:29:02,781 INFO L87 Difference]: Start difference. First operand 429 states and 429 transitions. Second operand 215 states. [2018-07-23 15:29:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:03,972 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-07-23 15:29:03,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-23 15:29:03,972 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 428 [2018-07-23 15:29:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:03,973 INFO L225 Difference]: With dead ends: 433 [2018-07-23 15:29:03,973 INFO L226 Difference]: Without dead ends: 431 [2018-07-23 15:29:03,975 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-23 15:29:03,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-23 15:29:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-07-23 15:29:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-23 15:29:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-07-23 15:29:03,979 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 428 [2018-07-23 15:29:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:03,980 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-07-23 15:29:03,980 INFO L472 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-23 15:29:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-07-23 15:29:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-23 15:29:03,981 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:03,981 INFO L353 BasicCegarLoop]: trace histogram [214, 213, 1, 1, 1] [2018-07-23 15:29:03,981 INFO L414 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:03,981 INFO L82 PathProgramCache]: Analyzing trace with hash -853766519, now seen corresponding path program 213 times [2018-07-23 15:29:03,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:05,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:05,754 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-23 15:29:05,754 INFO L450 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-23 15:29:05,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-23 15:29:05,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-23 15:29:05,758 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 216 states. [2018-07-23 15:29:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:08,171 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2018-07-23 15:29:08,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-23 15:29:08,171 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 430 [2018-07-23 15:29:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:08,172 INFO L225 Difference]: With dead ends: 435 [2018-07-23 15:29:08,172 INFO L226 Difference]: Without dead ends: 433 [2018-07-23 15:29:08,174 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-23 15:29:08,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-23 15:29:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-23 15:29:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-23 15:29:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 433 transitions. [2018-07-23 15:29:08,178 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 433 transitions. Word has length 430 [2018-07-23 15:29:08,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:08,178 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 433 transitions. [2018-07-23 15:29:08,178 INFO L472 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-23 15:29:08,178 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 433 transitions. [2018-07-23 15:29:08,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-23 15:29:08,179 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:08,180 INFO L353 BasicCegarLoop]: trace histogram [215, 214, 1, 1, 1] [2018-07-23 15:29:08,180 INFO L414 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:08,180 INFO L82 PathProgramCache]: Analyzing trace with hash -130819133, now seen corresponding path program 214 times [2018-07-23 15:29:08,180 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 0 proven. 46010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:09,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:09,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-23 15:29:09,969 INFO L450 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-23 15:29:09,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-23 15:29:09,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-23 15:29:09,975 INFO L87 Difference]: Start difference. First operand 433 states and 433 transitions. Second operand 217 states. [2018-07-23 15:29:11,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:11,365 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-07-23 15:29:11,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-23 15:29:11,365 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 432 [2018-07-23 15:29:11,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:11,365 INFO L225 Difference]: With dead ends: 437 [2018-07-23 15:29:11,366 INFO L226 Difference]: Without dead ends: 435 [2018-07-23 15:29:11,368 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-23 15:29:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-23 15:29:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-07-23 15:29:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-23 15:29:11,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-07-23 15:29:11,372 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 432 [2018-07-23 15:29:11,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:11,372 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-07-23 15:29:11,372 INFO L472 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-23 15:29:11,372 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-07-23 15:29:11,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-23 15:29:11,374 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:11,374 INFO L353 BasicCegarLoop]: trace histogram [216, 215, 1, 1, 1] [2018-07-23 15:29:11,374 INFO L414 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:11,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1163083139, now seen corresponding path program 215 times [2018-07-23 15:29:11,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 46440 backedges. 0 proven. 46440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:13,048 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:13,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-23 15:29:13,048 INFO L450 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-23 15:29:13,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-23 15:29:13,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-23 15:29:13,054 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 218 states. [2018-07-23 15:29:15,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:15,744 INFO L93 Difference]: Finished difference Result 439 states and 439 transitions. [2018-07-23 15:29:15,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-23 15:29:15,744 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 434 [2018-07-23 15:29:15,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:15,745 INFO L225 Difference]: With dead ends: 439 [2018-07-23 15:29:15,745 INFO L226 Difference]: Without dead ends: 437 [2018-07-23 15:29:15,748 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-23 15:29:15,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-07-23 15:29:15,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-07-23 15:29:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-23 15:29:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2018-07-23 15:29:15,752 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 434 [2018-07-23 15:29:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:15,752 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2018-07-23 15:29:15,752 INFO L472 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-23 15:29:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2018-07-23 