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/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:40:28,621 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:40:28,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:40:28,644 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:40:28,644 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:40:28,645 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:40:28,647 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:40:28,649 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:40:28,650 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:40:28,651 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:40:28,652 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:40:28,653 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:40:28,654 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:40:28,655 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:40:28,656 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:40:28,657 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:40:28,658 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:40:28,660 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:40:28,662 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:40:28,663 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:40:28,664 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:40:28,665 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:40:28,668 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:40:28,668 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:40:28,668 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:40:28,669 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:40:28,670 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:40:28,671 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:40:28,672 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:40:28,673 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:40:28,673 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:40:28,674 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:40:28,677 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:40:28,690 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:40:28,691 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:40:28,692 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:40:28,692 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:40:28,692 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:40:28,693 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:40:28,693 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:40:28,693 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:40:28,744 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:40:28,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:40:28,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:40:28,766 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:40:28,767 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:40:28,768 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-07-25 08:40:28,768 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-07-25 08:40:28,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:40:28,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:40:28,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:40:28,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:40:28,842 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:40:28,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/1) ... [2018-07-25 08:40:28,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/1) ... [2018-07-25 08:40:28,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:40:28,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:40:28,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:40:28,888 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:40:28,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/1) ... [2018-07-25 08:40:28,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/1) ... [2018-07-25 08:40:28,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/1) ... [2018-07-25 08:40:28,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/1) ... [2018-07-25 08:40:28,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/1) ... [2018-07-25 08:40:28,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/1) ... [2018-07-25 08:40:28,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/1) ... [2018-07-25 08:40:28,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:40:28,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:40:28,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:40:28,910 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:40:28,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/1) ... [2018-07-25 08:40:29,002 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-07-25 08:40:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:40:29,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:40:29,232 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:40:29,233 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:40:29 BoogieIcfgContainer [2018-07-25 08:40:29,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:40:29,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:40:29,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:40:29,238 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:40:29,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:40:28" (1/2) ... [2018-07-25 08:40:29,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d7e0b and model type fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:40:29, skipping insertion in model container [2018-07-25 08:40:29,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:40:29" (2/2) ... [2018-07-25 08:40:29,245 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-07-25 08:40:29,257 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:40:29,267 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:40:29,324 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:40:29,325 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:40:29,326 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:40:29,326 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:40:29,326 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:40:29,326 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:40:29,327 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:40:29,327 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:40:29,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:40:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 08:40:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:40:29,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:29,357 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 08:40:29,358 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:29,365 INFO L82 PathProgramCache]: Analyzing trace with hash 889618619, now seen corresponding path program 1 times [2018-07-25 08:40:29,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:29,442 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 08:40:29,445 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:40:29,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:40:29,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:40:29,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:40:29,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:40:29,470 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-07-25 08:40:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:29,512 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2018-07-25 08:40:29,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:40:29,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-07-25 08:40:29,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:29,537 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:40:29,539 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:40:29,544 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:40:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:40:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:40:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:40:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 08:40:29,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 08:40:29,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:29,592 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 08:40:29,592 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:40:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 08:40:29,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:40:29,593 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:29,594 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:40:29,594 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:29,595 INFO L82 PathProgramCache]: Analyzing trace with hash 141442743, now seen corresponding path program 1 times [2018-07-25 08:40:29,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:29,637 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 08:40:29,638 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:29,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:40:29,640 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:40:29,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:40:29,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:40:29,642 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-07-25 08:40:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:29,664 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2018-07-25 08:40:29,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:40:29,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-25 08:40:29,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:29,666 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:40:29,666 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:40:29,667 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:40:29,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:40:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:40:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:40:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 08:40:29,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 08:40:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:29,672 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 08:40:29,672 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:40:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 08:40:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:40:29,673 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:29,673 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2018-07-25 08:40:29,673 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:29,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1596035661, now seen corresponding path program 2 times [2018-07-25 08:40:29,674 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:29,711 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 08:40:29,711 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:29,711 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:40:29,712 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:40:29,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:40:29,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:40:29,713 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2018-07-25 08:40:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:29,746 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-07-25 08:40:29,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:40:29,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-07-25 08:40:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:29,750 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:40:29,750 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:40:29,751 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:40:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:40:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:40:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:40:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 08:40:29,758 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-25 08:40:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:29,759 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 08:40:29,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:40:29,759 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 08:40:29,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:40:29,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:29,760 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2018-07-25 08:40:29,760 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:29,761 INFO L82 PathProgramCache]: Analyzing trace with hash -570503761, now seen corresponding path program 3 times [2018-07-25 08:40:29,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:29,843 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 08:40:29,843 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:29,843 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:40:29,844 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:40:29,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:40:29,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:40:29,846 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2018-07-25 08:40:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:29,878 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-07-25 08:40:29,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:40:29,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-07-25 08:40:29,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:29,879 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:40:29,879 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:40:29,880 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:40:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:40:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:40:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:40:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 08:40:29,885 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-25 08:40:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:29,885 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 08:40:29,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:40:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 08:40:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:40:29,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:29,886 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1] [2018-07-25 08:40:29,887 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:29,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1418141355, now seen corresponding path program 4 times [2018-07-25 08:40:29,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:29,940 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 08:40:29,941 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:29,941 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:40:29,941 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:40:29,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:40:29,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:40:29,942 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2018-07-25 08:40:29,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:29,964 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-07-25 08:40:29,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:40:29,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-07-25 08:40:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:29,966 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:40:29,966 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:40:29,967 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:40:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:40:29,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:40:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:40:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-25 08:40:29,972 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-07-25 08:40:29,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:29,972 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-25 08:40:29,972 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:40:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-25 08:40:29,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:40:29,973 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:29,973 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1] [2018-07-25 08:40:29,974 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:29,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1245651111, now seen corresponding path program 5 times [2018-07-25 08:40:29,974 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,042 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 08:40:30,043 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:40:30,043 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:40:30,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:40:30,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:40:30,044 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-07-25 08:40:30,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,077 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-07-25 08:40:30,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:40:30,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:40:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,081 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:40:30,082 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:40:30,082 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:40:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:40:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:40:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:40:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 08:40:30,088 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-07-25 08:40:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,088 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 08:40:30,089 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:40:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 08:40:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:40:30,090 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,090 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1] [2018-07-25 08:40:30,090 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1308716125, now seen corresponding path program 6 times [2018-07-25 08:40:30,091 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,188 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 08:40:30,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:40:30,189 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:40:30,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:40:30,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:40:30,190 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 9 states. [2018-07-25 08:40:30,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,241 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-07-25 08:40:30,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:40:30,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 08:40:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,244 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:40:30,244 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:40:30,247 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:40:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:40:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:40:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:40:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 08:40:30,253 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-25 08:40:30,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,254 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 08:40:30,254 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:40:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 08:40:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:40:30,255 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,255 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1] [2018-07-25 08:40:30,256 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,256 INFO L82 PathProgramCache]: Analyzing trace with hash 665663391, now seen corresponding path program 7 times [2018-07-25 08:40:30,256 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:30,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:40:30,332 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:40:30,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:40:30,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:40:30,335 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2018-07-25 08:40:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,369 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-07-25 08:40:30,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:40:30,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-07-25 08:40:30,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,373 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:40:30,373 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:40:30,374 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:40:30,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:40:30,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:40:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:40:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-25 08:40:30,383 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-07-25 08:40:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,383 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-25 08:40:30,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:40:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-25 08:40:30,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:40:30,385 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,385 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1] [2018-07-25 08:40:30,385 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,386 INFO L82 PathProgramCache]: Analyzing trace with hash -331166565, now seen corresponding path program 8 times [2018-07-25 08:40:30,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,451 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 08:40:30,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:40:30,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:40:30,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:40:30,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:40:30,454 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 11 states. [2018-07-25 08:40:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,474 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-07-25 08:40:30,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:40:30,476 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-07-25 08:40:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,477 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:40:30,477 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:40:30,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:40:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:40:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:40:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:40:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 08:40:30,487 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2018-07-25 08:40:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,487 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 08:40:30,487 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:40:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 08:40:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:40:30,489 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,489 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1] [2018-07-25 08:40:30,489 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,490 INFO L82 PathProgramCache]: Analyzing trace with hash -507047273, now seen corresponding path program 9 times [2018-07-25 08:40:30,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,567 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 08:40:30,568 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,568 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:40:30,568 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:40:30,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:40:30,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:40:30,569 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 12 states. [2018-07-25 08:40:30,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,589 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-07-25 08:40:30,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:40:30,590 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2018-07-25 08:40:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,591 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:40:30,592 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:40:30,592 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:40:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:40:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:40:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:40:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 08:40:30,602 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-25 08:40:30,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,603 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 08:40:30,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:40:30,606 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 08:40:30,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:40:30,606 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,607 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1] [2018-07-25 08:40:30,607 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2024683117, now seen corresponding path program 10 times [2018-07-25 08:40:30,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,695 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 08:40:30,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:40:30,696 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:40:30,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:40:30,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:40:30,697 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 13 states. [2018-07-25 08:40:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,728 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-07-25 08:40:30,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:40:30,728 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-07-25 08:40:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,729 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:40:30,729 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:40:30,730 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:40:30,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:40:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:40:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:40:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-25 08:40:30,736 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-07-25 08:40:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,737 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-25 08:40:30,738 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:40:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-25 08:40:30,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:40:30,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,739 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1] [2018-07-25 08:40:30,739 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,740 INFO L82 PathProgramCache]: Analyzing trace with hash -183848561, now seen corresponding path program 11 times [2018-07-25 08:40:30,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,795 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 08:40:30,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:40:30,797 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:40:30,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:40:30,797 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:40:30,798 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 14 states. [2018-07-25 08:40:30,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,817 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-07-25 08:40:30,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:40:30,818 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2018-07-25 08:40:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,819 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:40:30,819 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:40:30,820 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:40:30,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:40:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:40:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:40:30,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 08:40:30,825 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2018-07-25 08:40:30,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,826 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 08:40:30,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:40:30,826 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 08:40:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:40:30,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,827 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1] [2018-07-25 08:40:30,827 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,828 INFO L82 PathProgramCache]: Analyzing trace with hash -668366197, now seen corresponding path program 12 times [2018-07-25 08:40:30,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:30,881 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 08:40:30,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:30,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:40:30,886 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:40:30,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:40:30,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:40:30,887 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 15 states. [2018-07-25 08:40:30,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,908 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2018-07-25 08:40:30,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:40:30,908 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2018-07-25 08:40:30,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,909 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:40:30,909 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:40:30,910 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:40:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:40:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:40:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:40:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 08:40:30,923 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-07-25 08:40:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:30,923 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 08:40:30,923 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:40:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 08:40:30,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:40:30,927 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:30,927 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1] [2018-07-25 08:40:30,927 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:30,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1861620871, now seen corresponding path program 13 times [2018-07-25 08:40:30,928 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,013 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 08:40:31,013 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:40:31,014 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:40:31,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:40:31,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:40:31,015 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 16 states. [2018-07-25 08:40:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,046 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-07-25 08:40:31,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:40:31,047 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2018-07-25 08:40:31,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,048 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:40:31,048 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:40:31,049 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:40:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:40:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:40:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:40:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-25 08:40:31,055 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-07-25 08:40:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,055 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-25 08:40:31,055 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:40:31,056 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-25 08:40:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:40:31,056 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,057 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1] [2018-07-25 08:40:31,057 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,057 INFO L82 PathProgramCache]: Analyzing trace with hash -2067263613, now seen corresponding path program 14 times [2018-07-25 08:40:31,057 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,127 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 08:40:31,127 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:40:31,128 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:40:31,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:40:31,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:40:31,130 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 17 states. [2018-07-25 08:40:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,152 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-07-25 08:40:31,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:40:31,152 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 34 [2018-07-25 08:40:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,153 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:40:31,153 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:40:31,156 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:40:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:40:31,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:40:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:40:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 08:40:31,169 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-07-25 08:40:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,169 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 08:40:31,170 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:40:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 08:40:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:40:31,171 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,171 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1] [2018-07-25 08:40:31,173 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1845967743, now seen corresponding path program 15 times [2018-07-25 08:40:31,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,254 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 08:40:31,254 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:40:31,255 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:40:31,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:40:31,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:40:31,260 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 18 states. [2018-07-25 08:40:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,286 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-07-25 08:40:31,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:40:31,287 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2018-07-25 08:40:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,287 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:40:31,288 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:40:31,288 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:40:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:40:31,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:40:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:40:31,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 08:40:31,300 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-07-25 08:40:31,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,301 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 08:40:31,301 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:40:31,301 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 08:40:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:40:31,302 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,303 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1] [2018-07-25 08:40:31,303 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,303 INFO L82 PathProgramCache]: Analyzing trace with hash 69949563, now seen corresponding path program 16 times [2018-07-25 08:40:31,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,385 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 08:40:31,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:40:31,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:40:31,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:40:31,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:40:31,388 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 19 states. [2018-07-25 08:40:31,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,408 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-07-25 08:40:31,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:40:31,408 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2018-07-25 08:40:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,409 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:40:31,409 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:40:31,410 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:40:31,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:40:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:40:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:40:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-25 08:40:31,416 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2018-07-25 08:40:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,417 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-25 08:40:31,417 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:40:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-25 08:40:31,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:40:31,418 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,418 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1] [2018-07-25 08:40:31,418 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1581504905, now seen corresponding path program 17 times [2018-07-25 08:40:31,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,530 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 08:40:31,531 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:40:31,533 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:40:31,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:40:31,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:40:31,535 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 20 states. [2018-07-25 08:40:31,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,567 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2018-07-25 08:40:31,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:40:31,568 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2018-07-25 08:40:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,569 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:40:31,569 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:40:31,570 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:40:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:40:31,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:40:31,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:40:31,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 08:40:31,576 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-07-25 08:40:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,576 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 08:40:31,577 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:40:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 08:40:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:40:31,578 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,578 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1] [2018-07-25 08:40:31,579 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,579 INFO L82 PathProgramCache]: Analyzing trace with hash 508650867, now seen corresponding path program 18 times [2018-07-25 08:40:31,579 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,691 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 08:40:31,692 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:40:31,693 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:40:31,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:40:31,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:40:31,695 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 21 states. [2018-07-25 08:40:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,721 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2018-07-25 08:40:31,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:40:31,722 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-07-25 08:40:31,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,723 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:40:31,723 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:40:31,725 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:40:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:40:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:40:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:40:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 08:40:31,735 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-25 08:40:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,735 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 08:40:31,736 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:40:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 08:40:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:40:31,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,737 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1] [2018-07-25 08:40:31,737 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,740 INFO L82 PathProgramCache]: Analyzing trace with hash -896346769, now seen corresponding path program 19 times [2018-07-25 08:40:31,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:31,841 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 08:40:31,841 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:31,841 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:40:31,842 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:40:31,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:40:31,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:40:31,843 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 22 states. [2018-07-25 08:40:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:31,877 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-07-25 08:40:31,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:40:31,878 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2018-07-25 08:40:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:31,879 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:40:31,879 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:40:31,880 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:40:31,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:40:31,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:40:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:40:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-25 08:40:31,892 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2018-07-25 08:40:31,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:31,892 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-25 08:40:31,892 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:40:31,893 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-25 08:40:31,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:40:31,893 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:31,893 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1] [2018-07-25 08:40:31,894 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:31,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1815623275, now seen corresponding path program 20 times [2018-07-25 08:40:31,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,013 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 08:40:32,013 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:40:32,015 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:40:32,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:40:32,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:40:32,016 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 23 states. [2018-07-25 08:40:32,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,047 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-07-25 08:40:32,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:40:32,047 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2018-07-25 08:40:32,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,048 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:40:32,048 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:40:32,049 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:40:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:40:32,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:40:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:40:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 08:40:32,055 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2018-07-25 08:40:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,055 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 08:40:32,055 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:40:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 08:40:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:40:32,056 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,056 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1] [2018-07-25 08:40:32,057 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,057 INFO L82 PathProgramCache]: Analyzing trace with hash 973686887, now seen corresponding path program 21 times [2018-07-25 08:40:32,057 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,195 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 08:40:32,195 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:40:32,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:40:32,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:40:32,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:40:32,197 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 24 states. [2018-07-25 08:40:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,216 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2018-07-25 08:40:32,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:40:32,217 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2018-07-25 08:40:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,217 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:40:32,217 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:40:32,222 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:40:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:40:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:40:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:40:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 08:40:32,233 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-25 08:40:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,233 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 08:40:32,233 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:40:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 08:40:32,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:40:32,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,238 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1] [2018-07-25 08:40:32,238 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,239 INFO L82 PathProgramCache]: Analyzing trace with hash -673330333, now seen corresponding path program 22 times [2018-07-25 08:40:32,239 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,362 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 08:40:32,363 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,363 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:40:32,364 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:40:32,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:40:32,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:40:32,365 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 25 states. [2018-07-25 08:40:32,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,387 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-07-25 08:40:32,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:40:32,388 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 50 [2018-07-25 08:40:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,388 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:40:32,389 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:40:32,389 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:40:32,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:40:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:40:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:40:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-25 08:40:32,394 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-07-25 08:40:32,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,395 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-25 08:40:32,395 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:40:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-25 08:40:32,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:40:32,396 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,396 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1] [2018-07-25 08:40:32,396 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1386053471, now seen corresponding path program 23 times [2018-07-25 08:40:32,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,529 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 08:40:32,529 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:40:32,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:40:32,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:40:32,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:40:32,531 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 26 states. [2018-07-25 08:40:32,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,551 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-07-25 08:40:32,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:40:32,552 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 52 [2018-07-25 08:40:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,552 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:40:32,553 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:40:32,553 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:40:32,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:40:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:40:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:40:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 08:40:32,564 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2018-07-25 08:40:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,564 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 08:40:32,567 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:40:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 08:40:32,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:40:32,568 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,568 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1] [2018-07-25 08:40:32,569 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,569 INFO L82 PathProgramCache]: Analyzing trace with hash 473965659, now seen corresponding path program 24 times [2018-07-25 08:40:32,571 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,710 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 08:40:32,711 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,711 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:40:32,711 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:40:32,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:40:32,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:40:32,712 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 27 states. [2018-07-25 08:40:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,733 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2018-07-25 08:40:32,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:40:32,733 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 54 [2018-07-25 08:40:32,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,734 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:40:32,734 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:40:32,735 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:40:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:40:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:40:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:40:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 08:40:32,742 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-07-25 08:40:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,743 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 08:40:32,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:40:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 08:40:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:40:32,743 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,744 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1] [2018-07-25 08:40:32,744 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash 130906711, now seen corresponding path program 25 times [2018-07-25 08:40:32,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:32,881 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 08:40:32,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:32,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:40:32,882 