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/toy/tooDifficultLoopInvariant/Octopussy.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:54:43,981 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:54:43,983 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:54:43,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:54:44,000 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:54:44,001 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:54:44,003 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:54:44,007 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:54:44,016 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:54:44,019 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:54:44,020 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:54:44,022 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:54:44,024 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:54:44,025 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:54:44,027 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:54:44,029 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:54:44,030 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:54:44,036 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:54:44,041 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:54:44,045 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:54:44,046 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:54:44,049 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:54:44,054 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:54:44,054 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:54:44,055 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:54:44,057 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:54:44,058 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:54:44,059 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:54:44,060 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:54:44,064 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:54:44,065 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:54:44,067 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 08:54:44,067 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 08:54:44,067 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 08:54:44,069 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 08:54:44,070 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 08:54:44,070 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:54:44,085 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:54:44,086 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:54:44,087 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:54:44,087 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:54:44,087 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:54:44,088 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:54:44,088 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:54:44,088 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:54:44,132 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:54:44,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:54:44,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:54:44,152 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:54:44,152 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:54:44,153 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Octopussy.bpl [2018-07-25 08:54:44,154 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Octopussy.bpl' [2018-07-25 08:54:44,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:54:44,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:54:44,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:54:44,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:54:44,205 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:54:44,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/1) ... [2018-07-25 08:54:44,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/1) ... [2018-07-25 08:54:44,245 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:54:44,245 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:54:44,246 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:54:44,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:54:44,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:54:44,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:54:44,249 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:54:44,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/1) ... [2018-07-25 08:54:44,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/1) ... [2018-07-25 08:54:44,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/1) ... [2018-07-25 08:54:44,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/1) ... [2018-07-25 08:54:44,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/1) ... [2018-07-25 08:54:44,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/1) ... [2018-07-25 08:54:44,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/1) ... [2018-07-25 08:54:44,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:54:44,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:54:44,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:54:44,273 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:54:44,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/1) ... [2018-07-25 08:54:44,361 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-07-25 08:54:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-25 08:54:44,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-25 08:54:44,465 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:54:44,465 INFO L202 PluginConnector]: Adding new model Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:54:44 BoogieIcfgContainer [2018-07-25 08:54:44,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:54:44,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:54:44,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:54:44,471 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:54:44,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:54:44" (1/2) ... [2018-07-25 08:54:44,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244a6d62 and model type Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:54:44, skipping insertion in model container [2018-07-25 08:54:44,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:54:44" (2/2) ... [2018-07-25 08:54:44,475 INFO L112 eAbstractionObserver]: Analyzing ICFG Octopussy.bpl [2018-07-25 08:54:44,485 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:54:44,493 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:54:44,541 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:54:44,542 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:54:44,542 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:54:44,542 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:54:44,543 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:54:44,543 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:54:44,543 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:54:44,543 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:54:44,543 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:54:44,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:54:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-07-25 08:54:44,567 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,568 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-07-25 08:54:44,569 INFO L415 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,575 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-07-25 08:54:44,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,650 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 08:54:44,653 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:54:44,653 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:54:44,658 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:54:44,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:54:44,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:54:44,673 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:54:44,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,698 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-07-25 08:54:44,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:54:44,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-07-25 08:54:44,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,710 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:54:44,710 INFO L226 Difference]: Without dead ends: 5 [2018-07-25 08:54:44,714 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 08:54:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-07-25 08:54:44,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-07-25 08:54:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-07-25 08:54:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-07-25 08:54:44,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-07-25 08:54:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,752 INFO L472 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-07-25 08:54:44,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:54:44,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-07-25 08:54:44,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:54:44,754 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,754 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:54:44,755 INFO L415 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,755 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-07-25 08:54:44,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:44,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:44,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:54:44,777 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:54:44,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:54:44,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:54:44,778 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-07-25 08:54:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,791 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-07-25 08:54:44,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:54:44,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:54:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,793 INFO L225 Difference]: With dead ends: 8 [2018-07-25 08:54:44,793 INFO L226 Difference]: Without dead ends: 6 [2018-07-25 08:54:44,794 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 08:54:44,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-07-25 08:54:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-07-25 08:54:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-07-25 08:54:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-07-25 08:54:44,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-07-25 08:54:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,797 INFO L472 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-07-25 08:54:44,797 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:54:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-07-25 08:54:44,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 08:54:44,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,798 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-07-25 08:54:44,799 INFO L415 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,799 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-07-25 08:54:44,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:44,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:44,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:54:44,827 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:54:44,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:54:44,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:54:44,829 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-07-25 08:54:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,841 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:54:44,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:54:44,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-07-25 08:54:44,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,842 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:54:44,842 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:54:44,843 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 08:54:44,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:54:44,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:54:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:54:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:54:44,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-07-25 08:54:44,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,846 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:54:44,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:54:44,847 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:54:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:54:44,847 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,847 INFO L354 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-07-25 08:54:44,848 INFO L415 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,848 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-07-25 08:54:44,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,883 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 08:54:44,883 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:44,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:54:44,884 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:54:44,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:54:44,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:54:44,885 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-25 08:54:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,903 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-07-25 08:54:44,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:54:44,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-25 08:54:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,904 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:54:44,905 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:54:44,905 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 08:54:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:54:44,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-07-25 08:54:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-07-25 08:54:44,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-07-25 08:54:44,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-07-25 08:54:44,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,909 INFO L472 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-07-25 08:54:44,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:54:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-07-25 08:54:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:54:44,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,910 INFO L354 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-07-25 08:54:44,910 INFO L415 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-07-25 08:54:44,911 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:44,954 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:44,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:54:44,954 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:54:44,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:54:44,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:54:44,955 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-07-25 08:54:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:44,972 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:54:44,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:54:44,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-25 08:54:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:44,974 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:54:44,974 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:54:44,974 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 08:54:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:54:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:54:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:54:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:54:44,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-07-25 08:54:44,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:44,978 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:54:44,978 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:54:44,979 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:54:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:54:44,979 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:44,979 INFO L354 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-07-25 08:54:44,980 INFO L415 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:44,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-07-25 08:54:44,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,051 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,051 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:54:45,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:54:45,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:54:45,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:54:45,053 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-07-25 08:54:45,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,081 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 08:54:45,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:54:45,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-07-25 08:54:45,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,083 INFO L225 Difference]: With dead ends: 12 [2018-07-25 08:54:45,083 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:54:45,088 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 08:54:45,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:54:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-07-25 08:54:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-07-25 08:54:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-07-25 08:54:45,092 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-07-25 08:54:45,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,093 INFO L472 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-07-25 08:54:45,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:54:45,093 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-07-25 08:54:45,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:54:45,097 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,098 INFO L354 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-07-25 08:54:45,098 INFO L415 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-07-25 08:54:45,099 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:54:45,178 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:54:45,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:54:45,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:54:45,181 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-07-25 08:54:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,204 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:54:45,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:54:45,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-07-25 08:54:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,205 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:54:45,206 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:54:45,206 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 08:54:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:54:45,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:54:45,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:54:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:54:45,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-07-25 08:54:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,210 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:54:45,210 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:54:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:54:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:54:45,211 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,211 INFO L354 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-07-25 08:54:45,212 INFO L415 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-07-25 08:54:45,212 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,260 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,260 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:54:45,260 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:54:45,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:54:45,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:54:45,261 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-07-25 08:54:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,275 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-25 08:54:45,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:54:45,276 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-07-25 08:54:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,277 INFO L225 Difference]: With dead ends: 14 [2018-07-25 08:54:45,277 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 08:54:45,278 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 08:54:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 08:54:45,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-07-25 08:54:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-07-25 08:54:45,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-07-25 08:54:45,281 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-07-25 08:54:45,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,282 INFO L472 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-07-25 08:54:45,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:54:45,282 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-07-25 08:54:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:54:45,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,283 INFO L354 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-07-25 08:54:45,283 INFO L415 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-07-25 08:54:45,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:54:45,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:54:45,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:54:45,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:54:45,344 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-07-25 08:54:45,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,367 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:54:45,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:54:45,368 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-07-25 08:54:45,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,368 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:54:45,369 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:54:45,371 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 08:54:45,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:54:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:54:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:54:45,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:54:45,375 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-07-25 08:54:45,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,376 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:54:45,376 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:54:45,376 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:54:45,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:54:45,377 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,377 INFO L354 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-07-25 08:54:45,377 INFO L415 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,378 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-07-25 08:54:45,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,429 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:54:45,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:54:45,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:54:45,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:54:45,434 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-07-25 08:54:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,466 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-25 08:54:45,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:54:45,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-07-25 08:54:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,470 INFO L225 Difference]: With dead ends: 16 [2018-07-25 08:54:45,470 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 08:54:45,471 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 08:54:45,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 08:54:45,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-07-25 08:54:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-07-25 08:54:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-07-25 08:54:45,477 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-07-25 08:54:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,478 INFO L472 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-07-25 08:54:45,478 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:54:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-07-25 08:54:45,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:54:45,480 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,480 INFO L354 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-07-25 08:54:45,481 INFO L415 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,481 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-07-25 08:54:45,481 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,577 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,577 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:54:45,577 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:54:45,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:54:45,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:54:45,581 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-07-25 08:54:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,608 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:54:45,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:54:45,608 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-07-25 08:54:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,609 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:54:45,611 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:54:45,612 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 08:54:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:54:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:54:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:54:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:54:45,616 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-07-25 08:54:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,616 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:54:45,617 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:54:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:54:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:54:45,617 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,618 INFO L354 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-07-25 08:54:45,618 INFO L415 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-07-25 08:54:45,618 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:54:45,674 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:54:45,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:54:45,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:54:45,675 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-07-25 08:54:45,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,703 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-07-25 08:54:45,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:54:45,703 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-07-25 08:54:45,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,704 INFO L225 Difference]: With dead ends: 18 [2018-07-25 08:54:45,704 INFO L226 Difference]: Without dead ends: 16 [2018-07-25 08:54:45,707 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 08:54:45,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-07-25 08:54:45,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-07-25 08:54:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-07-25 08:54:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-07-25 08:54:45,717 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-07-25 08:54:45,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,718 INFO L472 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-07-25 08:54:45,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:54:45,718 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-07-25 08:54:45,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-25 08:54:45,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,719 INFO L354 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-07-25 08:54:45,719 INFO L415 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,720 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-07-25 08:54:45,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:54:45,806 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:54:45,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:54:45,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:54:45,811 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-07-25 08:54:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,830 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:54:45,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:54:45,830 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-07-25 08:54:45,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,831 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:54:45,831 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:54:45,832 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 08:54:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:54:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:54:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:54:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:54:45,836 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-07-25 08:54:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,836 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:54:45,837 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:54:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:54:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:54:45,837 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,838 INFO L354 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-07-25 08:54:45,838 INFO L415 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,838 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-07-25 08:54:45,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,887 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:54:45,888 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:54:45,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:54:45,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:54:45,889 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-07-25 08:54:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:45,901 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-07-25 08:54:45,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:54:45,902 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-07-25 08:54:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:45,902 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:54:45,903 INFO L226 Difference]: Without dead ends: 18 [2018-07-25 08:54:45,903 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 08:54:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-07-25 08:54:45,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-07-25 08:54:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-25 08:54:45,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-07-25 08:54:45,910 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-07-25 08:54:45,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:45,911 INFO L472 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-07-25 08:54:45,911 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:54:45,911 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-07-25 08:54:45,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:54:45,912 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:45,912 INFO L354 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-07-25 08:54:45,913 INFO L415 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:45,913 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-07-25 08:54:45,913 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:45,989 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:45,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:54:45,989 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:54:45,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:54:45,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:54:45,990 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-07-25 08:54:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,002 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:54:46,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:54:46,002 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-07-25 08:54:46,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,003 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:54:46,003 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:54:46,004 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 08:54:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:54:46,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:54:46,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:54:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:54:46,010 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-07-25 08:54:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,012 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:54:46,012 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:54:46,013 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:54:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:54:46,014 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,014 INFO L354 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-07-25 08:54:46,014 INFO L415 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-07-25 08:54:46,015 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:54:46,076 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:54:46,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:54:46,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:54:46,080 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-07-25 08:54:46,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,097 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-07-25 08:54:46,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:54:46,097 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-07-25 08:54:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,098 INFO L225 Difference]: With dead ends: 22 [2018-07-25 08:54:46,098 INFO L226 Difference]: Without dead ends: 20 [2018-07-25 08:54:46,099 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 08:54:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-25 08:54:46,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-07-25 08:54:46,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-07-25 08:54:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-07-25 08:54:46,103 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-07-25 08:54:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,104 INFO L472 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-07-25 08:54:46,104 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:54:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-07-25 08:54:46,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-25 08:54:46,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,105 INFO L354 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-07-25 08:54:46,105 INFO L415 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-07-25 08:54:46,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,161 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,162 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:54:46,162 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:54:46,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:54:46,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:54:46,163 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-07-25 08:54:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,176 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:54:46,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:54:46,177 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-07-25 08:54:46,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,177 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:54:46,178 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:54:46,178 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 08:54:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:54:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:54:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:54:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:54:46,182 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-07-25 08:54:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,183 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:54:46,183 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:54:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:54:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:54:46,184 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,184 INFO L354 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-07-25 08:54:46,184 INFO L415 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-07-25 08:54:46,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:54:46,251 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:54:46,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:54:46,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:54:46,252 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-07-25 08:54:46,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,267 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-07-25 08:54:46,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:54:46,267 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-07-25 08:54:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,268 INFO L225 Difference]: With dead ends: 24 [2018-07-25 08:54:46,268 INFO L226 Difference]: Without dead ends: 22 [2018-07-25 08:54:46,269 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 08:54:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-07-25 08:54:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-07-25 08:54:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 08:54:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-07-25 08:54:46,273 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-07-25 08:54:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,274 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-07-25 08:54:46,274 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:54:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-07-25 08:54:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:54:46,275 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,275 INFO L354 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-07-25 08:54:46,275 INFO L415 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,275 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-07-25 08:54:46,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:54:46,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:54:46,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:54:46,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:54:46,344 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-07-25 08:54:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,360 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:54:46,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:54:46,360 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-07-25 08:54:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,361 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:54:46,361 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:54:46,362 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 08:54:46,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:54:46,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:54:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:54:46,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:54:46,366 