java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/jain_5.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:46:38,679 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:46:38,681 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:46:38,703 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:46:38,703 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:46:38,705 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:46:38,707 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:46:38,710 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:46:38,712 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:46:38,712 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:46:38,713 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-07-25 08:46:38,749 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:46:38,749 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:46:38,751 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:46:38,752 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:46:38,753 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:46:38,755 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:46:38,758 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:46:38,758 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:46:38,759 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:46:38,763 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:46:38,790 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:46:38,791 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:46:38,793 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:46:38,793 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:46:38,794 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:46:38,794 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:46:38,794 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:46:38,794 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:46:38,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:46:38,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:46:38,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:46:38,893 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:46:38,894 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:46:38,894 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/jain_5.i_2.bpl [2018-07-25 08:46:38,895 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/jain_5.i_2.bpl' [2018-07-25 08:46:38,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:46:38,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:46:38,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:46:38,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:46:38,966 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:46:38,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/1) ... [2018-07-25 08:46:39,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/1) ... [2018-07-25 08:46:39,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:46:39,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:46:39,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:46:39,011 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:46:39,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/1) ... [2018-07-25 08:46:39,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/1) ... [2018-07-25 08:46:39,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/1) ... [2018-07-25 08:46:39,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/1) ... [2018-07-25 08:46:39,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/1) ... [2018-07-25 08:46:39,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/1) ... [2018-07-25 08:46:39,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/1) ... [2018-07-25 08:46:39,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:46:39,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:46:39,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:46:39,035 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:46:39,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/1) ... [2018-07-25 08:46:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:46:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:46:39,247 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:46:39,247 INFO L202 PluginConnector]: Adding new model jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:46:39 BoogieIcfgContainer [2018-07-25 08:46:39,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:46:39,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:46:39,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:46:39,253 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:46:39,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:38" (1/2) ... [2018-07-25 08:46:39,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f59ef1 and model type jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:46:39, skipping insertion in model container [2018-07-25 08:46:39,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:46:39" (2/2) ... [2018-07-25 08:46:39,258 INFO L112 eAbstractionObserver]: Analyzing ICFG jain_5.i_2.bpl [2018-07-25 08:46:39,268 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:46:39,277 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:46:39,326 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:46:39,327 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:46:39,327 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:46:39,327 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:46:39,328 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:46:39,328 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:46:39,328 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:46:39,328 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:46:39,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:46:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:46:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:46:39,353 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:39,354 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:46:39,355 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:39,361 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2018-07-25 08:46:39,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:39,487 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:46:39,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:46:39,492 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:46:39,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:46:39,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:46:39,508 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 08:46:39,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:39,550 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 08:46:39,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:46:39,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:46:39,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:39,564 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:46:39,565 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:46:39,568 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:46:39,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:46:39,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 08:46:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:46:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:46:39,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:46:39,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:39,621 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:46:39,622 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:46:39,622 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:46:39,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:46:39,623 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:39,623 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:46:39,623 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:39,624 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2018-07-25 08:46:39,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:39,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:39,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:46:39,724 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:46:39,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:46:39,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:46:39,725 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-25 08:46:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:39,830 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:46:39,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:46:39,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-25 08:46:39,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:39,831 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:46:39,831 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:46:39,835 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:46:39,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:46:39,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:46:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:46:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:46:39,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:46:39,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:39,840 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:46:39,840 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:46:39,841 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:46:39,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:46:39,841 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:39,841 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:46:39,842 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:39,842 INFO L82 PathProgramCache]: Analyzing trace with hash 141355773, now seen corresponding path program 2 times [2018-07-25 08:46:39,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:39,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:39,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:46:39,944 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:46:39,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:46:39,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:46:39,945 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-07-25 08:46:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:40,112 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:46:40,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:46:40,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-25 08:46:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:40,113 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:46:40,113 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:46:40,114 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:46:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:46:40,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:46:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:46:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:46:40,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 08:46:40,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:40,130 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:46:40,130 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:46:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:46:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:46:40,131 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:40,131 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 08:46:40,132 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:40,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1596122631, now seen corresponding path program 3 times [2018-07-25 08:46:40,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:40,262 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:40,263 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:46:40,263 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:46:40,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:46:40,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:46:40,265 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-07-25 08:46:40,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:40,396 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:46:40,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:46:40,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2018-07-25 08:46:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:40,399 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:46:40,399 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:46:40,400 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:46:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:46:40,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:46:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:46:40,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:46:40,416 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 08:46:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:40,418 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:46:40,418 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:46:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:46:40,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:46:40,419 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:40,419 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 08:46:40,419 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:40,420 INFO L82 PathProgramCache]: Analyzing trace with hash -570590731, now seen corresponding path program 4 times [2018-07-25 08:46:40,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:40,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:40,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:46:40,536 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:46:40,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:46:40,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:46:40,537 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 9 states. [2018-07-25 08:46:40,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:40,622 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:46:40,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:46:40,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:46:40,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:40,624 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:46:40,624 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:46:40,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:46:40,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:46:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:46:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:46:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:46:40,632 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 08:46:40,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:40,632 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:46:40,632 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:46:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:46:40,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:46:40,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:40,634 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 08:46:40,634 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:40,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1418054385, now seen corresponding path program 5 times [2018-07-25 08:46:40,635 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:40,718 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:40,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:46:40,719 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:46:40,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:46:40,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:46:40,720 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 10 states. [2018-07-25 08:46:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:40,826 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:46:40,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:46:40,827 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2018-07-25 08:46:40,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:40,828 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:46:40,828 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:46:40,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:46:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:46:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:46:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:46:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:46:40,842 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-25 08:46:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:40,843 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:46:40,843 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:46:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:46:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:46:40,845 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:40,845 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-25 08:46:40,846 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1245564141, now seen corresponding path program 6 times [2018-07-25 08:46:40,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:40,954 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:40,955 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:46:40,955 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:46:40,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:46:40,957 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:46:40,957 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 11 states. [2018-07-25 08:46:41,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:41,107 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:46:41,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:46:41,109 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2018-07-25 08:46:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:41,110 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:46:41,112 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:46:41,113 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:46:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:46:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:46:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:46:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:46:41,122 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-25 08:46:41,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:41,122 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:46:41,124 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:46:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:46:41,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:46:41,125 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:41,125 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-25 08:46:41,125 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:41,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1308803095, now seen corresponding path program 7 times [2018-07-25 08:46:41,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:41,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:41,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:46:41,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:46:41,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:46:41,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:46:41,222 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 12 states. [2018-07-25 08:46:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:41,371 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:46:41,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:46:41,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2018-07-25 08:46:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:41,374 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:46:41,375 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:46:41,375 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:46:41,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:46:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:46:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:46:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:46:41,383 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-25 08:46:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:41,384 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:46:41,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:46:41,384 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:46:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:46:41,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:41,386 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-25 08:46:41,386 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:41,387 INFO L82 PathProgramCache]: Analyzing trace with hash 665576421, now seen corresponding path program 8 times [2018-07-25 08:46:41,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:41,497 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:41,497 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:46:41,498 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:46:41,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:46:41,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:46:41,499 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2018-07-25 08:46:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:41,667 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:46:41,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:46:41,668 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-07-25 08:46:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:41,669 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:46:41,670 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:46:41,670 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:46:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:46:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:46:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:46:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:46:41,680 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-25 08:46:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:41,681 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:46:41,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:46:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:46:41,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:46:41,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:41,682 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-25 08:46:41,683 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:41,685 INFO L82 PathProgramCache]: Analyzing trace with hash -331253535, now seen corresponding path program 9 times [2018-07-25 08:46:41,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:41,793 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:41,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:46:41,794 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:46:41,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:46:41,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:46:41,795 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 14 states. [2018-07-25 08:46:42,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:42,002 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:46:42,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:46:42,002 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2018-07-25 08:46:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:42,003 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:46:42,003 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:46:42,004 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:46:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:46:42,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:46:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:46:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:46:42,023 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-25 08:46:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:42,023 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:46:42,024 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:46:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:46:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:46:42,025 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:42,025 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-25 08:46:42,025 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:42,027 INFO L82 PathProgramCache]: Analyzing trace with hash -507134243, now seen corresponding path program 10 times [2018-07-25 08:46:42,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:42,161 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:42,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:46:42,162 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:46:42,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:46:42,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:46:42,163 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 15 states. [2018-07-25 08:46:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:42,428 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:46:42,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:46:42,429 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2018-07-25 08:46:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:42,430 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:46:42,430 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:46:42,434 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:46:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:46:42,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:46:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:46:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:46:42,453 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-25 08:46:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:42,454 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:46:42,454 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:46:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:46:42,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:46:42,457 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:42,457 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-25 08:46:42,458 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:42,458 INFO L82 PathProgramCache]: Analyzing trace with hash -2024770087, now seen corresponding path program 11 times [2018-07-25 08:46:42,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:42,612 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:42,612 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:46:42,612 