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:40:32,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:40:32,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:40:32,883 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 28 states. [2018-07-25 08:40:32,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:32,908 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-07-25 08:40:32,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:40:32,908 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2018-07-25 08:40:32,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:32,909 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:40:32,909 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:40:32,910 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:40:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:40:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:40:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:40:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-25 08:40:32,914 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-07-25 08:40:32,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:32,915 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-25 08:40:32,915 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:40:32,915 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-25 08:40:32,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:40:32,916 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:32,916 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1] [2018-07-25 08:40:32,916 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:32,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1163739475, now seen corresponding path program 26 times [2018-07-25 08:40:32,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,083 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 08:40:33,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:40:33,085 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:40:33,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:40:33,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:40:33,087 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 29 states. [2018-07-25 08:40:33,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,121 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2018-07-25 08:40:33,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:40:33,121 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 58 [2018-07-25 08:40:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,122 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:40:33,122 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:40:33,123 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:40:33,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:40:33,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:40:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:40:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 08:40:33,130 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-07-25 08:40:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,131 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 08:40:33,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:40:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 08:40:33,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:40:33,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,132 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1] [2018-07-25 08:40:33,132 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1578580303, now seen corresponding path program 27 times [2018-07-25 08:40:33,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,291 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 08:40:33,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:40:33,292 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:40:33,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:40:33,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:40:33,294 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 30 states. [2018-07-25 08:40:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,322 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-07-25 08:40:33,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:40:33,323 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 60 [2018-07-25 08:40:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,324 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:40:33,324 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:40:33,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:40:33,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:40:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:40:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:40:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 08:40:33,329 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-07-25 08:40:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,330 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 08:40:33,330 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:40:33,330 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 08:40:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:40:33,330 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,331 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1] [2018-07-25 08:40:33,331 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,331 INFO L82 PathProgramCache]: Analyzing trace with hash 808657483, now seen corresponding path program 28 times [2018-07-25 08:40:33,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,536 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 08:40:33,536 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,537 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:40:33,537 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:40:33,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:40:33,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:40:33,538 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 31 states. [2018-07-25 08:40:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,566 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2018-07-25 08:40:33,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:40:33,566 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 62 [2018-07-25 08:40:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,567 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:40:33,567 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:40:33,568 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:40:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:40:33,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:40:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:40:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-25 08:40:33,572 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2018-07-25 08:40:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,572 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-25 08:40:33,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:40:33,572 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-25 08:40:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:40:33,573 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,573 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1] [2018-07-25 08:40:33,573 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,574 INFO L82 PathProgramCache]: Analyzing trace with hash -352797625, now seen corresponding path program 29 times [2018-07-25 08:40:33,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,722 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 08:40:33,722 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,723 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:40:33,723 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:40:33,723 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:40:33,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:40:33,724 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 32 states. [2018-07-25 08:40:33,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,745 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2018-07-25 08:40:33,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:40:33,746 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 64 [2018-07-25 08:40:33,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,747 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:40:33,747 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:40:33,748 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:40:33,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:40:33,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:40:33,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:40:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 08:40:33,753 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-07-25 08:40:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,754 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 08:40:33,754 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:40:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 08:40:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:40:33,755 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,755 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1] [2018-07-25 08:40:33,755 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,755 INFO L82 PathProgramCache]: Analyzing trace with hash 180340547, now seen corresponding path program 30 times [2018-07-25 08:40:33,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,929 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 08:40:33,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,929 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:40:33,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:40:33,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:40:33,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:40:33,931 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 33 states. [2018-07-25 08:40:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:33,964 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2018-07-25 08:40:33,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:40:33,964 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 66 [2018-07-25 08:40:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:33,965 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:40:33,965 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:40:33,966 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:40:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:40:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:40:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:40:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 08:40:33,970 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-25 08:40:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,970 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 08:40:33,970 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:40:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 08:40:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:40:33,971 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,971 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1] [2018-07-25 08:40:33,971 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1425015615, now seen corresponding path program 31 times [2018-07-25 08:40:33,972 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,152 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 08:40:34,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:40:34,153 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:40:34,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:40:34,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:40:34,155 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 34 states. [2018-07-25 08:40:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,184 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-07-25 08:40:34,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:40:34,184 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 68 [2018-07-25 08:40:34,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,185 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:40:34,185 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:40:34,186 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:40:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:40:34,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:40:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:40:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-25 08:40:34,190 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2018-07-25 08:40:34,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,190 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-25 08:40:34,190 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:40:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-25 08:40:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:40:34,191 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,191 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1] [2018-07-25 08:40:34,191 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,191 INFO L82 PathProgramCache]: Analyzing trace with hash -738119621, now seen corresponding path program 32 times [2018-07-25 08:40:34,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,341 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 08:40:34,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:40:34,342 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:40:34,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:40:34,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:40:34,343 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 35 states. [2018-07-25 08:40:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,372 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2018-07-25 08:40:34,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:40:34,373 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 70 [2018-07-25 08:40:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,374 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:40:34,374 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:40:34,375 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:40:34,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:40:34,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:40:34,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:40:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 08:40:34,378 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2018-07-25 08:40:34,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,379 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 08:40:34,379 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:40:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 08:40:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:40:34,379 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,380 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1] [2018-07-25 08:40:34,380 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,380 INFO L82 PathProgramCache]: Analyzing trace with hash -746910153, now seen corresponding path program 33 times [2018-07-25 08:40:34,380 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,542 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 08:40:34,542 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:40:34,543 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:40:34,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:40:34,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:40:34,544 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 36 states. [2018-07-25 08:40:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,573 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2018-07-25 08:40:34,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:40:34,573 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 72 [2018-07-25 08:40:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,574 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:40:34,574 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:40:34,575 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:40:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:40:34,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:40:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:40:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 08:40:34,579 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-25 08:40:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,579 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 08:40:34,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:40:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 08:40:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:40:34,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,580 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1] [2018-07-25 08:40:34,581 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,581 INFO L82 PathProgramCache]: Analyzing trace with hash -604676813, now seen corresponding path program 34 times [2018-07-25 08:40:34,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,746 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 08:40:34,746 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:40:34,747 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:40:34,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:40:34,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:40:34,749 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 37 states. [2018-07-25 08:40:34,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,786 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2018-07-25 08:40:34,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:40:34,787 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 74 [2018-07-25 08:40:34,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,788 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:40:34,788 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:40:34,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:40:34,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:40:34,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:40:34,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:40:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-25 08:40:34,793 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-07-25 08:40:34,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,793 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-25 08:40:34,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:40:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-25 08:40:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:40:34,794 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,795 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1] [2018-07-25 08:40:34,795 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1357390545, now seen corresponding path program 35 times [2018-07-25 08:40:34,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:34,959 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 08:40:34,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:34,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:40:34,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:40:34,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:40:34,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:40:34,962 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 38 states. [2018-07-25 08:40:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:34,987 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2018-07-25 08:40:34,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:40:34,987 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 76 [2018-07-25 08:40:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:34,988 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:40:34,988 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:40:34,989 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:40:34,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:40:34,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:40:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:40:34,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 08:40:34,993 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2018-07-25 08:40:34,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:34,993 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 08:40:34,993 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:40:34,994 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 08:40:34,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:40:34,994 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:34,995 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1] [2018-07-25 08:40:34,995 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:34,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1134186027, now seen corresponding path program 36 times [2018-07-25 08:40:34,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,178 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 08:40:35,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:40:35,180 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:40:35,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:40:35,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:40:35,183 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 39 states. [2018-07-25 08:40:35,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,220 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2018-07-25 08:40:35,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:40:35,220 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 78 [2018-07-25 08:40:35,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,221 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:40:35,221 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:40:35,222 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:40:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:40:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:40:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:40:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 08:40:35,227 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-07-25 08:40:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,227 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 08:40:35,228 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:40:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 08:40:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:40:35,228 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,228 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1] [2018-07-25 08:40:35,229 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1052479449, now seen corresponding path program 37 times [2018-07-25 08:40:35,229 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,413 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 08:40:35,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:40:35,414 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:40:35,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:40:35,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:40:35,416 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 40 states. [2018-07-25 08:40:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,454 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2018-07-25 08:40:35,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:40:35,455 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 80 [2018-07-25 08:40:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,456 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:40:35,456 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:40:35,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:40:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:40:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:40:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:40:35,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-25 08:40:35,464 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-07-25 08:40:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,465 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-25 08:40:35,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:40:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-25 08:40:35,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:40:35,466 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,466 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1] [2018-07-25 08:40:35,466 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2095973155, now seen corresponding path program 38 times [2018-07-25 08:40:35,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,648 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 08:40:35,648 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:40:35,649 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:40:35,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:40:35,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:40:35,651 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 41 states. [2018-07-25 08:40:35,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,692 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2018-07-25 08:40:35,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:40:35,692 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 82 [2018-07-25 08:40:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,693 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:40:35,693 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:40:35,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:40:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:40:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:40:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:40:35,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 08:40:35,700 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-07-25 08:40:35,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,700 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 08:40:35,700 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:40:35,700 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 08:40:35,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:40:35,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,702 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1] [2018-07-25 08:40:35,702 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,702 INFO L82 PathProgramCache]: Analyzing trace with hash -193018081, now seen corresponding path program 39 times [2018-07-25 08:40:35,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:35,913 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 08:40:35,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:35,914 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:40:35,914 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:40:35,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:40:35,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:40:35,916 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 42 states. [2018-07-25 08:40:35,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:35,957 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2018-07-25 08:40:35,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:40:35,957 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 84 [2018-07-25 08:40:35,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:35,958 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:40:35,958 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:40:35,960 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:40:35,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:40:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:40:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:40:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 08:40:35,965 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-07-25 08:40:35,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:35,965 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 08:40:35,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:40:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 08:40:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:40:35,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:35,967 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1] [2018-07-25 08:40:35,967 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:35,967 INFO L82 PathProgramCache]: Analyzing trace with hash -890340325, now seen corresponding path program 40 times [2018-07-25 08:40:35,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:36,238 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 08:40:36,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:36,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:40:36,239 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:40:36,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:40:36,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:40:36,241 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 43 states. [2018-07-25 08:40:36,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:36,300 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2018-07-25 08:40:36,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:40:36,300 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 86 [2018-07-25 08:40:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:36,301 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:40:36,302 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:40:36,303 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:40:36,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:40:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:40:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:40:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-25 08:40:36,308 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2018-07-25 08:40:36,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:36,308 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-25 08:40:36,309 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:40:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-25 08:40:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:40:36,310 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:36,310 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1] [2018-07-25 08:40:36,310 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:36,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1002118633, now seen corresponding path program 41 times [2018-07-25 08:40:36,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:36,679 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 08:40:36,679 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:36,680 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:40:36,680 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:40:36,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:40:36,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:40:36,682 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 44 states. [2018-07-25 08:40:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:36,720 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2018-07-25 08:40:36,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:40:36,721 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 88 [2018-07-25 08:40:36,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:36,722 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:40:36,722 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:40:36,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:40:36,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:40:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:40:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:40:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 08:40:36,729 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-07-25 08:40:36,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:36,729 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 08:40:36,729 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:40:36,729 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 08:40:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:40:36,730 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:36,730 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1] [2018-07-25 08:40:36,731 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:36,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1046890221, now seen corresponding path program 42 times [2018-07-25 08:40:36,731 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:37,131 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 08:40:37,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:37,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:40:37,133 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:40:37,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:40:37,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:40:37,135 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 45 states. [2018-07-25 08:40:37,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:37,186 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2018-07-25 08:40:37,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:40:37,186 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 90 [2018-07-25 08:40:37,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:37,187 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:40:37,187 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:40:37,189 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:40:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:40:37,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:40:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:40:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 08:40:37,195 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-25 08:40:37,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:37,196 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 08:40:37,196 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:40:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 08:40:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:40:37,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:37,197 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1] [2018-07-25 08:40:37,198 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:37,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1122713329, now seen corresponding path program 43 times [2018-07-25 08:40:37,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:37,459 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 08:40:37,459 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:37,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:40:37,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:40:37,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:40:37,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:40:37,462 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 46 states. [2018-07-25 08:40:37,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:37,498 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2018-07-25 08:40:37,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:40:37,498 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 92 [2018-07-25 08:40:37,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:37,499 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:40:37,499 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:40:37,500 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:40:37,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:40:37,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:40:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:40:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-25 08:40:37,505 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2018-07-25 08:40:37,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:37,506 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-25 08:40:37,506 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:40:37,506 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-25 08:40:37,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:40:37,507 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:37,507 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1] [2018-07-25 08:40:37,507 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:37,507 INFO L82 PathProgramCache]: Analyzing trace with hash -974276085, now seen corresponding path program 44 times [2018-07-25 08:40:37,508 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:37,706 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 08:40:37,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:37,707 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:40:37,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:40:37,708 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:40:37,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:40:37,709 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 47 states. [2018-07-25 08:40:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:37,741 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2018-07-25 08:40:37,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:40:37,741 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 94 [2018-07-25 08:40:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:37,742 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:40:37,742 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:40:37,743 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:40:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:40:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:40:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:40:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 08:40:37,747 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2018-07-25 08:40:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:37,748 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 08:40:37,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:40:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 08:40:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:40:37,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:37,749 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1] [2018-07-25 08:40:37,749 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:37,749 INFO L82 PathProgramCache]: Analyzing trace with hash -60005369, now seen corresponding path program 45 times [2018-07-25 08:40:37,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:37,949 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 08:40:37,949 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:37,949 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:40:37,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:40:37,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:40:37,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:40:37,951 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 48 states. [2018-07-25 08:40:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:37,984 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2018-07-25 08:40:37,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:40:37,984 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 96 [2018-07-25 08:40:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:37,985 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:40:37,985 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:40:37,986 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:40:37,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:40:37,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:40:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:40:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 08:40:37,991 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-25 08:40:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:37,991 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 08:40:37,991 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:40:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 08:40:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:40:37,992 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:37,993 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1] [2018-07-25 08:40:37,993 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:37,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1914142973, now seen corresponding path program 46 times [2018-07-25 08:40:37,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:38,198 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 08:40:38,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:38,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:40:38,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:40:38,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:40:38,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:40:38,201 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 49 states. [2018-07-25 08:40:38,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:38,237 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2018-07-25 08:40:38,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:40:38,237 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 98 [2018-07-25 08:40:38,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:38,239 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:40:38,239 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:40:38,240 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:40:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:40:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:40:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:40:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-25 08:40:38,244 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-07-25 08:40:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:38,244 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-25 08:40:38,244 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:40:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-25 08:40:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:40:38,245 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:38,246 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1] [2018-07-25 08:40:38,246 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:38,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1328952577, now seen corresponding path program 47 times [2018-07-25 08:40:38,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:38,468 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 08:40:38,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:38,468 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:40:38,469 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:40:38,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:40:38,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:40:38,471 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 50 states. [2018-07-25 08:40:38,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:38,516 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2018-07-25 08:40:38,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:40:38,516 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 100 [2018-07-25 08:40:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:38,519 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:40:38,519 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:40:38,520 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:40:38,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:40:38,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:40:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:40:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 08:40:38,530 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2018-07-25 08:40:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:38,531 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 08:40:38,531 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:40:38,531 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 08:40:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:40:38,532 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:38,532 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1] [2018-07-25 08:40:38,532 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:38,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1601697797, now seen corresponding path program 48 times [2018-07-25 08:40:38,533 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:38,750 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 08:40:38,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:38,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:40:38,751 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:40:38,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:40:38,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:40:38,753 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 51 states. [2018-07-25 08:40:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:38,820 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2018-07-25 08:40:38,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:40:38,820 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 102 [2018-07-25 08:40:38,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:38,821 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:40:38,822 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:40:38,824 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:40:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:40:38,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:40:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:40:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 08:40:38,829 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-07-25 08:40:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:38,829 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 08:40:38,829 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:40:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 08:40:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:40:38,831 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:38,831 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1] [2018-07-25 08:40:38,831 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:38,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1716849161, now seen corresponding path program 49 times [2018-07-25 08:40:38,832 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,097 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 08:40:39,097 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:40:39,098 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:40:39,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:40:39,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:40:39,100 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 52 states. [2018-07-25 08:40:39,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:39,139 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2018-07-25 08:40:39,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:40:39,139 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 104 [2018-07-25 08:40:39,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:39,140 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:40:39,140 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:40:39,142 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:40:39,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:40:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:40:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:40:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-25 08:40:39,147 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-07-25 08:40:39,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:39,148 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-25 08:40:39,148 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:40:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-25 08:40:39,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:40:39,149 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:39,149 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1, 1, 1] [2018-07-25 08:40:39,150 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:39,150 INFO L82 PathProgramCache]: Analyzing trace with hash -708160269, now seen corresponding path program 50 times [2018-07-25 08:40:39,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,451 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 08:40:39,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:40:39,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:40:39,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:40:39,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:40:39,454 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 53 states. [2018-07-25 08:40:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:39,497 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2018-07-25 08:40:39,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:40:39,498 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 106 [2018-07-25 08:40:39,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:39,499 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:40:39,499 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:40:39,500 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:40:39,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:40:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:40:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:40:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 08:40:39,505 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-07-25 08:40:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:39,505 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 08:40:39,506 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:40:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 08:40:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:40:39,507 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:39,507 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1] [2018-07-25 08:40:39,507 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:39,507 INFO L82 PathProgramCache]: Analyzing trace with hash -2020743953, now seen corresponding path program 51 times [2018-07-25 08:40:39,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,714 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 08:40:39,715 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,715 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:40:39,715 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:40:39,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:40:39,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:40:39,717 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 54 states. [2018-07-25 08:40:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:39,775 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2018-07-25 08:40:39,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:40:39,775 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 108 [2018-07-25 08:40:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:39,776 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:40:39,777 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:40:39,778 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:40:39,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:40:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:40:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:40:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 08:40:39,782 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-07-25 08:40:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:39,783 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 08:40:39,783 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:40:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 08:40:39,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:40:39,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:39,784 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1, 1, 1] [2018-07-25 08:40:39,784 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:39,784 INFO L82 PathProgramCache]: Analyzing trace with hash -693279253, now seen corresponding path program 52 times [2018-07-25 08:40:39,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:40,001 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 08:40:40,001 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:40,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:40:40,002 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:40:40,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:40:40,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:40:40,004 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 55 states. [2018-07-25 08:40:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:40,061 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2018-07-25 08:40:40,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:40:40,062 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 110 [2018-07-25 08:40:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:40,063 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:40:40,063 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:40:40,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:40:40,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:40:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:40:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:40:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-25 08:40:40,069 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2018-07-25 08:40:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:40,069 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-25 08:40:40,070 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:40:40,070 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-25 08:40:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:40:40,071 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:40,071 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1, 1, 1] [2018-07-25 08:40:40,071 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:40,072 INFO L82 PathProgramCache]: Analyzing trace with hash -604989465, now seen corresponding path program 53 times [2018-07-25 08:40:40,072 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:40,298 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 08:40:40,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:40,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:40:40,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:40:40,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:40:40,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:40:40,301 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 56 states. [2018-07-25 08:40:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:40,365 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2018-07-25 08:40:40,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:40:40,365 