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-07-25 08:54:46,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,366 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:54:46,367 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:54:46,367 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:54:46,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:54:46,368 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,368 INFO L354 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-07-25 08:54:46,368 INFO L415 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,368 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-07-25 08:54:46,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:54:46,444 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:54:46,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:54:46,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:54:46,445 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-07-25 08:54:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,458 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-07-25 08:54:46,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:54:46,458 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-07-25 08:54:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,459 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:54:46,459 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 08:54:46,460 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 08:54:46,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 08:54:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-07-25 08:54:46,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-07-25 08:54:46,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-07-25 08:54:46,464 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-07-25 08:54:46,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,464 INFO L472 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-07-25 08:54:46,464 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:54:46,465 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-07-25 08:54:46,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-25 08:54:46,465 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,466 INFO L354 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-07-25 08:54:46,466 INFO L415 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-07-25 08:54:46,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,541 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 08:54:46,541 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,542 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:54:46,542 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:54:46,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:54:46,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:54:46,543 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-07-25 08:54:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,559 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:54:46,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:54:46,559 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-07-25 08:54:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,560 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:54:46,560 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:54:46,561 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 08:54:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:54:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:54:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:54:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:54:46,565 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-07-25 08:54:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,565 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:54:46,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:54:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:54:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:54:46,566 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,567 INFO L354 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-07-25 08:54:46,567 INFO L415 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-07-25 08:54:46,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,661 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,661 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:54:46,662 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:54:46,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:54:46,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:54:46,663 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-07-25 08:54:46,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,685 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-07-25 08:54:46,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:54:46,685 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-07-25 08:54:46,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,686 INFO L225 Difference]: With dead ends: 28 [2018-07-25 08:54:46,686 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 08:54:46,687 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 08:54:46,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 08:54:46,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 08:54:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 08:54:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-07-25 08:54:46,702 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-07-25 08:54:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,702 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-07-25 08:54:46,702 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:54:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-07-25 08:54:46,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:54:46,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,703 INFO L354 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-07-25 08:54:46,704 INFO L415 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,705 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-07-25 08:54:46,705 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:54:46,810 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:54:46,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:54:46,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:54:46,811 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-07-25 08:54:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,825 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:54:46,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:54:46,826 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-07-25 08:54:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,826 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:54:46,826 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:54:46,827 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 08:54:46,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:54:46,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:54:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:54:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:54:46,831 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-07-25 08:54:46,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,831 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:54:46,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:54:46,832 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:54:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:54:46,832 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,833 INFO L354 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-07-25 08:54:46,833 INFO L415 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,833 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-07-25 08:54:46,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:46,926 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:46,926 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:54:46,927 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:54:46,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:54:46,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:54:46,928 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-07-25 08:54:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:46,942 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-07-25 08:54:46,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:54:46,943 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-07-25 08:54:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:46,944 INFO L225 Difference]: With dead ends: 30 [2018-07-25 08:54:46,944 INFO L226 Difference]: Without dead ends: 28 [2018-07-25 08:54:46,944 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 08:54:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-25 08:54:46,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-25 08:54:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 08:54:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-07-25 08:54:46,948 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-07-25 08:54:46,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:46,949 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-07-25 08:54:46,949 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:54:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-07-25 08:54:46,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-25 08:54:46,950 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:46,950 INFO L354 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-07-25 08:54:46,950 INFO L415 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:46,950 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-07-25 08:54:46,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:47,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:54:47,045 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:54:47,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:54:47,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:54:47,046 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-07-25 08:54:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,064 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:54:47,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:54:47,064 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-07-25 08:54:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,065 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:54:47,065 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:54:47,066 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 08:54:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:54:47,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:54:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:54:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:54:47,070 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-07-25 08:54:47,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,070 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:54:47,070 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:54:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:54:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:54:47,071 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,071 INFO L354 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-07-25 08:54:47,071 INFO L415 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,072 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-07-25 08:54:47,072 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:47,195 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:54:47,196 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:54:47,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:54:47,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:54:47,197 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-07-25 08:54:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,220 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-07-25 08:54:47,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:54:47,220 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-07-25 08:54:47,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,221 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:54:47,221 INFO L226 Difference]: Without dead ends: 30 [2018-07-25 08:54:47,227 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 08:54:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-25 08:54:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-07-25 08:54:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-25 08:54:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-07-25 08:54:47,231 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-07-25 08:54:47,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,231 INFO L472 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-07-25 08:54:47,231 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:54:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-07-25 08:54:47,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:54:47,232 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,234 INFO L354 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-07-25 08:54:47,234 INFO L415 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-07-25 08:54:47,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:47,359 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:54:47,359 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:54:47,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:54:47,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:54:47,360 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-07-25 08:54:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,385 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:54:47,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:54:47,386 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-07-25 08:54:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,387 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:54:47,387 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:54:47,388 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 08:54:47,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:54:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:54:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:54:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:54:47,392 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-07-25 08:54:47,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,393 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:54:47,393 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:54:47,393 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:54:47,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:54:47,394 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,394 INFO L354 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-07-25 08:54:47,394 INFO L415 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-07-25 08:54:47,395 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:47,530 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,530 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:54:47,530 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:54:47,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:54:47,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:54:47,532 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-07-25 08:54:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,562 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-07-25 08:54:47,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:54:47,562 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-07-25 08:54:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,563 INFO L225 Difference]: With dead ends: 34 [2018-07-25 08:54:47,563 INFO L226 Difference]: Without dead ends: 32 [2018-07-25 08:54:47,564 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 08:54:47,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-07-25 08:54:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-07-25 08:54:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 08:54:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-07-25 08:54:47,571 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-07-25 08:54:47,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,572 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-07-25 08:54:47,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:54:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-07-25 08:54:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-25 08:54:47,576 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,576 INFO L354 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-07-25 08:54:47,576 INFO L415 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-07-25 08:54:47,577 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:47,703 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:54:47,704 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:54:47,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:54:47,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:54:47,705 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-07-25 08:54:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,724 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:54:47,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:54:47,724 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-07-25 08:54:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,725 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:54:47,725 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:54:47,726 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 08:54:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:54:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:54:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:54:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:54:47,735 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-07-25 08:54:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,735 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:54:47,735 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:54:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:54:47,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:54:47,736 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,736 INFO L354 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-07-25 08:54:47,736 INFO L415 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,737 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-07-25 08:54:47,737 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:47,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:47,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:54:47,871 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:54:47,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:54:47,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:54:47,873 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-07-25 08:54:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:47,901 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-07-25 08:54:47,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:54:47,902 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-07-25 08:54:47,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:47,902 INFO L225 Difference]: With dead ends: 36 [2018-07-25 08:54:47,902 INFO L226 Difference]: Without dead ends: 34 [2018-07-25 08:54:47,904 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:54:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-25 08:54:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-07-25 08:54:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 08:54:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-07-25 08:54:47,908 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-07-25 08:54:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:47,908 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-07-25 08:54:47,908 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:54:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-07-25 08:54:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-25 08:54:47,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:47,909 INFO L354 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-07-25 08:54:47,909 INFO L415 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:47,910 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-07-25 08:54:47,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,055 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,055 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:54:48,055 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:54:48,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:54:48,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:54:48,057 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-07-25 08:54:48,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,074 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:54:48,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:54:48,075 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-07-25 08:54:48,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,076 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:54:48,076 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:54:48,077 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:54:48,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:54:48,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:54:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:54:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:54:48,080 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-07-25 08:54:48,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,081 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:54:48,081 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:54:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:54:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:54:48,082 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,082 INFO L354 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-07-25 08:54:48,082 INFO L415 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,083 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-07-25 08:54:48,083 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,233 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,234 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:54:48,234 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:54:48,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:54:48,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:54:48,235 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-07-25 08:54:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,251 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-07-25 08:54:48,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:54:48,252 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-07-25 08:54:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,252 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:54:48,252 INFO L226 Difference]: Without dead ends: 36 [2018-07-25 08:54:48,253 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:54:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-07-25 08:54:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-07-25 08:54:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-07-25 08:54:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-07-25 08:54:48,261 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-07-25 08:54:48,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,261 INFO L472 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-07-25 08:54:48,261 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:54:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-07-25 08:54:48,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-25 08:54:48,262 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,262 INFO L354 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-07-25 08:54:48,262 INFO L415 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,263 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-07-25 08:54:48,263 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:54:48,441 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:54:48,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:54:48,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:54:48,442 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-07-25 08:54:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,456 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:54:48,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:54:48,456 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-07-25 08:54:48,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,457 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:54:48,457 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:54:48,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:54:48,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:54:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:54:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:54:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:54:48,463 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-07-25 08:54:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,463 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:54:48,463 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:54:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:54:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:54:48,464 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,464 INFO L354 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-07-25 08:54:48,464 INFO L415 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-07-25 08:54:48,465 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,609 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:54:48,610 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:54:48,610 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:54:48,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:54:48,611 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-07-25 08:54:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,628 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-07-25 08:54:48,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:54:48,628 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-07-25 08:54:48,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,629 INFO L225 Difference]: With dead ends: 40 [2018-07-25 08:54:48,629 INFO L226 Difference]: Without dead ends: 38 [2018-07-25 08:54:48,630 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 08:54:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-07-25 08:54:48,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-07-25 08:54:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-07-25 08:54:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-07-25 08:54:48,633 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-07-25 08:54:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,634 INFO L472 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-07-25 08:54:48,634 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:54:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-07-25 08:54:48,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-25 08:54:48,634 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,634 INFO L354 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-07-25 08:54:48,635 INFO L415 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-07-25 08:54:48,635 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,781 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:54:48,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:54:48,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:54:48,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:54:48,784 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-07-25 08:54:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,800 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:54:48,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:54:48,801 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-07-25 08:54:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,801 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:54:48,801 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:54:48,802 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 08:54:48,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:54:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:54:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:54:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:54:48,805 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-07-25 08:54:48,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,805 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:54:48,805 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:54:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:54:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:54:48,813 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,813 INFO L354 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-07-25 08:54:48,813 INFO L415 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,814 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-07-25 08:54:48,814 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:48,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:48,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:54:48,969 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:54:48,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:54:48,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:54:48,970 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-07-25 08:54:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:48,985 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-07-25 08:54:48,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:54:48,986 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-07-25 08:54:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:48,986 INFO L225 Difference]: With dead ends: 42 [2018-07-25 08:54:48,986 INFO L226 Difference]: Without dead ends: 40 [2018-07-25 08:54:48,987 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 08:54:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-25 08:54:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-25 08:54:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-25 08:54:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-07-25 08:54:48,989 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-07-25 08:54:48,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:48,990 INFO L472 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-07-25 08:54:48,990 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:54:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-07-25 08:54:48,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-25 08:54:48,991 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:48,991 INFO L354 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-07-25 08:54:48,991 INFO L415 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:48,992 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-07-25 08:54:48,992 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:49,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:54:49,130 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:54:49,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:54:49,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:54:49,131 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-07-25 08:54:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,149 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:54:49,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:54:49,150 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-07-25 08:54:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,150 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:54:49,150 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:54:49,151 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 08:54:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:54:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:54:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:54:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:54:49,154 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-07-25 08:54:49,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,154 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:54:49,154 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:54:49,154 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:54:49,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:54:49,156 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,156 INFO L354 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-07-25 08:54:49,156 INFO L415 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-07-25 08:54:49,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:49,287 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,287 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:54:49,288 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:54:49,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:54:49,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:54:49,289 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-07-25 08:54:49,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,313 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-07-25 08:54:49,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:54:49,313 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-07-25 08:54:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,313 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:54:49,314 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 08:54:49,315 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 08:54:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 08:54:49,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-07-25 08:54:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-07-25 08:54:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-07-25 08:54:49,318 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-07-25 08:54:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,318 INFO L472 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-07-25 08:54:49,318 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:54:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-07-25 08:54:49,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-25 08:54:49,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,319 INFO L354 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-07-25 08:54:49,322 INFO L415 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-07-25 08:54:49,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:49,469 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,469 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:54:49,469 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:54:49,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:54:49,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:54:49,471 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-07-25 08:54:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,493 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:54:49,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:54:49,493 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-07-25 08:54:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,494 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:54:49,494 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:54:49,495 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 08:54:49,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:54:49,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:54:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:54:49,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:54:49,497 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-07-25 08:54:49,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,498 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:54:49,498 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:54:49,498 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:54:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:54:49,498 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,498 INFO L354 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-07-25 08:54:49,499 INFO L415 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-07-25 08:54:49,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:49,647 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,647 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:54:49,647 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:54:49,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:54:49,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:54:49,648 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-07-25 08:54:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,666 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-07-25 08:54:49,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:54:49,666 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-07-25 08:54:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,666 INFO L225 Difference]: With dead ends: 46 [2018-07-25 08:54:49,667 INFO L226 Difference]: Without dead ends: 44 [2018-07-25 08:54:49,668 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 08:54:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-25 08:54:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-25 08:54:49,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 08:54:49,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-07-25 08:54:49,670 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-07-25 08:54:49,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,670 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-07-25 08:54:49,670 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:54:49,670 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-07-25 08:54:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-25 08:54:49,671 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,671 INFO L354 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-07-25 08:54:49,671 INFO L415 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-07-25 08:54:49,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:49,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:49,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:54:49,823 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:54:49,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:54:49,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:54:49,824 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-07-25 08:54:49,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:49,848 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:54:49,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:54:49,848 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-07-25 08:54:49,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:49,849 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:54:49,849 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:54:49,850 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 08:54:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:54:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:54:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:54:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:54:49,852 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-07-25 08:54:49,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:49,852 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:54:49,852 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:54:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:54:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:54:49,853 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:49,853 INFO L354 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-07-25 08:54:49,853 INFO L415 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:49,853 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-07-25 08:54:49,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:50,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:54:50,012 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:54:50,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:54:50,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:54:50,013 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-07-25 08:54:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,031 