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:46:42,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:46:42,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:46:42,614 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 16 states. [2018-07-25 08:46:42,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:42,859 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:46:42,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:46:42,860 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2018-07-25 08:46:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:42,860 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:46:42,861 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:46:42,861 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:46:42,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:46:42,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:46:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:46:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:46:42,877 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-25 08:46:42,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:42,877 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:46:42,877 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:46:42,877 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:46:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:46:42,879 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:42,879 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-25 08:46:42,880 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:42,880 INFO L82 PathProgramCache]: Analyzing trace with hash -183935531, now seen corresponding path program 12 times [2018-07-25 08:46:42,880 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:43,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:43,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:46:43,023 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:46:43,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:46:43,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:46:43,024 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 17 states. [2018-07-25 08:46:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:43,273 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:46:43,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:46:43,273 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 28 [2018-07-25 08:46:43,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:43,274 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:46:43,275 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:46:43,276 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:46:43,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:46:43,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:46:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:46:43,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:46:43,289 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-25 08:46:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:43,289 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:46:43,289 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:46:43,289 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:46:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:46:43,290 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:43,290 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-25 08:46:43,291 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:43,291 INFO L82 PathProgramCache]: Analyzing trace with hash -668453167, now seen corresponding path program 13 times [2018-07-25 08:46:43,291 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:43,442 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:43,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:46:43,443 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:46:43,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:46:43,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:46:43,444 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 18 states. [2018-07-25 08:46:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:43,766 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:46:43,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:46:43,766 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 30 [2018-07-25 08:46:43,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:43,767 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:46:43,767 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:46:43,768 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:46:43,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:46:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:46:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:46:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:46:43,791 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-25 08:46:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:43,792 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:46:43,792 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:46:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:46:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:46:43,793 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:43,794 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-25 08:46:43,794 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:43,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1861533901, now seen corresponding path program 14 times [2018-07-25 08:46:43,794 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:43,953 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:43,953 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:46:43,953 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:46:43,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:46:43,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:46:43,954 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 19 states. [2018-07-25 08:46:44,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:44,234 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:46:44,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:46:44,234 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 32 [2018-07-25 08:46:44,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:44,235 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:46:44,235 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:46:44,236 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:46:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:46:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:46:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:46:44,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:46:44,250 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-25 08:46:44,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:44,250 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:46:44,250 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:46:44,250 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:46:44,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:46:44,251 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:44,251 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-25 08:46:44,251 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2067350583, now seen corresponding path program 15 times [2018-07-25 08:46:44,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:44,420 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:44,420 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:46:44,421 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:46:44,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:46:44,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:46:44,425 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 20 states. [2018-07-25 08:46:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:44,768 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:46:44,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:46:44,770 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 34 [2018-07-25 08:46:44,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:44,771 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:46:44,771 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:46:44,772 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:46:44,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:46:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:46:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:46:44,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:46:44,788 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-25 08:46:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:44,788 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:46:44,788 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:46:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:46:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:46:44,789 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:44,789 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-25 08:46:44,790 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:44,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1845880773, now seen corresponding path program 16 times [2018-07-25 08:46:44,790 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:44,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:44,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:46:44,944 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:46:44,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:46:44,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:46:44,945 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 21 states. [2018-07-25 08:46:45,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:45,282 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:46:45,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:46:45,282 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2018-07-25 08:46:45,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:45,283 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:46:45,283 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:46:45,284 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:46:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:46:45,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:46:45,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:46:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:46:45,311 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-25 08:46:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:45,311 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:46:45,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:46:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:46:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:46:45,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:45,314 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-25 08:46:45,314 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:45,314 INFO L82 PathProgramCache]: Analyzing trace with hash 69862593, now seen corresponding path program 17 times [2018-07-25 08:46:45,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:45,504 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:45,505 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:46:45,505 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:46:45,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:46:45,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:46:45,506 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 22 states. [2018-07-25 08:46:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:45,885 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:46:45,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:46:45,885 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 38 [2018-07-25 08:46:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:45,886 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:46:45,886 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:46:45,890 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:46:45,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:46:45,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:46:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:46:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:46:45,910 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-25 08:46:45,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:45,910 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:46:45,910 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:46:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:46:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:46:45,911 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:45,911 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-25 08:46:45,915 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:45,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1581591875, now seen corresponding path program 18 times [2018-07-25 08:46:45,916 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:46,138 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:46,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:46:46,138 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:46:46,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:46:46,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:46:46,140 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 23 states. [2018-07-25 08:46:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:46,617 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:46:46,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:46:46,617 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 40 [2018-07-25 08:46:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:46,618 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:46:46,618 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:46:46,623 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:46:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:46:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:46:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:46:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:46:46,641 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-25 08:46:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:46,642 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:46:46,642 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:46:46,642 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:46:46,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:46:46,643 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:46,643 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-25 08:46:46,643 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:46,644 INFO L82 PathProgramCache]: Analyzing trace with hash 508563897, now seen corresponding path program 19 times [2018-07-25 08:46:46,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:46,856 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:46,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:46:46,857 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:46:46,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:46:46,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:46:46,858 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 24 states. [2018-07-25 08:46:47,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:47,311 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:46:47,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:46:47,311 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 42 [2018-07-25 08:46:47,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:47,312 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:46:47,312 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:46:47,313 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:46:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:46:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:46:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:46:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:46:47,340 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-25 08:46:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:47,341 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:46:47,341 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:46:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:46:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:46:47,343 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:47,344 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-25 08:46:47,344 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:47,344 INFO L82 PathProgramCache]: Analyzing trace with hash -896433739, now seen corresponding path program 20 times [2018-07-25 08:46:47,346 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:47,547 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:47,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:46:47,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:46:47,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:46:47,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:46:47,549 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 25 states. [2018-07-25 08:46:48,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:48,033 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:46:48,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:46:48,033 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 44 [2018-07-25 08:46:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:48,034 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:46:48,034 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:46:48,036 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=1851, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:46:48,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:46:48,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:46:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:46:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:46:48,059 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-25 08:46:48,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:48,060 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:46:48,060 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:46:48,060 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:46:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:46:48,061 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:48,061 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-25 08:46:48,061 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:48,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1815536305, now seen corresponding path program 21 times [2018-07-25 08:46:48,061 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:48,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:48,289 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:46:48,289 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:46:48,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:46:48,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:46:48,290 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 26 states. [2018-07-25 08:46:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:48,830 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:46:48,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:46:48,831 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 46 [2018-07-25 08:46:48,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:48,831 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:46:48,832 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:46:48,837 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:46:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:46:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:46:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:46:48,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:46:48,859 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-25 08:46:48,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:48,859 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:46:48,859 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:46:48,859 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:46:48,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:46:48,860 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:48,860 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-25 08:46:48,860 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:48,860 INFO L82 PathProgramCache]: Analyzing trace with hash 973599917, now seen corresponding path program 22 times [2018-07-25 08:46:48,861 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:49,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:49,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:46:49,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:46:49,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:46:49,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:46:49,106 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 27 states. [2018-07-25 08:46:49,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:49,788 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:46:49,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:46:49,788 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 48 [2018-07-25 08:46:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:49,789 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:46:49,789 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:46:49,790 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=2211, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:46:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:46:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:46:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:46:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:46:49,820 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-25 08:46:49,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:49,820 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:46:49,820 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:46:49,821 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:46:49,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:46:49,821 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:49,821 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-25 08:46:49,821 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:49,822 INFO L82 PathProgramCache]: Analyzing trace with hash -673417303, now seen corresponding path program 23 times [2018-07-25 08:46:49,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:50,061 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:50,061 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:46:50,062 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:46:50,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:46:50,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:46:50,063 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 28 states. [2018-07-25 08:46:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:50,633 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:46:50,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:46:50,633 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 50 [2018-07-25 08:46:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:50,634 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:46:50,634 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:46:50,636 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=2403, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:46:50,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:46:50,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:46:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:46:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:46:50,661 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-25 08:46:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:50,661 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:46:50,661 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:46:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:46:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:46:50,662 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:50,662 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-25 08:46:50,662 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:50,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1385966501, now seen corresponding path program 24 times [2018-07-25 08:46:50,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:50,918 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:50,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:46:50,918 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:46:50,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:46:50,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:46:50,919 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 29 states. [2018-07-25 08:46:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:51,518 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:46:51,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:46:51,518 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 52 [2018-07-25 08:46:51,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:51,519 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:46:51,519 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:46:51,521 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:46:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:46:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:46:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:46:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:46:51,553 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-25 08:46:51,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:51,553 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:46:51,553 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:46:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:46:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:46:51,554 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:51,554 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-25 08:46:51,554 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:51,555 INFO L82 PathProgramCache]: Analyzing trace with hash 473878689, now seen corresponding path program 25 times [2018-07-25 08:46:51,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:51,820 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:51,821 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:46:51,821 