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 112 [2018-07-25 08:40:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:40,366 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:40:40,367 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:40:40,368 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:40:40,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:40:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:40:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:40:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 08:40:40,372 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-07-25 08:40:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:40,373 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 08:40:40,373 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:40:40,373 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 08:40:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:40:40,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:40,374 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1, 1, 1] [2018-07-25 08:40:40,375 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:40,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1657849117, now seen corresponding path program 54 times [2018-07-25 08:40:40,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:40,613 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 08:40:40,613 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:40,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:40:40,614 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:40:40,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:40:40,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:40:40,615 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 57 states. [2018-07-25 08:40:40,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:40,681 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2018-07-25 08:40:40,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:40:40,681 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 114 [2018-07-25 08:40:40,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:40,683 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:40:40,683 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:40:40,684 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:40:40,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:40:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:40:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:40:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 08:40:40,688 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-25 08:40:40,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:40,689 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 08:40:40,689 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:40:40,689 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 08:40:40,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:40:40,690 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:40,690 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1, 1, 1] [2018-07-25 08:40:40,691 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:40,691 INFO L82 PathProgramCache]: Analyzing trace with hash 156307167, now seen corresponding path program 55 times [2018-07-25 08:40:40,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:40,913 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 08:40:40,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:40,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:40:40,914 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:40:40,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:40:40,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:40:40,915 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 58 states. [2018-07-25 08:40:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:40,952 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2018-07-25 08:40:40,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:40:40,953 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 116 [2018-07-25 08:40:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:40,954 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:40:40,954 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:40:40,955 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:40:40,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:40:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:40:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:40:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-25 08:40:40,960 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2018-07-25 08:40:40,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:40,960 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-25 08:40:40,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:40:40,960 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-25 08:40:40,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:40:40,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:40,961 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1, 1, 1] [2018-07-25 08:40:40,962 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:40,962 INFO L82 PathProgramCache]: Analyzing trace with hash -196226085, now seen corresponding path program 56 times [2018-07-25 08:40:40,962 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:41,192 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 08:40:41,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:41,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:40:41,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:40:41,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:40:41,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:40:41,197 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 59 states. [2018-07-25 08:40:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,267 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2018-07-25 08:40:41,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:40:41,267 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 118 [2018-07-25 08:40:41,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,268 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:40:41,268 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:40:41,269 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:40:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:40:41,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:40:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:40:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 08:40:41,274 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118 [2018-07-25 08:40:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:41,274 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 08:40:41,274 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:40:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 08:40:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:40:41,275 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:41,276 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1, 1, 1] [2018-07-25 08:40:41,276 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:41,276 INFO L82 PathProgramCache]: Analyzing trace with hash 321735127, now seen corresponding path program 57 times [2018-07-25 08:40:41,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:41,503 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 08:40:41,503 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:41,503 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:40:41,504 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:40:41,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:40:41,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:40:41,505 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 60 states. [2018-07-25 08:40:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,565 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2018-07-25 08:40:41,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:40:41,566 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 120 [2018-07-25 08:40:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,567 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:40:41,567 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:40:41,568 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:40:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:40:41,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:40:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:40:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 08:40:41,572 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-25 08:40:41,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:41,573 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 08:40:41,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:40:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 08:40:41,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:40:41,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:41,574 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1, 1, 1] [2018-07-25 08:40:41,574 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:41,575 INFO L82 PathProgramCache]: Analyzing trace with hash -133746477, now seen corresponding path program 58 times [2018-07-25 08:40:41,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:41,877 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 08:40:41,877 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:41,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:40:41,878 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:40:41,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:40:41,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:40:41,880 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 61 states. [2018-07-25 08:40:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:41,932 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2018-07-25 08:40:41,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:40:41,933 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 122 [2018-07-25 08:40:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:41,934 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:40:41,934 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:40:41,935 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:40:41,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:40:41,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:40:41,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:40:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-25 08:40:41,941 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-07-25 08:40:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:41,942 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-25 08:40:41,942 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:40:41,942 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-25 08:40:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:40:41,943 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:41,943 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1, 1, 1] [2018-07-25 08:40:41,944 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:41,944 INFO L82 PathProgramCache]: Analyzing trace with hash 235096271, now seen corresponding path program 59 times [2018-07-25 08:40:41,944 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:42,230 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 08:40:42,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:42,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:40:42,231 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:40:42,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:40:42,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:40:42,233 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 62 states. [2018-07-25 08:40:42,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:42,303 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2018-07-25 08:40:42,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:40:42,303 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 124 [2018-07-25 08:40:42,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:42,304 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:40:42,304 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:40:42,305 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:40:42,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:40:42,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:40:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:40:42,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 08:40:42,311 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124 [2018-07-25 08:40:42,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:42,311 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 08:40:42,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:40:42,311 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 08:40:42,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:40:42,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:42,313 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1, 1, 1] [2018-07-25 08:40:42,313 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:42,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1789308469, now seen corresponding path program 60 times [2018-07-25 08:40:42,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:42,541 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 08:40:42,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:42,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:40:42,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:40:42,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:40:42,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:40:42,543 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 63 states. [2018-07-25 08:40:42,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:42,598 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2018-07-25 08:40:42,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:40:42,598 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 126 [2018-07-25 08:40:42,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:42,599 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:40:42,599 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:40:42,600 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:40:42,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:40:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:40:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:40:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 08:40:42,605 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-07-25 08:40:42,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:42,605 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 08:40:42,605 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:40:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 08:40:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:40:42,607 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:42,607 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1, 1, 1] [2018-07-25 08:40:42,607 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:42,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1622078521, now seen corresponding path program 61 times [2018-07-25 08:40:42,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:42,844 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 08:40:42,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:42,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:40:42,845 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:40:42,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:40:42,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:40:42,847 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 64 states. [2018-07-25 08:40:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:42,923 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2018-07-25 08:40:42,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:40:42,923 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 128 [2018-07-25 08:40:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:42,924 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:40:42,925 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:40:42,925 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:40:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:40:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:40:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:40:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-25 08:40:42,931 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-07-25 08:40:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:42,932 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-25 08:40:42,932 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:40:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-25 08:40:42,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:40:42,933 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:42,933 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1, 1, 1] [2018-07-25 08:40:42,934 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:42,934 INFO L82 PathProgramCache]: Analyzing trace with hash 172111555, now seen corresponding path program 62 times [2018-07-25 08:40:42,934 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:43,192 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 08:40:43,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:43,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:40:43,193 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:40:43,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:40:43,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:40:43,196 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 65 states. [2018-07-25 08:40:43,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:43,252 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2018-07-25 08:40:43,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:40:43,252 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 130 [2018-07-25 08:40:43,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:43,253 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:40:43,254 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:40:43,254 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:40:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:40:43,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:40:43,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:40:43,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 08:40:43,259 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-07-25 08:40:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:43,259 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 08:40:43,259 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:40:43,260 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 08:40:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:40:43,261 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:43,261 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1] [2018-07-25 08:40:43,261 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:43,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2106888895, now seen corresponding path program 63 times [2018-07-25 08:40:43,262 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:43,522 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 08:40:43,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:43,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:40:43,523 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:40:43,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:40:43,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:40:43,526 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 66 states. [2018-07-25 08:40:43,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:43,598 INFO L93 Difference]: Finished difference Result 139 states and 141 transitions. [2018-07-25 08:40:43,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:40:43,598 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 132 [2018-07-25 08:40:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:43,599 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:40:43,600 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:40:43,601 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:40:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:40:43,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:40:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:40:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 08:40:43,609 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-07-25 08:40:43,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:43,610 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 08:40:43,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:40:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 08:40:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:40:43,612 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:43,612 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1, 1, 1] [2018-07-25 08:40:43,612 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1707073467, now seen corresponding path program 64 times [2018-07-25 08:40:43,613 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:43,899 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 08:40:43,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:43,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:40:43,900 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:40:43,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:40:43,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:40:43,902 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 67 states. [2018-07-25 08:40:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:43,988 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2018-07-25 08:40:43,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:40:43,988 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 134 [2018-07-25 08:40:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:43,990 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:40:43,990 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:40:43,991 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:40:43,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:40:43,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:40:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:40:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-25 08:40:43,996 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2018-07-25 08:40:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:43,997 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-25 08:40:43,997 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:40:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-25 08:40:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:40:43,998 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:43,999 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1, 1, 1] [2018-07-25 08:40:43,999 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:43,999 INFO L82 PathProgramCache]: Analyzing trace with hash -263463497, now seen corresponding path program 65 times [2018-07-25 08:40:43,999 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:44,249 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 08:40:44,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:44,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:40:44,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:40:44,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:40:44,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:40:44,252 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 68 states. [2018-07-25 08:40:44,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:44,365 INFO L93 Difference]: Finished difference Result 143 states and 145 transitions. [2018-07-25 08:40:44,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:40:44,366 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 136 [2018-07-25 08:40:44,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:44,368 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:40:44,368 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:40:44,369 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:40:44,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:40:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:40:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:40:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 08:40:44,380 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-07-25 08:40:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:44,380 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 08:40:44,380 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:40:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 08:40:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:40:44,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:44,382 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1, 1, 1] [2018-07-25 08:40:44,382 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:44,383 INFO L82 PathProgramCache]: Analyzing trace with hash 131091635, now seen corresponding path program 66 times [2018-07-25 08:40:44,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:44,622 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 08:40:44,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:44,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:40:44,623 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:40:44,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:40:44,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:40:44,624 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 69 states. [2018-07-25 08:40:44,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:44,707 INFO L93 Difference]: Finished difference Result 145 states and 147 transitions. [2018-07-25 08:40:44,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:40:44,708 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 138 [2018-07-25 08:40:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:44,709 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:40:44,709 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:40:44,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:40:44,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:40:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:40:44,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:40:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 08:40:44,715 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-25 08:40:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:44,715 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 08:40:44,717 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:40:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 08:40:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:40:44,718 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:44,718 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1, 1, 1] [2018-07-25 08:40:44,718 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:44,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1341451439, now seen corresponding path program 67 times [2018-07-25 08:40:44,718 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:44,972 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 08:40:44,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:44,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:40:44,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:40:44,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:40:44,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:40:44,975 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 70 states. [2018-07-25 08:40:45,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:45,061 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2018-07-25 08:40:45,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:40:45,061 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 140 [2018-07-25 08:40:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:45,063 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:40:45,063 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:40:45,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:40:45,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:40:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:40:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:40:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-25 08:40:45,069 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2018-07-25 08:40:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:45,069 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-25 08:40:45,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:40:45,069 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-25 08:40:45,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:40:45,070 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:45,070 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1, 1, 1] [2018-07-25 08:40:45,070 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:45,071 INFO L82 PathProgramCache]: Analyzing trace with hash 561085867, now seen corresponding path program 68 times [2018-07-25 08:40:45,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:45,329 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 08:40:45,329 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:45,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:40:45,330 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:40:45,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:40:45,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:40:45,331 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 71 states. [2018-07-25 08:40:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:45,421 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2018-07-25 08:40:45,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:40:45,421 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 142 [2018-07-25 08:40:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:45,423 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:40:45,423 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:40:45,423 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:40:45,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:40:45,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:40:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:40:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 08:40:45,428 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 142 [2018-07-25 08:40:45,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:45,428 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 08:40:45,428 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:40:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 08:40:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:40:45,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:45,430 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1, 1, 1] [2018-07-25 08:40:45,430 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:45,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2045919321, now seen corresponding path program 69 times [2018-07-25 08:40:45,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:45,678 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 08:40:45,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:45,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:40:45,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:40:45,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:40:45,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:40:45,680 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 72 states. [2018-07-25 08:40:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:45,774 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2018-07-25 08:40:45,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:40:45,774 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 144 [2018-07-25 08:40:45,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:45,775 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:40:45,776 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:40:45,776 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:40:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:40:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:40:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:40:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 08:40:45,781 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-25 08:40:45,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:45,781 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 08:40:45,781 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:40:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 08:40:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:40:45,782 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:45,783 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1, 1, 1] [2018-07-25 08:40:45,783 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:45,783 INFO L82 PathProgramCache]: Analyzing trace with hash 882995875, now seen corresponding path program 70 times [2018-07-25 08:40:45,783 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:46,041 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 08:40:46,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:46,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:40:46,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:40:46,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:40:46,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:40:46,043 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 73 states. [2018-07-25 08:40:46,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:46,092 INFO L93 Difference]: Finished difference Result 153 states and 155 transitions. [2018-07-25 08:40:46,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:40:46,093 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 146 [2018-07-25 08:40:46,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:46,094 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:40:46,094 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:40:46,095 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:40:46,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:40:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:40:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:40:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-25 08:40:46,099 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-07-25 08:40:46,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:46,100 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-25 08:40:46,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:40:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-25 08:40:46,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:40:46,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:46,101 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1, 1, 1] [2018-07-25 08:40:46,101 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:46,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1928046945, now seen corresponding path program 71 times [2018-07-25 08:40:46,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:46,358 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 08:40:46,358 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:46,358 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:40:46,359 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:40:46,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:40:46,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:40:46,361 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 74 states. [2018-07-25 08:40:46,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:46,460 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2018-07-25 08:40:46,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:40:46,460 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 148 [2018-07-25 08:40:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:46,462 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:40:46,462 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:40:46,463 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:40:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:40:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:40:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:40:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 08:40:46,468 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 148 [2018-07-25 08:40:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:46,469 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 08:40:46,469 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:40:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 08:40:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:40:46,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:46,470 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1, 1, 1] [2018-07-25 08:40:46,471 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:46,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1805767781, now seen corresponding path program 72 times [2018-07-25 08:40:46,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:46,870 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 08:40:46,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:46,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:40:46,871 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:40:46,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:40:46,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:40:46,873 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 75 states. [2018-07-25 08:40:46,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:46,986 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2018-07-25 08:40:46,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:40:46,987 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 150 [2018-07-25 08:40:46,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:46,988 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:40:46,988 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:40:46,989 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:40:46,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:40:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:40:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:40:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 08:40:47,020 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-07-25 08:40:47,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:47,021 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 08:40:47,021 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:40:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 08:40:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:40:47,022 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:47,022 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1, 1, 1] [2018-07-25 08:40:47,022 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:47,030 INFO L82 PathProgramCache]: Analyzing trace with hash -259608169, now seen corresponding path program 73 times [2018-07-25 08:40:47,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:47,293 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 08:40:47,294 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:47,294 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:40:47,294 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:40:47,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:40:47,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:40:47,296 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 76 states. [2018-07-25 08:40:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:47,348 INFO L93 Difference]: Finished difference Result 159 states and 161 transitions. [2018-07-25 08:40:47,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:40:47,349 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 152 [2018-07-25 08:40:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:47,350 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:40:47,350 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:40:47,351 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:40:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:40:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:40:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:40:47,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-25 08:40:47,355 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-07-25 08:40:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:47,357 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-25 08:40:47,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:40:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-25 08:40:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:40:47,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:47,358 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1, 1, 1] [2018-07-25 08:40:47,358 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:47,358 INFO L82 PathProgramCache]: Analyzing trace with hash -458905453, now seen corresponding path program 74 times [2018-07-25 08:40:47,358 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:47,655 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 08:40:47,655 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:47,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:40:47,656 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:40:47,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:40:47,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:40:47,658 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 77 states. [2018-07-25 08:40:47,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:47,741 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2018-07-25 08:40:47,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:40:47,741 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 154 [2018-07-25 08:40:47,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:47,742 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:40:47,742 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:40:47,743 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:40:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:40:47,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:40:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:40:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 08:40:47,748 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-07-25 08:40:47,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:47,748 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 08:40:47,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:40:47,749 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 08:40:47,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:40:47,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:47,750 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1, 1, 1] [2018-07-25 08:40:47,750 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:47,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1289932943, now seen corresponding path program 75 times [2018-07-25 08:40:47,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:48,039 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 08:40:48,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:48,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:40:48,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:40:48,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:40:48,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:40:48,042 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 78 states. [2018-07-25 08:40:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:48,101 INFO L93 Difference]: Finished difference Result 163 states and 165 transitions. [2018-07-25 08:40:48,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:40:48,101 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 156 [2018-07-25 08:40:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:48,103 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:40:48,103 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:40:48,103 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:40:48,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:40:48,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:40:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:40:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 08:40:48,108 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-07-25 08:40:48,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:48,108 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 08:40:48,108 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:40:48,108 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 08:40:48,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:40:48,109 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:48,109 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1, 1, 1] [2018-07-25 08:40:48,110 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:48,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1703548533, now seen corresponding path program 76 times [2018-07-25 08:40:48,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:48,435 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 08:40:48,436 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:48,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:40:48,436 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:40:48,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:40:48,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:40:48,438 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 79 states. [2018-07-25 08:40:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:48,532 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2018-07-25 08:40:48,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:40:48,532 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 158 [2018-07-25 08:40:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:48,534 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:40:48,534 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:40:48,535 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:40:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:40:48,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:40:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:40:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-25 08:40:48,539 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2018-07-25 08:40:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:48,539 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-25 08:40:48,539 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:40:48,540 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-25 08:40:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:40:48,540 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:48,540 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1, 1, 1] [2018-07-25 08:40:48,541 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:48,541 INFO L82 PathProgramCache]: Analyzing trace with hash -811158649, now seen corresponding path program 77 times [2018-07-25 08:40:48,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:48,851 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 08:40:48,851 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:48,851 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:40:48,851 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:40:48,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:40:48,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:40:48,853 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 80 states. [2018-07-25 08:40:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:48,934 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2018-07-25 08:40:48,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:40:48,935 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 160 [2018-07-25 08:40:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:48,936 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:40:48,936 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:40:48,937 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:40:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:40:48,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:40:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:40:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 08:40:48,941 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-07-25 08:40:48,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:48,941 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 08:40:48,941 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:40:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 08:40:48,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:40:48,942 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:48,942 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1, 1, 1] [2018-07-25 08:40:48,943 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:48,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2077027971, now seen corresponding path program 78 times [2018-07-25 08:40:48,943 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:49,298 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 08:40:49,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:49,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:40:49,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:40:49,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:40:49,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:40:49,304 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 81 states. [2018-07-25 08:40:49,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:49,430 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2018-07-25 08:40:49,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:40:49,430 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 162 [2018-07-25 08:40:49,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:49,431 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:40:49,431 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:40:49,432 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:40:49,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:40:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:40:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:40:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 08:40:49,438 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-25 08:40:49,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:49,438 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 08:40:49,438 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:40:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 08:40:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:40:49,439 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:49,439 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1, 1, 1] [2018-07-25 08:40:49,440 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:49,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1219470721, now seen corresponding path program 79 times [2018-07-25 08:40:49,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:49,683 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 08:40:49,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:49,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:40:49,684 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:40:49,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:40:49,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:40:49,685 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 82 states. [2018-07-25 08:40:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:49,754 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2018-07-25 08:40:49,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:40:49,754 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 164 [2018-07-25 08:40:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:49,755 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:40:49,755 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:40:49,756 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:40:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:40:49,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:40:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:40:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-25 08:40:49,760 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2018-07-25 08:40:49,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:49,760 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-25 08:40:49,761 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:40:49,761 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-25 08:40:49,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:40:49,762 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:49,762 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1, 1, 1] [2018-07-25 08:40:49,762 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:49,762 INFO L82 PathProgramCache]: Analyzing trace with hash 531150715, now seen corresponding path program 80 times [2018-07-25 08:40:49,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:50,021 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 08:40:50,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:50,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:40:50,022 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:40:50,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:40:50,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:40:50,024 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 83 states. [2018-07-25 08:40:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:50,098 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2018-07-25 08:40:50,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:40:50,098 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 166 [2018-07-25 08:40:50,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:50,099 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:40:50,100 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:40:50,101 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:40:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:40:50,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:40:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:40:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 08:40:50,105 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 166 [2018-07-25 08:40:50,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:50,105 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 08:40:50,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:40:50,106 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 08:40:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:40:50,106 