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-07-25 08:54:50,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:54:50,031 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-07-25 08:54:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,032 INFO L225 Difference]: With dead ends: 48 [2018-07-25 08:54:50,032 INFO L226 Difference]: Without dead ends: 46 [2018-07-25 08:54:50,033 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:54:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-07-25 08:54:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-07-25 08:54:50,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-07-25 08:54:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-07-25 08:54:50,037 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-07-25 08:54:50,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,038 INFO L472 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-07-25 08:54:50,038 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:54:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-07-25 08:54:50,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-25 08:54:50,038 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,038 INFO L354 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-07-25 08:54:50,039 INFO L415 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,039 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-07-25 08:54:50,039 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:50,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:54:50,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:54:50,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:54:50,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:54:50,196 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-07-25 08:54:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,214 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:54:50,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:54:50,215 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-07-25 08:54:50,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,215 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:54:50,215 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:54:50,216 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:54:50,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:54:50,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:54:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:54:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:54:50,219 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-07-25 08:54:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,219 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:54:50,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:54:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:54:50,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:54:50,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,220 INFO L354 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-07-25 08:54:50,220 INFO L415 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,220 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-07-25 08:54:50,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:50,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:54:50,378 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:54:50,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:54:50,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:54:50,380 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-07-25 08:54:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,404 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-07-25 08:54:50,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:54:50,405 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-07-25 08:54:50,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,405 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:54:50,405 INFO L226 Difference]: Without dead ends: 48 [2018-07-25 08:54:50,406 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 08:54:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-25 08:54:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-25 08:54:50,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:54:50,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-07-25 08:54:50,409 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-07-25 08:54:50,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,409 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-07-25 08:54:50,409 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:54:50,409 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-07-25 08:54:50,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-25 08:54:50,410 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,410 INFO L354 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-07-25 08:54:50,410 INFO L415 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,410 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-07-25 08:54:50,411 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:50,597 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:54:50,597 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:54:50,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:54:50,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:54:50,599 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-07-25 08:54:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,625 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:54:50,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:54:50,626 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-07-25 08:54:50,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,627 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:54:50,627 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:54:50,628 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 08:54:50,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:54:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:54:50,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:54:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:54:50,631 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-07-25 08:54:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,631 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:54:50,631 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:54:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:54:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:54:50,632 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,632 INFO L354 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-07-25 08:54:50,632 INFO L415 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-07-25 08:54:50,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:50,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:50,848 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:54:50,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:54:50,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:54:50,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:54:50,850 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-07-25 08:54:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:50,873 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-07-25 08:54:50,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:54:50,873 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-07-25 08:54:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:50,874 INFO L225 Difference]: With dead ends: 52 [2018-07-25 08:54:50,874 INFO L226 Difference]: Without dead ends: 50 [2018-07-25 08:54:50,875 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 08:54:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-25 08:54:50,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-07-25 08:54:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-07-25 08:54:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-07-25 08:54:50,877 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-07-25 08:54:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:50,877 INFO L472 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-07-25 08:54:50,877 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:54:50,877 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-07-25 08:54:50,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-25 08:54:50,878 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:50,878 INFO L354 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-07-25 08:54:50,878 INFO L415 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-07-25 08:54:50,879 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:51,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:54:51,043 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:54:51,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:54:51,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:54:51,044 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-07-25 08:54:51,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,065 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:54:51,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:54:51,066 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-07-25 08:54:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,066 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:54:51,066 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:54:51,067 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 08:54:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:54:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:54:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:54:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:54:51,069 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-07-25 08:54:51,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,070 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:54:51,070 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:54:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:54:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:54:51,070 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,071 INFO L354 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-07-25 08:54:51,071 INFO L415 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-07-25 08:54:51,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:51,231 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:54:51,231 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:54:51,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:54:51,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:54:51,232 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-07-25 08:54:51,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,253 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-07-25 08:54:51,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:54:51,253 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-07-25 08:54:51,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,254 INFO L225 Difference]: With dead ends: 54 [2018-07-25 08:54:51,254 INFO L226 Difference]: Without dead ends: 52 [2018-07-25 08:54:51,254 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 08:54:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-07-25 08:54:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-07-25 08:54:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-07-25 08:54:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-07-25 08:54:51,257 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-07-25 08:54:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,257 INFO L472 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-07-25 08:54:51,257 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:54:51,258 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-07-25 08:54:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-25 08:54:51,258 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,258 INFO L354 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-07-25 08:54:51,258 INFO L415 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-07-25 08:54:51,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:51,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:54:51,415 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:54:51,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:54:51,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:54:51,416 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-07-25 08:54:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,440 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:54:51,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:54:51,440 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-07-25 08:54:51,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,441 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:54:51,441 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:54:51,442 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 08:54:51,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:54:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:54:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:54:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:54:51,445 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-07-25 08:54:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,445 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:54:51,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:54:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:54:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:54:51,446 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,446 INFO L354 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-07-25 08:54:51,446 INFO L415 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-07-25 08:54:51,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:51,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:54:51,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:54:51,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:54:51,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:54:51,622 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-07-25 08:54:51,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,650 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-07-25 08:54:51,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:54:51,650 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-07-25 08:54:51,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,651 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:54:51,651 INFO L226 Difference]: Without dead ends: 54 [2018-07-25 08:54:51,652 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 08:54:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-07-25 08:54:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-07-25 08:54:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-07-25 08:54:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-07-25 08:54:51,654 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-07-25 08:54:51,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,655 INFO L472 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-07-25 08:54:51,655 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:54:51,655 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-07-25 08:54:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-25 08:54:51,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,655 INFO L354 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-07-25 08:54:51,656 INFO L415 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,656 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-07-25 08:54:51,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:51,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:51,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:54:51,838 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:54:51,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:54:51,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:54:51,842 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-07-25 08:54:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:51,877 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:54:51,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:54:51,877 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-07-25 08:54:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:51,878 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:54:51,878 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:54:51,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:54:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:54:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:54:51,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:54:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:54:51,886 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-07-25 08:54:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:51,886 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:54:51,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:54:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:54:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:54:51,887 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:51,887 INFO L354 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-07-25 08:54:51,887 INFO L415 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:51,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-07-25 08:54:51,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:52,080 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,080 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:54:52,081 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:54:52,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:54:52,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:54:52,082 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-07-25 08:54:52,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,107 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-07-25 08:54:52,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:54:52,107 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-07-25 08:54:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,108 INFO L225 Difference]: With dead ends: 58 [2018-07-25 08:54:52,108 INFO L226 Difference]: Without dead ends: 56 [2018-07-25 08:54:52,109 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 08:54:52,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-07-25 08:54:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-07-25 08:54:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 08:54:52,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-07-25 08:54:52,112 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-07-25 08:54:52,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,112 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-07-25 08:54:52,112 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:54:52,112 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-07-25 08:54:52,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-25 08:54:52,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,113 INFO L354 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-07-25 08:54:52,113 INFO L415 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,114 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-07-25 08:54:52,114 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:52,315 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:54:52,316 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:54:52,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:54:52,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:54:52,317 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-07-25 08:54:52,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,345 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:54:52,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:54:52,345 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-07-25 08:54:52,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,346 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:54:52,346 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:54:52,347 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 08:54:52,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:54:52,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:54:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:54:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:54:52,350 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-07-25 08:54:52,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,350 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:54:52,350 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:54:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:54:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:54:52,351 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,351 INFO L354 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-07-25 08:54:52,351 INFO L415 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-07-25 08:54:52,352 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:52,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:54:52,550 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:54:52,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:54:52,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:54:52,552 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-07-25 08:54:52,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,585 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-07-25 08:54:52,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:54:52,585 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-07-25 08:54:52,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,586 INFO L225 Difference]: With dead ends: 60 [2018-07-25 08:54:52,586 INFO L226 Difference]: Without dead ends: 58 [2018-07-25 08:54:52,587 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 08:54:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-07-25 08:54:52,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-07-25 08:54:52,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-07-25 08:54:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-07-25 08:54:52,591 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-07-25 08:54:52,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,591 INFO L472 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-07-25 08:54:52,591 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:54:52,591 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-07-25 08:54:52,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-25 08:54:52,592 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,592 INFO L354 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-07-25 08:54:52,592 INFO L415 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-07-25 08:54:52,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:52,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:52,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:54:52,791 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:54:52,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:54:52,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:54:52,792 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-07-25 08:54:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:52,827 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:54:52,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:54:52,828 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-07-25 08:54:52,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:52,828 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:54:52,829 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:54:52,829 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 08:54:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:54:52,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:54:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:54:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:54:52,832 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-07-25 08:54:52,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:52,834 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:54:52,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:54:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:54:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:54:52,835 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:52,835 INFO L354 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-07-25 08:54:52,835 INFO L415 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:52,838 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-07-25 08:54:52,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:53,083 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,083 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:54:53,084 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:54:53,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:54:53,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:54:53,085 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-07-25 08:54:53,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:53,117 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-07-25 08:54:53,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:54:53,117 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-07-25 08:54:53,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:53,118 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:54:53,118 INFO L226 Difference]: Without dead ends: 60 [2018-07-25 08:54:53,121 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 08:54:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-07-25 08:54:53,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-07-25 08:54:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-07-25 08:54:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-07-25 08:54:53,125 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-07-25 08:54:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:53,125 INFO L472 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-07-25 08:54:53,125 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:54:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-07-25 08:54:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-25 08:54:53,126 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:53,126 INFO L354 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-07-25 08:54:53,127 INFO L415 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-07-25 08:54:53,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:53,391 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,391 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:54:53,391 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:54:53,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:54:53,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:54:53,393 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-07-25 08:54:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:53,435 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:54:53,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:54:53,435 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-07-25 08:54:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:53,436 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:54:53,436 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:54:53,437 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:54:53,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:54:53,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:54:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:54:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:54:53,440 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-07-25 08:54:53,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:53,440 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:54:53,440 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:54:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:54:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:54:53,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:53,441 INFO L354 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-07-25 08:54:53,441 INFO L415 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:53,442 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-07-25 08:54:53,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:53,649 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:54:53,650 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:54:53,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:54:53,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:54:53,652 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-07-25 08:54:53,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:53,691 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-07-25 08:54:53,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:54:53,691 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-07-25 08:54:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:53,692 INFO L225 Difference]: With dead ends: 64 [2018-07-25 08:54:53,692 INFO L226 Difference]: Without dead ends: 62 [2018-07-25 08:54:53,693 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 08:54:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-07-25 08:54:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-07-25 08:54:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-07-25 08:54:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-07-25 08:54:53,696 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-07-25 08:54:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:53,696 INFO L472 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-07-25 08:54:53,696 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:54:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-07-25 08:54:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-25 08:54:53,697 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:53,697 INFO L354 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-07-25 08:54:53,697 INFO L415 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:53,698 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-07-25 08:54:53,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:53,901 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:53,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:54:53,901 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:54:53,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:54:53,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:54:53,903 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-07-25 08:54:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:53,941 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:54:53,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:54:53,942 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-07-25 08:54:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:53,942 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:54:53,943 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:54:53,943 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 08:54:53,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:54:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:54:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:54:53,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:54:53,946 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-07-25 08:54:53,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:53,947 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:54:53,947 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:54:53,947 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:54:53,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:54:53,947 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:53,948 INFO L354 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-07-25 08:54:53,948 INFO L415 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:53,948 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-07-25 08:54:53,948 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:54,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:54,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:54:54,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:54:54,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:54:54,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:54:54,158 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-07-25 08:54:54,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:54,197 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-07-25 08:54:54,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:54:54,197 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-07-25 08:54:54,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:54,198 INFO L225 Difference]: With dead ends: 66 [2018-07-25 08:54:54,198 INFO L226 Difference]: Without dead ends: 64 [2018-07-25 08:54:54,199 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 08:54:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-07-25 08:54:54,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-07-25 08:54:54,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-07-25 08:54:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-07-25 08:54:54,202 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-07-25 08:54:54,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:54,203 INFO L472 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-07-25 08:54:54,203 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:54:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-07-25 08:54:54,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-25 08:54:54,203 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:54,204 INFO L354 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-07-25 08:54:54,204 INFO L415 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:54,204 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-07-25 08:54:54,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:54,420 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:54,420 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:54:54,421 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:54:54,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:54:54,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:54:54,422 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-07-25 08:54:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:54,461 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:54:54,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:54:54,462 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-07-25 08:54:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:54,462 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:54:54,462 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:54:54,463 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 08:54:54,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:54:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:54:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:54:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:54:54,466 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-07-25 08:54:54,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:54,467 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:54:54,467 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:54:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:54:54,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:54:54,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:54,467 INFO L354 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-07-25 08:54:54,468 INFO L415 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:54,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-07-25 08:54:54,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:54,675 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:54,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:54:54,676 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:54:54,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:54:54,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:54:54,677 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-07-25 08:54:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:54,711 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-07-25 08:54:54,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:54:54,712 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-07-25 08:54:54,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:54,712 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:54:54,712 INFO L226 Difference]: Without dead ends: 66 [2018-07-25 08:54:54,713 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 08:54:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-07-25 08:54:54,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-07-25 08:54:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-07-25 08:54:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-07-25 08:54:54,716 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-07-25 08:54:54,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:54,717 INFO L472 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-07-25 08:54:54,717 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:54:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-07-25 08:54:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-07-25 08:54:54,717 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:54,718 INFO L354 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-07-25 08:54:54,718 INFO L415 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:54,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-07-25 08:54:54,718 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:54,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:54,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:54:54,925 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:54:54,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:54:54,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:54:54,927 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-07-25 08:54:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:54,969 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:54:54,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:54:54,970 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-07-25 08:54:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:54,970 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:54:54,970 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:54:54,971 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 08:54:54,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:54:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:54:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:54:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:54:54,974 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-07-25 08:54:54,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:54,974 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:54:54,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:54:54,975 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:54:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:54:54,975 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:54,975 INFO L354 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-07-25 08:54:54,975 INFO L415 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:54,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-07-25 08:54:54,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:55,181 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:55,181 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:54:55,181 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:54:55,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:54:55,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:54:55,183 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-07-25 08:54:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:55,215 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-07-25 08:54:55,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:54:55,215 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-07-25 08:54:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:55,216 INFO L225 Difference]: With dead ends: 70 [2018-07-25 08:54:55,216 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 08:54:55,217 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 08:54:55,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 08:54:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-07-25 08:54:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-07-25 08:54:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-07-25 