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:46:51,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:46:51,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:46:51,823 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 30 states. [2018-07-25 08:46:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:52,474 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:46:52,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:46:52,475 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 54 [2018-07-25 08:46:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:52,476 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:46:52,477 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:46:52,478 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=2811, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:46:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:46:52,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:46:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:46:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:46:52,504 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-25 08:46:52,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:52,504 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:46:52,504 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:46:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:46:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:46:52,505 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:52,505 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-25 08:46:52,507 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:52,507 INFO L82 PathProgramCache]: Analyzing trace with hash 130819741, now seen corresponding path program 26 times [2018-07-25 08:46:52,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:52,843 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:52,843 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:46:52,843 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:46:52,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:46:52,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:46:52,846 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 31 states. [2018-07-25 08:46:53,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:53,623 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:46:53,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:46:53,624 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 56 [2018-07-25 08:46:53,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:53,625 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:46:53,625 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:46:53,626 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=3027, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:46:53,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:46:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:46:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:46:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:46:53,653 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-25 08:46:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:53,653 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:46:53,653 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:46:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:46:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:46:53,654 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:53,654 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-25 08:46:53,654 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:53,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1163652505, now seen corresponding path program 27 times [2018-07-25 08:46:53,655 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:53,943 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:53,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:46:53,944 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:46:53,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:46:53,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=930, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:46:53,945 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 32 states. [2018-07-25 08:46:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:54,674 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:46:54,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:46:54,675 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 58 [2018-07-25 08:46:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:54,675 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:46:54,675 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:46:54,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=3251, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:46:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:46:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:46:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:46:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:46:54,705 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-25 08:46:54,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:54,706 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:46:54,706 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:46:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:46:54,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:46:54,706 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:54,707 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-25 08:46:54,707 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:54,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1578493333, now seen corresponding path program 28 times [2018-07-25 08:46:54,707 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:55,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:55,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:46:55,016 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:46:55,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:46:55,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=992, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:46:55,017 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 33 states. [2018-07-25 08:46:55,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:55,761 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:46:55,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:46:55,761 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 60 [2018-07-25 08:46:55,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:55,762 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:46:55,762 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:46:55,764 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=3483, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:46:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:46:55,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:46:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:46:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:46:55,797 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-25 08:46:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:55,797 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:46:55,797 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:46:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:46:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:46:55,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:55,798 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-25 08:46:55,798 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:55,799 INFO L82 PathProgramCache]: Analyzing trace with hash 808570513, now seen corresponding path program 29 times [2018-07-25 08:46:55,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:56,115 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:56,115 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:46:56,116 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:46:56,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:46:56,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=1056, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:46:56,117 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 34 states. [2018-07-25 08:46:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:56,948 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:46:56,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:46:56,948 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 62 [2018-07-25 08:46:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:56,949 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:46:56,949 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:46:56,952 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=3723, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:46:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:46:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:46:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:46:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:46:56,978 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-25 08:46:56,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:56,979 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:46:56,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:46:56,979 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:46:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:46:56,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:56,980 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-25 08:46:56,980 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:56,980 INFO L82 PathProgramCache]: Analyzing trace with hash -352884595, now seen corresponding path program 30 times [2018-07-25 08:46:56,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:57,297 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:57,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:46:57,298 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:46:57,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:46:57,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=1122, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:46:57,299 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 35 states. [2018-07-25 08:46:58,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:58,085 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:46:58,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:46:58,085 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 64 [2018-07-25 08:46:58,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:58,086 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:46:58,086 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:46:58,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=3971, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:46:58,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:46:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:46:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:46:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:46:58,118 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-25 08:46:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:58,119 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:46:58,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:46:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:46:58,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:46:58,119 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:58,120 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-25 08:46:58,120 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:58,120 INFO L82 PathProgramCache]: Analyzing trace with hash 180253577, now seen corresponding path program 31 times [2018-07-25 08:46:58,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:58,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:58,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:46:58,470 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:46:58,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:46:58,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=1190, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:46:58,472 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 36 states. [2018-07-25 08:46:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:59,303 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:46:59,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:46:59,303 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 66 [2018-07-25 08:46:59,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:59,304 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:46:59,304 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:46:59,306 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=4227, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:46:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:46:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:46:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:46:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:46:59,335 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-25 08:46:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:59,335 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:46:59,335 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:46:59,336 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:46:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:46:59,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:59,337 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-25 08:46:59,337 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:59,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1424928645, now seen corresponding path program 32 times [2018-07-25 08:46:59,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:59,776 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:59,777 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:46:59,777 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:46:59,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:46:59,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=1260, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:46:59,781 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 37 states. [2018-07-25 08:47:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:00,646 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:47:00,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:47:00,646 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 68 [2018-07-25 08:47:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:00,647 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:47:00,647 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:47:00,648 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=4491, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:47:00,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:47:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:47:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:47:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:47:00,680 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-25 08:47:00,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:00,680 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:47:00,680 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:47:00,680 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:47:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:47:00,681 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:00,681 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-25 08:47:00,681 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:00,682 INFO L82 PathProgramCache]: Analyzing trace with hash -738206591, now seen corresponding path program 33 times [2018-07-25 08:47:00,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:01,006 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:01,007 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:47:01,007 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:47:01,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:47:01,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1332, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:47:01,008 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 38 states. [2018-07-25 08:47:01,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:01,856 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:47:01,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:47:01,856 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 70 [2018-07-25 08:47:01,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:01,857 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:47:01,858 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:47:01,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=4763, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:47:01,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:47:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:47:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:47:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:47:01,890 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-25 08:47:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:01,891 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:47:01,891 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:47:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:47:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:47:01,892 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:01,892 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-25 08:47:01,892 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:01,892 INFO L82 PathProgramCache]: Analyzing trace with hash -746997123, now seen corresponding path program 34 times [2018-07-25 08:47:01,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:02,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:02,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:47:02,239 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:47:02,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:47:02,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1406, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:47:02,240 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 39 states. [2018-07-25 08:47:03,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:03,129 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:47:03,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:47:03,129 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 72 [2018-07-25 08:47:03,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:03,130 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:47:03,130 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:47:03,133 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=5043, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:47:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:47:03,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:47:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:47:03,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:47:03,163 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-25 08:47:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:03,164 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:47:03,164 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:47:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:47:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:47:03,164 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:03,165 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-25 08:47:03,165 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:03,165 INFO L82 PathProgramCache]: Analyzing trace with hash -604763783, now seen corresponding path program 35 times [2018-07-25 08:47:03,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:03,495 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:03,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:47:03,495 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:47:03,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:47:03,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1482, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:47:03,496 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 40 states. [2018-07-25 08:47:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:04,365 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:47:04,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:47:04,366 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 74 [2018-07-25 08:47:04,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:04,366 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:47:04,367 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:47:04,368 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=219, Invalid=5331, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:47:04,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:47:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:47:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:47:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:47:04,401 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-25 08:47:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:04,401 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:47:04,401 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:47:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:47:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:47:04,402 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:04,402 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-25 08:47:04,402 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:04,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1357477515, now seen corresponding path program 36 times [2018-07-25 08:47:04,403 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:04,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:04,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:47:04,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:47:04,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:47:04,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1560, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:47:04,767 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 41 states. [2018-07-25 08:47:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:05,701 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:47:05,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:47:05,701 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 76 [2018-07-25 08:47:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:05,702 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:47:05,702 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:47:05,704 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=5627, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:47:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:47:05,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:47:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:47:05,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:47:05,738 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-25 08:47:05,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:05,739 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:47:05,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:47:05,739 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:47:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:47:05,741 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:05,741 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-25 08:47:05,742 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:05,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1134099057, now seen corresponding path program 37 times [2018-07-25 08:47:05,742 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:06,195 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:06,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:47:06,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:47:06,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:47:06,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1640, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:47:06,197 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 42 states. [2018-07-25 08:47:07,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:07,203 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:47:07,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:47:07,203 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 78 [2018-07-25 08:47:07,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:07,204 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:47:07,204 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:47:07,205 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=231, Invalid=5931, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:47:07,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:47:07,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:47:07,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:47:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:47:07,236 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-25 08:47:07,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:07,237 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:47:07,237 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:47:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:47:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:47:07,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:07,238 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-25 08:47:07,238 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1052566419, now seen corresponding path program 38 times [2018-07-25 08:47:07,238 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:07,607 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:07,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:47:07,608 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:47:07,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:47:07,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1722, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:47:07,609 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 43 states. [2018-07-25 08:47:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:08,460 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:47:08,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:47:08,460 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 80 [2018-07-25 08:47:08,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:08,461 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:47:08,461 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:47:08,463 