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:50,107 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1, 1, 1] [2018-07-25 08:40:50,107 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:50,107 INFO L82 PathProgramCache]: Analyzing trace with hash -748829321, now seen corresponding path program 81 times [2018-07-25 08:40:50,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:50,378 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 08:40:50,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:50,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:40:50,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:40:50,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:40:50,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:40:50,380 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 84 states. [2018-07-25 08:40:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:50,426 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2018-07-25 08:40:50,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:40:50,426 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 168 [2018-07-25 08:40:50,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:50,427 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:40:50,427 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:40:50,428 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:40:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:40:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:40:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:40:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 08:40:50,432 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-25 08:40:50,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:50,432 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 08:40:50,432 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:40:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 08:40:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:40:50,433 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:50,433 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1, 1, 1] [2018-07-25 08:40:50,433 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:50,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1845970035, now seen corresponding path program 82 times [2018-07-25 08:40:50,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:50,730 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 08:40:50,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:50,730 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:40:50,730 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:40:50,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:40:50,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:40:50,732 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 85 states. [2018-07-25 08:40:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:50,791 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2018-07-25 08:40:50,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:40:50,791 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 170 [2018-07-25 08:40:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:50,793 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:40:50,793 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:40:50,794 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:40:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:40:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:40:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:40:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-25 08:40:50,798 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-07-25 08:40:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:50,798 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-25 08:40:50,798 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:40:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-25 08:40:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:40:50,799 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:50,799 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1, 1, 1] [2018-07-25 08:40:50,799 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash 72152175, now seen corresponding path program 83 times [2018-07-25 08:40:50,800 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:51,094 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 08:40:51,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:51,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:40:51,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:40:51,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:40:51,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:40:51,097 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 86 states. [2018-07-25 08:40:51,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:51,184 INFO L93 Difference]: Finished difference Result 179 states and 181 transitions. [2018-07-25 08:40:51,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:40:51,184 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 172 [2018-07-25 08:40:51,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:51,185 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:40:51,185 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:40:51,185 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:40:51,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:40:51,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:40:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:40:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 08:40:51,188 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 172 [2018-07-25 08:40:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:51,189 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 08:40:51,189 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:40:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 08:40:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:40:51,190 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:51,190 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1, 1, 1] [2018-07-25 08:40:51,190 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:51,190 INFO L82 PathProgramCache]: Analyzing trace with hash 535205227, now seen corresponding path program 84 times [2018-07-25 08:40:51,190 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:51,503 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 08:40:51,503 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:51,503 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:40:51,504 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:40:51,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:40:51,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:40:51,505 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 87 states. [2018-07-25 08:40:51,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:51,613 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2018-07-25 08:40:51,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:40:51,614 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 174 [2018-07-25 08:40:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:51,615 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:40:51,615 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:40:51,615 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:40:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:40:51,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:40:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:40:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 08:40:51,620 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-07-25 08:40:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:51,621 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 08:40:51,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:40:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 08:40:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:40:51,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:51,622 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1, 1, 1] [2018-07-25 08:40:51,622 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:51,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1147410585, now seen corresponding path program 85 times [2018-07-25 08:40:51,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:51,972 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 08:40:51,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:51,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:40:51,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:40:51,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:40:51,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:40:51,975 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 88 states. [2018-07-25 08:40:52,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:52,057 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2018-07-25 08:40:52,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:40:52,057 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 176 [2018-07-25 08:40:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:52,058 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:40:52,058 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:40:52,059 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:40:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:40:52,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:40:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:40:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-25 08:40:52,062 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-07-25 08:40:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:52,063 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-25 08:40:52,063 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:40:52,063 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-25 08:40:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:40:52,064 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:52,064 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1, 1, 1] [2018-07-25 08:40:52,064 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:52,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1061464675, now seen corresponding path program 86 times [2018-07-25 08:40:52,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:52,338 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 08:40:52,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:52,338 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:40:52,339 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:40:52,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:40:52,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:40:52,341 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 89 states. [2018-07-25 08:40:52,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:52,419 INFO L93 Difference]: Finished difference Result 185 states and 187 transitions. [2018-07-25 08:40:52,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:40:52,419 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 178 [2018-07-25 08:40:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:52,420 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:40:52,420 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:40:52,421 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:40:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:40:52,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:40:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:40:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 08:40:52,429 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-07-25 08:40:52,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:52,429 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 08:40:52,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:40:52,429 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 08:40:52,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:40:52,430 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:52,430 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1, 1, 1] [2018-07-25 08:40:52,430 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:52,431 INFO L82 PathProgramCache]: Analyzing trace with hash 2076745311, now seen corresponding path program 87 times [2018-07-25 08:40:52,431 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:52,700 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 08:40:52,700 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:52,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:40:52,701 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:40:52,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:40:52,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:40:52,702 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 90 states. [2018-07-25 08:40:52,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:52,810 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2018-07-25 08:40:52,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:40:52,810 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 180 [2018-07-25 08:40:52,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:52,811 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:40:52,811 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:40:52,812 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:40:52,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:40:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:40:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:40:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 08:40:52,817 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-07-25 08:40:52,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:52,817 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 08:40:52,818 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:40:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 08:40:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:40:52,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:52,819 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1, 1, 1] [2018-07-25 08:40:52,819 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:52,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1491106981, now seen corresponding path program 88 times [2018-07-25 08:40:52,825 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:53,137 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 08:40:53,138 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:53,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:40:53,138 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:40:53,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:40:53,140 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:40:53,140 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 91 states. [2018-07-25 08:40:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:53,202 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2018-07-25 08:40:53,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:40:53,202 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 182 [2018-07-25 08:40:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:53,203 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:40:53,203 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:40:53,204 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:40:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:40:53,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:40:53,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:40:53,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-25 08:40:53,209 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2018-07-25 08:40:53,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:53,209 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-25 08:40:53,209 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:40:53,209 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-25 08:40:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:40:53,211 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:53,211 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1, 1, 1] [2018-07-25 08:40:53,211 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:53,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1481709911, now seen corresponding path program 89 times [2018-07-25 08:40:53,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:53,523 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 08:40:53,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:53,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:40:53,524 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:40:53,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:40:53,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:40:53,525 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 92 states. [2018-07-25 08:40:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:53,653 INFO L93 Difference]: Finished difference Result 191 states and 193 transitions. [2018-07-25 08:40:53,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:40:53,653 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 184 [2018-07-25 08:40:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:53,654 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:40:53,654 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:40:53,654 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:40:53,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:40:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:40:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:40:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 08:40:53,658 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-07-25 08:40:53,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:53,658 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 08:40:53,658 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:40:53,658 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 08:40:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:40:53,659 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:53,659 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1, 1, 1] [2018-07-25 08:40:53,659 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:53,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2089476013, now seen corresponding path program 90 times [2018-07-25 08:40:53,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:54,000 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 08:40:54,001 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:54,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:40:54,001 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:40:54,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:40:54,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:40:54,002 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 93 states. [2018-07-25 08:40:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:54,089 INFO L93 Difference]: Finished difference Result 193 states and 195 transitions. [2018-07-25 08:40:54,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:40:54,089 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 186 [2018-07-25 08:40:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:54,090 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:40:54,090 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:40:54,090 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:40:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:40:54,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:40:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:40:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 08:40:54,095 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-25 08:40:54,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:54,095 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 08:40:54,095 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:40:54,095 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 08:40:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:40:54,096 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:54,096 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1, 1, 1] [2018-07-25 08:40:54,097 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:54,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1974687823, now seen corresponding path program 91 times [2018-07-25 08:40:54,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:54,410 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 08:40:54,410 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:54,410 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:40:54,411 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:40:54,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:40:54,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:40:54,413 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 94 states. [2018-07-25 08:40:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:54,492 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions. [2018-07-25 08:40:54,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:40:54,493 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 188 [2018-07-25 08:40:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:54,494 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:40:54,494 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:40:54,495 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:40:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:40:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:40:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:40:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-25 08:40:54,499 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2018-07-25 08:40:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:54,499 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-25 08:40:54,499 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:40:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-25 08:40:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:40:54,500 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:54,500 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1, 1, 1] [2018-07-25 08:40:54,500 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash -784105141, now seen corresponding path program 92 times [2018-07-25 08:40:54,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:54,810 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 08:40:54,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:54,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:40:54,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:40:54,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:40:54,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:40:54,813 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 95 states. [2018-07-25 08:40:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:54,964 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2018-07-25 08:40:54,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:40:54,964 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 190 [2018-07-25 08:40:54,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:54,965 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:40:54,965 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:40:54,966 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:40:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:40:54,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:40:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:40:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 08:40:54,970 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 190 [2018-07-25 08:40:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:54,971 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 08:40:54,971 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:40:54,971 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 08:40:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:40:54,972 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:54,972 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1, 1, 1] [2018-07-25 08:40:54,972 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:54,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1989321913, now seen corresponding path program 93 times [2018-07-25 08:40:54,973 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:55,289 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 08:40:55,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:55,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:40:55,290 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:40:55,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:40:55,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:40:55,291 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 96 states. [2018-07-25 08:40:55,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:55,455 INFO L93 Difference]: Finished difference Result 199 states and 201 transitions. [2018-07-25 08:40:55,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:40:55,455 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 192 [2018-07-25 08:40:55,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:55,456 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:40:55,456 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:40:55,456 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:40:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:40:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:40:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:40:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 08:40:55,460 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-25 08:40:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:55,461 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 08:40:55,461 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:40:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 08:40:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:40:55,462 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:55,462 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1] [2018-07-25 08:40:55,462 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:55,463 INFO L82 PathProgramCache]: Analyzing trace with hash -561469885, now seen corresponding path program 94 times [2018-07-25 08:40:55,463 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:55,804 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 08:40:55,804 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:55,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:40:55,805 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:40:55,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:40:55,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:40:55,807 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 97 states. [2018-07-25 08:40:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:55,975 INFO L93 Difference]: Finished difference Result 201 states and 203 transitions. [2018-07-25 08:40:55,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:40:55,975 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 194 [2018-07-25 08:40:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:55,976 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:40:55,976 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:40:55,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:40:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:40:55,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:40:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:40:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-25 08:40:55,981 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-07-25 08:40:55,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:55,981 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-25 08:40:55,981 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:40:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-25 08:40:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:40:55,982 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:55,982 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1, 1, 1] [2018-07-25 08:40:55,982 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:55,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1509761599, now seen corresponding path program 95 times [2018-07-25 08:40:55,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:56,334 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 08:40:56,334 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:56,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:40:56,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:40:56,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:40:56,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:40:56,337 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 98 states. [2018-07-25 08:40:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:56,486 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2018-07-25 08:40:56,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:40:56,487 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 196 [2018-07-25 08:40:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:56,488 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:40:56,488 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:40:56,489 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:40:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:40:56,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:40:56,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:40:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 08:40:56,496 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 196 [2018-07-25 08:40:56,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:56,496 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 08:40:56,496 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:40:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 08:40:56,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:40:56,498 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:56,498 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1, 1, 1] [2018-07-25 08:40:56,498 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:56,499 INFO L82 PathProgramCache]: Analyzing trace with hash -901607621, now seen corresponding path program 96 times [2018-07-25 08:40:56,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:56,976 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 08:40:56,976 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:56,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:40:56,977 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:40:56,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:40:56,978 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:40:56,978 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 99 states. [2018-07-25 08:40:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:57,157 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2018-07-25 08:40:57,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:40:57,157 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 198 [2018-07-25 08:40:57,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:57,158 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:40:57,158 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:40:57,159 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:40:57,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:40:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:40:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:40:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 08:40:57,163 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-07-25 08:40:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:57,163 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 08:40:57,163 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:40:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 08:40:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:40:57,164 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:57,164 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1, 1, 1] [2018-07-25 08:40:57,164 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:57,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1054911799, now seen corresponding path program 97 times [2018-07-25 08:40:57,164 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:57,514 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 08:40:57,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:57,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:40:57,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:40:57,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:40:57,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:40:57,516 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 100 states. [2018-07-25 08:40:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:57,702 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2018-07-25 08:40:57,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:40:57,702 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 200 [2018-07-25 08:40:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:57,703 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:40:57,703 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:40:57,704 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:40:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:40:57,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:40:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:40:57,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-25 08:40:57,709 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-07-25 08:40:57,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:57,709 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-25 08:40:57,709 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:40:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-25 08:40:57,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:40:57,710 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:57,711 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1, 1, 1] [2018-07-25 08:40:57,711 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:57,711 INFO L82 PathProgramCache]: Analyzing trace with hash 74398771, now seen corresponding path program 98 times [2018-07-25 08:40:57,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:58,058 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 08:40:58,058 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:58,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:40:58,059 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:40:58,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:40:58,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:40:58,060 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 101 states. [2018-07-25 08:40:58,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:58,220 INFO L93 Difference]: Finished difference Result 209 states and 211 transitions. [2018-07-25 08:40:58,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:40:58,221 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 202 [2018-07-25 08:40:58,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:58,221 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:40:58,222 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:40:58,222 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:40:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:40:58,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:40:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:40:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 08:40:58,226 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-07-25 08:40:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:58,226 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 08:40:58,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:40:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 08:40:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:40:58,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:58,227 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1, 1, 1] [2018-07-25 08:40:58,227 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:58,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1600783313, now seen corresponding path program 99 times [2018-07-25 08:40:58,228 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:58,582 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 08:40:58,582 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:58,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:40:58,583 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:40:58,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:40:58,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:40:58,584 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 102 states. [2018-07-25 08:40:58,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:58,648 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2018-07-25 08:40:58,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:40:58,648 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 204 [2018-07-25 08:40:58,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:58,649 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:40:58,649 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:40:58,649 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:40:58,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:40:58,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:40:58,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:40:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 08:40:58,653 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-07-25 08:40:58,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:58,653 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 08:40:58,653 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:40:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 08:40:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:40:58,654 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:58,654 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1, 1, 1] [2018-07-25 08:40:58,654 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:58,654 INFO L82 PathProgramCache]: Analyzing trace with hash -838030037, now seen corresponding path program 100 times [2018-07-25 08:40:58,654 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:59,027 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 08:40:59,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:59,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:40:59,028 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:40:59,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:40:59,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:40:59,030 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 103 states. [2018-07-25 08:40:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:59,214 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2018-07-25 08:40:59,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:40:59,214 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 206 [2018-07-25 08:40:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:59,215 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:40:59,215 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:40:59,216 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:40:59,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:40:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:40:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:40:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-25 08:40:59,220 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2018-07-25 08:40:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:59,221 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-25 08:40:59,221 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:40:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-25 08:40:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:40:59,222 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:59,222 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1, 1, 1] [2018-07-25 08:40:59,222 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:59,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2023427879, now seen corresponding path program 101 times [2018-07-25 08:40:59,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:59,642 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 08:40:59,642 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:59,642 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:40:59,643 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:40:59,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:40:59,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:40:59,644 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 104 states. [2018-07-25 08:40:59,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:59,835 INFO L93 Difference]: Finished difference Result 215 states and 217 transitions. [2018-07-25 08:40:59,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:40:59,835 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 208 [2018-07-25 08:40:59,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:59,836 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:40:59,836 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:40:59,837 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:40:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:40:59,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:40:59,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:40:59,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 08:40:59,842 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-07-25 08:40:59,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:59,843 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 08:40:59,843 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:40:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 08:40:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:40:59,844 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:59,844 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1, 1, 1] [2018-07-25 08:40:59,844 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:59,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1189551581, now seen corresponding path program 102 times [2018-07-25 08:40:59,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:00,215 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 08:41:00,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:00,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:41:00,216 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:41:00,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:41:00,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:41:00,218 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 105 states. [2018-07-25 08:41:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:00,424 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2018-07-25 08:41:00,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:41:00,424 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 210 [2018-07-25 08:41:00,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:00,426 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:41:00,426 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:41:00,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:41:00,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:41:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:41:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:41:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 08:41:00,432 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-25 08:41:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:00,433 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 08:41:00,433 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:41:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 08:41:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:41:00,434 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:00,434 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1, 1, 1] [2018-07-25 08:41:00,434 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:00,435 INFO L82 PathProgramCache]: Analyzing trace with hash -781326817, now seen corresponding path program 103 times [2018-07-25 08:41:00,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:00,965 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:00,965 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:41:00,965 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:41:00,967 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:41:00,967 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:41:00,968 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 106 states. [2018-07-25 08:41:01,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:01,104 INFO L93 Difference]: Finished difference Result 219 states and 221 transitions. [2018-07-25 08:41:01,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:41:01,105 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 212 [2018-07-25 08:41:01,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:01,105 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:41:01,105 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:41:01,106 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:41:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:41:01,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:41:01,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:41:01,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-25 08:41:01,110 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2018-07-25 08:41:01,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:01,110 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-25 08:41:01,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:41:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-25 08:41:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:41:01,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:01,111 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1, 1, 1] [2018-07-25 08:41:01,111 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:01,111 INFO L82 PathProgramCache]: Analyzing trace with hash 680647451, now seen corresponding path program 104 times [2018-07-25 08:41:01,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:01,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:01,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:41:01,455 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:41:01,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:41:01,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:41:01,457 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 107 states. [2018-07-25 08:41:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:01,625 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2018-07-25 08:41:01,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:41:01,625 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 214 [2018-07-25 08:41:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:01,626 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:41:01,626 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:41:01,627 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:41:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:41:01,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:41:01,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:41:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 08:41:01,632 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 214 [2018-07-25 08:41:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:01,632 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 08:41:01,632 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:41:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 08:41:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:41:01,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:01,634 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1, 1, 1] [2018-07-25 08:41:01,634 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:01,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1183613207, now seen corresponding path program 105 times [2018-07-25 08:41:01,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:02,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:02,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:41:02,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:41:02,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:41:02,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:41:02,044 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 108 states. [2018-07-25 08:41:02,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:02,185 INFO L93 Difference]: Finished difference Result 223 states and 225 transitions. [2018-07-25 08:41:02,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:41:02,185 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 216 [2018-07-25 08:41:02,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:02,186 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:41:02,186 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:41:02,187 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:41:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:41:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:41:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:41:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 08:41:02,191 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-25 08:41:02,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:02,191 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 08:41:02,192 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:41:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 08:41:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:41:02,193 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:02,193 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1, 1, 1] [2018-07-25 08:41:02,193 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:02,193 INFO L82 PathProgramCache]: Analyzing trace with hash -797599725, now seen corresponding path program 106 times [2018-07-25 08:41:02,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:02,852 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:02,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:41:02,853 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:41:02,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:41:02,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:41:02,854 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 109 states. [2018-07-25 08:41:03,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:03,088 INFO L93 Difference]: Finished difference Result 225 states and 227 transitions. [2018-07-25 08:41:03,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:41:03,088 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 218 [2018-07-25 08:41:03,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:03,089 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:41:03,089 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:41:03,090 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:41:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:41:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:41:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:41:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-25 08:41:03,094 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-07-25 08:41:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:03,094 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-25 08:41:03,094 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:41:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-25 08:41:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:41:03,095 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:03,095 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1, 1, 1] [2018-07-25 08:41:03,096 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2072715249, now seen corresponding path program 107 times [2018-07-25 08:41:03,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:03,484 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:03,484 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:41:03,484 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:41:03,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:41:03,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:41:03,486 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 110 states. [2018-07-25 08:41:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:03,731 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2018-07-25 08:41:03,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:41:03,731 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 220 [2018-07-25 08:41:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:03,731 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:41:03,732 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:41:03,733 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:41:03,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:41:03,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:41:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:41:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 08:41:03,737 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 220 [2018-07-25 08:41:03,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:03,738 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 08:41:03,738 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:41:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 08:41:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:41:03,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:03,739 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1, 1, 1] [2018-07-25 08:41:03,739 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:03,740 INFO L82 PathProgramCache]: Analyzing trace with hash 901912843, now seen corresponding path program 108 times [2018-07-25 08:41:03,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:04,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:04,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:41:04,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:41:04,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:41:04,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:41:04,177 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 111 states. [2018-07-25 08:41:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:04,429 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2018-07-25 08:41:04,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:41:04,429 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 222 [2018-07-25 08:41:04,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:04,430 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:41:04,430 