08:54:55,221 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-07-25 08:54:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:55,222 INFO L472 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-07-25 08:54:55,222 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:54:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-07-25 08:54:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-25 08:54:55,223 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:55,223 INFO L354 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-07-25 08:54:55,223 INFO L415 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:55,223 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-07-25 08:54:55,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:55,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:55,482 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:54:55,483 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:54:55,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:54:55,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:54:55,485 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-07-25 08:54:55,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:55,536 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:54:55,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:54:55,536 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-07-25 08:54:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:55,537 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:54:55,537 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:54:55,538 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:54:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:54:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:54:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:54:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:54:55,542 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-07-25 08:54:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:55,542 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:54:55,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:54:55,542 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:54:55,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:54:55,543 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:55,543 INFO L354 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-07-25 08:54:55,543 INFO L415 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:55,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-07-25 08:54:55,544 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:55,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:55,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:54:55,822 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:54:55,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:54:55,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:54:55,824 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-07-25 08:54:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:55,868 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-07-25 08:54:55,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:54:55,869 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-07-25 08:54:55,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:55,869 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:54:55,870 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:54:55,870 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:54:55,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:54:55,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-07-25 08:54:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-25 08:54:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-07-25 08:54:55,873 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-07-25 08:54:55,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:55,873 INFO L472 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-07-25 08:54:55,874 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:54:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-07-25 08:54:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-25 08:54:55,874 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:55,874 INFO L354 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-07-25 08:54:55,875 INFO L415 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:55,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-07-25 08:54:55,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:56,077 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:56,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:54:56,078 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:54:56,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:54:56,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:54:56,080 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-07-25 08:54:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:56,126 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:54:56,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:54:56,126 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-07-25 08:54:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:56,127 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:54:56,127 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:54:56,128 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 08:54:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:54:56,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:54:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:54:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:54:56,131 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-07-25 08:54:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:56,131 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:54:56,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:54:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:54:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:54:56,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:56,132 INFO L354 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-07-25 08:54:56,132 INFO L415 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:56,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-07-25 08:54:56,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:56,349 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:56,349 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:54:56,349 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:54:56,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:54:56,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:54:56,351 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-07-25 08:54:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:56,384 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-07-25 08:54:56,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:54:56,384 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-07-25 08:54:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:56,385 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:54:56,385 INFO L226 Difference]: Without dead ends: 72 [2018-07-25 08:54:56,386 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 08:54:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-07-25 08:54:56,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-07-25 08:54:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-07-25 08:54:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-07-25 08:54:56,389 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-07-25 08:54:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:56,389 INFO L472 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-07-25 08:54:56,390 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:54:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-07-25 08:54:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-25 08:54:56,390 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:56,391 INFO L354 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-07-25 08:54:56,391 INFO L415 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:56,391 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-07-25 08:54:56,391 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:56,613 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:56,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:54:56,614 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:54:56,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:54:56,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:54:56,615 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-07-25 08:54:56,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:56,661 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:54:56,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:54:56,661 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-07-25 08:54:56,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:56,662 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:54:56,662 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:54:56,663 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 08:54:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:54:56,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:54:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:54:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:54:56,666 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-07-25 08:54:56,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:56,667 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:54:56,667 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:54:56,667 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:54:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:54:56,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:56,668 INFO L354 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-07-25 08:54:56,668 INFO L415 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-07-25 08:54:56,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:56,883 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:56,884 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:54:56,884 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:54:56,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:54:56,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:54:56,886 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-07-25 08:54:56,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:56,935 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-07-25 08:54:56,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:54:56,936 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-07-25 08:54:56,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:56,936 INFO L225 Difference]: With dead ends: 76 [2018-07-25 08:54:56,937 INFO L226 Difference]: Without dead ends: 74 [2018-07-25 08:54:56,937 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 08:54:56,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-07-25 08:54:56,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-07-25 08:54:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-07-25 08:54:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-07-25 08:54:56,940 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-07-25 08:54:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:56,941 INFO L472 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-07-25 08:54:56,941 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:54:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-07-25 08:54:56,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-07-25 08:54:56,942 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:56,942 INFO L354 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-07-25 08:54:56,942 INFO L415 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:56,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-07-25 08:54:56,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:57,154 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:54:57,155 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:54:57,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:54:57,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:54:57,157 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-07-25 08:54:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:57,210 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:54:57,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:54:57,211 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-07-25 08:54:57,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:57,211 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:54:57,211 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:54:57,212 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 08:54:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:54:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:54:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:54:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:54:57,215 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-07-25 08:54:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:57,216 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:54:57,216 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:54:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:54:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:54:57,216 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:57,217 INFO L354 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-07-25 08:54:57,217 INFO L415 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:57,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-07-25 08:54:57,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:57,438 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:54:57,439 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:54:57,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:54:57,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:54:57,441 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-07-25 08:54:57,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:57,497 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-07-25 08:54:57,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:54:57,497 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-07-25 08:54:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:57,498 INFO L225 Difference]: With dead ends: 78 [2018-07-25 08:54:57,498 INFO L226 Difference]: Without dead ends: 76 [2018-07-25 08:54:57,499 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 08:54:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-07-25 08:54:57,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-07-25 08:54:57,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-07-25 08:54:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-07-25 08:54:57,502 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-07-25 08:54:57,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:57,502 INFO L472 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-07-25 08:54:57,502 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:54:57,502 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-07-25 08:54:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-07-25 08:54:57,503 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:57,503 INFO L354 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-07-25 08:54:57,503 INFO L415 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:57,504 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-07-25 08:54:57,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:57,725 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:57,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:54:57,725 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:54:57,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:54:57,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:54:57,727 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-07-25 08:54:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:57,783 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:54:57,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:54:57,784 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-07-25 08:54:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:57,784 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:54:57,785 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:54:57,786 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:54:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:54:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:54:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:54:57,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:54:57,789 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-07-25 08:54:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:57,789 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:54:57,789 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:54:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:54:57,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:54:57,790 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:57,790 INFO L354 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-07-25 08:54:57,791 INFO L415 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:57,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-07-25 08:54:57,791 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:58,044 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:58,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:54:58,044 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:54:58,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:54:58,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:54:58,046 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-07-25 08:54:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:58,103 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-07-25 08:54:58,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:54:58,103 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-07-25 08:54:58,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:58,104 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:54:58,104 INFO L226 Difference]: Without dead ends: 78 [2018-07-25 08:54:58,105 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 08:54:58,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-07-25 08:54:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-07-25 08:54:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-07-25 08:54:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-07-25 08:54:58,108 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-07-25 08:54:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:58,109 INFO L472 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-07-25 08:54:58,109 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:54:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-07-25 08:54:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-25 08:54:58,109 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:58,110 INFO L354 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-07-25 08:54:58,110 INFO L415 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:58,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-07-25 08:54:58,110 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:58,329 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:58,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:54:58,329 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:54:58,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:54:58,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:54:58,332 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-07-25 08:54:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:58,388 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:54:58,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:54:58,389 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-07-25 08:54:58,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:58,389 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:54:58,389 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:54:58,391 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 08:54:58,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:54:58,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:54:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:54:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:54:58,394 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-07-25 08:54:58,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:58,394 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:54:58,394 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:54:58,394 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:54:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:54:58,395 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:58,395 INFO L354 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-07-25 08:54:58,395 INFO L415 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-07-25 08:54:58,396 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:58,619 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:58,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:54:58,619 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:54:58,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:54:58,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:54:58,621 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-07-25 08:54:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:58,678 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-07-25 08:54:58,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:54:58,678 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-07-25 08:54:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:58,679 INFO L225 Difference]: With dead ends: 82 [2018-07-25 08:54:58,679 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 08:54:58,680 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 08:54:58,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 08:54:58,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-07-25 08:54:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-07-25 08:54:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-07-25 08:54:58,683 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-07-25 08:54:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:58,683 INFO L472 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-07-25 08:54:58,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:54:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-07-25 08:54:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-07-25 08:54:58,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:58,684 INFO L354 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-07-25 08:54:58,684 INFO L415 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:58,685 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-07-25 08:54:58,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:58,914 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:58,914 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:54:58,915 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:54:58,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:54:58,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:54:58,917 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-07-25 08:54:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:58,956 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:54:58,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:54:58,957 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-07-25 08:54:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:58,957 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:54:58,958 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:54:58,959 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:54:58,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:54:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:54:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:54:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:54:58,962 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-07-25 08:54:58,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:58,962 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:54:58,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:54:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:54:58,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:54:58,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:58,963 INFO L354 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-07-25 08:54:58,963 INFO L415 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:58,963 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-07-25 08:54:58,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:59,192 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:59,192 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:54:59,193 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:54:59,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:54:59,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:54:59,194 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-07-25 08:54:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:59,230 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-07-25 08:54:59,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:54:59,230 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-07-25 08:54:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:59,231 INFO L225 Difference]: With dead ends: 84 [2018-07-25 08:54:59,231 INFO L226 Difference]: Without dead ends: 82 [2018-07-25 08:54:59,232 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 08:54:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-25 08:54:59,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-07-25 08:54:59,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-07-25 08:54:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-07-25 08:54:59,235 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-07-25 08:54:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:59,236 INFO L472 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-07-25 08:54:59,236 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:54:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-07-25 08:54:59,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-07-25 08:54:59,236 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:59,237 INFO L354 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-07-25 08:54:59,237 INFO L415 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:59,237 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-07-25 08:54:59,237 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:59,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:59,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:54:59,479 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:54:59,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:54:59,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:54:59,481 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-07-25 08:54:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:59,542 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:54:59,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:54:59,542 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-07-25 08:54:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:59,543 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:54:59,543 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:54:59,544 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:54:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:54:59,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:54:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:54:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:54:59,547 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-07-25 08:54:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:59,547 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:54:59,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:54:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:54:59,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:54:59,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:59,548 INFO L354 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-07-25 08:54:59,549 INFO L415 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:59,549 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-07-25 08:54:59,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:59,850 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:59,850 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:54:59,851 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:54:59,851 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:54:59,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:54:59,852 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-07-25 08:54:59,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:59,918 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-07-25 08:54:59,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:54:59,919 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-07-25 08:54:59,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:59,920 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:54:59,920 INFO L226 Difference]: Without dead ends: 84 [2018-07-25 08:54:59,921 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:54:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-07-25 08:54:59,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-07-25 08:54:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-07-25 08:54:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-07-25 08:54:59,924 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-07-25 08:54:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:59,925 INFO L472 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-07-25 08:54:59,925 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:54:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-07-25 08:54:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-07-25 08:54:59,926 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:59,926 INFO L354 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-07-25 08:54:59,926 INFO L415 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:59,926 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-07-25 08:54:59,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:00,212 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:00,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:55:00,213 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:55:00,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:55:00,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:55:00,214 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-07-25 08:55:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:00,259 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:55:00,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:55:00,259 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-07-25 08:55:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:00,260 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:55:00,260 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:55:00,261 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:55:00,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:55:00,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:55:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:55:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:55:00,264 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-07-25 08:55:00,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:00,264 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:55:00,265 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:55:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:55:00,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:55:00,265 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:00,265 INFO L354 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-07-25 08:55:00,266 INFO L415 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:00,266 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-07-25 08:55:00,266 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:00,491 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:00,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:55:00,491 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:55:00,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:55:00,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:55:00,492 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-07-25 08:55:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:00,543 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-07-25 08:55:00,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:55:00,544 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-07-25 08:55:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:00,544 INFO L225 Difference]: With dead ends: 88 [2018-07-25 08:55:00,545 INFO L226 Difference]: Without dead ends: 86 [2018-07-25 08:55:00,545 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 08:55:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-07-25 08:55:00,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-07-25 08:55:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-07-25 08:55:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-07-25 08:55:00,548 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-07-25 08:55:00,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:00,548 INFO L472 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-07-25 08:55:00,548 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:55:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-07-25 08:55:00,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-25 08:55:00,549 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:00,549 INFO L354 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-07-25 08:55:00,550 INFO L415 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:00,550 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-07-25 08:55:00,550 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:00,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:00,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:55:00,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:55:00,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:55:00,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:55:00,789 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-07-25 08:55:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:00,868 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:55:00,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:55:00,869 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-07-25 08:55:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:00,869 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:55:00,869 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:55:00,870 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 08:55:00,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:55:00,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:55:00,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:55:00,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:55:00,873 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-07-25 08:55:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:00,874 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:55:00,874 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:55:00,874 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:55:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:55:00,874 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:00,875 INFO L354 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-07-25 08:55:00,875 INFO L415 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:00,875 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-07-25 08:55:00,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:01,138 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:01,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:55:01,138 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:55:01,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:55:01,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:55:01,140 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-07-25 08:55:01,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:01,176 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-07-25 08:55:01,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:55:01,176 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-07-25 08:55:01,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:01,177 INFO L225 Difference]: With dead ends: 90 [2018-07-25 08:55:01,177 INFO L226 Difference]: Without dead ends: 88 [2018-07-25 08:55:01,178 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:55:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-07-25 08:55:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-07-25 08:55:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-07-25 08:55:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-07-25 08:55:01,180 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-07-25 08:55:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:01,181 INFO L472 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-07-25 08:55:01,181 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:55:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-07-25 08:55:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-25 08:55:01,181 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:01,182 INFO L354 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-07-25 08:55:01,182 INFO L415 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:01,182 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-07-25 08:55:01,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:01,457 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:01,457 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:55:01,457 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:55:01,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:55:01,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:55:01,459 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-07-25 08:55:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:01,548 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:55:01,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:55:01,548 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-07-25 08:55:01,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:01,549 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:55:01,549 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:55:01,550 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 08:55:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:55:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:55:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:55:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:55:01,553 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-07-25 08:55:01,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:01,554 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:55:01,554 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:55:01,554 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:55:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:55:01,555 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:01,555 INFO L354 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-07-25 08:55:01,555 INFO L415 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:01,555 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-07-25 08:55:01,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:01,868 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:01,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:55:01,869 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:55:01,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:55:01,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:55:01,871 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-07-25 08:55:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:01,917 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-07-25 08:55:01,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:55:01,918 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-07-25 08:55:01,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:01,918 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:55:01,919 INFO L226 Difference]: Without dead ends: 90 [2018-07-25 08:55:01,920 