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=237, Invalid=6243, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:47:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:47:08,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:47:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:47:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:47:08,495 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-25 08:47:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:08,496 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:47:08,496 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:47:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:47:08,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:47:08,497 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:08,497 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-25 08:47:08,497 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:08,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2095886185, now seen corresponding path program 39 times [2018-07-25 08:47:08,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:08,878 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:08,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:47:08,879 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:47:08,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:47:08,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1806, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:47:08,880 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 44 states. [2018-07-25 08:47:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:09,943 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:47:09,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:47:09,943 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 82 [2018-07-25 08:47:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:09,944 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:47:09,944 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:47:09,946 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=243, Invalid=6563, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:47:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:47:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:47:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:47:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:47:09,978 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-25 08:47:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:09,979 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:47:09,979 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:47:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:47:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:47:09,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:09,980 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-25 08:47:09,980 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:09,980 INFO L82 PathProgramCache]: Analyzing trace with hash -193105051, now seen corresponding path program 40 times [2018-07-25 08:47:09,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:10,372 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:10,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:47:10,373 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:47:10,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:47:10,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:47:10,374 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 45 states. [2018-07-25 08:47:11,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:11,329 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:47:11,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:47:11,330 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 84 [2018-07-25 08:47:11,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:11,330 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:47:11,331 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:47:11,332 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=6891, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:47:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:47:11,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:47:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:47:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:47:11,366 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-25 08:47:11,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:11,367 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:47:11,367 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:47:11,367 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:47:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:47:11,368 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:11,368 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-25 08:47:11,368 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:11,368 INFO L82 PathProgramCache]: Analyzing trace with hash -890427295, now seen corresponding path program 41 times [2018-07-25 08:47:11,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:11,784 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:11,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:47:11,785 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:47:11,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:47:11,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1980, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:47:11,786 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 46 states. [2018-07-25 08:47:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:12,752 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:47:12,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:47:12,752 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 86 [2018-07-25 08:47:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:12,753 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:47:12,753 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:47:12,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=7227, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:47:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:47:12,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:47:12,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:47:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:47:12,810 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-25 08:47:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:12,810 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:47:12,810 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:47:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:47:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:47:12,811 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:12,811 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-25 08:47:12,811 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:12,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1002205603, now seen corresponding path program 42 times [2018-07-25 08:47:12,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:13,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:13,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:47:13,186 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:47:13,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:47:13,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=2070, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:47:13,187 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 47 states. [2018-07-25 08:47:14,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:14,030 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:47:14,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:47:14,030 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 88 [2018-07-25 08:47:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:14,031 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:47:14,031 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:47:14,032 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=7571, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:47:14,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:47:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:47:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:47:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:47:14,070 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-25 08:47:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:14,070 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:47:14,070 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:47:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:47:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:47:14,071 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:14,071 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-25 08:47:14,071 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:14,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1046977191, now seen corresponding path program 43 times [2018-07-25 08:47:14,072 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:14,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:14,510 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:47:14,510 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:47:14,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:47:14,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=2162, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:47:14,511 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 48 states. [2018-07-25 08:47:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:15,426 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:47:15,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:47:15,427 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 90 [2018-07-25 08:47:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:15,428 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:47:15,428 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:47:15,429 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=7923, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:47:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:47:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:47:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:47:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:47:15,463 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-25 08:47:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:15,464 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:47:15,464 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:47:15,464 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:47:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:47:15,465 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:15,465 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-25 08:47:15,465 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:15,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1122800299, now seen corresponding path program 44 times [2018-07-25 08:47:15,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:15,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:15,903 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:47:15,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:47:15,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:47:15,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=2256, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:47:15,904 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 49 states. [2018-07-25 08:47:16,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:16,905 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:47:16,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:47:16,905 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 92 [2018-07-25 08:47:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:16,906 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:47:16,907 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:47:16,908 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=8283, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:47:16,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:47:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:47:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:47:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:47:16,941 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-25 08:47:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:16,942 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:47:16,942 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:47:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:47:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:47:16,943 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:16,943 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-25 08:47:16,943 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:16,943 INFO L82 PathProgramCache]: Analyzing trace with hash -974363055, now seen corresponding path program 45 times [2018-07-25 08:47:16,943 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:17,441 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:17,441 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:47:17,441 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:47:17,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:47:17,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=2352, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:47:17,445 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 50 states. [2018-07-25 08:47:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:18,665 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:47:18,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:47:18,665 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 94 [2018-07-25 08:47:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:18,666 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:47:18,666 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:47:18,668 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=279, Invalid=8651, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:47:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:47:18,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:47:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:47:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:47:18,734 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-25 08:47:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:18,734 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:47:18,735 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:47:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:47:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:47:18,735 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:18,735 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-25 08:47:18,736 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:18,736 INFO L82 PathProgramCache]: Analyzing trace with hash -60092339, now seen corresponding path program 46 times [2018-07-25 08:47:18,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:19,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:19,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:47:19,091 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:47:19,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:47:19,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2450, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:47:19,092 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 51 states. [2018-07-25 08:47:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:20,089 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:47:20,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:47:20,090 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 96 [2018-07-25 08:47:20,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:20,090 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:47:20,091 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:47:20,092 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=9027, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:47:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:47:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:47:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:47:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:47:20,133 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-25 08:47:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:20,133 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:47:20,133 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:47:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:47:20,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:47:20,134 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:20,134 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-25 08:47:20,134 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:20,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1914229943, now seen corresponding path program 47 times [2018-07-25 08:47:20,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:20,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:20,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:47:20,513 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:47:20,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:47:20,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=2550, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:47:20,514 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 52 states. [2018-07-25 08:47:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:21,567 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:47:21,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:47:21,567 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 98 [2018-07-25 08:47:21,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:21,568 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:47:21,568 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:47:21,569 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=291, Invalid=9411, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:47:21,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:47:21,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:47:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:47:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:47:21,600 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-25 08:47:21,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:21,601 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:47:21,601 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:47:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:47:21,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:47:21,601 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:21,601 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-25 08:47:21,602 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:21,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1329039547, now seen corresponding path program 48 times [2018-07-25 08:47:21,602 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:21,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:21,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:47:21,982 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:47:21,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:47:21,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2652, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:47:21,983 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 53 states. [2018-07-25 08:47:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:23,229 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:47:23,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:47:23,229 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 100 [2018-07-25 08:47:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:23,230 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:47:23,230 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:47:23,231 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=9803, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:47:23,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:47:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:47:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:47:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:47:23,268 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-25 08:47:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:23,269 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:47:23,269 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:47:23,269 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:47:23,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:47:23,270 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:23,270 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-25 08:47:23,270 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:23,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1601784767, now seen corresponding path program 49 times [2018-07-25 08:47:23,270 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:23,694 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:23,694 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:47:23,694 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:47:23,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:47:23,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=2756, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:47:23,695 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 54 states. [2018-07-25 08:47:24,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,914 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:47:24,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:47:24,915 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 102 [2018-07-25 08:47:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,915 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:47:24,916 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:47:24,916 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=303, Invalid=10203, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:47:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:47:24,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:47:24,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:47:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:47:24,951 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-25 08:47:24,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,952 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:47:24,952 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:47:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:47:24,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:47:24,953 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,953 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-25 08:47:24,953 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1716936131, now seen corresponding path program 50 times [2018-07-25 08:47:24,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:25,394 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:25,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:47:25,394 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:47:25,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:47:25,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:47:25,395 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 55 states. [2018-07-25 08:47:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:26,539 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:47:26,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:47:26,539 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 104 [2018-07-25 08:47:26,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:26,540 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:47:26,540 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:47:26,541 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=309, Invalid=10611, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:47:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:47:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:47:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:47:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:47:26,588 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-25 08:47:26,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:26,588 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:47:26,588 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:47:26,588 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:47:26,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:47:26,589 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:26,589 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-25 08:47:26,590 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:26,590 INFO L82 PathProgramCache]: Analyzing trace with hash -708247239, now seen corresponding path program 51 times [2018-07-25 08:47:26,590 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:27,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:27,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:47:27,058 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:47:27,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:47:27,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2970, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:47:27,059 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 56 states. [2018-07-25 08:47:28,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:28,311 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:47:28,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:47:28,312 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 106 [2018-07-25 08:47:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:28,312 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:47:28,313 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:47:28,313 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=11027, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:47:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:47:28,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:47:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:47:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:47:28,354 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-25 08:47:28,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:28,354 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:47:28,354 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:47:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:47:28,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:47:28,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:28,355 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-25 