15:29:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-23 15:29:15,753 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:15,754 INFO L353 BasicCegarLoop]: trace histogram [217, 216, 1, 1, 1] [2018-07-23 15:29:15,754 INFO L414 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:15,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1031347529, now seen corresponding path program 216 times [2018-07-23 15:29:15,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:17,508 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:17,508 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-23 15:29:17,508 INFO L450 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-23 15:29:17,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-23 15:29:17,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-23 15:29:17,512 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 219 states. [2018-07-23 15:29:19,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:19,874 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-07-23 15:29:19,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-23 15:29:19,874 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 436 [2018-07-23 15:29:19,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:19,875 INFO L225 Difference]: With dead ends: 441 [2018-07-23 15:29:19,875 INFO L226 Difference]: Without dead ends: 439 [2018-07-23 15:29:19,876 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-23 15:29:19,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-23 15:29:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-07-23 15:29:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-07-23 15:29:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-07-23 15:29:19,880 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 436 [2018-07-23 15:29:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:19,881 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-07-23 15:29:19,881 INFO L472 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-23 15:29:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-07-23 15:29:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-23 15:29:19,882 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:19,882 INFO L353 BasicCegarLoop]: trace histogram [218, 217, 1, 1, 1] [2018-07-23 15:29:19,882 INFO L414 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:19,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1012522097, now seen corresponding path program 217 times [2018-07-23 15:29:19,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 47306 backedges. 0 proven. 47306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:21,639 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:21,639 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-23 15:29:21,639 INFO L450 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-23 15:29:21,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-23 15:29:21,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-23 15:29:21,645 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 220 states. [2018-07-23 15:29:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:22,657 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2018-07-23 15:29:22,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-23 15:29:22,657 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 438 [2018-07-23 15:29:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:22,658 INFO L225 Difference]: With dead ends: 443 [2018-07-23 15:29:22,658 INFO L226 Difference]: Without dead ends: 441 [2018-07-23 15:29:22,660 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-23 15:29:22,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-07-23 15:29:22,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-07-23 15:29:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-07-23 15:29:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 441 transitions. [2018-07-23 15:29:22,665 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 441 transitions. Word has length 438 [2018-07-23 15:29:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:22,665 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 441 transitions. [2018-07-23 15:29:22,665 INFO L472 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-23 15:29:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 441 transitions. [2018-07-23 15:29:22,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-23 15:29:22,666 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:22,666 INFO L353 BasicCegarLoop]: trace histogram [219, 218, 1, 1, 1] [2018-07-23 15:29:22,666 INFO L414 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:22,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1923788885, now seen corresponding path program 218 times [2018-07-23 15:29:22,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 47742 backedges. 0 proven. 47742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:24,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:24,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-23 15:29:24,376 INFO L450 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-23 15:29:24,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-23 15:29:24,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-23 15:29:24,381 INFO L87 Difference]: Start difference. First operand 441 states and 441 transitions. Second operand 221 states. [2018-07-23 15:29:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:25,330 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-07-23 15:29:25,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-23 15:29:25,330 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 440 [2018-07-23 15:29:25,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:25,331 INFO L225 Difference]: With dead ends: 445 [2018-07-23 15:29:25,331 INFO L226 Difference]: Without dead ends: 443 [2018-07-23 15:29:25,334 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-23 15:29:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-07-23 15:29:25,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-07-23 15:29:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-07-23 15:29:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-07-23 15:29:25,339 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 440 [2018-07-23 15:29:25,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:25,339 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-07-23 15:29:25,339 INFO L472 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-23 15:29:25,339 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-07-23 15:29:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-23 15:29:25,340 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:25,340 INFO L353 BasicCegarLoop]: trace histogram [220, 219, 1, 1, 1] [2018-07-23 15:29:25,340 INFO L414 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:25,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1925129115, now seen corresponding path program 219 times [2018-07-23 15:29:25,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 48180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:27,168 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:27,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-23 15:29:27,169 INFO L450 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-23 15:29:27,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-23 15:29:27,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-23 15:29:27,172 INFO L87 Difference]: Start difference. First operand 443 states and 443 transitions. Second operand 222 states. [2018-07-23 15:29:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:29,203 INFO L93 Difference]: Finished difference Result 447 states and 447 transitions. [2018-07-23 15:29:29,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-23 15:29:29,203 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 442 [2018-07-23 