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 08:55:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-07-25 08:55:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-07-25 08:55:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-07-25 08:55:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-07-25 08:55:01,923 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-07-25 08:55:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:01,923 INFO L472 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-07-25 08:55:01,923 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:55:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-07-25 08:55:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-25 08:55:01,924 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:01,924 INFO L354 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-07-25 08:55:01,924 INFO L415 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:01,925 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-07-25 08:55:01,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:02,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:02,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:55:02,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:55:02,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:55:02,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:55:02,258 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-07-25 08:55:02,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:02,346 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:55:02,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:55:02,347 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-07-25 08:55:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:02,347 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:55:02,348 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:55:02,348 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:55:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:55:02,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:55:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:55:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:55:02,360 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-07-25 08:55:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:02,360 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:55:02,360 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:55:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:55:02,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:55:02,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:02,361 INFO L354 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-07-25 08:55:02,361 INFO L415 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:02,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-07-25 08:55:02,361 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:02,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:02,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:55:02,594 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:55:02,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:55:02,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:55:02,596 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-07-25 08:55:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:02,631 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-07-25 08:55:02,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:55:02,631 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-07-25 08:55:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:02,632 INFO L225 Difference]: With dead ends: 94 [2018-07-25 08:55:02,632 INFO L226 Difference]: Without dead ends: 92 [2018-07-25 08:55:02,633 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 08:55:02,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-07-25 08:55:02,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-07-25 08:55:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-07-25 08:55:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-07-25 08:55:02,637 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-07-25 08:55:02,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:02,637 INFO L472 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-07-25 08:55:02,637 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:55:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-07-25 08:55:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-25 08:55:02,638 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:02,638 INFO L354 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-07-25 08:55:02,638 INFO L415 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:02,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-07-25 08:55:02,639 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:02,902 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:02,902 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:55:02,902 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:55:02,903 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:55:02,904 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:55:02,904 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-07-25 08:55:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:02,996 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:55:02,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:55:02,996 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-07-25 08:55:02,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:02,997 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:55:02,997 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:55:03,002 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:55:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:55:03,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:55:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:55:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:55:03,011 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-07-25 08:55:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:03,011 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:55:03,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:55:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:55:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:55:03,012 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:03,012 INFO L354 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-07-25 08:55:03,012 INFO L415 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:03,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-07-25 08:55:03,013 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:03,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:03,314 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:55:03,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:55:03,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:55:03,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:55:03,316 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-07-25 08:55:03,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:03,390 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-07-25 08:55:03,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:55:03,391 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-07-25 08:55:03,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:03,391 INFO L225 Difference]: With dead ends: 96 [2018-07-25 08:55:03,392 INFO L226 Difference]: Without dead ends: 94 [2018-07-25 08:55:03,393 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:55:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-07-25 08:55:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-07-25 08:55:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-07-25 08:55:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-07-25 08:55:03,396 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-07-25 08:55:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:03,396 INFO L472 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-07-25 08:55:03,396 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:55:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-07-25 08:55:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-25 08:55:03,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:03,397 INFO L354 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-07-25 08:55:03,397 INFO L415 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:03,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-07-25 08:55:03,398 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:03,647 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:03,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:55:03,648 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:55:03,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:55:03,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:55:03,650 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-07-25 08:55:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:03,695 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:55:03,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:55:03,695 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-07-25 08:55:03,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:03,696 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:55:03,696 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:55:03,697 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 08:55:03,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:55:03,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:55:03,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:55:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:55:03,700 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-07-25 08:55:03,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:03,700 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:55:03,700 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:55:03,701 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:55:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:55:03,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:03,701 INFO L354 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-07-25 08:55:03,701 INFO L415 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:03,702 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-07-25 08:55:03,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:03,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:03,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:55:03,951 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:55:03,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:55:03,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:55:03,953 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-07-25 08:55:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:04,012 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-07-25 08:55:04,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:55:04,012 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-07-25 08:55:04,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:04,013 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:55:04,013 INFO L226 Difference]: Without dead ends: 96 [2018-07-25 08:55:04,014 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 08:55:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-07-25 08:55:04,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-07-25 08:55:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:55:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-07-25 08:55:04,017 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-07-25 08:55:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:04,017 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-07-25 08:55:04,017 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:55:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-07-25 08:55:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-25 08:55:04,018 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:04,018 INFO L354 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-07-25 08:55:04,018 INFO L415 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:04,018 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-07-25 08:55:04,018 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:04,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:04,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:55:04,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:55:04,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:55:04,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:55:04,381 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-07-25 08:55:04,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:04,466 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:55:04,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:55:04,467 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-07-25 08:55:04,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:04,468 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:55:04,468 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:55:04,469 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:55:04,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:55:04,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:55:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:55:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:55:04,472 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-07-25 08:55:04,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:04,472 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:55:04,472 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:55:04,472 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:55:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:55:04,473 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:04,473 INFO L354 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-07-25 08:55:04,473 INFO L415 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:04,473 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-07-25 08:55:04,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:04,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:04,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:55:04,719 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:55:04,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:55:04,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:55:04,720 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-07-25 08:55:04,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:04,793 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-07-25 08:55:04,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:55:04,793 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-07-25 08:55:04,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:04,794 INFO L225 Difference]: With dead ends: 100 [2018-07-25 08:55:04,794 INFO L226 Difference]: Without dead ends: 98 [2018-07-25 08:55:04,795 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 08:55:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-07-25 08:55:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-07-25 08:55:04,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-25 08:55:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-07-25 08:55:04,797 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-07-25 08:55:04,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:04,798 INFO L472 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-07-25 08:55:04,798 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:55:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-07-25 08:55:04,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-25 08:55:04,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:04,798 INFO L354 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-07-25 08:55:04,798 INFO L415 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:04,799 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-07-25 08:55:04,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:05,025 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:05,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:55:05,025 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:55:05,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:55:05,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:55:05,027 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-07-25 08:55:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:05,078 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:55:05,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:55:05,078 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-07-25 08:55:05,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:05,078 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:55:05,079 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:55:05,079 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:55:05,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:55:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:55:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:55:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:55:05,082 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-07-25 08:55:05,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:05,083 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:55:05,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:55:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:55:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:55:05,083 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:05,083 INFO L354 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-07-25 08:55:05,083 INFO L415 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:05,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-07-25 08:55:05,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:05,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:05,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:55:05,319 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:55:05,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:55:05,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:55:05,321 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-07-25 08:55:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:05,365 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-07-25 08:55:05,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:55:05,365 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-07-25 08:55:05,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:05,366 INFO L225 Difference]: With dead ends: 102 [2018-07-25 08:55:05,366 INFO L226 Difference]: Without dead ends: 100 [2018-07-25 08:55:05,367 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:55:05,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-07-25 08:55:05,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-07-25 08:55:05,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-07-25 08:55:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-07-25 08:55:05,369 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-07-25 08:55:05,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:05,369 INFO L472 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-07-25 08:55:05,369 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:55:05,370 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-07-25 08:55:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-25 08:55:05,370 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:05,370 INFO L354 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-07-25 08:55:05,370 INFO L415 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:05,371 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-07-25 08:55:05,371 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:05,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:05,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:55:05,615 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:55:05,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:55:05,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:55:05,616 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-07-25 08:55:05,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:05,663 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:55:05,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:55:05,663 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-07-25 08:55:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:05,663 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:55:05,663 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:55:05,664 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:55:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:55:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:55:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:55:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:55:05,667 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-07-25 08:55:05,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:05,667 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:55:05,667 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:55:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:55:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:55:05,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:05,668 INFO L354 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-07-25 08:55:05,668 INFO L415 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:05,668 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-07-25 08:55:05,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:05,925 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:05,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:55:05,925 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:55:05,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:55:05,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:55:05,927 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-07-25 08:55:05,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:05,977 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-07-25 08:55:05,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:55:05,977 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-07-25 08:55:05,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:05,977 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:55:05,977 INFO L226 Difference]: Without dead ends: 102 [2018-07-25 08:55:05,978 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 08:55:05,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-25 08:55:05,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-07-25 08:55:05,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-07-25 08:55:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-07-25 08:55:05,981 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-07-25 08:55:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:05,981 INFO L472 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-07-25 08:55:05,981 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:55:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-07-25 08:55:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-25 08:55:05,982 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:05,982 INFO L354 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-07-25 08:55:05,982 INFO L415 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:05,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-07-25 08:55:05,982 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:06,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:06,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:55:06,258 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:55:06,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:55:06,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:55:06,260 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-07-25 08:55:06,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:06,309 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:55:06,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:55:06,310 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-07-25 08:55:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:06,310 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:55:06,310 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:55:06,311 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:55:06,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:55:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:55:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:55:06,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:55:06,313 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-07-25 08:55:06,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:06,314 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:55:06,314 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:55:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:55:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:55:06,314 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:06,315 INFO L354 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-07-25 08:55:06,315 INFO L415 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-07-25 08:55:06,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:06,576 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:06,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:55:06,576 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:55:06,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:55:06,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:55:06,578 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-07-25 08:55:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:06,631 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-07-25 08:55:06,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:55:06,631 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-07-25 08:55:06,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:06,632 INFO L225 Difference]: With dead ends: 106 [2018-07-25 08:55:06,632 INFO L226 Difference]: Without dead ends: 104 [2018-07-25 08:55:06,633 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 08:55:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-07-25 08:55:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-07-25 08:55:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-07-25 08:55:06,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-07-25 08:55:06,636 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-07-25 08:55:06,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:06,636 INFO L472 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-07-25 08:55:06,636 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:55:06,636 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-07-25 08:55:06,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-25 08:55:06,637 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:06,637 INFO L354 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-07-25 08:55:06,637 INFO L415 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:06,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-07-25 08:55:06,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:06,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:06,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:55:06,901 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:55:06,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:55:06,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:55:06,903 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-07-25 08:55:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:06,971 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:55:06,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:55:06,971 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-07-25 08:55:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:06,972 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:55:06,972 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:55:06,973 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 08:55:06,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:55:06,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:55:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:55:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:55:06,977 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-07-25 08:55:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:06,977 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:55:06,977 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:55:06,977 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:55:06,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:55:06,978 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:06,978 INFO L354 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-07-25 08:55:06,978 INFO L415 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:06,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-07-25 08:55:06,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:07,275 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:07,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:55:07,276 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:55:07,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:55:07,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:55:07,277 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-07-25 08:55:07,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:07,353 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-07-25 08:55:07,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:55:07,353 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-07-25 08:55:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:07,354 INFO L225 Difference]: With dead ends: 108 [2018-07-25 08:55:07,354 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 08:55:07,355 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 08:55:07,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 08:55:07,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-07-25 08:55:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:55:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-07-25 08:55:07,358 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-07-25 08:55:07,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:07,359 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-07-25 08:55:07,359 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:55:07,359 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-07-25 08:55:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-25 08:55:07,359 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:07,359 INFO L354 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-07-25 08:55:07,360 INFO L415 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-07-25 08:55:07,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:07,636 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:07,636 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:55:07,636 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:55:07,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:55:07,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:55:07,638 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-07-25 08:55:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:07,737 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:55:07,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:55:07,737 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-07-25 08:55:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:07,738 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:55:07,738 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:55:07,739 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 08:55:07,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:55:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:55:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:55:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:55:07,742 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-07-25 08:55:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:07,743 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:55:07,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:55:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:55:07,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:55:07,743 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:07,743 INFO L354 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-07-25 08:55:07,744 INFO L415 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:07,744 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-07-25 08:55:07,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:08,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:08,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:55:08,084 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:55:08,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:55:08,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:55:08,086 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-07-25 08:55:08,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:08,202 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-07-25 08:55:08,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:55:08,202 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-07-25 08:55:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:08,203 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:55:08,203 INFO L226 Difference]: Without dead ends: 108 [2018-07-25 08:55:08,204 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 08:55:08,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-07-25 08:55:08,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-07-25 08:55:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-07-25 08:55:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-07-25 08:55:08,207 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-07-25 08:55:08,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:08,207 INFO L472 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-07-25 08:55:08,207 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:55:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-07-25 08:55:08,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-07-25 08:55:08,208 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:08,208 INFO L354 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-07-25 08:55:08,208 INFO L415 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:08,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-07-25 08:55:08,208 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:08,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:08,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:08,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:55:08,593 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:55:08,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:55:08,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:55:08,595 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-07-25 08:55:08,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:08,661 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:55:08,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:55:08,661 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-07-25 08:55:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:08,662 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:55:08,662 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:55:08,663 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 08:55:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:55:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:55:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:55:08,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:55:08,666 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-07-25 08:55:08,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:08,667 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:55:08,667 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:55:08,667 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:55:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:55:08,667 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:08,667 INFO L354 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-07-25 08:55:08,668 INFO L415 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:08,668 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-07-25 08:55:08,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:08,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:08,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:55:08,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:55:08,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:55:08,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:55:08,962 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-07-25 08:55:09,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:09,017 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-07-25 08:55:09,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:55:09,017 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-07-25 08:55:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:09,017 INFO L225 Difference]: With dead ends: 112 [2018-07-25 08:55:09,018 INFO L226 Difference]: Without dead ends: 110 [2018-07-25 08:55:09,019 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 08:55:09,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-07-25 08:55:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-07-25 08:55:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-07-25 08:55:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-07-25 08:55:09,022 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-07-25 08:55:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:09,022 INFO L472 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-07-25 08:55:09,022 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:55:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-07-25 08:55:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-25 08:55:09,023 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:09,023 INFO L354 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-07-25 08:55:09,023 INFO L415 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:09,023 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-07-25 08:55:09,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:09,316 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:09,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:55:09,317 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:55:09,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:55:09,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:55:09,319 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-07-25 08:55:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:09,430 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:55:09,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:55:09,431 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-07-25 08:55:09,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:09,431 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:55:09,431 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:55:09,433 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:55:09,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:55:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:55:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:55:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:55:09,436 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-07-25 08:55:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:09,436 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:55:09,436 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:55:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:55:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:55:09,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:09,437 INFO L354 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-07-25 08:55:09,437 INFO L415 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:09,437 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-07-25 08:55:09,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:09,740 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:09,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:55:09,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:55:09,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:55:09,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:55:09,743 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-07-25 08:55:09,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:09,861 