08:47:28,355 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:28,356 INFO L82 PathProgramCache]: Analyzing trace with hash -2020830923, now seen corresponding path program 52 times [2018-07-25 08:47:28,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:28,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:28,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:47:28,839 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:47:28,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:47:28,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=3080, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:47:28,840 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 57 states. [2018-07-25 08:47:30,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:30,109 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:47:30,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:47:30,109 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 108 [2018-07-25 08:47:30,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:30,110 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:47:30,110 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:47:30,111 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=321, Invalid=11451, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:47:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:47:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:47:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:47:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:47:30,163 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-25 08:47:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:30,164 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:47:30,164 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:47:30,164 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:47:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:47:30,165 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:30,165 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-25 08:47:30,165 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:30,165 INFO L82 PathProgramCache]: Analyzing trace with hash -693366223, now seen corresponding path program 53 times [2018-07-25 08:47:30,165 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:30,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:30,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:30,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:47:30,784 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:47:30,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:47:30,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=3192, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:47:30,785 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 58 states. [2018-07-25 08:47:32,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:32,093 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:47:32,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:47:32,093 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 110 [2018-07-25 08:47:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:32,094 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:47:32,094 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:47:32,095 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=327, Invalid=11883, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:47:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:47:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:47:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:47:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:47:32,133 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-25 08:47:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:32,134 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:47:32,134 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:47:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:47:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:47:32,135 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:32,135 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-25 08:47:32,135 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:32,135 INFO L82 PathProgramCache]: Analyzing trace with hash -605076435, now seen corresponding path program 54 times [2018-07-25 08:47:32,136 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:32,698 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:32,698 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:47:32,698 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:47:32,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:47:32,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=3306, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:47:32,699 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 59 states. [2018-07-25 08:47:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:34,063 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:47:34,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:47:34,063 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 112 [2018-07-25 08:47:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:34,064 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:47:34,064 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:47:34,066 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=333, Invalid=12323, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:47:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:47:34,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:47:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:47:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:47:34,108 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-25 08:47:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:34,108 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:47:34,109 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:47:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:47:34,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:47:34,109 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:34,110 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-25 08:47:34,110 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1657936087, now seen corresponding path program 55 times [2018-07-25 08:47:34,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:34,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:34,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:47:34,622 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:47:34,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:47:34,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=3422, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:47:34,623 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 60 states. [2018-07-25 08:47:35,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:35,976 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:47:35,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:47:35,976 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 114 [2018-07-25 08:47:35,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:35,977 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:47:35,977 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:47:35,978 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=339, Invalid=12771, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:47:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:47:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:47:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:47:36,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:47:36,026 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-25 08:47:36,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:36,027 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:47:36,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:47:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:47:36,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:47:36,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:36,028 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-25 08:47:36,028 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:36,028 INFO L82 PathProgramCache]: Analyzing trace with hash 156220197, now seen corresponding path program 56 times [2018-07-25 08:47:36,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:36,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:36,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:47:36,650 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:47:36,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:47:36,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=3540, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:47:36,651 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 61 states. [2018-07-25 08:47:38,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:38,252 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:47:38,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:47:38,252 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 116 [2018-07-25 08:47:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:38,253 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:47:38,253 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:47:38,254 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=345, Invalid=13227, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:47:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:47:38,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:47:38,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:47:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:47:38,297 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-25 08:47:38,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:38,298 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:47:38,298 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:47:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:47:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:47:38,299 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:38,299 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-25 08:47:38,299 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:38,299 INFO L82 PathProgramCache]: Analyzing trace with hash -196313055, now seen corresponding path program 57 times [2018-07-25 08:47:38,299 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:38,858 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:38,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:47:38,859 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:47:38,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:47:38,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=3660, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:47:38,860 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 62 states. [2018-07-25 08:47:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:40,338 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:47:40,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:47:40,338 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 118 [2018-07-25 08:47:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:40,339 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:47:40,339 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:47:40,341 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=13691, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:47:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:47:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:47:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:47:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:47:40,388 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-25 08:47:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:40,389 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:47:40,389 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:47:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:47:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:47:40,389 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:40,389 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-25 08:47:40,390 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:40,390 INFO L82 PathProgramCache]: Analyzing trace with hash 321648157, now seen corresponding path program 58 times [2018-07-25 08:47:40,390 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:41,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:41,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:47:41,057 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:47:41,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:47:41,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3782, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:47:41,058 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 63 states. [2018-07-25 08:47:42,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:42,538 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:47:42,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:47:42,538 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 120 [2018-07-25 08:47:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:42,539 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:47:42,539 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:47:42,540 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=357, Invalid=14163, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:47:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:47:42,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:47:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:47:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:47:42,588 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-25 08:47:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:42,589 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:47:42,589 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:47:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:47:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:47:42,589 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:42,589 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-25 08:47:42,590 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:42,590 INFO L82 PathProgramCache]: Analyzing trace with hash -133833447, now seen corresponding path program 59 times [2018-07-25 08:47:42,590 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:43,259 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:43,259 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:47:43,260 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:47:43,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:47:43,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=3906, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:47:43,261 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 64 states. [2018-07-25 08:47:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:44,935 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:47:44,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:47:44,936 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 122 [2018-07-25 08:47:44,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:44,936 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:47:44,936 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:47:44,937 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=363, Invalid=14643, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:47:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:47:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:47:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:47:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:47:44,997 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-25 08:47:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:44,997 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:47:44,997 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:47:44,997 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:47:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:47:44,998 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:44,998 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-25 08:47:44,999 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:44,999 INFO L82 PathProgramCache]: Analyzing trace with hash 235009301, now seen corresponding path program 60 times [2018-07-25 08:47:44,999 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:45,633 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:45,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:47:45,633 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:47:45,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:47:45,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=4032, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:47:45,634 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 65 states. [2018-07-25 08:47:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:47,261 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:47:47,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:47:47,262 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 124 [2018-07-25 08:47:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:47,262 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:47:47,263 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:47:47,264 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=369, Invalid=15131, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:47:47,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:47:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:47:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:47:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:47:47,318 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-25 08:47:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:47,319 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:47:47,319 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:47:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:47:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:47:47,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:47,319 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-25 08:47:47,320 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:47,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1789395439, now seen corresponding path program 61 times [2018-07-25 08:47:47,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:47,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:47,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:47:47,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:47:47,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:47:47,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=4160, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:47:47,961 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 66 states. [2018-07-25 08:47:49,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:49,714 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:47:49,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:47:49,714 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 126 [2018-07-25 08:47:49,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:49,715 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:47:49,715 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:47:49,716 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=375, Invalid=15627, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:47:49,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:47:49,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:47:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:47:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:47:49,768 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-25 08:47:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:49,768 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:47:49,769 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:47:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:47:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:47:49,769 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:49,770 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-25 08:47:49,770 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:49,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1622165491, now seen corresponding path program 62 times [2018-07-25 08:47:49,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:50,429 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:50,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:47:50,430 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:47:50,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:47:50,430 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=4290, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:47:50,431 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 67 states. [2018-07-25 08:47:52,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:52,159 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:47:52,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:47:52,160 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 128 [2018-07-25 08:47:52,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:52,160 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:47:52,160 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:47:52,162 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=381, Invalid=16131, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:47:52,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:47:52,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:47:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:47:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:47:52,225 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-25 08:47:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:52,226 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:47:52,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:47:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:47:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:47:52,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:52,228 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-25 08:47:52,229 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:52,229 INFO L82 PathProgramCache]: Analyzing trace with hash 172024585, now seen corresponding path program 63 times [2018-07-25 08:47:52,229 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:53,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:53,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:47:53,075 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:47:53,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:47:53,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=4422, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:47:53,076 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 68 states. [2018-07-25 08:47:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:54,904 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:47:54,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:47:54,904 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 130 [2018-07-25 08:47:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:54,905 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:47:54,905 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:47:54,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=387, Invalid=16643, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:47:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:47:54,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:47:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:47:54,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:47:54,960 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-25 08:47:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:54,960 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:47:54,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:47:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:47:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:47:54,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:54,961 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-25 08:47:54,961 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2106801925, now seen corresponding path program 64 times [2018-07-25 08:47:54,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:55,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:55,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:47:55,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:47:55,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:47:55,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=4556, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:47:55,677 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 69 states. [2018-07-25 08:47:57,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:57,455 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:47:57,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:47:57,455 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 132 [2018-07-25 08:47:57,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:57,456 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:47:57,456 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:47:57,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=393, Invalid=17163, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:47:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:47:57,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:47:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:47:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:47:57,514 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-25 08:47:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:57,514 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:47:57,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:47:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:47:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:47:57,515 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:57,515 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-25 08:47:57,515 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:57,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1706986497, now seen corresponding path program 65 times [2018-07-25 08:47:57,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:58,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:58,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:47:58,254 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:47:58,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:47:58,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=4692, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:47:58,255 