15:29:29,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:29,203 INFO L225 Difference]: With dead ends: 447 [2018-07-23 15:29:29,204 INFO L226 Difference]: Without dead ends: 445 [2018-07-23 15:29:29,205 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-23 15:29:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2018-07-23 15:29:29,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2018-07-23 15:29:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-07-23 15:29:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 445 transitions. [2018-07-23 15:29:29,209 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 445 transitions. Word has length 442 [2018-07-23 15:29:29,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:29,209 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 445 transitions. [2018-07-23 15:29:29,209 INFO L472 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-23 15:29:29,209 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 445 transitions. [2018-07-23 15:29:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-23 15:29:29,210 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:29,211 INFO L353 BasicCegarLoop]: trace histogram [221, 220, 1, 1, 1] [2018-07-23 15:29:29,211 INFO L414 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:29,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1081877151, now seen corresponding path program 220 times [2018-07-23 15:29:29,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 48620 backedges. 0 proven. 48620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:30,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:30,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-23 15:29:30,960 INFO L450 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-23 15:29:30,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-23 15:29:30,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-23 15:29:30,965 INFO L87 Difference]: Start difference. First operand 445 states and 445 transitions. Second operand 223 states. [2018-07-23 15:29:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:34,034 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-07-23 15:29:34,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-23 15:29:34,034 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 444 [2018-07-23 15:29:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:34,035 INFO L225 Difference]: With dead ends: 449 [2018-07-23 15:29:34,035 INFO L226 Difference]: Without dead ends: 447 [2018-07-23 15:29:34,037 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-23 15:29:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-07-23 15:29:34,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-07-23 15:29:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-07-23 15:29:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 447 transitions. [2018-07-23 15:29:34,042 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 447 transitions. Word has length 444 [2018-07-23 15:29:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:34,042 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 447 transitions. [2018-07-23 15:29:34,042 INFO L472 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-23 15:29:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 447 transitions. [2018-07-23 15:29:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-07-23 15:29:34,043 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:34,043 INFO L353 BasicCegarLoop]: trace histogram [222, 221, 1, 1, 1] [2018-07-23 15:29:34,044 INFO L414 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:34,044 INFO L82 PathProgramCache]: Analyzing trace with hash 301908569, now seen corresponding path program 221 times [2018-07-23 15:29:34,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 49062 backedges. 0 proven. 49062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:35,704 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:35,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-23 15:29:35,704 INFO L450 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-23 15:29:35,708 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-23 15:29:35,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-23 15:29:35,710 INFO L87 Difference]: Start difference. First operand 447 states and 447 transitions. Second operand 224 states. [2018-07-23 15:29:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:38,518 INFO L93 Difference]: Finished difference Result 451 states and 451 transitions. [2018-07-23 15:29:38,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-23 15:29:38,518 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 446 [2018-07-23 15:29:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:38,519 INFO L225 Difference]: With dead ends: 451 [2018-07-23 15:29:38,519 INFO L226 Difference]: Without dead ends: 449 [2018-07-23 15:29:38,521 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-23 15:29:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2018-07-23 15:29:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2018-07-23 15:29:38,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-07-23 15:29:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 449 transitions. [2018-07-23 15:29:38,526 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 449 transitions. Word has length 446 [2018-07-23 15:29:38,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:38,526 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 449 transitions. [2018-07-23 15:29:38,526 INFO L472 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-23 15:29:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 449 transitions. [2018-07-23 15:29:38,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-07-23 15:29:38,527 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:38,527 INFO L353 BasicCegarLoop]: trace histogram [223, 222, 1, 1, 1] [2018-07-23 15:29:38,527 INFO L414 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:38,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1923589229, now seen corresponding path program 222 times [2018-07-23 15:29:38,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 49506 backedges. 0 proven. 49506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:40,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:40,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-23 15:29:40,323 INFO L450 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-23 15:29:40,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-23 15:29:40,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-23 15:29:40,327 INFO L87 Difference]: Start difference. First operand 449 states and 449 transitions. Second operand 225 states. [2018-07-23 15:29:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:42,628 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-07-23 15:29:42,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-23 15:29:42,628 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 448 [2018-07-23 15:29:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:42,628 INFO L225 Difference]: With dead ends: 453 [2018-07-23 15:29:42,629 INFO L226 Difference]: Without dead ends: 451 [2018-07-23 15:29:42,630 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-23 15:29:42,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-07-23 15:29:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-07-23 15:29:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-07-23 15:29:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2018-07-23 15:29:42,634 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 448 [2018-07-23 15:29:42,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:42,634 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2018-07-23 15:29:42,634 INFO L472 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-23 15:29:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2018-07-23 15:29:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-07-23 15:29:42,636 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:42,636 INFO L353 BasicCegarLoop]: trace histogram [224, 223, 1, 1, 1] [2018-07-23 15:29:42,636 INFO L414 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:42,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1733259699, now seen corresponding path program 223 times [2018-07-23 15:29:42,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:44,439 INFO L134 CoverageAnalysis]: Checked inductivity of 49952 backedges. 