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:41:04,431 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:41:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:41:04,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:41:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:41:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 08:41:04,434 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-07-25 08:41:04,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:04,434 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 08:41:04,434 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:41:04,434 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 08:41:04,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:41:04,435 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:04,435 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1, 1, 1] [2018-07-25 08:41:04,435 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:04,435 INFO L82 PathProgramCache]: Analyzing trace with hash -928709881, now seen corresponding path program 109 times [2018-07-25 08:41:04,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:04,867 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:04,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:41:04,867 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:41:04,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:41:04,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:41:04,869 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 112 states. [2018-07-25 08:41:05,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:05,129 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2018-07-25 08:41:05,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:41:05,129 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 224 [2018-07-25 08:41:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:05,130 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:41:05,130 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:41:05,131 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:41:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:41:05,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:41:05,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:41:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-25 08:41:05,136 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-07-25 08:41:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:05,136 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-25 08:41:05,136 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:41:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-25 08:41:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:41:05,137 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:05,137 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1, 1, 1] [2018-07-25 08:41:05,137 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:05,138 INFO L82 PathProgramCache]: Analyzing trace with hash 779443715, now seen corresponding path program 110 times [2018-07-25 08:41:05,138 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:05,608 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:05,608 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:41:05,608 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:41:05,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:41:05,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:41:05,610 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 113 states. [2018-07-25 08:41:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:05,878 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2018-07-25 08:41:05,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:41:05,878 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 226 [2018-07-25 08:41:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:05,879 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:41:05,879 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:41:05,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:41:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:41:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:41:05,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:41:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 08:41:05,882 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-07-25 08:41:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:05,883 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 08:41:05,883 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:41:05,883 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 08:41:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:41:05,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:05,884 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1, 1, 1] [2018-07-25 08:41:05,884 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:05,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1637542399, now seen corresponding path program 111 times [2018-07-25 08:41:05,885 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:06,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:06,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:41:06,336 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:41:06,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:41:06,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:41:06,338 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 114 states. [2018-07-25 08:41:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:06,614 INFO L93 Difference]: Finished difference Result 235 states and 237 transitions. [2018-07-25 08:41:06,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:41:06,614 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 228 [2018-07-25 08:41:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:06,614 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:41:06,615 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:41:06,616 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:41:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:41:06,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:41:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:41:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 08:41:06,620 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-07-25 08:41:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:06,621 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 08:41:06,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:41:06,621 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 08:41:06,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:41:06,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:06,622 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1, 1, 1] [2018-07-25 08:41:06,622 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:06,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1636656891, now seen corresponding path program 112 times [2018-07-25 08:41:06,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:07,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:07,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:41:07,092 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:41:07,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:41:07,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:41:07,094 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 115 states. [2018-07-25 08:41:07,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:07,350 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2018-07-25 08:41:07,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:41:07,351 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 230 [2018-07-25 08:41:07,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:07,351 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:41:07,351 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:41:07,352 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:41:07,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:41:07,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:41:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:41:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-25 08:41:07,356 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 230 [2018-07-25 08:41:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:07,357 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-25 08:41:07,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:41:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-25 08:41:07,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:41:07,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:07,358 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1, 1, 1] [2018-07-25 08:41:07,358 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:07,359 INFO L82 PathProgramCache]: Analyzing trace with hash 785683703, now seen corresponding path program 113 times [2018-07-25 08:41:07,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:07,956 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:07,956 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:41:07,956 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:41:07,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:41:07,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:41:07,959 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 116 states. [2018-07-25 08:41:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:08,147 INFO L93 Difference]: Finished difference Result 239 states and 241 transitions. [2018-07-25 08:41:08,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:41:08,147 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 232 [2018-07-25 08:41:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:08,147 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:41:08,148 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:41:08,149 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:41:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:41:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:41:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:41:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 08:41:08,153 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-07-25 08:41:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:08,154 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 08:41:08,154 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:41:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 08:41:08,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:41:08,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:08,155 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1, 1, 1] [2018-07-25 08:41:08,155 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:08,155 INFO L82 PathProgramCache]: Analyzing trace with hash -955763725, now seen corresponding path program 114 times [2018-07-25 08:41:08,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:08,609 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:08,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:41:08,610 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:41:08,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:41:08,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:41:08,611 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 117 states. [2018-07-25 08:41:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:08,837 INFO L93 Difference]: Finished difference Result 241 states and 243 transitions. [2018-07-25 08:41:08,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:41:08,837 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 234 [2018-07-25 08:41:08,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:08,838 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:41:08,838 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:41:08,839 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:41:08,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:41:08,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:41:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:41:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-25 08:41:08,842 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-25 08:41:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:08,842 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-25 08:41:08,842 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:41:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-25 08:41:08,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:41:08,843 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:08,843 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1, 1, 1] [2018-07-25 08:41:08,843 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:08,843 INFO L82 PathProgramCache]: Analyzing trace with hash 550503407, now seen corresponding path program 115 times [2018-07-25 08:41:08,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:09,334 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:09,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:41:09,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:41:09,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:41:09,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:41:09,337 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 118 states. [2018-07-25 08:41:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:09,501 INFO L93 Difference]: Finished difference Result 243 states and 245 transitions. [2018-07-25 08:41:09,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:41:09,501 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 236 [2018-07-25 08:41:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:09,502 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:41:09,502 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:41:09,503 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:41:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:41:09,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:41:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:41:09,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-07-25 08:41:09,509 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 236 [2018-07-25 08:41:09,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:09,509 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-07-25 08:41:09,509 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:41:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-07-25 08:41:09,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:41:09,511 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:09,511 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1, 1, 1] [2018-07-25 08:41:09,511 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:09,511 INFO L82 PathProgramCache]: Analyzing trace with hash 669238507, now seen corresponding path program 116 times [2018-07-25 08:41:09,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:10,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:10,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:41:10,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:41:10,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:41:10,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:41:10,104 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 119 states. [2018-07-25 08:41:10,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:10,279 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2018-07-25 08:41:10,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:41:10,279 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 238 [2018-07-25 08:41:10,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:10,279 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:41:10,279 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:41:10,281 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:41:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:41:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:41:10,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:41:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-25 08:41:10,285 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 238 [2018-07-25 08:41:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:10,285 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-25 08:41:10,285 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:41:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-25 08:41:10,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:41:10,286 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:10,286 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1, 1, 1] [2018-07-25 08:41:10,287 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:10,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1190447385, now seen corresponding path program 117 times [2018-07-25 08:41:10,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:10,802 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:10,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:41:10,802 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:41:10,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:41:10,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:41:10,804 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 120 states. [2018-07-25 08:41:11,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:11,122 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2018-07-25 08:41:11,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:41:11,122 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 240 [2018-07-25 08:41:11,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:11,123 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:41:11,123 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:41:11,124 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:41:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:41:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:41:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:41:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 08:41:11,127 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-25 08:41:11,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:11,128 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 08:41:11,128 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:41:11,128 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 08:41:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:41:11,129 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:11,129 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1, 1, 1] [2018-07-25 08:41:11,129 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:11,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1642194461, now seen corresponding path program 118 times [2018-07-25 08:41:11,130 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:11,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:11,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:41:11,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:41:11,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:41:11,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:41:11,678 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 121 states. [2018-07-25 08:41:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:11,960 INFO L93 Difference]: Finished difference Result 249 states and 251 transitions. [2018-07-25 08:41:11,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:41:11,960 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 242 [2018-07-25 08:41:11,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:11,961 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:41:11,961 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:41:11,962 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:41:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:41:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:41:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:41:11,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-07-25 08:41:11,965 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-07-25 08:41:11,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:11,965 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-07-25 08:41:11,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:41:11,965 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-07-25 08:41:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:41:11,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:11,966 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1, 1, 1] [2018-07-25 08:41:11,966 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:11,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1979437601, now seen corresponding path program 119 times [2018-07-25 08:41:11,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:12,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:12,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:41:12,585 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:41:12,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:41:12,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:41:12,587 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 122 states. [2018-07-25 08:41:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:12,685 INFO L93 Difference]: Finished difference Result 251 states and 253 transitions. [2018-07-25 08:41:12,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:41:12,685 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 244 [2018-07-25 08:41:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:12,686 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:41:12,686 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:41:12,687 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:41:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:41:12,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:41:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:41:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-25 08:41:12,692 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 244 [2018-07-25 08:41:12,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:12,692 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-25 08:41:12,692 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:41:12,692 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-25 08:41:12,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:41:12,693 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:12,693 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1, 1, 1] [2018-07-25 08:41:12,693 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:12,693 INFO L82 PathProgramCache]: Analyzing trace with hash 347419355, now seen corresponding path program 120 times [2018-07-25 08:41:12,693 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:13,201 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:13,202 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:41:13,202 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:41:13,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:41:13,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:41:13,205 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 123 states. [2018-07-25 08:41:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:13,489 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2018-07-25 08:41:13,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:41:13,489 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 246 [2018-07-25 08:41:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:13,490 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:41:13,490 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:41:13,490 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:41:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:41:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:41:13,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:41:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-25 08:41:13,495 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-07-25 08:41:13,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:13,495 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-25 08:41:13,495 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:41:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-25 08:41:13,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:41:13,497 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:13,497 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1, 1, 1] [2018-07-25 08:41:13,497 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:13,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1221007145, now seen corresponding path program 121 times [2018-07-25 08:41:13,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:13,988 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:13,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:41:13,988 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:41:13,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:41:13,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:41:13,990 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 124 states. [2018-07-25 08:41:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:14,280 INFO L93 Difference]: Finished difference Result 255 states and 257 transitions. [2018-07-25 08:41:14,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:41:14,280 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 248 [2018-07-25 08:41:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:14,281 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:41:14,281 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:41:14,282 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:41:14,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:41:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 08:41:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:41:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-25 08:41:14,285 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-07-25 08:41:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:14,286 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-25 08:41:14,286 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:41:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-25 08:41:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:41:14,287 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:14,287 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1, 1, 1] [2018-07-25 08:41:14,288 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash -945352749, now seen corresponding path program 122 times [2018-07-25 08:41:14,288 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:14,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:14,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:41:14,870 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:41:14,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:41:14,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:41:14,872 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 125 states. [2018-07-25 08:41:15,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:15,155 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2018-07-25 08:41:15,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:41:15,155 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 250 [2018-07-25 08:41:15,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:15,156 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:41:15,156 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:41:15,157 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:41:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:41:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:41:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:41:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-25 08:41:15,160 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-07-25 08:41:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:15,160 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-25 08:41:15,160 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:41:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-25 08:41:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:41:15,161 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:15,161 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1, 1, 1] [2018-07-25 08:41:15,161 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:15,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1965516751, now seen corresponding path program 123 times [2018-07-25 08:41:15,161 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:15,656 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:15,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:41:15,656 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:41:15,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:41:15,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:41:15,658 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 126 states. [2018-07-25 08:41:15,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:15,933 INFO L93 Difference]: Finished difference Result 259 states and 261 transitions. [2018-07-25 08:41:15,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:41:15,934 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 252 [2018-07-25 08:41:15,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:15,934 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:41:15,934 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:41:15,936 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:41:15,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:41:15,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 08:41:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:41:15,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-25 08:41:15,939 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-07-25 08:41:15,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:15,939 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-25 08:41:15,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:41:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-25 08:41:15,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:41:15,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:15,940 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1, 1, 1] [2018-07-25 08:41:15,940 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:15,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1007570741, now seen corresponding path program 124 times [2018-07-25 08:41:15,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:16,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:16,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:41:16,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:41:16,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:41:16,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:41:16,516 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 127 states. [2018-07-25 08:41:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:16,810 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2018-07-25 08:41:16,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:41:16,810 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 254 [2018-07-25 08:41:16,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:16,811 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:41:16,811 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:41:16,812 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:41:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:41:16,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:41:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:41:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-07-25 08:41:16,816 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 254 [2018-07-25 08:41:16,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:16,817 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-07-25 08:41:16,817 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:41:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-07-25 08:41:16,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:41:16,818 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:16,818 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1, 1, 1] [2018-07-25 08:41:16,818 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:16,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1991398713, now seen corresponding path program 125 times [2018-07-25 08:41:16,819 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:17,646 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:17,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:41:17,647 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:41:17,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:41:17,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:41:17,649 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 128 states. [2018-07-25 08:41:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:17,958 INFO L93 Difference]: Finished difference Result 263 states and 265 transitions. [2018-07-25 08:41:17,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:41:17,958 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 256 [2018-07-25 08:41:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:17,959 INFO L225 Difference]: With dead ends: 263 [2018-07-25 08:41:17,959 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:41:17,960 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:41:17,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:41:17,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 08:41:17,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:41:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 08:41:17,965 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-07-25 08:41:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:17,965 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 08:41:17,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:41:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 08:41:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:41:17,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:17,966 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1, 1, 1] [2018-07-25 08:41:17,967 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:17,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1737692611, now seen corresponding path program 126 times [2018-07-25 08:41:17,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:18,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:18,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:41:18,588 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:41:18,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:41:18,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:41:18,591 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 129 states. [2018-07-25 08:41:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:18,965 INFO L93 Difference]: Finished difference Result 265 states and 267 transitions. [2018-07-25 08:41:18,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:41:18,966 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 258 [2018-07-25 08:41:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:18,967 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:41:18,967 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 08:41:18,968 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:41:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 08:41:18,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 08:41:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:41:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-25 08:41:18,971 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-25 08:41:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:18,972 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-25 08:41:18,972 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:41:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-25 08:41:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:41:18,973 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:18,973 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1, 1, 1] [2018-07-25 08:41:18,973 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:18,973 INFO L82 PathProgramCache]: Analyzing trace with hash -903237185, now seen corresponding path program 127 times [2018-07-25 08:41:18,974 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:19,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:19,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:41:19,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:41:19,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:41:19,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:41:19,741 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 130 states. [2018-07-25 08:41:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:19,948 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2018-07-25 08:41:19,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:41:19,949 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 260 [2018-07-25 08:41:19,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:19,949 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:41:19,950 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:41:19,951 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:41:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:41:19,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-25 08:41:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:41:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-07-25 08:41:19,956 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 260 [2018-07-25 08:41:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:19,956 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-07-25 08:41:19,956 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:41:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-07-25 08:41:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:41:19,957 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:19,958 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1, 1, 1] [2018-07-25 08:41:19,958 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:19,958 INFO L82 PathProgramCache]: Analyzing trace with hash -511099205, now seen corresponding path program 128 times [2018-07-25 08:41:19,958 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:20,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:20,517 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:20,517 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:41:20,518 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:41:20,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:41:20,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:41:20,520 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 131 states. [2018-07-25 08:41:20,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:20,808 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2018-07-25 08:41:20,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:41:20,808 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 262 [2018-07-25 08:41:20,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:20,809 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:41:20,809 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:41:20,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:41:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:41:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:41:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:41:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-25 08:41:20,815 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 262 [2018-07-25 08:41:20,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:20,816 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-25 08:41:20,816 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:41:20,816 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-25 08:41:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:41:20,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:20,817 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1, 1, 1] [2018-07-25 08:41:20,817 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:20,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1623622473, now seen corresponding path program 129 times [2018-07-25 08:41:20,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:21,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:21,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:41:21,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:41:21,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:41:21,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:41:21,420 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 132 states. [2018-07-25 08:41:21,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:21,779 INFO L93 Difference]: Finished difference Result 271 states and 273 transitions. [2018-07-25 08:41:21,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:41:21,779 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 264 [2018-07-25 08:41:21,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:21,780 INFO L225 Difference]: With dead ends: 271 [2018-07-25 08:41:21,780 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:41:21,782 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:41:21,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:41:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-25 08:41:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:41:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 08:41:21,786 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-25 08:41:21,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:21,787 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 08:41:21,787 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:41:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 08:41:21,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:41:21,788 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:21,788 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1, 1, 1] [2018-07-25 08:41:21,788 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:21,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1311626317, now seen corresponding path program 130 times [2018-07-25 08:41:21,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:22,381 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:22,381 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:41:22,382 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:41:22,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:41:22,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:41:22,384 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 133 states. [2018-07-25 08:41:22,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:22,514 INFO L93 Difference]: Finished difference Result 273 states and 275 transitions. [2018-07-25 08:41:22,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:41:22,514 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 266 [2018-07-25 08:41:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:22,515 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:41:22,516 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:41:22,518 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:41:22,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:41:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 08:41:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:41:22,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-07-25 08:41:22,522 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-07-25 08:41:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:22,523 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-07-25 08:41:22,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:41:22,523 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-07-25 08:41:22,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:41:22,524 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:22,524 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1, 1, 1] [2018-07-25 08:41:22,525 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:22,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2131031121, now seen corresponding path program 131 times [2018-07-25 08:41:22,525 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:23,141 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:23,141 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:41:23,141 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:41:23,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:41:23,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:41:23,144 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 134 states. [2018-07-25 08:41:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:23,536 INFO L93 Difference]: Finished difference Result 275 states and 277 transitions. [2018-07-25 08:41:23,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:41:23,536 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 268 [2018-07-25 08:41:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:23,537 INFO L225 Difference]: With dead ends: 275 [2018-07-25 08:41:23,537 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:41:23,538 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:41:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:41:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 08:41:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:41:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-25 08:41:23,541 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 268 [2018-07-25 08:41:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:23,542 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-25 08:41:23,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:41:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-25 08:41:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:41:23,542 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:23,542 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1, 1, 1] [2018-07-25 08:41:23,543 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash 694934699, now seen corresponding path program 132 times [2018-07-25 08:41:23,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:24,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:24,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:41:24,232 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:41:24,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:41:24,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:41:24,235 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 135 states. [2018-07-25 08:41:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:24,628 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2018-07-25 08:41:24,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:41:24,628 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 270 [2018-07-25 08:41:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:24,629 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:41:24,629 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:41:24,630 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:41:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:41:24,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:41:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:41:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-25 08:41:24,635 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-07-25 08:41:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:24,635 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-25 08:41:24,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:41:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-25 08:41:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:41:24,636 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:24,636 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1, 1, 1] [2018-07-25 08:41:24,636 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:24,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2028756647, now seen corresponding path program 133 times [2018-07-25 08:41:24,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:25,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:25,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:41:25,405 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:41:25,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:41:25,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:41:25,409 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 136 states. [2018-07-25 08:41:25,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:25,893 INFO L93 Difference]: Finished difference Result 279 states and 281 transitions. [2018-07-25 08:41:25,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:41:25,893 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 272 [2018-07-25 08:41:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:25,893 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:41:25,894 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:41:25,895 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:41:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:41:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-25 08:41:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:41:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-25 08:41:25,898 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-07-25 08:41:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:25,898 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-25 08:41:25,898 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:41:25,898 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-25 08:41:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:41:25,899 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:25,899 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1, 1, 1] [2018-07-25 08:41:25,899 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:25,899 INFO L82 PathProgramCache]: Analyzing trace with hash -363572829, now seen corresponding path program 134 times [2018-07-25 08:41:25,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:26,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:26,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:41:26,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:41:26,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:41:26,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:41:26,667 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 137 states. [2018-07-25 08:41:27,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:27,134 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2018-07-25 08:41:27,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:41:27,135 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 274 [2018-07-25 08:41:27,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:27,135 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:41:27,135 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:41:27,136 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:41:27,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:41:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:41:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:41:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-25 08:41:27,139 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-07-25 08:41:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:27,139 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-25 08:41:27,139 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:41:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-25 08:41:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:41:27,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:27,140 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1, 1, 1] [2018-07-25 08:41:27,140 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:27,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1584695905, now seen corresponding path program 135 times [2018-07-25 08:41:27,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:27,856 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:27,856 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:41:27,856 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:41:27,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:41:27,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:41:27,859 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 138 states. [2018-07-25 08:41:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:28,174 INFO L93 Difference]: Finished difference Result 283 states and 285 transitions. [2018-07-25 08:41:28,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:41:28,174 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 276 [2018-07-25 08:41:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:28,175 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:41:28,175 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:41:28,177 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:41:28,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:41:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-25 08:41:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:41:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-25 08:41:28,182 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-07-25 08:41:28,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:28,182 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-25 08:41:28,182 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:41:28,182 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-25 08:41:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:41:28,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:28,184 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1, 1, 1] [2018-07-25 08:41:28,184 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:28,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1737067163, now seen corresponding path program 136 times [2018-07-25 08:41:28,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:28,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:28,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:41:28,974 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:41:28,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:41:28,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:41:28,976 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 139 states. [2018-07-25 08:41:29,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:29,173 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2018-07-25 08:41:29,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:41:29,173 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 278 [2018-07-25 08:41:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:29,173 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:41:29,174 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:41:29,175 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:41:29,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:41:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 