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 70 states. [2018-07-25 08:48:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:00,295 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:48:00,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:48:00,295 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 134 [2018-07-25 08:48:00,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:00,296 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:48:00,296 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:48:00,298 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=399, Invalid=17691, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:48:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:48:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:48:00,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:48:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:48:00,416 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-25 08:48:00,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:00,416 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:48:00,416 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:48:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:48:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:48:00,418 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:00,418 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-25 08:48:00,418 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:00,418 INFO L82 PathProgramCache]: Analyzing trace with hash -263550467, now seen corresponding path program 66 times [2018-07-25 08:48:00,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:01,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:01,468 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:48:01,468 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:48:01,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:48:01,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=4830, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:48:01,469 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 71 states. [2018-07-25 08:48:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:03,375 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:48:03,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:48:03,375 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 136 [2018-07-25 08:48:03,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:03,376 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:48:03,376 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:48:03,378 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2211 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=405, Invalid=18227, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:48:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:48:03,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:48:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:48:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:48:03,441 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-25 08:48:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:03,442 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:48:03,442 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:48:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:48:03,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:48:03,443 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:03,443 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-25 08:48:03,443 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:03,443 INFO L82 PathProgramCache]: Analyzing trace with hash 131004665, now seen corresponding path program 67 times [2018-07-25 08:48:03,444 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:04,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:04,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:48:04,279 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:48:04,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:48:04,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=4970, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:48:04,280 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 72 states. [2018-07-25 08:48:06,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:06,355 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:48:06,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:48:06,356 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 138 [2018-07-25 08:48:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:06,356 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:48:06,357 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:48:06,358 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2278 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=411, Invalid=18771, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:48:06,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:48:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:48:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:48:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:48:06,418 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-25 08:48:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:06,418 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:48:06,418 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:48:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:48:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:48:06,419 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:06,419 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-25 08:48:06,419 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:06,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1341364469, now seen corresponding path program 68 times [2018-07-25 08:48:06,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:07,224 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:07,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:48:07,224 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:48:07,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:48:07,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=5112, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:48:07,225 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 73 states. [2018-07-25 08:48:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:09,317 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:48:09,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:48:09,317 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 140 [2018-07-25 08:48:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:09,318 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:48:09,318 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:48:09,319 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=417, Invalid=19323, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:48:09,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:48:09,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:48:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:48:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:48:09,387 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-25 08:48:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:09,387 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:48:09,387 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:48:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:48:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:48:09,388 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:09,388 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-25 08:48:09,388 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:09,389 INFO L82 PathProgramCache]: Analyzing trace with hash 560998897, now seen corresponding path program 69 times [2018-07-25 08:48:09,389 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:10,220 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:10,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:48:10,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:48:10,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:48:10,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=5256, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:48:10,221 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 74 states. [2018-07-25 08:48:12,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:12,262 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:48:12,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:48:12,262 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 142 [2018-07-25 08:48:12,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:12,263 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:48:12,263 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:48:12,265 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2415 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=423, Invalid=19883, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:48:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:48:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:48:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:48:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:48:12,357 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-25 08:48:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:12,357 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:48:12,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:48:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:48:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:48:12,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:12,358 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-25 08:48:12,359 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:12,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2046006291, now seen corresponding path program 70 times [2018-07-25 08:48:12,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:13,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:13,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:48:13,374 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:48:13,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:48:13,374 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=5402, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:48:13,374 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 75 states. [2018-07-25 08:48:15,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:15,648 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:48:15,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:48:15,648 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 144 [2018-07-25 08:48:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:15,649 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:48:15,649 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:48:15,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2485 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=429, Invalid=20451, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:48:15,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:48:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:48:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:48:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:48:15,718 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-25 08:48:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:15,718 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:48:15,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:48:15,718 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:48:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:48:15,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:15,719 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-25 08:48:15,720 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:15,720 INFO L82 PathProgramCache]: Analyzing trace with hash 882908905, now seen corresponding path program 71 times [2018-07-25 08:48:15,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:16,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:16,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:48:16,550 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:48:16,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:48:16,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=5550, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:48:16,551 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 76 states. [2018-07-25 08:48:18,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:18,708 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:48:18,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:48:18,708 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 146 [2018-07-25 08:48:18,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:18,709 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:48:18,710 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:48:18,711 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=435, Invalid=21027, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:48:18,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:48:18,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:48:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:48:18,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:48:18,782 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-25 08:48:18,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:18,783 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:48:18,783 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:48:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:48:18,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:48:18,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:18,784 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-25 08:48:18,784 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:18,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1928133915, now seen corresponding path program 72 times [2018-07-25 08:48:18,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:19,659 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:19,660 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:48:19,660 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:48:19,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:48:19,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=5700, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:48:19,661 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 77 states. [2018-07-25 08:48:21,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:21,864 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:48:21,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:48:21,864 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 148 [2018-07-25 08:48:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:21,865 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:48:21,865 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:48:21,866 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=441, Invalid=21611, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:48:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:48:21,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:48:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:48:21,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:48:21,937 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-25 08:48:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:21,937 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:48:21,937 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:48:21,938 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:48:21,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:48:21,938 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:21,938 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-25 08:48:21,939 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:21,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1805854751, now seen corresponding path program 73 times [2018-07-25 08:48:21,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:22,848 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:22,848 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:48:22,848 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:48:22,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:48:22,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=5852, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:48:22,849 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 78 states. [2018-07-25 08:48:25,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:25,188 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:48:25,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:48:25,189 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 150 [2018-07-25 08:48:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:25,189 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:48:25,189 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:48:25,191 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2701 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=447, Invalid=22203, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:48:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:48:25,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:48:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:48:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:48:25,260 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-25 08:48:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:25,260 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:48:25,260 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:48:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:48:25,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:48:25,261 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:25,261 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-25 08:48:25,261 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:25,262 INFO L82 PathProgramCache]: Analyzing trace with hash -259695139, now seen corresponding path program 74 times [2018-07-25 08:48:25,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:26,197 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:26,197 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:48:26,198 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:48:26,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:48:26,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=6006, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:48:26,199 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 79 states. [2018-07-25 08:48:28,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:28,526 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:48:28,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:48:28,527 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 152 [2018-07-25 08:48:28,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:28,527 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:48:28,528 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:48:28,529 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2775 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=453, Invalid=22803, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:48:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:48:28,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:48:28,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:48:28,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:48:28,608 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-25 08:48:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:28,608 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:48:28,609 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:48:28,609 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:48:28,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:48:28,609 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:28,609 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-25 08:48:28,610 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:28,610 INFO L82 PathProgramCache]: Analyzing trace with hash -458992423, now seen corresponding path program 75 times [2018-07-25 08:48:28,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:29,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:29,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:48:29,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:48:29,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:48:29,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=6162, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:48:29,599 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 80 states. [2018-07-25 08:48:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:31,950 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:48:31,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:48:31,950 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 154 [2018-07-25 08:48:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:31,951 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:48:31,951 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:48:31,953 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=459, Invalid=23411, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:48:31,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:48:32,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:48:32,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:48:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:48:32,026 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-25 08:48:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:32,026 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:48:32,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:48:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:48:32,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:48:32,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:32,027 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-25 08:48:32,027 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:32,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1289845973, now seen corresponding path program 76 times [2018-07-25 08:48:32,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:33,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:33,034 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:48:33,034 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:48:33,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:48:33,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=6320, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:48:33,034 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 81 states. [2018-07-25 08:48:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:35,405 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:48:35,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:48:35,405 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 156 [2018-07-25 08:48:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:35,406 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:48:35,406 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:48:35,407 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=465, Invalid=24027, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:48:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:48:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:48:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:48:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:48:35,481 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-25 08:48:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:35,481 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:48:35,482 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:48:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:48:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:48:35,482 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:35,483 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-25 08:48:35,483 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:35,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1703635503, now seen corresponding path program 77 times [2018-07-25 08:48:35,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:36,563 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:36,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:48:36,564 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:48:36,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:48:36,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=6480, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:48:36,565 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 82 states. [2018-07-25 08:48:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:38,932 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:48:38,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:48:38,932 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 158 [2018-07-25 08:48:38,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:38,933 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:48:38,933 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:48:38,935 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3003 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=471, Invalid=24651, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:48:38,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:48:39,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:48:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:48:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:48:39,010 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-25 08:48:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:39,010 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:48:39,010 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:48:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:48:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:48:39,011 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:39,011 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-25 08:48:39,012 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:39,012 INFO L82 PathProgramCache]: Analyzing trace with hash -811245619, now seen corresponding path program 78 times [2018-07-25 08:48:39,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:40,055 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:40,055 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:48:40,056 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:48:40,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:48:40,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=6642, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:48:40,057 