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-07-25 08:55:09,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:55:09,862 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-07-25 08:55:09,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:09,862 INFO L225 Difference]: With dead ends: 114 [2018-07-25 08:55:09,862 INFO L226 Difference]: Without dead ends: 112 [2018-07-25 08:55:09,863 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 08:55:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-07-25 08:55:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-07-25 08:55:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-07-25 08:55:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-07-25 08:55:09,865 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-07-25 08:55:09,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:09,866 INFO L472 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-07-25 08:55:09,866 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:55:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-07-25 08:55:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-25 08:55:09,866 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:09,866 INFO L354 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-07-25 08:55:09,867 INFO L415 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:09,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-07-25 08:55:09,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:10,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:10,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:55:10,217 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:55:10,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:55:10,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:55:10,219 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-07-25 08:55:10,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:10,314 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:55:10,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:55:10,315 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-07-25 08:55:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:10,315 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:55:10,315 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:55:10,316 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 08:55:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:55:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:55:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:55:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:55:10,319 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-07-25 08:55:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:10,319 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:55:10,319 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:55:10,320 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:55:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:55:10,320 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:10,320 INFO L354 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-07-25 08:55:10,321 INFO L415 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:10,321 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-07-25 08:55:10,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:10,679 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:10,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:55:10,680 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:55:10,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:55:10,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:55:10,681 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-07-25 08:55:10,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:10,808 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-07-25 08:55:10,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:55:10,808 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-07-25 08:55:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:10,809 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:55:10,809 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 08:55:10,810 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 08:55:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 08:55:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-07-25 08:55:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-07-25 08:55:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-07-25 08:55:10,814 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-07-25 08:55:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:10,815 INFO L472 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-07-25 08:55:10,815 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:55:10,815 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-07-25 08:55:10,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-25 08:55:10,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:10,816 INFO L354 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-07-25 08:55:10,816 INFO L415 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:10,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-07-25 08:55:10,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:11,214 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:11,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:55:11,214 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:55:11,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:55:11,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:55:11,216 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-07-25 08:55:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:11,267 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:55:11,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:55:11,268 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-07-25 08:55:11,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:11,268 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:55:11,268 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:55:11,270 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:55:11,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:55:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:55:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:55:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:55:11,272 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-07-25 08:55:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:11,272 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:55:11,272 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:55:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:55:11,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:55:11,273 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:11,273 INFO L354 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-07-25 08:55:11,273 INFO L415 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-07-25 08:55:11,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:11,590 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:11,590 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:55:11,590 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:55:11,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:55:11,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:55:11,592 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-07-25 08:55:11,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:11,726 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-07-25 08:55:11,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:55:11,727 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-07-25 08:55:11,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:11,727 INFO L225 Difference]: With dead ends: 118 [2018-07-25 08:55:11,727 INFO L226 Difference]: Without dead ends: 116 [2018-07-25 08:55:11,728 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 08:55:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-07-25 08:55:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-07-25 08:55:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-07-25 08:55:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-07-25 08:55:11,731 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-07-25 08:55:11,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:11,731 INFO L472 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-07-25 08:55:11,731 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:55:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-07-25 08:55:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-25 08:55:11,732 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:11,732 INFO L354 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-07-25 08:55:11,733 INFO L415 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:11,733 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-07-25 08:55:11,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:12,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:12,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:55:12,241 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:55:12,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:55:12,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:55:12,244 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-07-25 08:55:12,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:12,331 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:55:12,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:55:12,331 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-07-25 08:55:12,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:12,332 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:55:12,332 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:55:12,333 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:55:12,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:55:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:55:12,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:55:12,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:55:12,336 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-07-25 08:55:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:12,336 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:55:12,336 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:55:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:55:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:55:12,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:12,337 INFO L354 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-07-25 08:55:12,337 INFO L415 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005306, now seen corresponding path program 113 times [2018-07-25 08:55:12,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:12,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:12,663 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:55:12,663 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:55:12,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:55:12,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:55:12,664 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-07-25 08:55:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:12,753 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-07-25 08:55:12,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:55:12,753 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-07-25 08:55:12,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:12,754 INFO L225 Difference]: With dead ends: 120 [2018-07-25 08:55:12,754 INFO L226 Difference]: Without dead ends: 118 [2018-07-25 08:55:12,755 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:55:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-07-25 08:55:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-07-25 08:55:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:55:12,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-07-25 08:55:12,758 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-07-25 08:55:12,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:12,759 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-07-25 08:55:12,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:55:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-07-25 08:55:12,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-25 08:55:12,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:12,760 INFO L354 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-07-25 08:55:12,760 INFO L415 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:12,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439200, now seen corresponding path program 114 times [2018-07-25 08:55:12,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:13,189 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:13,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:55:13,189 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:55:13,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:55:13,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:55:13,191 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-07-25 08:55:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:13,298 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:55:13,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:55:13,298 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-07-25 08:55:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:13,299 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:55:13,299 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:55:13,300 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:55:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:55:13,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:55:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:55:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:55:13,304 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-07-25 08:55:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:13,304 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:55:13,305 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:55:13,305 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:55:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:55:13,305 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:13,306 INFO L354 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-07-25 08:55:13,306 INFO L415 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:13,306 INFO L82 PathProgramCache]: Analyzing trace with hash 954069190, now seen corresponding path program 115 times [2018-07-25 08:55:13,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:13,688 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:13,688 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:55:13,688 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:55:13,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:55:13,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:55:13,690 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-07-25 08:55:13,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:13,840 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-07-25 08:55:13,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:55:13,840 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-07-25 08:55:13,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:13,841 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:55:13,841 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:55:13,842 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 08:55:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:55:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-07-25 08:55:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-07-25 08:55:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-07-25 08:55:13,846 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-07-25 08:55:13,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:13,846 INFO L472 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-07-25 08:55:13,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:55:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-07-25 08:55:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-25 08:55:13,847 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:13,847 INFO L354 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-07-25 08:55:13,847 INFO L415 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:13,847 INFO L82 PathProgramCache]: Analyzing trace with hash -488630048, now seen corresponding path program 116 times [2018-07-25 08:55:13,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:14,166 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:14,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:55:14,166 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:55:14,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:55:14,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:55:14,168 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-07-25 08:55:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:14,282 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:55:14,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:55:14,282 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-07-25 08:55:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:14,283 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:55:14,283 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:55:14,284 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:55:14,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:55:14,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:55:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:55:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:55:14,287 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-07-25 08:55:14,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:14,287 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:55:14,287 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:55:14,287 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:55:14,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:55:14,288 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:14,288 INFO L354 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-07-25 08:55:14,288 INFO L415 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:14,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2032333830, now seen corresponding path program 117 times [2018-07-25 08:55:14,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:14,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:14,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:55:14,662 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:55:14,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:55:14,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:55:14,664 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-07-25 08:55:14,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:14,802 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-07-25 08:55:14,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:55:14,802 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-07-25 08:55:14,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:14,802 INFO L225 Difference]: With dead ends: 124 [2018-07-25 08:55:14,803 INFO L226 Difference]: Without dead ends: 122 [2018-07-25 08:55:14,804 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:55:14,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-07-25 08:55:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-07-25 08:55:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-07-25 08:55:14,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-07-25 08:55:14,807 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-07-25 08:55:14,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:14,807 INFO L472 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-07-25 08:55:14,807 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:55:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-07-25 08:55:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-25 08:55:14,808 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:14,808 INFO L354 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-07-25 08:55:14,808 INFO L415 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:14,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1422164576, now seen corresponding path program 118 times [2018-07-25 08:55:14,808 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:15,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:15,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:55:15,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:55:15,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:55:15,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:55:15,148 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-07-25 08:55:15,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:15,260 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:55:15,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:55:15,260 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-07-25 08:55:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:15,261 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:55:15,261 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:55:15,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:55:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:55:15,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:55:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:55:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:55:15,264 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-07-25 08:55:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:15,264 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:55:15,264 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:55:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:55:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:55:15,265 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:15,265 INFO L354 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-07-25 08:55:15,265 INFO L415 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1137432762, now seen corresponding path program 119 times [2018-07-25 08:55:15,266 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:15,649 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 08:55:15,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:15,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:55:15,650 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:55:15,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:55:15,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:55:15,651 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-07-25 08:55:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:15,712 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-07-25 08:55:15,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:55:15,712 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-07-25 08:55:15,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:15,713 INFO L225 Difference]: With dead ends: 126 [2018-07-25 08:55:15,713 INFO L226 Difference]: Without dead ends: 124 [2018-07-25 08:55:15,714 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:55:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-07-25 08:55:15,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-07-25 08:55:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-07-25 08:55:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-07-25 08:55:15,717 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-07-25 08:55:15,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:15,717 INFO L472 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-07-25 08:55:15,717 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:55:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-07-25 08:55:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-25 08:55:15,718 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:15,718 INFO L354 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-07-25 08:55:15,718 INFO L415 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:15,719 INFO L82 PathProgramCache]: Analyzing trace with hash -900681120, now seen corresponding path program 120 times [2018-07-25 08:55:15,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:16,046 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:16,046 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:55:16,046 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:55:16,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:55:16,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:55:16,048 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-07-25 08:55:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:16,165 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:55:16,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:55:16,166 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-07-25 08:55:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:16,166 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:55:16,166 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:55:16,167 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 08:55:16,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:55:16,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:55:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:55:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:55:16,171 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-07-25 08:55:16,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:16,171 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:55:16,171 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:55:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:55:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:55:16,172 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:16,172 INFO L354 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-07-25 08:55:16,172 INFO L415 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:16,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2143652486, now seen corresponding path program 121 times [2018-07-25 08:55:16,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:16,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:16,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:55:16,549 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:55:16,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:55:16,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:55:16,551 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-07-25 08:55:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:16,680 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-07-25 08:55:16,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:55:16,680 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-07-25 08:55:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:16,681 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:55:16,681 INFO L226 Difference]: Without dead ends: 126 [2018-07-25 08:55:16,683 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 08:55:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-07-25 08:55:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-07-25 08:55:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-07-25 08:55:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-07-25 08:55:16,686 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-07-25 08:55:16,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:16,686 INFO L472 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-07-25 08:55:16,686 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:55:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-07-25 08:55:16,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-25 08:55:16,687 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:16,687 INFO L354 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-07-25 08:55:16,687 INFO L415 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:16,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2028713760, now seen corresponding path program 122 times [2018-07-25 08:55:16,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:17,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:17,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:55:17,063 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:55:17,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:55:17,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:55:17,064 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-07-25 08:55:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:17,216 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:55:17,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:55:17,217 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-07-25 08:55:17,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:17,217 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:55:17,217 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:55:17,219 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:55:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:55:17,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:55:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:55:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:55:17,222 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-07-25 08:55:17,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:17,222 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:55:17,222 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:55:17,222 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:55:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:55:17,223 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:17,223 INFO L354 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-07-25 08:55:17,223 INFO L415 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:17,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1534386746, now seen corresponding path program 123 times [2018-07-25 08:55:17,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:17,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:17,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:55:17,594 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:55:17,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:55:17,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:55:17,596 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-07-25 08:55:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:17,691 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-07-25 08:55:17,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:55:17,691 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-07-25 08:55:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:17,691 INFO L225 Difference]: With dead ends: 130 [2018-07-25 08:55:17,691 INFO L226 Difference]: Without dead ends: 128 [2018-07-25 08:55:17,692 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 08:55:17,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-07-25 08:55:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-07-25 08:55:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-07-25 08:55:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-07-25 08:55:17,695 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-07-25 08:55:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:17,695 INFO L472 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-07-25 08:55:17,695 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:55:17,695 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-07-25 08:55:17,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-25 08:55:17,696 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:17,696 INFO L354 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-07-25 08:55:17,696 INFO L415 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:17,696 INFO L82 PathProgramCache]: Analyzing trace with hash -321352736, now seen corresponding path program 124 times [2018-07-25 08:55:17,696 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:18,183 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:18,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:55:18,183 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:55:18,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:55:18,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:55:18,186 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-07-25 08:55:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:18,429 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:55:18,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:55:18,429 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-07-25 08:55:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:18,430 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:55:18,430 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:55:18,431 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 08:55:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:55:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:55:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:55:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:55:18,433 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-07-25 08:55:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:18,433 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:55:18,433 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:55:18,433 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:55:18,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:55:18,434 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:18,434 INFO L354 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-07-25 08:55:18,434 INFO L415 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:18,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1372004090, now seen corresponding path program 125 times [2018-07-25 08:55:18,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:18,807 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:18,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:55:18,808 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:55:18,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:55:18,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:55:18,811 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-07-25 08:55:18,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:18,904 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-07-25 08:55:18,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:55:18,904 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-07-25 08:55:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:18,904 INFO L225 Difference]: With dead ends: 132 [2018-07-25 08:55:18,904 INFO L226 Difference]: Without dead ends: 130 [2018-07-25 08:55:18,906 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:55:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-07-25 08:55:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-07-25 08:55:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-07-25 08:55:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-07-25 08:55:18,909 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-07-25 08:55:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:18,909 INFO L472 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-07-25 08:55:18,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:55:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-07-25 08:55:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-25 08:55:18,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:18,910 INFO L354 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-07-25 08:55:18,910 INFO L415 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:18,910 INFO L82 PathProgramCache]: Analyzing trace with hash 417542304, now seen corresponding path program 126 times [2018-07-25 08:55:18,911 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:19,341 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:19,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:55:19,341 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:55:19,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:55:19,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:55:19,344 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-07-25 08:55:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:19,594 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:55:19,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:55:19,594 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-07-25 08:55:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:19,595 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:55:19,595 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:55:19,596 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 08:55:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:55:19,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:55:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:55:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:55:19,599 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-07-25 08:55:19,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:19,600 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:55:19,600 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:55:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:55:19,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:55:19,600 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:19,601 INFO L354 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-07-25 08:55:19,601 INFO L415 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:19,601 INFO L82 PathProgramCache]: Analyzing trace with hash 58905670, now seen corresponding path program 127 times [2018-07-25 08:55:19,601 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:20,205 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:20,205 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:55:20,206 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:55:20,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:55:20,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:55:20,215 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-07-25 08:55:20,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:20,332 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-07-25 08:55:20,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:55:20,333 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-07-25 08:55:20,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:20,333 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:55:20,333 INFO L226 Difference]: Without dead ends: 132 [2018-07-25 08:55:20,335 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:55:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-07-25 08:55:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-07-25 08:55:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-07-25 08:55:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-07-25 08:55:20,339 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-07-25 08:55:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:20,339 INFO L472 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-07-25 08:55:20,341 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:55:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-07-25 08:55:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-25 08:55:20,342 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:20,342 INFO L354 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-07-25 08:55:20,342 INFO L415 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:20,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1826071904, now seen corresponding path program 128 times [2018-07-25 08:55:20,342 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:20,784 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:20,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:55:20,784 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:55:20,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:55:20,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:55:20,787 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-07-25 08:55:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:20,973 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:55:20,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:55:20,973 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-07-25 08:55:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:20,973 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:55:20,974 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:55:20,975 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 