08:41:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:41:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2018-07-25 08:41:29,178 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 278 [2018-07-25 08:41:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:29,178 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2018-07-25 08:41:29,178 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:41:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2018-07-25 08:41:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:41:29,179 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:29,179 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1, 1, 1] [2018-07-25 08:41:29,179 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:29,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1504292713, now seen corresponding path program 137 times [2018-07-25 08:41:29,180 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:29,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:29,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:41:29,872 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:41:29,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:41:29,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:41:29,875 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 140 states. [2018-07-25 08:41:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:30,061 INFO L93 Difference]: Finished difference Result 287 states and 289 transitions. [2018-07-25 08:41:30,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:41:30,061 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 280 [2018-07-25 08:41:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:30,062 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:41:30,062 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:41:30,064 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:41:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:41:30,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 08:41:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:41:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 08:41:30,067 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 280 [2018-07-25 08:41:30,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:30,067 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 08:41:30,067 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:41:30,067 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 08:41:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:41:30,068 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:30,068 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1, 1, 1] [2018-07-25 08:41:30,068 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1695123347, now seen corresponding path program 138 times [2018-07-25 08:41:30,068 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:30,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:30,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:41:30,774 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:41:30,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:41:30,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:41:30,777 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 141 states. [2018-07-25 08:41:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:30,952 INFO L93 Difference]: Finished difference Result 289 states and 291 transitions. [2018-07-25 08:41:30,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:41:30,953 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 282 [2018-07-25 08:41:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:30,953 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:41:30,953 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 08:41:30,955 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:41:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 08:41:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 08:41:30,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:41:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-25 08:41:30,958 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-25 08:41:30,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:30,958 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-25 08:41:30,958 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:41:30,958 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-25 08:41:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:41:30,959 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:30,959 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1, 1, 1] [2018-07-25 08:41:30,959 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:30,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1137373071, now seen corresponding path program 139 times [2018-07-25 08:41:30,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:31,709 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:31,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:41:31,709 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:41:31,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:41:31,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:41:31,712 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 142 states. [2018-07-25 08:41:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:31,968 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2018-07-25 08:41:31,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:41:31,968 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 284 [2018-07-25 08:41:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:31,969 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:41:31,969 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:41:31,970 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:41:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:41:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-25 08:41:31,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:41:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-07-25 08:41:31,973 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 284 [2018-07-25 08:41:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:31,973 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-07-25 08:41:31,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:41:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-07-25 08:41:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:41:31,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:31,974 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1, 1, 1] [2018-07-25 08:41:31,975 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:31,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2010269835, now seen corresponding path program 140 times [2018-07-25 08:41:31,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:32,707 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:32,707 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:41:32,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:41:32,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:41:32,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:41:32,710 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 143 states. [2018-07-25 08:41:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:33,015 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2018-07-25 08:41:33,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:41:33,015 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 286 [2018-07-25 08:41:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:33,016 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:41:33,016 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:41:33,018 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:41:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:41:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:41:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:41:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-25 08:41:33,022 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 286 [2018-07-25 08:41:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:33,022 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-25 08:41:33,022 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:41:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-25 08:41:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:41:33,023 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:33,023 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1, 1, 1] [2018-07-25 08:41:33,024 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:33,024 INFO L82 PathProgramCache]: Analyzing trace with hash -949529977, now seen corresponding path program 141 times [2018-07-25 08:41:33,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:33,840 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:33,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:41:33,840 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:41:33,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:41:33,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:41:33,843 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 144 states. [2018-07-25 08:41:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:34,352 INFO L93 Difference]: Finished difference Result 295 states and 297 transitions. [2018-07-25 08:41:34,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:41:34,352 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 288 [2018-07-25 08:41:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:34,353 INFO L225 Difference]: With dead ends: 295 [2018-07-25 08:41:34,353 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:41:34,354 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:41:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:41:34,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-25 08:41:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:41:34,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 08:41:34,357 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-25 08:41:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:34,357 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 08:41:34,358 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:41:34,358 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 08:41:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:41:34,358 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:34,358 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1, 1, 1] [2018-07-25 08:41:34,359 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:34,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2048799357, now seen corresponding path program 142 times [2018-07-25 08:41:34,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:35,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:35,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:41:35,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:41:35,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:41:35,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:41:35,105 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 145 states. [2018-07-25 08:41:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:35,691 INFO L93 Difference]: Finished difference Result 297 states and 299 transitions. [2018-07-25 08:41:35,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:41:35,691 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 290 [2018-07-25 08:41:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:35,692 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:41:35,692 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:41:35,693 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:41:35,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:41:35,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 08:41:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:41:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2018-07-25 08:41:35,697 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2018-07-25 08:41:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:35,697 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2018-07-25 08:41:35,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:41:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2018-07-25 08:41:35,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:41:35,698 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:35,698 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1, 1, 1] [2018-07-25 08:41:35,698 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:35,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1884718721, now seen corresponding path program 143 times [2018-07-25 08:41:35,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:36,423 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:36,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:41:36,423 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:41:36,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:41:36,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:41:36,426 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand 146 states. [2018-07-25 08:41:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:36,947 INFO L93 Difference]: Finished difference Result 299 states and 301 transitions. [2018-07-25 08:41:36,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:41:36,947 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 292 [2018-07-25 08:41:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:36,948 INFO L225 Difference]: With dead ends: 299 [2018-07-25 08:41:36,948 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:41:36,950 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:41:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:41:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 08:41:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:41:36,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-25 08:41:36,953 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 292 [2018-07-25 08:41:36,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:36,954 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-25 08:41:36,954 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:41:36,954 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-25 08:41:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:41:36,954 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:36,955 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1, 1, 1] [2018-07-25 08:41:36,955 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:36,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1177949819, now seen corresponding path program 144 times [2018-07-25 08:41:36,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:37,723 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:37,723 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:41:37,723 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:41:37,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:41:37,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:41:37,727 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 147 states. [2018-07-25 08:41:38,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:38,222 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2018-07-25 08:41:38,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:41:38,223 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 294 [2018-07-25 08:41:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:38,224 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:41:38,224 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 08:41:38,225 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:41:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 08:41:38,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 08:41:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:41:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-25 08:41:38,229 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 294 [2018-07-25 08:41:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:38,229 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-25 08:41:38,229 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:41:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-25 08:41:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:41:38,230 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:38,230 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1, 1, 1] [2018-07-25 08:41:38,230 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:38,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1945148297, now seen corresponding path program 145 times [2018-07-25 08:41:38,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:39,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:39,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:41:39,059 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:41:39,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:41:39,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:41:39,063 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 148 states. [2018-07-25 08:41:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:39,388 INFO L93 Difference]: Finished difference Result 303 states and 305 transitions. [2018-07-25 08:41:39,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:41:39,389 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 296 [2018-07-25 08:41:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:39,390 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:41:39,390 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:41:39,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:41:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:41:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-25 08:41:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:41:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-25 08:41:39,396 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2018-07-25 08:41:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:39,396 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-25 08:41:39,396 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:41:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-25 08:41:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:41:39,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:39,397 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1, 1, 1] [2018-07-25 08:41:39,397 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:39,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1060297869, now seen corresponding path program 146 times [2018-07-25 08:41:39,398 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:40,273 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:40,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:41:40,274 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:41:40,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:41:40,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:41:40,277 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 149 states. [2018-07-25 08:41:40,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:40,938 INFO L93 Difference]: Finished difference Result 305 states and 307 transitions. [2018-07-25 08:41:40,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:41:40,938 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 298 [2018-07-25 08:41:40,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:40,940 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:41:40,940 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:41:40,942 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:41:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:41:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:41:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:41:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-25 08:41:40,947 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 298 [2018-07-25 08:41:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:40,947 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-25 08:41:40,947 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:41:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-25 08:41:40,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:41:40,949 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:40,949 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1, 1, 1] [2018-07-25 08:41:40,949 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:40,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1122561169, now seen corresponding path program 147 times [2018-07-25 08:41:40,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:41,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:41,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:41:41,887 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:41:41,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:41:41,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:41:41,890 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 150 states. [2018-07-25 08:41:42,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:42,584 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2018-07-25 08:41:42,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:41:42,584 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 300 [2018-07-25 08:41:42,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:42,585 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:41:42,585 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:41:42,587 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:41:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:41:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-25 08:41:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:41:42,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-25 08:41:42,590 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 300 [2018-07-25 08:41:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:42,591 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-25 08:41:42,591 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:41:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-25 08:41:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:41:42,592 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:42,592 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1, 1, 1] [2018-07-25 08:41:42,592 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:42,592 INFO L82 PathProgramCache]: Analyzing trace with hash -828050325, now seen corresponding path program 148 times [2018-07-25 08:41:42,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:43,576 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:43,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:41:43,577 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:41:43,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:41:43,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:41:43,578 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 151 states. [2018-07-25 08:41:43,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:43,762 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2018-07-25 08:41:43,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:41:43,763 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 302 [2018-07-25 08:41:43,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:43,763 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:41:43,763 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:41:43,764 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:41:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:41:43,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 08:41:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:41:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-07-25 08:41:43,767 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 302 [2018-07-25 08:41:43,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:43,767 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-07-25 08:41:43,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:41:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-07-25 08:41:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:41:43,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:43,768 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1, 1, 1] [2018-07-25 08:41:43,769 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:43,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1270970777, now seen corresponding path program 149 times [2018-07-25 08:41:43,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:44,634 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:44,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:41:44,635 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:41:44,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:41:44,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:41:44,639 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 152 states. [2018-07-25 08:41:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:45,337 INFO L93 Difference]: Finished difference Result 311 states and 313 transitions. [2018-07-25 08:41:45,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:41:45,338 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 304 [2018-07-25 08:41:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:45,338 INFO L225 Difference]: With dead ends: 311 [2018-07-25 08:41:45,338 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:41:45,340 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:41:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:41:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 08:41:45,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:41:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 08:41:45,344 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 304 [2018-07-25 08:41:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:45,344 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 08:41:45,344 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:41:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 08:41:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:41:45,345 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:45,345 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1, 1, 1] [2018-07-25 08:41:45,346 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:45,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1715762845, now seen corresponding path program 150 times [2018-07-25 08:41:45,346 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:46,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:46,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:41:46,192 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:41:46,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:41:46,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:41:46,195 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 153 states. [2018-07-25 08:41:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:46,720 INFO L93 Difference]: Finished difference Result 313 states and 315 transitions. [2018-07-25 08:41:46,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:41:46,720 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 306 [2018-07-25 08:41:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:46,721 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:41:46,721 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 08:41:46,723 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:41:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 08:41:46,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 08:41:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:41:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-25 08:41:46,726 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-25 08:41:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:46,726 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-25 08:41:46,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:41:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-25 08:41:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:41:46,727 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:46,727 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1, 1, 1] [2018-07-25 08:41:46,727 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:46,727 INFO L82 PathProgramCache]: Analyzing trace with hash 335789407, now seen corresponding path program 151 times [2018-07-25 08:41:46,728 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:47,640 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:47,640 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:41:47,641 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:41:47,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:41:47,642 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:41:47,642 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 154 states. [2018-07-25 08:41:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:48,237 INFO L93 Difference]: Finished difference Result 315 states and 317 transitions. [2018-07-25 08:41:48,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:41:48,237 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 308 [2018-07-25 08:41:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:48,238 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:41:48,238 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:41:48,239 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:41:48,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:41:48,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-25 08:41:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:41:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-07-25 08:41:48,244 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 308 [2018-07-25 08:41:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:48,245 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-07-25 08:41:48,245 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:41:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-07-25 08:41:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:41:48,246 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:48,246 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1, 1, 1] [2018-07-25 08:41:48,246 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:48,247 INFO L82 PathProgramCache]: Analyzing trace with hash 487514715, now seen corresponding path program 152 times [2018-07-25 08:41:48,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:49,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:49,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:41:49,143 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:41:49,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:41:49,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:41:49,147 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 155 states. [2018-07-25 08:41:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:49,796 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2018-07-25 08:41:49,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:41:49,796 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 310 [2018-07-25 08:41:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:49,797 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:41:49,797 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:41:49,799 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:41:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:41:49,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:41:49,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:41:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-25 08:41:49,802 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 310 [2018-07-25 08:41:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:49,803 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-25 08:41:49,803 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:41:49,803 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-25 08:41:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:41:49,803 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:49,804 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1, 1, 1] [2018-07-25 08:41:49,804 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:49,804 INFO L82 PathProgramCache]: Analyzing trace with hash 266647639, now seen corresponding path program 153 times [2018-07-25 08:41:49,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:50,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:50,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:41:50,748 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:41:50,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:41:50,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:41:50,752 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 156 states. [2018-07-25 08:41:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:51,532 INFO L93 Difference]: Finished difference Result 319 states and 321 transitions. [2018-07-25 08:41:51,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:41:51,532 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 312 [2018-07-25 08:41:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:51,533 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:41:51,533 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:41:51,535 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:41:51,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:41:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-25 08:41:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:41:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 08:41:51,538 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-25 08:41:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:51,539 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 08:41:51,539 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:41:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 08:41:51,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:41:51,540 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:51,540 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1, 1, 1] [2018-07-25 08:41:51,540 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:51,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1533214893, now seen corresponding path program 154 times [2018-07-25 08:41:51,540 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:52,535 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:52,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:52,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:41:52,535 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:41:52,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:41:52,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:41:52,537 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 157 states. [2018-07-25 08:41:52,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:52,944 INFO L93 Difference]: Finished difference Result 321 states and 323 transitions. [2018-07-25 08:41:52,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:41:52,944 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 314 [2018-07-25 08:41:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:52,944 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:41:52,944 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:41:52,945 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:41:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:41:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 08:41:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:41:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2018-07-25 08:41:52,948 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 314 [2018-07-25 08:41:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:52,949 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2018-07-25 08:41:52,949 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:41:52,949 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2018-07-25 08:41:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:41:52,950 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:52,950 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1, 1, 1] [2018-07-25 08:41:52,951 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:52,951 INFO L82 PathProgramCache]: Analyzing trace with hash -329287857, now seen corresponding path program 155 times [2018-07-25 08:41:52,951 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:53,934 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:53,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:41:53,934 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:41:53,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:41:53,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:41:53,938 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand 158 states. [2018-07-25 08:41:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:54,871 INFO L93 Difference]: Finished difference Result 323 states and 325 transitions. [2018-07-25 08:41:54,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:41:54,871 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 316 [2018-07-25 08:41:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:54,872 INFO L225 Difference]: With dead ends: 323 [2018-07-25 08:41:54,872 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:41:54,874 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:41:54,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:41:54,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-25 08:41:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:41:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-07-25 08:41:54,879 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 316 [2018-07-25 08:41:54,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:54,880 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-07-25 08:41:54,880 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:41:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-07-25 08:41:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:41:54,881 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:54,882 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1, 1, 1] [2018-07-25 08:41:54,882 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:54,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1298391115, now seen corresponding path program 156 times [2018-07-25 08:41:54,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:55,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:55,990 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:41:55,990 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:41:55,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:41:55,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:41:55,994 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 159 states. [2018-07-25 08:41:56,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:56,355 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2018-07-25 08:41:56,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:41:56,355 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 318 [2018-07-25 08:41:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:56,356 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:41:56,356 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 08:41:56,358 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:41:56,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 08:41:56,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 08:41:56,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:41:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-25 08:41:56,361 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 318 [2018-07-25 08:41:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:56,361 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-25 08:41:56,362 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:41:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-25 08:41:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:41:56,363 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:56,363 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1, 1, 1] [2018-07-25 08:41:56,363 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:56,363 INFO L82 PathProgramCache]: Analyzing trace with hash 2129787463, now seen corresponding path program 157 times [2018-07-25 08:41:56,363 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:57,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:57,354 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:41:57,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:41:57,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:41:57,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:41:57,356 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 160 states. [2018-07-25 08:41:58,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:41:58,004 INFO L93 Difference]: Finished difference Result 327 states and 329 transitions. [2018-07-25 08:41:58,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:41:58,004 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 320 [2018-07-25 08:41:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:41:58,005 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:41:58,005 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:41:58,006 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:41:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:41:58,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-25 08:41:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:41:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-07-25 08:41:58,009 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 320 [2018-07-25 08:41:58,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:41:58,009 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-07-25 08:41:58,009 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:41:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-07-25 08:41:58,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:41:58,010 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:41:58,010 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1, 1, 1] [2018-07-25 08:41:58,010 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:41:58,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2057206461, now seen corresponding path program 158 times [2018-07-25 08:41:58,010 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:41:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:41:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:41:59,021 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:41:59,021 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:41:59,021 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:41:59,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:41:59,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:41:59,025 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 161 states. [2018-07-25 08:42:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:00,161 INFO L93 Difference]: Finished difference Result 329 states and 331 transitions. [2018-07-25 08:42:00,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:42:00,161 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 322 [2018-07-25 08:42:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:00,162 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:42:00,162 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:42:00,166 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:42:00,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:42:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 08:42:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:42:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-25 08:42:00,169 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 322 [2018-07-25 08:42:00,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:00,170 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-25 08:42:00,170 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:42:00,170 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-25 08:42:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:42:00,171 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:00,171 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1, 1, 1] [2018-07-25 08:42:00,171 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:00,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1374011073, now seen corresponding path program 159 times [2018-07-25 08:42:00,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:01,236 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:01,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:42:01,237 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:42:01,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:42:01,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:42:01,240 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 162 states. [2018-07-25 08:42:01,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:01,914 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2018-07-25 08:42:01,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:42:01,914 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 324 [2018-07-25 08:42:01,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:01,914 INFO L225 Difference]: With dead ends: 331 [2018-07-25 08:42:01,915 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:42:01,916 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:42:01,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:42:01,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-25 08:42:01,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:42:01,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-07-25 08:42:01,920 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 324 [2018-07-25 08:42:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:01,920 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-07-25 08:42:01,920 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:42:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-07-25 08:42:01,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:42:01,921 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:01,921 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1, 1, 1] [2018-07-25 08:42:01,922 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:01,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1953239493, now seen corresponding path program 160 times [2018-07-25 08:42:01,922 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:02,947 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:02,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:42:02,947 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:42:02,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:42:02,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:42:02,949 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 163 states. [2018-07-25 08:42:03,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:03,200 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2018-07-25 08:42:03,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:42:03,200 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 326 [2018-07-25 08:42:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:03,201 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:42:03,201 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 08:42:03,202 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:42:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 08:42:03,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 08:42:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:42:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2018-07-25 08:42:03,205 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 326 [2018-07-25 08:42:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:03,206 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2018-07-25 08:42:03,206 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:42:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2018-07-25 08:42:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:42:03,207 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:03,207 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1, 1, 1] [2018-07-25 08:42:03,208 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:03,208 INFO L82 PathProgramCache]: Analyzing trace with hash -246002633, now seen corresponding path program 161 times [2018-07-25 08:42:03,208 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:04,201 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:04,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:42:04,201 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:42:04,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:42:04,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:42:04,205 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand 164 states. [2018-07-25 08:42:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:04,871 INFO L93 Difference]: Finished difference Result 335 states and 337 transitions. [2018-07-25 08:42:04,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:42:04,871 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 328 [2018-07-25 08:42:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:04,872 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:42:04,872 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:42:04,874 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:42:04,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:42:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 08:42:04,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:42:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-25 08:42:04,877 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 328 [2018-07-25 08:42:04,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:04,878 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-25 08:42:04,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:42:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-25 08:42:04,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:42:04,879 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:04,879 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1, 1, 1] [2018-07-25 08:42:04,879 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:04,879 INFO L82 PathProgramCache]: Analyzing trace with hash -268887245, now seen corresponding path program 162 times [2018-07-25 08:42:04,879 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:05,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:05,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:42:05,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:42:05,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:42:05,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:42:05,894 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 165 states. [2018-07-25 08:42:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:06,756 INFO L93 Difference]: Finished difference Result 337 states and 339 transitions. [2018-07-25 08:42:06,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:42:06,756 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 330 [2018-07-25 08:42:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:06,757 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:42:06,757 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 08:42:06,758 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:42:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 08:42:06,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 08:42:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:42:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-25 08:42:06,762 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-25 08:42:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:06,762 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-25 08:42:06,762 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:42:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-25 08:42:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:42:06,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:06,763 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1, 1, 1] [2018-07-25 08:42:06,763 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:06,763 INFO L82 PathProgramCache]: Analyzing trace with hash -786162897, now seen corresponding path program 163 times [2018-07-25 08:42:06,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:07,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:07,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:42:07,861 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:42:07,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:42:07,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:42:07,865 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 166 states. [2018-07-25 08:42:08,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:08,804 INFO L93 Difference]: Finished difference Result 339 states and 341 transitions. [2018-07-25 08:42:08,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:42:08,804 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 332 [2018-07-25 08:42:08,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:08,805 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:42:08,805 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:42:08,807 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:42:08,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:42:08,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-25 08:42:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:42:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-07-25 08:42:08,812 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 332 [2018-07-25 08:42:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:08,812 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-07-25 08:42:08,812 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:42:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-07-25 08:42:08,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:42:08,814 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:08,814 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1, 1, 1] [2018-07-25 08:42:08,814 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:08,814 INFO L82 PathProgramCache]: Analyzing trace with hash 328141867, now seen corresponding path program 164 times [2018-07-25 08:42:08,814 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:10,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:10,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:42:10,023 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:42:10,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:42:10,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:42:10,027 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 167 states. [2018-07-25 08:42:11,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:11,094 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2018-07-25 08:42:11,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:42:11,094 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 334 [2018-07-25 08:42:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:11,094 