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 83 states. [2018-07-25 08:48:42,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:42,559 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:48:42,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:48:42,559 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 160 [2018-07-25 08:48:42,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:42,560 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:48:42,560 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:48:42,562 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3081 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=477, Invalid=25283, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:48:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:48:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:48:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:48:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:48:42,641 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-25 08:48:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:42,641 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:48:42,641 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:48:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:48:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:48:42,642 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:42,642 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-25 08:48:42,642 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:42,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2076941001, now seen corresponding path program 79 times [2018-07-25 08:48:42,643 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:43,670 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:43,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:48:43,670 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:48:43,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:48:43,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=6806, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:48:43,671 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 84 states. [2018-07-25 08:48:46,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:46,274 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:48:46,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:48:46,275 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 162 [2018-07-25 08:48:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:46,275 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:48:46,276 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:48:46,277 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=483, Invalid=25923, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:48:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:48:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:48:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:48:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:48:46,350 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-25 08:48:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:46,350 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:48:46,350 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:48:46,351 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:48:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:48:46,351 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:46,351 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-25 08:48:46,351 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:46,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1219557691, now seen corresponding path program 80 times [2018-07-25 08:48:46,352 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:47,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:47,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:48:47,445 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:48:47,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:48:47,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=6972, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:48:47,446 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 85 states. [2018-07-25 08:48:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:50,140 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:48:50,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:48:50,141 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 164 [2018-07-25 08:48:50,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:50,141 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:48:50,142 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:48:50,143 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3240 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=489, Invalid=26571, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:48:50,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:48:50,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:48:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:48:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:48:50,225 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-25 08:48:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:50,226 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:48:50,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:48:50,226 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:48:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:48:50,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:50,227 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-25 08:48:50,227 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:50,227 INFO L82 PathProgramCache]: Analyzing trace with hash 531063745, now seen corresponding path program 81 times [2018-07-25 08:48:50,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:51,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:51,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:48:51,362 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:48:51,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:48:51,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=7140, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:48:51,363 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 86 states. [2018-07-25 08:48:54,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:54,070 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:48:54,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:48:54,071 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 166 [2018-07-25 08:48:54,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:54,072 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:48:54,072 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:48:54,073 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=495, Invalid=27227, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:48:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:48:54,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:48:54,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:48:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:48:54,176 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-25 08:48:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:54,176 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:48:54,176 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:48:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:48:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:48:54,177 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:54,178 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-25 08:48:54,178 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:54,178 INFO L82 PathProgramCache]: Analyzing trace with hash -748916291, now seen corresponding path program 82 times [2018-07-25 08:48:54,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:55,365 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:55,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:48:55,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:48:55,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:48:55,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=7310, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:48:55,366 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 87 states. [2018-07-25 08:48:58,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:58,159 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:48:58,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:48:58,160 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 168 [2018-07-25 08:48:58,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:58,161 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:48:58,161 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:48:58,163 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3403 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=501, Invalid=27891, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:48:58,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:48:58,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:48:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:48:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:48:58,256 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-25 08:48:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:58,257 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:48:58,257 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:48:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:48:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:48:58,258 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:58,258 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-25 08:48:58,258 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:58,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1845883065, now seen corresponding path program 83 times [2018-07-25 08:48:58,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:59,499 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:59,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:48:59,500 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:48:59,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:48:59,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=7482, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:48:59,501 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 88 states. [2018-07-25 08:49:02,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:02,449 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:49:02,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:49:02,449 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 170 [2018-07-25 08:49:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:02,450 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:49:02,450 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:49:02,452 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3486 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=507, Invalid=28563, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:49:02,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:49:02,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:49:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:49:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:49:02,549 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-25 08:49:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:02,549 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:49:02,549 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:49:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:49:02,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:49:02,550 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:02,550 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-25 08:49:02,550 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:02,551 INFO L82 PathProgramCache]: Analyzing trace with hash 72065205, now seen corresponding path program 84 times [2018-07-25 08:49:02,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:03,885 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:03,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:49:03,886 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:49:03,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:49:03,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=7656, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:49:03,887 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 89 states. [2018-07-25 08:49:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:06,877 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:49:06,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:49:06,877 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 172 [2018-07-25 08:49:06,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:06,878 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:49:06,878 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:49:06,880 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=513, Invalid=29243, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:49:06,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:49:06,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:49:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:49:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:49:06,963 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-25 08:49:06,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:06,964 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:49:06,964 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:49:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:49:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:49:06,965 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:06,965 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-25 08:49:06,965 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash 535118257, now seen corresponding path program 85 times [2018-07-25 08:49:06,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:08,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:08,243 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:49:08,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:49:08,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:49:08,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=7832, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:49:08,245 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 90 states. [2018-07-25 08:49:11,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:11,245 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:49:11,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:49:11,245 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 174 [2018-07-25 08:49:11,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:11,246 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:49:11,246 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:49:11,249 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3655 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=519, Invalid=29931, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:49:11,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:49:11,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:49:11,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:49:11,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:49:11,342 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-25 08:49:11,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:11,342 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:49:11,343 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:49:11,343 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:49:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:49:11,343 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:11,344 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-25 08:49:11,344 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:11,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1147497555, now seen corresponding path program 86 times [2018-07-25 08:49:11,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:12,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:12,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:49:12,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:49:12,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:49:12,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=8010, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:49:12,704 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 91 states. [2018-07-25 08:49:15,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:15,836 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:49:15,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:49:15,836 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 176 [2018-07-25 08:49:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:15,837 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:49:15,837 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:49:15,838 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3741 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=525, Invalid=30627, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:49:15,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:49:15,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:49:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:49:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:49:15,938 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-25 08:49:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:15,939 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:49:15,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:49:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:49:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:49:15,939 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:15,939 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-25 08:49:15,940 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:15,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1061377705, now seen corresponding path program 87 times [2018-07-25 08:49:15,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:17,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:17,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:49:17,249 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:49:17,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:49:17,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=8190, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:49:17,250 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 92 states. [2018-07-25 08:49:20,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:20,405 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:49:20,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:49:20,405 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 178 [2018-07-25 08:49:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:20,406 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:49:20,406 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:49:20,408 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3828 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=531, Invalid=31331, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:49:20,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:49:20,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:49:20,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:49:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:49:20,516 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-25 08:49:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:20,516 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:49:20,516 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:49:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:49:20,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:49:20,517 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:20,518 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-25 08:49:20,518 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:20,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2076658341, now seen corresponding path program 88 times [2018-07-25 08:49:20,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:21,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:21,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:49:21,809 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:49:21,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:49:21,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=8372, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:49:21,810 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 93 states. [2018-07-25 08:49:24,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:24,958 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:49:24,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:49:24,958 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 180 [2018-07-25 08:49:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:24,959 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:49:24,959 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:49:24,960 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3916 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=537, Invalid=32043, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:49:24,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:49:25,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:49:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:49:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:49:25,062 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-25 08:49:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:25,062 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:49:25,062 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:49:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:49:25,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:49:25,063 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:25,063 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-25 08:49:25,064 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:25,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1491193951, now seen corresponding path program 89 times [2018-07-25 08:49:25,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:26,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:26,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:49:26,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:49:26,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:49:26,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=8556, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:49:26,549 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 94 states. [2018-07-25 08:49:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:29,847 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:49:29,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:49:29,848 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 182 [2018-07-25 08:49:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:29,848 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:49:29,848 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:49:29,850 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4005 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=543, Invalid=32763, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:49:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:49:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:49:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:49:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:49:29,943 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-25 08:49:29,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:29,943 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:49:29,944 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:49:29,944 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:49:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:49:29,944 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:29,944 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-25 08:49:29,945 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1481622941, now seen corresponding path program 90 times [2018-07-25 08:49:29,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:31,354 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:31,354 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:49:31,355 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:49:31,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:49:31,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=8742, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:49:31,355 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 95 states. [2018-07-25 08:49:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:34,721 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:49:34,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:49:34,721 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 184 [2018-07-25 08:49:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:34,722 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:49:34,722 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:49:34,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4095 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=549, Invalid=33491, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:49:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:49:34,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:49:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:49:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:49:34,827 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-25 08:49:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:34,828 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:49:34,828 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:49:34,828 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:49:34,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:49:34,829 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:34,829 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-25 08:49:34,829 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:34,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2089562983, now seen corresponding path program 91 times [2018-07-25 08:49:34,829 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:36,318 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:36,318 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:49:36,318 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:49:36,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:49:36,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=8930, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:49:36,319 