08:55:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:55:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:55:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:55:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:55:20,977 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-07-25 08:55:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:20,977 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:55:20,978 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:55:20,978 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:55:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:55:20,978 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:20,978 INFO L354 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-07-25 08:55:20,978 INFO L415 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:20,978 INFO L82 PathProgramCache]: Analyzing trace with hash 773650310, now seen corresponding path program 129 times [2018-07-25 08:55:20,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:21,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:21,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:55:21,450 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:55:21,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:55:21,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:55:21,452 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-07-25 08:55:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:21,764 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-07-25 08:55:21,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:55:21,764 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-07-25 08:55:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:21,765 INFO L225 Difference]: With dead ends: 136 [2018-07-25 08:55:21,765 INFO L226 Difference]: Without dead ends: 134 [2018-07-25 08:55:21,766 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 08:55:21,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-07-25 08:55:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-07-25 08:55:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-07-25 08:55:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-07-25 08:55:21,769 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-07-25 08:55:21,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:21,769 INFO L472 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-07-25 08:55:21,769 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:55:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-07-25 08:55:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-25 08:55:21,770 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:21,770 INFO L354 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-07-25 08:55:21,770 INFO L415 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:21,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1786648032, now seen corresponding path program 130 times [2018-07-25 08:55:21,771 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:22,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:22,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:55:22,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:55:22,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:55:22,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:55:22,222 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-07-25 08:55:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:22,374 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:55:22,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:55:22,375 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-07-25 08:55:22,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:22,375 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:55:22,375 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:55:22,377 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 08:55:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:55:22,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:55:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:55:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:55:22,380 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-07-25 08:55:22,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:22,380 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:55:22,380 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:55:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:55:22,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:55:22,381 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:22,381 INFO L354 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-07-25 08:55:22,381 INFO L415 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:22,382 INFO L82 PathProgramCache]: Analyzing trace with hash 448481990, now seen corresponding path program 131 times [2018-07-25 08:55:22,382 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:22,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:22,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:55:22,839 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:55:22,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:55:22,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:55:22,841 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-07-25 08:55:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:23,051 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-07-25 08:55:23,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:55:23,051 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-07-25 08:55:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:23,052 INFO L225 Difference]: With dead ends: 138 [2018-07-25 08:55:23,052 INFO L226 Difference]: Without dead ends: 136 [2018-07-25 08:55:23,053 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 08:55:23,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-07-25 08:55:23,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-07-25 08:55:23,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-07-25 08:55:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-07-25 08:55:23,056 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-07-25 08:55:23,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:23,057 INFO L472 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-07-25 08:55:23,057 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:55:23,057 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-07-25 08:55:23,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-25 08:55:23,057 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:23,058 INFO L354 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-07-25 08:55:23,058 INFO L415 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:23,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1018035936, now seen corresponding path program 132 times [2018-07-25 08:55:23,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:23,567 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:23,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:55:23,568 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:55:23,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:55:23,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:55:23,570 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-07-25 08:55:23,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:23,754 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:55:23,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:55:23,754 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-07-25 08:55:23,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:23,754 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:55:23,755 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:55:23,756 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:55:23,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:55:23,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:55:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:55:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:55:23,759 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-07-25 08:55:23,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:23,759 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:55:23,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:55:23,760 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:55:23,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:55:23,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:23,760 INFO L354 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-07-25 08:55:23,761 INFO L415 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:23,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1494339078, now seen corresponding path program 133 times [2018-07-25 08:55:23,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:24,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:24,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:55:24,250 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:55:24,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:55:24,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:55:24,253 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-07-25 08:55:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:24,427 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-07-25 08:55:24,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:55:24,427 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-07-25 08:55:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:24,428 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:55:24,428 INFO L226 Difference]: Without dead ends: 138 [2018-07-25 08:55:24,430 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:55:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-07-25 08:55:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-07-25 08:55:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-07-25 08:55:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-07-25 08:55:24,433 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-07-25 08:55:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:24,433 INFO L472 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-07-25 08:55:24,433 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:55:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-07-25 08:55:24,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-25 08:55:24,434 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:24,434 INFO L354 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-07-25 08:55:24,434 INFO L415 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:24,434 INFO L82 PathProgramCache]: Analyzing trace with hash -920132704, now seen corresponding path program 134 times [2018-07-25 08:55:24,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:25,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:25,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:55:25,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:55:25,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:55:25,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:55:25,104 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-07-25 08:55:25,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:25,323 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:55:25,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:55:25,323 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-07-25 08:55:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:25,323 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:55:25,323 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:55:25,324 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:55:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:55:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:55:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:55:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:55:25,327 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-07-25 08:55:25,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:25,327 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:55:25,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:55:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:55:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:55:25,328 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:25,328 INFO L354 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-07-25 08:55:25,328 INFO L415 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:25,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1540653382, now seen corresponding path program 135 times [2018-07-25 08:55:25,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:25,782 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:25,782 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:55:25,782 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:55:25,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:55:25,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:55:25,784 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-07-25 08:55:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:26,018 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-07-25 08:55:26,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:55:26,018 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-07-25 08:55:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:26,019 INFO L225 Difference]: With dead ends: 142 [2018-07-25 08:55:26,019 INFO L226 Difference]: Without dead ends: 140 [2018-07-25 08:55:26,021 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:55:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-07-25 08:55:26,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-07-25 08:55:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-07-25 08:55:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-07-25 08:55:26,024 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-07-25 08:55:26,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:26,024 INFO L472 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-07-25 08:55:26,024 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:55:26,025 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-07-25 08:55:26,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-25 08:55:26,025 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:26,025 INFO L354 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-07-25 08:55:26,026 INFO L415 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:26,026 INFO L82 PathProgramCache]: Analyzing trace with hash 515610720, now seen corresponding path program 136 times [2018-07-25 08:55:26,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:26,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:26,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:55:26,462 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:55:26,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:55:26,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:55:26,464 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-07-25 08:55:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:26,550 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:55:26,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:55:26,550 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-07-25 08:55:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:26,551 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:55:26,551 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:55:26,552 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 08:55:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:55:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:55:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:55:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:55:26,554 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-07-25 08:55:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:26,554 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:55:26,554 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:55:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:55:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:55:26,555 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:26,555 INFO L354 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-07-25 08:55:26,555 INFO L415 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:26,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940730, now seen corresponding path program 137 times [2018-07-25 08:55:26,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:26,986 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:26,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:55:26,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:55:26,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:55:26,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:55:26,990 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-07-25 08:55:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:27,190 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-07-25 08:55:27,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:55:27,191 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-07-25 08:55:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:27,191 INFO L225 Difference]: With dead ends: 144 [2018-07-25 08:55:27,191 INFO L226 Difference]: Without dead ends: 142 [2018-07-25 08:55:27,193 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 08:55:27,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-07-25 08:55:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-07-25 08:55:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-07-25 08:55:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-07-25 08:55:27,195 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-07-25 08:55:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:27,195 INFO L472 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-07-25 08:55:27,195 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:55:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-07-25 08:55:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-25 08:55:27,195 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:27,195 INFO L354 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-07-25 08:55:27,195 INFO L415 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:27,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1580539168, now seen corresponding path program 138 times [2018-07-25 08:55:27,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:27,642 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:27,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:55:27,643 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:55:27,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:55:27,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:55:27,646 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-07-25 08:55:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:27,855 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:55:27,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:55:27,855 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-07-25 08:55:27,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:27,855 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:55:27,855 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:55:27,857 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 08:55:27,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:55:27,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:55:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:55:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:55:27,859 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-07-25 08:55:27,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:27,859 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:55:27,859 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:55:27,859 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:55:27,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:55:27,860 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:27,860 INFO L354 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-07-25 08:55:27,860 INFO L415 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:27,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1752070086, now seen corresponding path program 139 times [2018-07-25 08:55:27,861 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:28,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:28,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:55:28,332 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:55:28,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:55:28,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:55:28,334 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-07-25 08:55:28,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:28,590 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-07-25 08:55:28,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:55:28,590 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-07-25 08:55:28,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:28,590 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:55:28,591 INFO L226 Difference]: Without dead ends: 144 [2018-07-25 08:55:28,592 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:55:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-07-25 08:55:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-07-25 08:55:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-07-25 08:55:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-07-25 08:55:28,594 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-07-25 08:55:28,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:28,595 INFO L472 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-07-25 08:55:28,595 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:55:28,595 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-07-25 08:55:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-25 08:55:28,596 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:28,596 INFO L354 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-07-25 08:55:28,596 INFO L415 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:28,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1520406048, now seen corresponding path program 140 times [2018-07-25 08:55:28,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:29,075 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:29,075 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:55:29,076 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:55:29,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:55:29,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:55:29,078 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-07-25 08:55:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:29,278 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:55:29,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:55:29,278 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-07-25 08:55:29,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:29,279 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:55:29,279 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:55:29,280 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:55:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:55:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:55:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:55:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:55:29,283 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-07-25 08:55:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:29,283 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:55:29,283 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:55:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:55:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:55:29,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:29,284 INFO L354 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-07-25 08:55:29,284 INFO L415 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:29,284 INFO L82 PathProgramCache]: Analyzing trace with hash 112048902, now seen corresponding path program 141 times [2018-07-25 08:55:29,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:29,763 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:29,763 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:55:29,763 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:55:29,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:55:29,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:55:29,766 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-07-25 08:55:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:29,867 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-07-25 08:55:29,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:55:29,868 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-07-25 08:55:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:29,868 INFO L225 Difference]: With dead ends: 148 [2018-07-25 08:55:29,868 INFO L226 Difference]: Without dead ends: 146 [2018-07-25 08:55:29,870 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:55:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-07-25 08:55:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-07-25 08:55:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-07-25 08:55:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-07-25 08:55:29,872 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-07-25 08:55:29,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:29,873 INFO L472 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-07-25 08:55:29,873 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:55:29,873 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-07-25 08:55:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-25 08:55:29,873 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:29,873 INFO L354 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-07-25 08:55:29,873 INFO L415 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:29,874 INFO L82 PathProgramCache]: Analyzing trace with hash -821455200, now seen corresponding path program 142 times [2018-07-25 08:55:29,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:30,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:30,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:55:30,353 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:55:30,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:55:30,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:55:30,356 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-07-25 08:55:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:30,477 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:55:30,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:55:30,477 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-07-25 08:55:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:30,477 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:55:30,477 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:55:30,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:55:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:55:30,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:55:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:55:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:55:30,481 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-07-25 08:55:30,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:30,481 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:55:30,481 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:55:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:55:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:55:30,482 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:30,482 INFO L354 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-07-25 08:55:30,482 INFO L415 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:30,483 INFO L82 PathProgramCache]: Analyzing trace with hash 304688710, now seen corresponding path program 143 times [2018-07-25 08:55:30,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:31,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:31,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:55:31,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:55:31,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:55:31,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:55:31,091 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. [2018-07-25 08:55:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:31,316 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-07-25 08:55:31,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:55:31,316 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 146 [2018-07-25 08:55:31,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:31,317 INFO L225 Difference]: With dead ends: 150 [2018-07-25 08:55:31,317 INFO L226 Difference]: Without dead ends: 148 [2018-07-25 08:55:31,318 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:55:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-07-25 08:55:31,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-07-25 08:55:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-07-25 08:55:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-07-25 08:55:31,321 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-07-25 08:55:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:31,321 INFO L472 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-07-25 08:55:31,321 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:55:31,321 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-07-25 08:55:31,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-07-25 08:55:31,322 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:31,322 INFO L354 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-07-25 08:55:31,322 INFO L415 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:31,322 INFO L82 PathProgramCache]: Analyzing trace with hash 855411552, now seen corresponding path program 144 times [2018-07-25 08:55:31,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:31,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:31,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:55:31,803 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:55:31,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:55:31,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:55:31,807 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 147 states. [2018-07-25 08:55:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:32,087 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:55:32,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:55:32,087 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 147 [2018-07-25 08:55:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:32,087 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:55:32,088 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:55:32,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:55:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:55:32,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:55:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:55:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:55:32,091 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-07-25 08:55:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:32,092 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:55:32,092 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:55:32,092 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:55:32,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:55:32,092 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:32,092 INFO L354 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-07-25 08:55:32,092 INFO L415 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:32,093 INFO L82 PathProgramCache]: Analyzing trace with hash 747950470, now seen corresponding path program 145 times [2018-07-25 08:55:32,093 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:32,654 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:32,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:55:32,654 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:55:32,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:55:32,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:55:32,657 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 148 states. [2018-07-25 08:55:32,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:32,953 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-07-25 08:55:32,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:55:32,953 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 148 [2018-07-25 08:55:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:32,954 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:55:32,954 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:55:32,955 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 08:55:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:55:32,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-07-25 08:55:32,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-07-25 08:55:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-07-25 08:55:32,958 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-07-25 08:55:32,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:32,958 INFO L472 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-07-25 08:55:32,958 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:55:32,958 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-07-25 08:55:32,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-25 08:55:32,959 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:32,959 INFO L354 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-07-25 08:55:32,959 INFO L415 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:32,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1711624224, now seen corresponding path program 146 times [2018-07-25 08:55:32,959 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:33,509 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:33,509 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:55:33,510 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:55:33,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:55:33,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:55:33,512 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 149 states. [2018-07-25 08:55:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:33,787 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:55:33,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:55:33,787 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 149 [2018-07-25 08:55:33,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:33,788 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:55:33,788 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:55:33,790 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 08:55:33,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:55:33,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:55:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:55:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:55:33,793 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-07-25 08:55:33,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:33,793 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:55:33,793 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:55:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:55:33,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:55:33,794 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:33,794 INFO L354 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-07-25 08:55:33,794 INFO L415 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:33,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1520739526, now seen corresponding path program 147 times [2018-07-25 08:55:33,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:34,381 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:34,381 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:55:34,381 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:55:34,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:55:34,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:55:34,384 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 150 states. [2018-07-25 08:55:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:34,676 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-07-25 08:55:34,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:55:34,676 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 150 [2018-07-25 08:55:34,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:34,677 INFO L225 Difference]: With dead ends: 154 [2018-07-25 08:55:34,677 INFO L226 Difference]: Without dead ends: 152 [2018-07-25 08:55:34,678 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 08:55:34,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-07-25 08:55:34,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-07-25 08:55:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-07-25 08:55:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-07-25 08:55:34,680 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-07-25 08:55:34,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:34,680 INFO L472 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-07-25 08:55:34,680 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:55:34,680 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-07-25 08:55:34,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-25 08:55:34,681 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:34,681 INFO L354 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-07-25 08:55:34,681 INFO L415 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:34,681 INFO L82 PathProgramCache]: Analyzing trace with hash -101718816, now seen corresponding path program 148 times [2018-07-25 08:55:34,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:35,273 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:35,273 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:55:35,273 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:55:35,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:55:35,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:55:35,275 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 151 states. [2018-07-25 08:55:35,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:35,580 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:55:35,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:55:35,580 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 151 [2018-07-25 08:55:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:35,581 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:55:35,581 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:55:35,582 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:55:35,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:55:35,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:55:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:55:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:55:35,584 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-07-25 08:55:35,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:35,584 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:55:35,584 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:55:35,584 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:55:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:55:35,585 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:35,585 INFO L354 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-07-25 08:55:35,585 INFO L415 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:35,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1141680134, now seen corresponding path program 149 times [2018-07-25 08:55:35,585 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:36,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:36,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:55:36,117 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:55:36,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:55:36,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:55:36,120 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 152 states. [2018-07-25 08:55:36,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:36,441 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-07-25 08:55:36,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:55:36,441 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 152 [2018-07-25 08:55:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:36,441 INFO L225 Difference]: With dead ends: 156 [2018-07-25 08:55:36,441 INFO