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:42:11,095 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:42:11,096 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:42:11,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:42:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 08:42:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:42:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-25 08:42:11,100 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 334 [2018-07-25 08:42:11,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:11,100 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-25 08:42:11,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:42:11,100 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-25 08:42:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:42:11,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:11,101 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1, 1, 1] [2018-07-25 08:42:11,101 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:11,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1728163367, now seen corresponding path program 165 times [2018-07-25 08:42:11,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:12,235 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:12,235 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:42:12,235 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:42:12,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:42:12,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:42:12,237 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 168 states. [2018-07-25 08:42:13,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:13,210 INFO L93 Difference]: Finished difference Result 343 states and 345 transitions. [2018-07-25 08:42:13,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:42:13,210 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 336 [2018-07-25 08:42:13,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:13,211 INFO L225 Difference]: With dead ends: 343 [2018-07-25 08:42:13,211 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:42:13,212 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:42:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:42:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-25 08:42:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:42:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-25 08:42:13,217 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-25 08:42:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:13,217 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-25 08:42:13,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:42:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-25 08:42:13,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:42:13,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:13,219 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1, 1, 1] [2018-07-25 08:42:13,219 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:13,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1470906077, now seen corresponding path program 166 times [2018-07-25 08:42:13,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:14,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:14,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:42:14,409 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:42:14,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:42:14,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:42:14,413 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 169 states. [2018-07-25 08:42:15,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:15,703 INFO L93 Difference]: Finished difference Result 345 states and 347 transitions. [2018-07-25 08:42:15,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:42:15,703 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 338 [2018-07-25 08:42:15,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:15,704 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:42:15,704 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 08:42:15,706 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:42:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 08:42:15,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 08:42:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:42:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2018-07-25 08:42:15,709 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 338 [2018-07-25 08:42:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:15,709 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2018-07-25 08:42:15,709 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:42:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2018-07-25 08:42:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:42:15,710 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:15,711 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1, 1, 1] [2018-07-25 08:42:15,711 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:15,711 INFO L82 PathProgramCache]: Analyzing trace with hash -580057825, now seen corresponding path program 167 times [2018-07-25 08:42:15,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:16,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:16,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:42:16,840 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:42:16,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:42:16,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:42:16,845 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand 170 states. [2018-07-25 08:42:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:18,333 INFO L93 Difference]: Finished difference Result 347 states and 349 transitions. [2018-07-25 08:42:18,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:42:18,333 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 340 [2018-07-25 08:42:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:18,334 INFO L225 Difference]: With dead ends: 347 [2018-07-25 08:42:18,334 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:42:18,337 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:42:18,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:42:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-25 08:42:18,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:42:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-07-25 08:42:18,341 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 340 [2018-07-25 08:42:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:18,341 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-07-25 08:42:18,341 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:42:18,341 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-07-25 08:42:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:42:18,342 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:18,342 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1, 1, 1] [2018-07-25 08:42:18,342 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:18,342 INFO L82 PathProgramCache]: Analyzing trace with hash 826620443, now seen corresponding path program 168 times [2018-07-25 08:42:18,343 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:19,631 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:19,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:42:19,631 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:42:19,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:42:19,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:42:19,637 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 171 states. [2018-07-25 08:42:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:20,753 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2018-07-25 08:42:20,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:42:20,753 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 342 [2018-07-25 08:42:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:20,754 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:42:20,754 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 08:42:20,756 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:42:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 08:42:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 08:42:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:42:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-25 08:42:20,759 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 342 [2018-07-25 08:42:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:20,759 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-25 08:42:20,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:42:20,759 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-25 08:42:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:42:20,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:20,761 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1, 1, 1] [2018-07-25 08:42:20,761 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash -270262249, now seen corresponding path program 169 times [2018-07-25 08:42:20,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:21,988 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:21,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:42:21,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:42:21,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:42:21,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:42:21,994 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 172 states. [2018-07-25 08:42:23,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:23,372 INFO L93 Difference]: Finished difference Result 351 states and 353 transitions. [2018-07-25 08:42:23,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:42:23,373 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 344 [2018-07-25 08:42:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:23,373 INFO L225 Difference]: With dead ends: 351 [2018-07-25 08:42:23,373 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 08:42:23,375 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:42:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 08:42:23,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-25 08:42:23,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:42:23,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-07-25 08:42:23,379 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 344 [2018-07-25 08:42:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:23,379 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-07-25 08:42:23,379 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:42:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-07-25 08:42:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:42:23,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:23,380 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1, 1, 1] [2018-07-25 08:42:23,380 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:23,381 INFO L82 PathProgramCache]: Analyzing trace with hash -2107541741, now seen corresponding path program 170 times [2018-07-25 08:42:23,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:24,636 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:24,636 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:42:24,636 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:42:24,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:42:24,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:42:24,639 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 173 states. [2018-07-25 08:42:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:25,605 INFO L93 Difference]: Finished difference Result 353 states and 355 transitions. [2018-07-25 08:42:25,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:42:25,605 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 346 [2018-07-25 08:42:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:25,605 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:42:25,605 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 08:42:25,606 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:42:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 08:42:25,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 08:42:25,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 08:42:25,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-25 08:42:25,610 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 346 [2018-07-25 08:42:25,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:25,610 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-25 08:42:25,610 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:42:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-25 08:42:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 08:42:25,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:25,611 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1, 1, 1] [2018-07-25 08:42:25,611 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:25,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1793392399, now seen corresponding path program 171 times [2018-07-25 08:42:25,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:26,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:26,811 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:42:26,811 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:42:26,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:42:26,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:42:26,816 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 174 states. [2018-07-25 08:42:27,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:27,463 INFO L93 Difference]: Finished difference Result 355 states and 357 transitions. [2018-07-25 08:42:27,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:42:27,463 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 348 [2018-07-25 08:42:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:27,464 INFO L225 Difference]: With dead ends: 355 [2018-07-25 08:42:27,464 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 08:42:27,466 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:42:27,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 08:42:27,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-07-25 08:42:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:42:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-07-25 08:42:27,471 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 348 [2018-07-25 08:42:27,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:27,472 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-07-25 08:42:27,472 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:42:27,472 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-07-25 08:42:27,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:42:27,473 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:27,474 INFO L354 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1, 1, 1] [2018-07-25 08:42:27,474 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:27,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1084651531, now seen corresponding path program 172 times [2018-07-25 08:42:27,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:28,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:28,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:42:28,753 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:42:28,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:42:28,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:42:28,757 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 175 states. [2018-07-25 08:42:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:29,086 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2018-07-25 08:42:29,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:42:29,086 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 350 [2018-07-25 08:42:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:29,087 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:42:29,087 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 08:42:29,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:42:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 08:42:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 08:42:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 08:42:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2018-07-25 08:42:29,093 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 350 [2018-07-25 08:42:29,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:29,093 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2018-07-25 08:42:29,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:42:29,093 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2018-07-25 08:42:29,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 08:42:29,094 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:29,094 INFO L354 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1, 1, 1] [2018-07-25 08:42:29,095 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:29,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1410489849, now seen corresponding path program 173 times [2018-07-25 08:42:29,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:30,365 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:30,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:42:30,365 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:42:30,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:42:30,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:42:30,370 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand 176 states. [2018-07-25 08:42:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:31,332 INFO L93 Difference]: Finished difference Result 359 states and 361 transitions. [2018-07-25 08:42:31,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:42:31,332 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 352 [2018-07-25 08:42:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:31,333 INFO L225 Difference]: With dead ends: 359 [2018-07-25 08:42:31,333 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:42:31,335 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:42:31,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:42:31,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-07-25 08:42:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:42:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-25 08:42:31,338 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 352 [2018-07-25 08:42:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:31,339 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-25 08:42:31,339 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:42:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-25 08:42:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:42:31,340 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:31,340 INFO L354 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1, 1, 1] [2018-07-25 08:42:31,340 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:31,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1645362435, now seen corresponding path program 174 times [2018-07-25 08:42:31,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:32,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:32,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:42:32,594 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:42:32,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:42:32,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:42:32,598 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 177 states. [2018-07-25 08:42:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:33,867 INFO L93 Difference]: Finished difference Result 361 states and 363 transitions. [2018-07-25 08:42:33,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:42:33,867 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 354 [2018-07-25 08:42:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:33,868 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:42:33,868 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 08:42:33,870 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:42:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 08:42:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 08:42:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 08:42:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-25 08:42:33,873 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-25 08:42:33,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:33,874 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-25 08:42:33,874 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:42:33,874 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-25 08:42:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 08:42:33,875 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:33,875 INFO L354 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1, 1, 1] [2018-07-25 08:42:33,875 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:33,875 INFO L82 PathProgramCache]: Analyzing trace with hash 561776895, now seen corresponding path program 175 times [2018-07-25 08:42:33,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:35,205 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:35,205 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:42:35,205 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:42:35,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:42:35,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:42:35,210 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 178 states. [2018-07-25 08:42:35,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:35,885 INFO L93 Difference]: Finished difference Result 363 states and 365 transitions. [2018-07-25 08:42:35,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:42:35,885 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 356 [2018-07-25 08:42:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:35,885 INFO L225 Difference]: With dead ends: 363 [2018-07-25 08:42:35,886 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 08:42:35,888 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:42:35,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 08:42:35,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-07-25 08:42:35,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 08:42:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-07-25 08:42:35,891 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 356 [2018-07-25 08:42:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:35,891 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-07-25 08:42:35,891 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:42:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-07-25 08:42:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 08:42:35,892 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:35,892 INFO L354 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1, 1, 1] [2018-07-25 08:42:35,893 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:35,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1381841413, now seen corresponding path program 176 times [2018-07-25 08:42:35,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:37,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:37,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:42:37,211 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:42:37,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:42:37,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:42:37,215 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 179 states. [2018-07-25 08:42:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:37,888 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2018-07-25 08:42:37,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:42:37,888 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 358 [2018-07-25 08:42:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:37,889 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:42:37,889 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 08:42:37,891 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:42:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 08:42:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 08:42:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 08:42:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-25 08:42:37,895 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 358 [2018-07-25 08:42:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:37,895 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-25 08:42:37,895 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:42:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-25 08:42:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 08:42:37,896 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:37,896 INFO L354 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1, 1, 1] [2018-07-25 08:42:37,897 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:37,897 INFO L82 PathProgramCache]: Analyzing trace with hash -888261641, now seen corresponding path program 177 times [2018-07-25 08:42:37,897 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:39,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:39,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:42:39,307 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:42:39,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:42:39,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:42:39,310 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 180 states. [2018-07-25 08:42:40,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:40,582 INFO L93 Difference]: Finished difference Result 367 states and 369 transitions. [2018-07-25 08:42:40,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:42:40,582 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 360 [2018-07-25 08:42:40,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:40,583 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:42:40,583 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 08:42:40,584 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:42:40,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 08:42:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-07-25 08:42:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:42:40,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-25 08:42:40,589 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-25 08:42:40,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:40,589 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-25 08:42:40,589 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:42:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-25 08:42:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:42:40,590 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:40,590 INFO L354 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1, 1, 1] [2018-07-25 08:42:40,590 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:40,590 INFO L82 PathProgramCache]: Analyzing trace with hash 995496691, now seen corresponding path program 178 times [2018-07-25 08:42:40,590 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:41,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:41,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:42:41,900 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:42:41,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:42:41,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:42:41,904 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 181 states. [2018-07-25 08:42:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:42,314 INFO L93 Difference]: Finished difference Result 369 states and 371 transitions. [2018-07-25 08:42:42,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:42:42,314 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 362 [2018-07-25 08:42:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:42,315 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:42:42,315 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 08:42:42,317 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:42:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 08:42:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 08:42:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 08:42:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-07-25 08:42:42,322 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 362 [2018-07-25 08:42:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:42,323 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-07-25 08:42:42,323 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:42:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-07-25 08:42:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 08:42:42,324 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:42,325 INFO L354 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1, 1, 1] [2018-07-25 08:42:42,325 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:42,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1188945169, now seen corresponding path program 179 times [2018-07-25 08:42:42,325 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:43,763 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:43,763 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:42:43,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:42:43,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:42:43,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:42:43,766 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 182 states. [2018-07-25 08:42:45,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:45,124 INFO L93 Difference]: Finished difference Result 371 states and 373 transitions. [2018-07-25 08:42:45,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:42:45,124 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 364 [2018-07-25 08:42:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:45,125 INFO L225 Difference]: With dead ends: 371 [2018-07-25 08:42:45,125 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 08:42:45,126 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:42:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 08:42:45,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-07-25 08:42:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 08:42:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-07-25 08:42:45,130 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 364 [2018-07-25 08:42:45,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:45,130 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-07-25 08:42:45,130 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:42:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-07-25 08:42:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 08:42:45,131 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:45,131 INFO L354 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1, 1, 1] [2018-07-25 08:42:45,131 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:45,131 INFO L82 PathProgramCache]: Analyzing trace with hash -198564885, now seen corresponding path program 180 times [2018-07-25 08:42:45,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:46,519 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:46,519 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:42:46,520 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:42:46,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:42:46,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:42:46,525 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 183 states. [2018-07-25 08:42:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:47,142 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2018-07-25 08:42:47,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:42:47,143 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 366 [2018-07-25 08:42:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:47,143 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:42:47,143 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 08:42:47,145 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:42:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 08:42:47,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 08:42:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 08:42:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2018-07-25 08:42:47,149 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 366 [2018-07-25 08:42:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:47,149 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2018-07-25 08:42:47,149 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:42:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2018-07-25 08:42:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 08:42:47,151 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:47,151 INFO L354 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1, 1, 1] [2018-07-25 08:42:47,151 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:47,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1925851673, now seen corresponding path program 181 times [2018-07-25 08:42:47,151 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:48,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:48,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:42:48,631 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:42:48,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:42:48,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:42:48,633 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand 184 states. [2018-07-25 08:42:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:49,996 INFO L93 Difference]: Finished difference Result 375 states and 377 transitions. [2018-07-25 08:42:49,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:42:49,996 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 368 [2018-07-25 08:42:49,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:49,997 INFO L225 Difference]: With dead ends: 375 [2018-07-25 08:42:49,997 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 08:42:49,998 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:42:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 08:42:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-07-25 08:42:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 08:42:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-07-25 08:42:50,001 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 368 [2018-07-25 08:42:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:50,001 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-07-25 08:42:50,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:42:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-07-25 08:42:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 08:42:50,003 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:50,003 INFO L354 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1, 1, 1] [2018-07-25 08:42:50,003 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:50,003 INFO L82 PathProgramCache]: Analyzing trace with hash 303888611, now seen corresponding path program 182 times [2018-07-25 08:42:50,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:51,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:51,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:42:51,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:42:51,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:42:51,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:42:51,420 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 185 states. [2018-07-25 08:42:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:51,897 INFO L93 Difference]: Finished difference Result 377 states and 379 transitions. [2018-07-25 08:42:51,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:42:51,898 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 370 [2018-07-25 08:42:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:51,898 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:42:51,898 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 08:42:51,902 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:42:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 08:42:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 08:42:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 08:42:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 374 transitions. [2018-07-25 08:42:51,906 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 374 transitions. Word has length 370 [2018-07-25 08:42:51,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:51,907 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 374 transitions. [2018-07-25 08:42:51,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:42:51,907 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 374 transitions. [2018-07-25 08:42:51,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 08:42:51,908 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:51,908 INFO L354 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1, 1, 1] [2018-07-25 08:42:51,908 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:51,908 INFO L82 PathProgramCache]: Analyzing trace with hash -104379169, now seen corresponding path program 183 times [2018-07-25 08:42:51,908 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:53,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:53,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:42:53,384 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:42:53,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:42:53,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:42:53,386 INFO L87 Difference]: Start difference. First operand 373 states and 374 transitions. Second operand 186 states. [2018-07-25 08:42:54,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:54,812 INFO L93 Difference]: Finished difference Result 379 states and 381 transitions. [2018-07-25 08:42:54,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:42:54,812 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 372 [2018-07-25 08:42:54,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:54,812 INFO L225 Difference]: With dead ends: 379 [2018-07-25 08:42:54,813 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:42:54,814 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:42:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:42:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-07-25 08:42:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 08:42:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2018-07-25 08:42:54,817 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 372 [2018-07-25 08:42:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:54,818 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2018-07-25 08:42:54,818 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:42:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2018-07-25 08:42:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 08:42:54,819 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:54,819 INFO L354 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1, 1, 1] [2018-07-25 08:42:54,819 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:54,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1607691813, now seen corresponding path program 184 times [2018-07-25 08:42:54,819 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:56,246 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:56,246 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:42:56,247 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:42:56,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:42:56,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:42:56,251 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand 187 states. [2018-07-25 08:42:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:56,922 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2018-07-25 08:42:56,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:42:56,922 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 374 [2018-07-25 08:42:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:56,923 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:42:56,923 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 08:42:56,926 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:42:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 08:42:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 08:42:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 08:42:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2018-07-25 08:42:56,929 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 374 [2018-07-25 08:42:56,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:56,930 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2018-07-25 08:42:56,930 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:42:56,930 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2018-07-25 08:42:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 08:42:56,931 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:56,931 INFO L354 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1, 1, 1] [2018-07-25 08:42:56,931 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:56,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1112836055, now seen corresponding path program 185 times [2018-07-25 08:42:56,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:42:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:42:58,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:42:58,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:42:58,466 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:42:58,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:42:58,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:42:58,468 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand 188 states. [2018-07-25 08:42:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:42:59,315 INFO L93 Difference]: Finished difference Result 383 states and 385 transitions. [2018-07-25 08:42:59,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:42:59,315 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 376 [2018-07-25 08:42:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:42:59,316 INFO L225 Difference]: With dead ends: 383 [2018-07-25 08:42:59,316 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 08:42:59,317 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:42:59,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 08:42:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-07-25 08:42:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 08:42:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-07-25 08:42:59,321 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 376 [2018-07-25 08:42:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:42:59,321 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-07-25 08:42:59,321 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:42:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-07-25 08:42:59,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 08:42:59,323 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:42:59,323 INFO L354 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1, 1, 1] [2018-07-25 08:42:59,324 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:42:59,324 INFO L82 PathProgramCache]: Analyzing trace with hash -94966061, now seen corresponding path program 186 times [2018-07-25 08:42:59,324 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:42:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:00,816 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:00,816 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:43:00,817 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:43:00,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:43:00,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:43:00,821 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 189 states. [2018-07-25 08:43:02,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:02,577 INFO L93 Difference]: Finished difference Result 385 states and 387 transitions. [2018-07-25 08:43:02,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:43:02,578 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 378 [2018-07-25 08:43:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:02,578 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:43:02,578 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 08:43:02,580 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:43:02,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 08:43:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 08:43:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 08:43:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2018-07-25 08:43:02,584 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 378 [2018-07-25 08:43:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:02,584 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2018-07-25 08:43:02,584 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:43:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2018-07-25 08:43:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 08:43:02,586 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:02,586 INFO L354 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1, 1, 1] [2018-07-25 08:43:02,586 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:02,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1151629617, now seen corresponding path program 187 times [2018-07-25 08:43:02,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:04,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:04,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:43:04,174 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:43:04,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:43:04,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:43:04,177 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand 190 states. [2018-07-25 08:43:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:05,139 INFO L93 Difference]: Finished difference Result 387 states and 389 transitions. [2018-07-25 08:43:05,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:43:05,139 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 380 [2018-07-25 08:43:05,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:05,140 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:43:05,140 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 08:43:05,141 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:43:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 08:43:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-07-25 08:43:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 08:43:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2018-07-25 08:43:05,146 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 380 [2018-07-25 08:43:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:05,146 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2018-07-25 08:43:05,146 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:43:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2018-07-25 08:43:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 08:43:05,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:05,148 INFO L354 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1, 1, 1] [2018-07-25 08:43:05,148 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:05,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1301942219, now seen corresponding path program 188 times [2018-07-25 08:43:05,148 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:06,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:06,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:43:06,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:43:06,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:43:06,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:43:06,735 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand 191 states. [2018-07-25 08:43:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:07,231 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2018-07-25 08:43:07,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:43:07,231 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 382 [2018-07-25 08:43:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:07,232 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:43:07,232 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 08:43:07,234 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:43:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 08:43:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 08:43:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 08:43:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2018-07-25 08:43:07,238 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 382 [2018-07-25 08:43:07,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:07,238 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2018-07-25 08:43:07,238 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:43:07,238 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2018-07-25 08:43:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 08:43:07,239 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:07,240 INFO L354 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1, 1, 1] [2018-07-25 08:43:07,240 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:07,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1247431111, now seen corresponding path program 189 times [2018-07-25 08:43:07,240 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:08,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:08,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:43:08,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:43:08,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:43:08,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:43:08,925 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand 192 states. [2018-07-25 08:43:09,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:09,986 INFO L93 Difference]: Finished difference Result 391 states and 393 transitions. [2018-07-25 08:43:09,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:43:09,987 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 384 [2018-07-25 08:43:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:09,987 INFO L225 Difference]: With dead ends: 391 [2018-07-25 08:43:09,987 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 08:43:09,989 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:43:09,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 08:43:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-07-25 08:43:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:43:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-07-25 08:43:09,994 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 384 [2018-07-25 08:43:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:09,995 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-07-25 08:43:09,995 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:43:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-07-25 08:43:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 08:43:09,997 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:09,997 INFO L354 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1, 1, 1] [2018-07-25 08:43:09,998 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:09,998 INFO L82 PathProgramCache]: Analyzing trace with hash 401863875, now seen corresponding path program 190 times [2018-07-25 08:43:09,998 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:11,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:11,708 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:43:11,708 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:43:11,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:43:11,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:43:11,714 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 193 states. [2018-07-25 08:43:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:13,590 INFO L93 Difference]: Finished difference Result 393 states and 395 transitions. [2018-07-25 08:43:13,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:43:13,590 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 386 [2018-07-25 08:43:13,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:13,591 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:43:13,591 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 08:43:13,596 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:43:13,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 08:43:13,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 08:43:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 08:43:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2018-07-25 08:43:13,600 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 386 [2018-07-25 08:43:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:13,601 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2018-07-25 08:43:13,601 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:43:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2018-07-25 08:43:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 08:43:13,602 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:13,602 INFO L354 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1, 1, 1] [2018-07-25 08:43:13,602 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:13,602 INFO L82 PathProgramCache]: Analyzing trace with hash -439430977, now seen corresponding path program 191 times [2018-07-25 08:43:13,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:15,303 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:15,303 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:43:15,303 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:43:15,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:43:15,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:43:15,310 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand 194 states. [2018-07-25 08:43:17,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:17,688 INFO L93 Difference]: Finished difference Result 395 states and 397 transitions. [2018-07-25 08:43:17,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:43:17,688 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 388 [2018-07-25 08:43:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:17,689 INFO L225 Difference]: With dead ends: 395 [2018-07-25 08:43:17,690 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 08:43:17,693 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:43:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 08:43:17,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-07-25 08:43:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:43:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2018-07-25 08:43:17,698 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 388 [2018-07-25 08:43:17,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:17,698 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2018-07-25 08:43:17,699 