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 96 states. [2018-07-25 08:49:39,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:39,795 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:49:39,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:49:39,796 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 186 [2018-07-25 08:49:39,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:39,796 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:49:39,796 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:49:39,798 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4186 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=555, Invalid=34227, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:49:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:49:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:49:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:49:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:49:39,903 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-25 08:49:39,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:39,904 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:49:39,904 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:49:39,904 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:49:39,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:49:39,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:39,905 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-25 08:49:39,905 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:39,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1974600853, now seen corresponding path program 92 times [2018-07-25 08:49:39,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:41,490 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:41,490 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:49:41,491 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:49:41,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:49:41,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=9120, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:49:41,491 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 97 states. [2018-07-25 08:49:45,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:45,082 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:49:45,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:49:45,082 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 188 [2018-07-25 08:49:45,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:45,083 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:49:45,083 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:49:45,085 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4278 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=561, Invalid=34971, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:49:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:49:45,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:49:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:49:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:49:45,197 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-25 08:49:45,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:45,198 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:49:45,198 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:49:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:49:45,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:49:45,198 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:45,199 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-25 08:49:45,199 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:45,199 INFO L82 PathProgramCache]: Analyzing trace with hash -784192111, now seen corresponding path program 93 times [2018-07-25 08:49:45,199 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:46,776 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:46,776 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:49:46,776 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:49:46,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:49:46,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=9312, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:49:46,777 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 98 states. [2018-07-25 08:49:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:50,384 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:49:50,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:49:50,384 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 190 [2018-07-25 08:49:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:50,385 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:49:50,385 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:49:50,386 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=567, Invalid=35723, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:49:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:49:50,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:49:50,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:49:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:49:50,522 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-25 08:49:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:50,523 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:49:50,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:49:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:49:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:49:50,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:50,524 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-25 08:49:50,524 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:50,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1989408883, now seen corresponding path program 94 times [2018-07-25 08:49:50,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:52,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:52,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:49:52,272 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:49:52,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:49:52,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=9506, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:49:52,273 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 99 states. [2018-07-25 08:49:55,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:55,972 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:49:55,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:49:55,973 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 192 [2018-07-25 08:49:55,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:55,973 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:49:55,973 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:49:55,975 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=573, Invalid=36483, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:49:55,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:49:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:49:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:49:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:49:56,089 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-25 08:49:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:56,089 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:49:56,089 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:49:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:49:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:49:56,090 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:56,090 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-25 08:49:56,091 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:56,091 INFO L82 PathProgramCache]: Analyzing trace with hash -561556855, now seen corresponding path program 95 times [2018-07-25 08:49:56,091 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:57,804 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:57,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:49:57,804 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:49:57,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:49:57,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=9702, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:49:57,805 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 100 states. [2018-07-25 08:50:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:01,656 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:50:01,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:50:01,656 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 194 [2018-07-25 08:50:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:01,657 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:50:01,657 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:50:01,659 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4560 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=579, Invalid=37251, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:50:01,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:50:01,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:50:01,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:50:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:50:01,776 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-25 08:50:01,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:01,777 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:50:01,777 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:50:01,777 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:50:01,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:50:01,778 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:01,778 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-25 08:50:01,778 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:01,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1509674629, now seen corresponding path program 96 times [2018-07-25 08:50:01,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:03,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:03,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:50:03,552 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:50:03,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:50:03,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=9900, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:50:03,553 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 101 states. [2018-07-25 08:50:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:07,427 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:50:07,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:50:07,427 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 196 [2018-07-25 08:50:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:07,428 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:50:07,428 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:50:07,430 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4656 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=585, Invalid=38027, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:50:07,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:50:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:50:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:50:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:50:07,547 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-25 08:50:07,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:07,547 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:50:07,547 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:50:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:50:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:50:07,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:07,548 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-25 08:50:07,548 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:07,548 INFO L82 PathProgramCache]: Analyzing trace with hash -901694591, now seen corresponding path program 97 times [2018-07-25 08:50:07,548 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:09,318 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:09,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:50:09,319 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:50:09,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:50:09,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=10100, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:50:09,320 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 102 states. [2018-07-25 08:50:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:13,269 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:50:13,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:50:13,269 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 198 [2018-07-25 08:50:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:13,270 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:50:13,270 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:50:13,272 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4753 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=591, Invalid=38811, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:50:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:50:13,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:50:13,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:50:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:50:13,393 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-25 08:50:13,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:13,394 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:50:13,394 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:50:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:50:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:50:13,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:13,395 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-25 08:50:13,395 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:13,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1054824829, now seen corresponding path program 98 times [2018-07-25 08:50:13,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:15,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:15,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:50:15,178 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:50:15,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:50:15,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=10302, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:50:15,179 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 103 states. [2018-07-25 08:50:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:19,195 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:50:19,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:50:19,195 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 200 [2018-07-25 08:50:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:19,196 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:50:19,196 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:50:19,199 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4851 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=597, Invalid=39603, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:50:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:50:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:50:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:50:19,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:50:19,323 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-25 08:50:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:19,323 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:50:19,323 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:50:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:50:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:50:19,324 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:19,324 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-25 08:50:19,324 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:19,325 INFO L82 PathProgramCache]: Analyzing trace with hash 74311801, now seen corresponding path program 99 times [2018-07-25 08:50:19,325 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:21,183 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:21,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:50:21,184 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:50:21,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:50:21,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=10506, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:50:21,185 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 104 states. [2018-07-25 08:50:25,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:25,254 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:50:25,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:50:25,254 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 202 [2018-07-25 08:50:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:25,255 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:50:25,255 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:50:25,257 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4950 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=603, Invalid=40403, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:50:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:50:25,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:50:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:50:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:50:25,382 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-25 08:50:25,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:25,382 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:50:25,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:50:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:50:25,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:50:25,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:25,384 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-25 08:50:25,384 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:25,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1600870283, now seen corresponding path program 100 times [2018-07-25 08:50:25,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:27,297 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:27,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:50:27,298 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:50:27,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:50:27,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=10712, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:50:27,298 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 105 states. [2018-07-25 08:50:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:31,427 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:50:31,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:50:31,427 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 204 [2018-07-25 08:50:31,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:31,428 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:50:31,428 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:50:31,429 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5050 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=609, Invalid=41211, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:50:31,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:50:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:50:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:50:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:50:31,561 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-25 08:50:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:31,561 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:50:31,561 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:50:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:50:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:50:31,562 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:31,562 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-25 08:50:31,562 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:31,562 INFO L82 PathProgramCache]: Analyzing trace with hash -838117007, now seen corresponding path program 101 times [2018-07-25 08:50:31,562 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:33,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:33,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:50:33,464 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:50:33,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:50:33,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=10920, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:50:33,465 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 106 states. [2018-07-25 08:50:37,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:37,713 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:50:37,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:50:37,713 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 206 [2018-07-25 08:50:37,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:37,714 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:50:37,714 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:50:37,716 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5151 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=615, Invalid=42027, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:50:37,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:50:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:50:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:50:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:50:37,849 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-25 08:50:37,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:37,849 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:50:37,849 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:50:37,849 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:50:37,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:50:37,850 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:37,850 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-25 08:50:37,850 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:37,851 INFO L82 PathProgramCache]: Analyzing trace with hash 2023340909, now seen corresponding path program 102 times [2018-07-25 08:50:37,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:39,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:39,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:50:39,780 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:50:39,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:50:39,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=11130, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:50:39,781 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 107 states. [2018-07-25 08:50:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:44,145 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:50:44,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:50:44,145 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 208 [2018-07-25 08:50:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:44,146 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:50:44,146 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:50:44,147 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5253 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=621, Invalid=42851, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:50:44,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. Received shutdown request... [2018-07-25 08:50:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:50:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:50:44,288 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:50:44,293 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:50:44,293 INFO L202 PluginConnector]: Adding new model jain_5.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:50:44 BoogieIcfgContainer [2018-07-25 08:50:44,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:50:44,294 INFO L168 Benchmark]: Toolchain (without parser) took 245331.16 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 1.8 GB in the end (delta: -336.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-25 08:50:44,296 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:50:44,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.82 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:50:44,297 INFO L168 Benchmark]: Boogie Preprocessor took 23.39 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:50:44,297 INFO L168 Benchmark]: RCFGBuilder took 213.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:50:44,298 INFO L168 Benchmark]: TraceAbstraction took 245044.40 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 1.8 GB in the end (delta: -347.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-25 08:50:44,300 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.82 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.39 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 213.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245044.40 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 1.8 GB in the end (delta: -347.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 35]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 35). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 244.9s OverallTime, 103 OverallIterations, 103 TraceHistogramMax, 167.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4211 SDtfs, 1480 SDslu, 278245 SDs, 0 SdLazy, 482642 SolverSat, 5457 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10917 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10814 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182104 ImplicationChecksByTransitivity, 80.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=102, 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: 5.7s AutomataMinimizationTime, 103 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 8.1s SatisfiabilityAnalysisTime, 59.3s InterpolantComputationTime, 10918 NumberOfCodeBlocks, 10918 NumberOfCodeBlocksAsserted, 103 NumberOfCheckSat, 10815 ConstructedInterpolants, 0 QuantifiedInterpolants, 22215543 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 103 InterpolantComputations, 1 PerfectInterpolantSequences, 0/364208 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/jain_5.i_2.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-50-44-313.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/jain_5.i_2.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-50-44-313.csv Completed graceful shutdown