0 proven. 49952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:44,439 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:44,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-23 15:29:44,439 INFO L450 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-23 15:29:44,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-23 15:29:44,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-23 15:29:44,445 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 226 states. [2018-07-23 15:29:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:46,637 INFO L93 Difference]: Finished difference Result 455 states and 455 transitions. [2018-07-23 15:29:46,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-23 15:29:46,638 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 450 [2018-07-23 15:29:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:46,638 INFO L225 Difference]: With dead ends: 455 [2018-07-23 15:29:46,638 INFO L226 Difference]: Without dead ends: 453 [2018-07-23 15:29:46,639 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-23 15:29:46,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-07-23 15:29:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-07-23 15:29:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-07-23 15:29:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 453 transitions. [2018-07-23 15:29:46,643 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 453 transitions. Word has length 450 [2018-07-23 15:29:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:46,643 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 453 transitions. [2018-07-23 15:29:46,643 INFO L472 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-23 15:29:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 453 transitions. [2018-07-23 15:29:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-07-23 15:29:46,645 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:46,645 INFO L353 BasicCegarLoop]: trace histogram [225, 224, 1, 1, 1] [2018-07-23 15:29:46,645 INFO L414 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:46,645 INFO L82 PathProgramCache]: Analyzing trace with hash 784792199, now seen corresponding path program 224 times [2018-07-23 15:29:46,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:29:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 50400 backedges. 0 proven. 50400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:29:48,542 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:29:48,542 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-23 15:29:48,543 INFO L450 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-23 15:29:48,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-23 15:29:48,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-23 15:29:48,548 INFO L87 Difference]: Start difference. First operand 453 states and 453 transitions. Second operand 227 states. [2018-07-23 15:29:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:29:50,772 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-07-23 15:29:50,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-23 15:29:50,772 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 452 [2018-07-23 15:29:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:29:50,773 INFO L225 Difference]: With dead ends: 457 [2018-07-23 15:29:50,773 INFO L226 Difference]: Without dead ends: 455 [2018-07-23 15:29:50,775 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-23 15:29:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-07-23 15:29:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-07-23 15:29:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-07-23 15:29:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-07-23 15:29:50,779 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 452 [2018-07-23 15:29:50,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:29:50,779 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-07-23 15:29:50,779 INFO L472 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-23 15:29:50,780 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-07-23 15:29:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-07-23 15:29:50,781 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:29:50,782 INFO L353 BasicCegarLoop]: trace histogram [226, 225, 1, 1, 1] [2018-07-23 15:29:50,782 INFO L414 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 15:29:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1728888767, now seen corresponding path program 225 times [2018-07-23 15:29:50,782 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:29:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-23 15:29:51,976 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 15:29:51,985 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 15:29:51,985 INFO L202 PluginConnector]: Adding new model nested.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:29:51 BoogieIcfgContainer [2018-07-23 15:29:51,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:29:51,986 INFO L168 Benchmark]: Toolchain (without parser) took 254912.22 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 586.9 MB. Max. memory is 7.1 GB. [2018-07-23 15:29:51,988 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.27 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 15:29:51,989 INFO L168 Benchmark]: Boogie Preprocessor took 54.87 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 15:29:51,989 INFO L168 Benchmark]: RCFGBuilder took 225.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 15:29:51,989 INFO L168 Benchmark]: TraceAbstraction took 254628.19 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 576.4 MB. Max. memory is 7.1 GB. [2018-07-23 15:29:51,991 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 0.27 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 54.87 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 225.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254628.19 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 576.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 63). Cancelled while BasicCegarLoop was analyzing trace of length 455 with TraceHistMax 226, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 156 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 254.5s OverallTime, 226 OverallIterations, 226 TraceHistogramMax, 113.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 901 SDtfs, 0 SDslu, 36851 SDs, 0 SdLazy, 37075 SolverSat, 473 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25650 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 25425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=455occurred in iteration=225, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 225 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 29.7s SatisfiabilityAnalysisTime, 97.4s InterpolantComputationTime, 51300 NumberOfCodeBlocks, 51300 NumberOfCodeBlocksAsserted, 225 NumberOfCheckSat, 51075 ConstructedInterpolants, 0 QuantifiedInterpolants, 46070325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 225 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3796800 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested.c_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-29-52-000.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested.c_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-29-52-000.csv Completed graceful shutdown