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:43:17,699 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2018-07-25 08:43:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 08:43:17,700 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:17,701 INFO L354 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1, 1, 1] [2018-07-25 08:43:17,701 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:17,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1469932101, now seen corresponding path program 192 times [2018-07-25 08:43:17,701 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:19,494 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:19,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:43:19,494 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:43:19,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:43:19,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:43:19,503 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand 195 states. [2018-07-25 08:43:21,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:21,457 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2018-07-25 08:43:21,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:43:21,457 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 390 [2018-07-25 08:43:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:21,458 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:43:21,458 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 08:43:21,461 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:43:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 08:43:21,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 08:43:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 08:43:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2018-07-25 08:43:21,465 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 390 [2018-07-25 08:43:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:21,465 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2018-07-25 08:43:21,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:43:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2018-07-25 08:43:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 08:43:21,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:21,467 INFO L354 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1, 1, 1] [2018-07-25 08:43:21,467 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:21,467 INFO L82 PathProgramCache]: Analyzing trace with hash 355933111, now seen corresponding path program 193 times [2018-07-25 08:43:21,467 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:23,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:23,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:43:23,044 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:43:23,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:43:23,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:43:23,050 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand 196 states. [2018-07-25 08:43:24,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:24,994 INFO L93 Difference]: Finished difference Result 399 states and 401 transitions. [2018-07-25 08:43:24,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:43:24,994 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 392 [2018-07-25 08:43:24,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:24,995 INFO L225 Difference]: With dead ends: 399 [2018-07-25 08:43:24,995 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 08:43:24,999 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:43:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 08:43:25,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-07-25 08:43:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 08:43:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-07-25 08:43:25,003 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 392 [2018-07-25 08:43:25,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:25,003 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-07-25 08:43:25,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:43:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-07-25 08:43:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 08:43:25,005 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:25,005 INFO L354 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1, 1, 1] [2018-07-25 08:43:25,005 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:25,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1629222221, now seen corresponding path program 194 times [2018-07-25 08:43:25,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:26,971 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:26,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:43:26,972 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:43:26,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:43:26,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:43:26,978 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 197 states. [2018-07-25 08:43:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:28,198 INFO L93 Difference]: Finished difference Result 401 states and 403 transitions. [2018-07-25 08:43:28,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:43:28,198 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 394 [2018-07-25 08:43:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:28,199 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:43:28,199 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 08:43:28,200 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:43:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 08:43:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 08:43:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 08:43:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2018-07-25 08:43:28,204 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 394 [2018-07-25 08:43:28,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:28,205 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2018-07-25 08:43:28,205 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:43:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2018-07-25 08:43:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 08:43:28,207 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:28,207 INFO L354 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1, 1, 1] [2018-07-25 08:43:28,207 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:28,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1896950447, now seen corresponding path program 195 times [2018-07-25 08:43:28,208 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:29,941 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:29,942 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:43:29,942 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:43:29,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:43:29,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:43:29,948 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand 198 states. [2018-07-25 08:43:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:31,359 INFO L93 Difference]: Finished difference Result 403 states and 405 transitions. [2018-07-25 08:43:31,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:43:31,359 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 396 [2018-07-25 08:43:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:31,360 INFO L225 Difference]: With dead ends: 403 [2018-07-25 08:43:31,360 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 08:43:31,362 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:43:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 08:43:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-07-25 08:43:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 08:43:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2018-07-25 08:43:31,366 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 396 [2018-07-25 08:43:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:31,366 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2018-07-25 08:43:31,366 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:43:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2018-07-25 08:43:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 08:43:31,368 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:31,368 INFO L354 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1, 1, 1] [2018-07-25 08:43:31,368 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:31,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1819687851, now seen corresponding path program 196 times [2018-07-25 08:43:31,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:33,139 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:33,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:43:33,139 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:43:33,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:43:33,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:43:33,142 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand 199 states. [2018-07-25 08:43:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:34,675 INFO L93 Difference]: Finished difference Result 405 states and 407 transitions. [2018-07-25 08:43:34,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:43:34,675 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 398 [2018-07-25 08:43:34,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:34,676 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:43:34,676 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 08:43:34,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:43:34,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 08:43:34,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 08:43:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 08:43:34,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2018-07-25 08:43:34,681 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 398 [2018-07-25 08:43:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:34,681 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2018-07-25 08:43:34,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:43:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2018-07-25 08:43:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 08:43:34,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:34,682 INFO L354 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1, 1, 1] [2018-07-25 08:43:34,683 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:34,683 INFO L82 PathProgramCache]: Analyzing trace with hash 584777127, now seen corresponding path program 197 times [2018-07-25 08:43:34,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:36,528 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:36,528 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:43:36,529 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:43:36,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:43:36,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:43:36,535 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand 200 states. [2018-07-25 08:43:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:39,083 INFO L93 Difference]: Finished difference Result 407 states and 409 transitions. [2018-07-25 08:43:39,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:43:39,083 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 400 [2018-07-25 08:43:39,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:39,084 INFO L225 Difference]: With dead ends: 407 [2018-07-25 08:43:39,084 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 08:43:39,087 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:43:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 08:43:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-07-25 08:43:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 08:43:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-07-25 08:43:39,092 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 400 [2018-07-25 08:43:39,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:39,092 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-07-25 08:43:39,092 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:43:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-07-25 08:43:39,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 08:43:39,093 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:39,094 INFO L354 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1, 1, 1] [2018-07-25 08:43:39,094 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:39,094 INFO L82 PathProgramCache]: Analyzing trace with hash -753454941, now seen corresponding path program 198 times [2018-07-25 08:43:39,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:41,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:41,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:43:41,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:43:41,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:43:41,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:43:41,107 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 201 states. [2018-07-25 08:43:43,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:43,223 INFO L93 Difference]: Finished difference Result 409 states and 411 transitions. [2018-07-25 08:43:43,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:43:43,223 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 402 [2018-07-25 08:43:43,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:43,224 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:43:43,224 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 08:43:43,227 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:43:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 08:43:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 08:43:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 08:43:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 406 transitions. [2018-07-25 08:43:43,231 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 406 transitions. Word has length 402 [2018-07-25 08:43:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:43,231 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 406 transitions. [2018-07-25 08:43:43,231 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:43:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 406 transitions. [2018-07-25 08:43:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 08:43:43,232 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:43,232 INFO L354 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1, 1, 1] [2018-07-25 08:43:43,232 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:43,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1695716511, now seen corresponding path program 199 times [2018-07-25 08:43:43,233 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:45,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:45,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:43:45,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:43:45,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:43:45,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:43:45,047 INFO L87 Difference]: Start difference. First operand 405 states and 406 transitions. Second operand 202 states. [2018-07-25 08:43:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:47,001 INFO L93 Difference]: Finished difference Result 411 states and 413 transitions. [2018-07-25 08:43:47,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:43:47,001 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 404 [2018-07-25 08:43:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:47,002 INFO L225 Difference]: With dead ends: 411 [2018-07-25 08:43:47,002 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 08:43:47,003 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:43:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 08:43:47,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-07-25 08:43:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 08:43:47,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2018-07-25 08:43:47,007 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 404 [2018-07-25 08:43:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:47,007 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2018-07-25 08:43:47,007 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:43:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2018-07-25 08:43:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 08:43:47,008 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:47,008 INFO L354 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1, 1, 1] [2018-07-25 08:43:47,009 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:47,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1707403675, now seen corresponding path program 200 times [2018-07-25 08:43:47,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:48,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:48,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:43:48,863 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:43:48,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:43:48,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:43:48,868 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand 203 states. [2018-07-25 08:43:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:50,099 INFO L93 Difference]: Finished difference Result 413 states and 415 transitions. [2018-07-25 08:43:50,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:43:50,099 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 406 [2018-07-25 08:43:50,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:50,100 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:43:50,101 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 08:43:50,105 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:43:50,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 08:43:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 08:43:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 08:43:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2018-07-25 08:43:50,111 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 406 [2018-07-25 08:43:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:50,111 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2018-07-25 08:43:50,111 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:43:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2018-07-25 08:43:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 08:43:50,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:50,113 INFO L354 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1, 1, 1] [2018-07-25 08:43:50,113 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash 53866391, now seen corresponding path program 201 times [2018-07-25 08:43:50,114 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:51,967 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:51,967 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:43:51,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:43:51,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:43:51,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:43:51,972 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand 204 states. [2018-07-25 08:43:52,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:52,568 INFO L93 Difference]: Finished difference Result 415 states and 417 transitions. [2018-07-25 08:43:52,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:43:52,568 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 408 [2018-07-25 08:43:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:52,569 INFO L225 Difference]: With dead ends: 415 [2018-07-25 08:43:52,569 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 08:43:52,571 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:43:52,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 08:43:52,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-07-25 08:43:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:43:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-07-25 08:43:52,574 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 408 [2018-07-25 08:43:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:52,575 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-07-25 08:43:52,575 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:43:52,575 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-07-25 08:43:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 08:43:52,576 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:52,576 INFO L354 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1, 1, 1] [2018-07-25 08:43:52,576 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:52,577 INFO L82 PathProgramCache]: Analyzing trace with hash 142435987, now seen corresponding path program 202 times [2018-07-25 08:43:52,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:54,430 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:54,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:43:54,431 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:43:54,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:43:54,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:43:54,436 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 205 states. [2018-07-25 08:43:56,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:43:56,178 INFO L93 Difference]: Finished difference Result 417 states and 419 transitions. [2018-07-25 08:43:56,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:43:56,178 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 410 [2018-07-25 08:43:56,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:43:56,179 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:43:56,179 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 08:43:56,181 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:43:56,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 08:43:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 08:43:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 08:43:56,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2018-07-25 08:43:56,185 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 410 [2018-07-25 08:43:56,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:43:56,186 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2018-07-25 08:43:56,186 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:43:56,186 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2018-07-25 08:43:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 08:43:56,187 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:43:56,187 INFO L354 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1, 1, 1] [2018-07-25 08:43:56,187 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:43:56,187 INFO L82 PathProgramCache]: Analyzing trace with hash -641528177, now seen corresponding path program 203 times [2018-07-25 08:43:56,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:43:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:43:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:43:58,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:43:58,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:43:58,075 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:43:58,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:43:58,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:43:58,080 INFO L87 Difference]: Start difference. First operand 413 states and 414 transitions. Second operand 206 states. [2018-07-25 08:44:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:00,379 INFO L93 Difference]: Finished difference Result 419 states and 421 transitions. [2018-07-25 08:44:00,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:44:00,379 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 412 [2018-07-25 08:44:00,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:00,380 INFO L225 Difference]: With dead ends: 419 [2018-07-25 08:44:00,380 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 08:44:00,383 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:44:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 08:44:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-07-25 08:44:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 08:44:00,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2018-07-25 08:44:00,389 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 412 [2018-07-25 08:44:00,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:00,389 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2018-07-25 08:44:00,389 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:44:00,390 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2018-07-25 08:44:00,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 08:44:00,391 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:00,392 INFO L354 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1, 1, 1] [2018-07-25 08:44:00,392 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:00,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1883154315, now seen corresponding path program 204 times [2018-07-25 08:44:00,392 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:02,346 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:02,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:44:02,346 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:44:02,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:44:02,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:44:02,349 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand 207 states. [2018-07-25 08:44:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:03,050 INFO L93 Difference]: Finished difference Result 421 states and 423 transitions. [2018-07-25 08:44:03,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:44:03,051 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 414 [2018-07-25 08:44:03,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:03,051 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:44:03,051 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 08:44:03,053 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:44:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 08:44:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 08:44:03,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 08:44:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2018-07-25 08:44:03,057 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 414 [2018-07-25 08:44:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:03,058 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2018-07-25 08:44:03,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:44:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2018-07-25 08:44:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 08:44:03,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:03,059 INFO L354 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1, 1, 1] [2018-07-25 08:44:03,059 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:03,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1446506887, now seen corresponding path program 205 times [2018-07-25 08:44:03,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:04,978 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:04,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:44:04,979 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:44:04,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:44:04,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:44:04,984 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand 208 states. [2018-07-25 08:44:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:06,675 INFO L93 Difference]: Finished difference Result 423 states and 425 transitions. [2018-07-25 08:44:06,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:44:06,676 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 416 [2018-07-25 08:44:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:06,677 INFO L225 Difference]: With dead ends: 423 [2018-07-25 08:44:06,677 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 08:44:06,681 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:44:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 08:44:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-07-25 08:44:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 08:44:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-07-25 08:44:06,687 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 416 [2018-07-25 08:44:06,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:06,687 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-07-25 08:44:06,687 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:44:06,687 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-07-25 08:44:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 08:44:06,689 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:06,689 INFO L354 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1, 1, 1] [2018-07-25 08:44:06,689 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:06,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1559843709, now seen corresponding path program 206 times [2018-07-25 08:44:06,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:08,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:08,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:44:08,934 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:44:08,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:44:08,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:44:08,940 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 209 states. [2018-07-25 08:44:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:11,737 INFO L93 Difference]: Finished difference Result 425 states and 427 transitions. [2018-07-25 08:44:11,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:44:11,738 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 418 [2018-07-25 08:44:11,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:11,738 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:44:11,739 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 08:44:11,742 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:44:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 08:44:11,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 08:44:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 08:44:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2018-07-25 08:44:11,747 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 418 [2018-07-25 08:44:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:11,747 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2018-07-25 08:44:11,747 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:44:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2018-07-25 08:44:11,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 08:44:11,748 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:11,748 INFO L354 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1, 1, 1] [2018-07-25 08:44:11,749 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:11,749 INFO L82 PathProgramCache]: Analyzing trace with hash -149776257, now seen corresponding path program 207 times [2018-07-25 08:44:11,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:13,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:13,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:44:13,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:44:13,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:44:13,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:44:13,964 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand 210 states. [2018-07-25 08:44:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:14,671 INFO L93 Difference]: Finished difference Result 427 states and 429 transitions. [2018-07-25 08:44:14,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:44:14,672 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 420 [2018-07-25 08:44:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:14,672 INFO L225 Difference]: With dead ends: 427 [2018-07-25 08:44:14,672 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 08:44:14,674 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:44:14,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 08:44:14,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-07-25 08:44:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 08:44:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2018-07-25 08:44:14,678 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 420 [2018-07-25 08:44:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:14,678 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2018-07-25 08:44:14,678 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:44:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2018-07-25 08:44:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 08:44:14,679 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:14,680 INFO L354 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1, 1, 1] [2018-07-25 08:44:14,680 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash 2010346875, now seen corresponding path program 208 times [2018-07-25 08:44:14,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:16,710 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:16,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:44:16,710 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:44:16,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:44:16,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:44:16,716 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand 211 states. [2018-07-25 08:44:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:19,217 INFO L93 Difference]: Finished difference Result 429 states and 431 transitions. [2018-07-25 08:44:19,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:44:19,217 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 422 [2018-07-25 08:44:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:19,218 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:44:19,218 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 08:44:19,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:44:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 08:44:19,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 08:44:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 08:44:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2018-07-25 08:44:19,224 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 422 [2018-07-25 08:44:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:19,225 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2018-07-25 08:44:19,225 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:44:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2018-07-25 08:44:19,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 08:44:19,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:19,226 INFO L354 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1, 1, 1] [2018-07-25 08:44:19,226 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:19,226 INFO L82 PathProgramCache]: Analyzing trace with hash -875494537, now seen corresponding path program 209 times [2018-07-25 08:44:19,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:21,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:21,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:44:21,241 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:44:21,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:44:21,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:44:21,246 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand 212 states. [2018-07-25 08:44:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:22,384 INFO L93 Difference]: Finished difference Result 431 states and 433 transitions. [2018-07-25 08:44:22,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:44:22,384 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 424 [2018-07-25 08:44:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:22,385 INFO L225 Difference]: With dead ends: 431 [2018-07-25 08:44:22,385 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 08:44:22,388 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:44:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 08:44:22,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-07-25 08:44:22,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 08:44:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-07-25 08:44:22,392 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 424 [2018-07-25 08:44:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:22,392 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-07-25 08:44:22,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:44:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-07-25 08:44:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 08:44:22,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:22,394 INFO L354 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1, 1, 1] [2018-07-25 08:44:22,394 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:22,394 INFO L82 PathProgramCache]: Analyzing trace with hash 379781747, now seen corresponding path program 210 times [2018-07-25 08:44:22,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:24,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:24,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:44:24,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:44:24,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:44:24,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:44:24,561 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand 213 states. [2018-07-25 08:44:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:26,879 INFO L93 Difference]: Finished difference Result 433 states and 435 transitions. [2018-07-25 08:44:26,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:44:26,880 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 426 [2018-07-25 08:44:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:26,880 INFO L225 Difference]: With dead ends: 433 [2018-07-25 08:44:26,880 INFO L226 Difference]: Without dead ends: 429 [2018-07-25 08:44:26,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:44:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-25 08:44:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-25 08:44:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 08:44:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 430 transitions. [2018-07-25 08:44:26,885 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 430 transitions. Word has length 426 [2018-07-25 08:44:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:26,886 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 430 transitions. [2018-07-25 08:44:26,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:44:26,886 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 430 transitions. [2018-07-25 08:44:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 08:44:26,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:26,887 INFO L354 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1, 1, 1] [2018-07-25 08:44:26,887 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:26,888 INFO L82 PathProgramCache]: Analyzing trace with hash -185519505, now seen corresponding path program 211 times [2018-07-25 08:44:26,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:28,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:28,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:44:28,988 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:44:28,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:44:28,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:44:28,995 INFO L87 Difference]: Start difference. First operand 429 states and 430 transitions. Second operand 214 states. [2018-07-25 08:44:30,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:30,070 INFO L93 Difference]: Finished difference Result 435 states and 437 transitions. [2018-07-25 08:44:30,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:44:30,070 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 428 [2018-07-25 08:44:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:30,071 INFO L225 Difference]: With dead ends: 435 [2018-07-25 08:44:30,071 INFO L226 Difference]: Without dead ends: 431 [2018-07-25 08:44:30,073 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:44:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-25 08:44:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-07-25 08:44:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-25 08:44:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2018-07-25 08:44:30,078 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 428 [2018-07-25 08:44:30,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:30,078 INFO L472 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2018-07-25 08:44:30,078 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:44:30,078 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2018-07-25 08:44:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-25 08:44:30,079 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:30,079 INFO L354 BasicCegarLoop]: trace histogram [213, 212, 1, 1, 1, 1, 1] [2018-07-25 08:44:30,080 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:30,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2020823915, now seen corresponding path program 212 times [2018-07-25 08:44:30,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:32,199 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:32,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:44:32,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:44:32,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:44:32,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:44:32,205 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand 215 states. [2018-07-25 08:44:33,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:33,734 INFO L93 Difference]: Finished difference Result 437 states and 439 transitions. [2018-07-25 08:44:33,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:44:33,734 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 430 [2018-07-25 08:44:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:33,735 INFO L225 Difference]: With dead ends: 437 [2018-07-25 08:44:33,735 INFO L226 Difference]: Without dead ends: 433 [2018-07-25 08:44:33,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:44:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-25 08:44:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-25 08:44:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-25 08:44:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2018-07-25 08:44:33,741 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 430 [2018-07-25 08:44:33,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:33,742 INFO L472 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2018-07-25 08:44:33,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:44:33,742 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2018-07-25 08:44:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-25 08:44:33,743 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:33,743 INFO L354 BasicCegarLoop]: trace histogram [214, 213, 1, 1, 1, 1, 1] [2018-07-25 08:44:33,744 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:33,744 INFO L82 PathProgramCache]: Analyzing trace with hash 603006311, now seen corresponding path program 213 times [2018-07-25 08:44:33,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:36,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:36,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:44:36,020 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:44:36,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:44:36,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:44:36,023 INFO L87 Difference]: Start difference. First operand 433 states and 434 transitions. Second operand 216 states. [2018-07-25 08:44:38,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:38,275 INFO L93 Difference]: Finished difference Result 439 states and 441 transitions. [2018-07-25 08:44:38,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:44:38,275 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 432 [2018-07-25 08:44:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:38,276 INFO L225 Difference]: With dead ends: 439 [2018-07-25 08:44:38,276 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 08:44:38,277 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:44:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 08:44:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-07-25 08:44:38,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-25 08:44:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 436 transitions. [2018-07-25 08:44:38,281 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 436 transitions. Word has length 432 [2018-07-25 08:44:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:38,282 INFO L472 AbstractCegarLoop]: Abstraction has 435 states and 436 transitions. [2018-07-25 08:44:38,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:44:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 436 transitions. [2018-07-25 08:44:38,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-25 08:44:38,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:38,283 INFO L354 BasicCegarLoop]: trace histogram [215, 214, 1, 1, 1, 1, 1] [2018-07-25 08:44:38,283 INFO L415 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:38,284 INFO L82 PathProgramCache]: Analyzing trace with hash -415078301, now seen corresponding path program 214 times [2018-07-25 08:44:38,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 0 proven. 46010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:40,383 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:40,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:44:40,383 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:44:40,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:44:40,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:44:40,392 INFO L87 Difference]: Start difference. First operand 435 states and 436 transitions. Second operand 217 states. [2018-07-25 08:44:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:41,899 INFO L93 Difference]: Finished difference Result 441 states and 443 transitions. [2018-07-25 08:44:41,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:44:41,899 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 434 [2018-07-25 08:44:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:41,900 INFO L225 Difference]: With dead ends: 441 [2018-07-25 08:44:41,900 INFO L226 Difference]: Without dead ends: 437 [2018-07-25 08:44:41,902 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:44:41,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-07-25 08:44:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-07-25 08:44:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 08:44:41,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 438 transitions. [2018-07-25 08:44:41,906 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 438 transitions. Word has length 434 [2018-07-25 08:44:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:41,907 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 438 transitions. [2018-07-25 08:44:41,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:44:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 438 transitions. [2018-07-25 08:44:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-25 08:44:41,908 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:41,908 INFO L354 BasicCegarLoop]: trace histogram [216, 215, 1, 1, 1, 1, 1] [2018-07-25 08:44:41,908 INFO L415 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:41,909 INFO L82 PathProgramCache]: Analyzing trace with hash 458153055, now seen corresponding path program 215 times [2018-07-25 08:44:41,909 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 46440 backedges. 0 proven. 46440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:44:43,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:44:43,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:44:43,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:44:43,970 INFO L87 Difference]: Start difference. First operand 437 states and 438 transitions. Second operand 218 states. [2018-07-25 08:44:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:46,947 INFO L93 Difference]: Finished difference Result 443 states and 445 transitions. [2018-07-25 08:44:46,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:44:46,947 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 436 [2018-07-25 08:44:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:46,948 INFO L225 Difference]: With dead ends: 443 [2018-07-25 08:44:46,948 INFO L226 Difference]: Without dead ends: 439 [2018-07-25 08:44:46,953 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:44:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-25 08:44:46,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-07-25 08:44:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-07-25 08:44:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 440 transitions. [2018-07-25 08:44:46,958 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 440 transitions. Word has length 436 [2018-07-25 08:44:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:46,958 INFO L472 AbstractCegarLoop]: Abstraction has 439 states and 440 transitions. [2018-07-25 08:44:46,959 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:44:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 440 transitions. [2018-07-25 08:44:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-25 08:44:46,960 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:46,960 INFO L354 BasicCegarLoop]: trace histogram [217, 216, 1, 1, 1, 1, 1] [2018-07-25 08:44:46,961 INFO L415 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:46,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2114863451, now seen corresponding path program 216 times [2018-07-25 08:44:46,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:49,346 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:49,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 08:44:49,347 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 08:44:49,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 08:44:49,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:44:49,351 INFO L87 Difference]: Start difference. First operand 439 states and 440 transitions. Second operand 219 states. [2018-07-25 08:44:52,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:52,140 INFO L93 Difference]: Finished difference Result 445 states and 447 transitions. [2018-07-25 08:44:52,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:44:52,141 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 438 [2018-07-25 08:44:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:52,141 INFO L225 Difference]: With dead ends: 445 [2018-07-25 08:44:52,141 INFO L226 Difference]: Without dead ends: 441 [2018-07-25 08:44:52,143 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:44:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-07-25 08:44:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-07-25 08:44:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-07-25 08:44:52,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2018-07-25 08:44:52,148 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 438 [2018-07-25 08:44:52,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:52,148 INFO L472 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2018-07-25 08:44:52,148 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 08:44:52,148 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2018-07-25 08:44:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-07-25 08:44:52,149 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:52,149 INFO L354 BasicCegarLoop]: trace histogram [218, 217, 1, 1, 1, 1, 1] [2018-07-25 08:44:52,150 INFO L415 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:52,150 INFO L82 PathProgramCache]: Analyzing trace with hash 780687191, now seen corresponding path program 217 times [2018-07-25 08:44:52,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 08:44:53,778 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:44:53,784 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:44:53,784 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:44:53 BoogieIcfgContainer [2018-07-25 08:44:53,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:44:53,785 INFO L168 Benchmark]: Toolchain (without parser) took 264946.68 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 1.3 GB in the end (delta: 141.3 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-07-25 08:44:53,787 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 08:44:53,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.84 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 08:44:53,788 INFO L168 Benchmark]: Boogie Preprocessor took 21.98 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 08:44:53,788 INFO L168 Benchmark]: RCFGBuilder took 323.55 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 08:44:53,789 INFO L168 Benchmark]: TraceAbstraction took 264549.73 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 1.3 GB in the end (delta: 130.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-07-25 08:44:53,791 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 45.84 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 21.98 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 323.55 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 264549.73 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 1.3 GB in the end (delta: 130.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 83). Cancelled while BasicCegarLoop was analyzing trace of length 441 with TraceHistMax 218, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 138 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 264.4s OverallTime, 218 OverallIterations, 218 TraceHistogramMax, 105.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1519 SDtfs, 0 SDslu, 57001 SDs, 0 SdLazy, 46102 SolverSat, 440 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23870 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 23653 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=441occurred in iteration=217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 217 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 47.6s SatisfiabilityAnalysisTime, 96.0s InterpolantComputationTime, 48174 NumberOfCodeBlocks, 48174 NumberOfCodeBlocksAsserted, 217 NumberOfCheckSat, 47957 ConstructedInterpolants, 0 QuantifiedInterpolants, 41725845 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 217 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3406032 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/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-44-53-800.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-44-53-800.csv Completed graceful shutdown