L226 Difference]: Without dead ends: 154 [2018-07-25 08:55:36,443 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 08:55:36,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-07-25 08:55:36,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-07-25 08:55:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-07-25 08:55:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-07-25 08:55:36,445 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-07-25 08:55:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:36,445 INFO L472 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-07-25 08:55:36,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:55:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-07-25 08:55:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-25 08:55:36,445 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:36,446 INFO L354 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-07-25 08:55:36,446 INFO L415 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:36,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1032341920, now seen corresponding path program 150 times [2018-07-25 08:55:36,446 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:36,984 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:36,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:55:36,984 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:55:36,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:55:36,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:55:36,987 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 153 states. [2018-07-25 08:55:37,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:37,307 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:55:37,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:55:37,308 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 153 [2018-07-25 08:55:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:37,308 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:55:37,308 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:55:37,310 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 08:55:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:55:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:55:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:55:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:55:37,311 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-07-25 08:55:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:37,312 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:55:37,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:55:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:55:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:55:37,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:37,312 INFO L354 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-07-25 08:55:37,312 INFO L415 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1937824582, now seen corresponding path program 151 times [2018-07-25 08:55:37,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:37,877 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:37,877 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:55:37,878 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:55:37,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:55:37,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:55:37,880 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 154 states. [2018-07-25 08:55:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:38,201 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-07-25 08:55:38,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:55:38,201 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 154 [2018-07-25 08:55:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:38,202 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:55:38,202 INFO L226 Difference]: Without dead ends: 156 [2018-07-25 08:55:38,203 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 08:55:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-07-25 08:55:38,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-07-25 08:55:38,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-07-25 08:55:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-07-25 08:55:38,205 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-07-25 08:55:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:38,206 INFO L472 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-07-25 08:55:38,206 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:55:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-07-25 08:55:38,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-25 08:55:38,206 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:38,206 INFO L354 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-07-25 08:55:38,206 INFO L415 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:38,206 INFO L82 PathProgramCache]: Analyzing trace with hash -56983968, now seen corresponding path program 152 times [2018-07-25 08:55:38,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:38,903 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:38,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:55:38,904 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:55:38,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:55:38,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:55:38,907 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 155 states. [2018-07-25 08:55:39,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:39,225 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:55:39,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:55:39,226 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 155 [2018-07-25 08:55:39,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:39,226 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:55:39,226 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:55:39,227 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:55:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:55:39,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:55:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:55:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:55:39,230 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-07-25 08:55:39,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:39,230 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:55:39,230 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:55:39,231 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:55:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:55:39,231 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:39,231 INFO L354 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-07-25 08:55:39,231 INFO L415 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1766506874, now seen corresponding path program 153 times [2018-07-25 08:55:39,232 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:39,812 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:39,812 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:55:39,813 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:55:39,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:55:39,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:55:39,816 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 156 states. [2018-07-25 08:55:40,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:40,169 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-07-25 08:55:40,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:55:40,169 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 156 [2018-07-25 08:55:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:40,169 INFO L225 Difference]: With dead ends: 160 [2018-07-25 08:55:40,169 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:55:40,171 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:55:40,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:55:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-07-25 08:55:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-07-25 08:55:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-07-25 08:55:40,173 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-07-25 08:55:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:40,173 INFO L472 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-07-25 08:55:40,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:55:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-07-25 08:55:40,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-07-25 08:55:40,174 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:40,174 INFO L354 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-07-25 08:55:40,174 INFO L415 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:40,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1072857888, now seen corresponding path program 154 times [2018-07-25 08:55:40,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:40,758 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:40,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:55:40,759 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:55:40,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:55:40,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:55:40,761 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 157 states. [2018-07-25 08:55:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:41,070 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:55:41,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:55:41,070 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 157 [2018-07-25 08:55:41,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:41,070 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:55:41,070 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:55:41,072 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:55:41,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:55:41,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:55:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:55:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:55:41,074 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-07-25 08:55:41,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:41,074 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:55:41,074 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:55:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:55:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:55:41,075 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:41,075 INFO L354 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-07-25 08:55:41,075 INFO L415 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:41,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1101147706, now seen corresponding path program 155 times [2018-07-25 08:55:41,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:41,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:41,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:55:41,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:55:41,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:55:41,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:55:41,705 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 158 states. [2018-07-25 08:55:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:41,886 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-07-25 08:55:41,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:55:41,887 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 158 [2018-07-25 08:55:41,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:41,887 INFO L225 Difference]: With dead ends: 162 [2018-07-25 08:55:41,887 INFO L226 Difference]: Without dead ends: 160 [2018-07-25 08:55:41,889 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:55:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-07-25 08:55:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-07-25 08:55:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-07-25 08:55:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-07-25 08:55:41,891 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-07-25 08:55:41,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:41,891 INFO L472 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-07-25 08:55:41,891 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:55:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-07-25 08:55:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-25 08:55:41,891 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:41,892 INFO L354 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-07-25 08:55:41,892 INFO L415 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:41,892 INFO L82 PathProgramCache]: Analyzing trace with hash 224155616, now seen corresponding path program 156 times [2018-07-25 08:55:41,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:42,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:42,510 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:55:42,510 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:55:42,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:55:42,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:55:42,513 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 159 states. [2018-07-25 08:55:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:42,639 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:55:42,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:55:42,639 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 159 [2018-07-25 08:55:42,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:42,639 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:55:42,639 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:55:42,641 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:55:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:55:42,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:55:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:55:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:55:42,643 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-07-25 08:55:42,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:42,643 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:55:42,643 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:55:42,643 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:55:42,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:55:42,644 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:42,644 INFO L354 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-07-25 08:55:42,644 INFO L415 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1641114362, now seen corresponding path program 157 times [2018-07-25 08:55:42,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:43,227 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:43,227 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:55:43,228 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:55:43,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:55:43,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:55:43,231 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 160 states. [2018-07-25 08:55:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:43,481 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-07-25 08:55:43,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:55:43,481 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 160 [2018-07-25 08:55:43,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:43,481 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:55:43,481 INFO L226 Difference]: Without dead ends: 162 [2018-07-25 08:55:43,483 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 08:55:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-07-25 08:55:43,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-07-25 08:55:43,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-07-25 08:55:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-07-25 08:55:43,485 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-07-25 08:55:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:43,485 INFO L472 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-07-25 08:55:43,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:55:43,486 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-07-25 08:55:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-25 08:55:43,486 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:43,486 INFO L354 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-07-25 08:55:43,486 INFO L415 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:43,486 INFO L82 PathProgramCache]: Analyzing trace with hash 665058464, now seen corresponding path program 158 times [2018-07-25 08:55:43,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:44,095 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:44,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:55:44,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:55:44,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:55:44,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:55:44,099 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 161 states. [2018-07-25 08:55:44,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:44,523 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:55:44,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:55:44,523 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 161 [2018-07-25 08:55:44,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:44,523 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:55:44,523 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:55:44,525 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12880, Invalid=12880, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:55:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:55:44,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:55:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:55:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:55:44,527 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-07-25 08:55:44,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:44,527 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:55:44,527 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:55:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:55:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:55:44,528 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:44,528 INFO L354 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-07-25 08:55:44,528 INFO L415 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash -858027962, now seen corresponding path program 159 times [2018-07-25 08:55:44,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:45,166 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:45,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:55:45,166 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:55:45,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:55:45,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13041, Invalid=13041, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:55:45,170 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 162 states. [2018-07-25 08:55:45,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:45,566 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-07-25 08:55:45,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:55:45,566 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 162 [2018-07-25 08:55:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:45,567 INFO L225 Difference]: With dead ends: 166 [2018-07-25 08:55:45,567 INFO L226 Difference]: Without dead ends: 164 [2018-07-25 08:55:45,568 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 08:55:45,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-07-25 08:55:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-07-25 08:55:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-07-25 08:55:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-07-25 08:55:45,571 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-07-25 08:55:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:45,572 INFO L472 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-07-25 08:55:45,572 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:55:45,572 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-07-25 08:55:45,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-25 08:55:45,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:45,573 INFO L354 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-07-25 08:55:45,573 INFO L415 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:45,573 INFO L82 PathProgramCache]: Analyzing trace with hash -829066912, now seen corresponding path program 160 times [2018-07-25 08:55:45,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:46,261 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:46,261 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:55:46,262 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:55:46,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:55:46,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13203, Invalid=13203, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:55:46,264 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 163 states. [2018-07-25 08:55:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:46,602 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:55:46,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:55:46,603 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 163 [2018-07-25 08:55:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:46,603 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:55:46,603 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:55:46,604 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 08:55:46,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:55:46,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:55:46,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:55:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:55:46,607 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-07-25 08:55:46,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:46,607 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:55:46,607 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:55:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:55:46,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:55:46,608 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:46,608 INFO L354 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-07-25 08:55:46,608 INFO L415 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:46,608 INFO L82 PathProgramCache]: Analyzing trace with hash 68725638, now seen corresponding path program 161 times [2018-07-25 08:55:46,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:47,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:47,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:55:47,278 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:55:47,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:55:47,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13366, Invalid=13366, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:55:47,281 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 164 states. [2018-07-25 08:55:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:47,413 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-07-25 08:55:47,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:55:47,413 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 164 [2018-07-25 08:55:47,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:47,414 INFO L225 Difference]: With dead ends: 168 [2018-07-25 08:55:47,414 INFO L226 Difference]: Without dead ends: 166 [2018-07-25 08:55:47,417 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 08:55:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-07-25 08:55:47,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-07-25 08:55:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-07-25 08:55:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-07-25 08:55:47,420 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-07-25 08:55:47,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:47,420 INFO L472 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-07-25 08:55:47,420 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:55:47,420 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-07-25 08:55:47,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-25 08:55:47,421 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:47,421 INFO L354 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-07-25 08:55:47,421 INFO L415 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:47,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2130490912, now seen corresponding path program 162 times [2018-07-25 08:55:47,422 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:48,175 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:48,175 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:55:48,175 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:55:48,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:55:48,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13530, Invalid=13530, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:55:48,179 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 165 states. [2018-07-25 08:55:48,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:48,530 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:55:48,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:55:48,530 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 165 [2018-07-25 08:55:48,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:48,530 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:55:48,531 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:55:48,533 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 08:55:48,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:55:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:55:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:55:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:55:48,535 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-07-25 08:55:48,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:48,535 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:55:48,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:55:48,535 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:55:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:55:48,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:48,535 INFO L354 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-07-25 08:55:48,535 INFO L415 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:48,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1620704966, now seen corresponding path program 163 times [2018-07-25 08:55:48,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:49,229 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:49,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:55:49,229 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:55:49,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:55:49,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13695, Invalid=13695, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:55:49,232 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 166 states. [2018-07-25 08:55:49,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:49,706 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-07-25 08:55:49,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:55:49,706 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 166 [2018-07-25 08:55:49,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:49,707 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:55:49,707 INFO L226 Difference]: Without dead ends: 168 [2018-07-25 08:55:49,709 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 08:55:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-07-25 08:55:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-07-25 08:55:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-07-25 08:55:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-07-25 08:55:49,711 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-07-25 08:55:49,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:49,711 INFO L472 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-07-25 08:55:49,711 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:55:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-07-25 08:55:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-25 08:55:49,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:49,712 INFO L354 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-07-25 08:55:49,712 INFO L415 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:49,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1297757472, now seen corresponding path program 164 times [2018-07-25 08:55:49,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:50,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:50,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:55:50,398 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:55:50,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:55:50,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13861, Invalid=13861, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:55:50,401 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 167 states. [2018-07-25 08:55:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:50,698 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:55:50,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:55:50,698 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 167 [2018-07-25 08:55:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:50,699 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:55:50,699 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:55:50,700 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 08:55:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:55:50,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:55:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:55:50,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:55:50,702 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-07-25 08:55:50,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:50,703 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:55:50,703 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:55:50,703 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:55:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:55:50,703 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:50,703 INFO L354 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-07-25 08:55:50,703 INFO L415 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:50,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1575779834, now seen corresponding path program 165 times [2018-07-25 08:55:50,703 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:51,358 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:51,358 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:55:51,358 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:55:51,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:55:51,361 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14028, Invalid=14028, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:55:51,361 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 168 states. [2018-07-25 08:55:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:51,576 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-07-25 08:55:51,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:55:51,576 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 168 [2018-07-25 08:55:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:51,577 INFO L225 Difference]: With dead ends: 172 [2018-07-25 08:55:51,577 INFO L226 Difference]: Without dead ends: 170 [2018-07-25 08:55:51,579 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 08:55:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-07-25 08:55:51,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-07-25 08:55:51,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-07-25 08:55:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-07-25 08:55:51,581 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-07-25 08:55:51,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:51,582 INFO L472 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-07-25 08:55:51,582 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:55:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-07-25 08:55:51,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-25 08:55:51,583 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:51,583 INFO L354 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-07-25 08:55:51,583 INFO L415 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:51,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1604538464, now seen corresponding path program 166 times [2018-07-25 08:55:51,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:52,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:52,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:55:52,258 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:55:52,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:55:52,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:55:52,262 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 169 states. [2018-07-25 08:55:52,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:52,791 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:55:52,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:55:52,791 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 169 [2018-07-25 08:55:52,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:52,792 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:55:52,792 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:55:52,794 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14196, Invalid=14196, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:55:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:55:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:55:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:55:52,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:55:52,796 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-07-25 08:55:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:52,796 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:55:52,796 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:55:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:55:52,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:55:52,797 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:52,797 INFO L354 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-07-25 08:55:52,797 INFO L415 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1798911302, now seen corresponding path program 167 times [2018-07-25 08:55:52,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:53,529 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:53,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:55:53,529 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:55:53,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:55:53,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14365, Invalid=14365, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:55:53,533 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 170 states. [2018-07-25 08:55:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:53,876 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-07-25 08:55:53,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:55:53,876 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 170 [2018-07-25 08:55:53,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:53,877 INFO L225 Difference]: With dead ends: 174 [2018-07-25 08:55:53,877 INFO L226 Difference]: Without dead ends: 172 [2018-07-25 08:55:53,879 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 08:55:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-07-25 08:55:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-07-25 08:55:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-07-25 08:55:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-07-25 08:55:53,881 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-07-25 08:55:53,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:53,881 INFO L472 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-07-25 08:55:53,881 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:55:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-07-25 08:55:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-25 08:55:53,882 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:53,882 INFO L354 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-07-25 08:55:53,882 INFO L415 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:53,882 INFO L82 PathProgramCache]: Analyzing trace with hash -68328352, now seen corresponding path program 168 times [2018-07-25 08:55:53,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:54,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:54,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:55:54,595 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:55:54,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:55:54,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:55:54,598 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 171 states. [2018-07-25 08:55:54,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:54,882 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:55:54,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:55:54,882 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 171 [2018-07-25 08:55:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:54,883 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:55:54,883 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:55:54,885 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14535, Invalid=14535, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:55:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:55:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:55:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:55:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:55:54,887 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-07-25 08:55:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:54,887 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:55:54,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:55:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:55:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:55:54,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:54,888 INFO L354 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-07-25 08:55:54,888 INFO L415 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:54,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2118182778, now seen corresponding path program 169 times [2018-07-25 08:55:54,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:55,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:55,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:55:55,602 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:55:55,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:55:55,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:55:55,605 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 172 states. [2018-07-25 08:55:56,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:56,135 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-07-25 08:55:56,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:55:56,135 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 172 [2018-07-25 08:55:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:56,136 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:55:56,136 INFO L226 Difference]: Without dead ends: 174 [2018-07-25 08:55:56,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14706, Invalid=14706, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:55:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-07-25 08:55:56,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-07-25 08:55:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-07-25 08:55:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-07-25 08:55:56,141 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-07-25 08:55:56,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:56,141 INFO L472 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-07-25 08:55:56,141 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:55:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-07-25 08:55:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-25 08:55:56,142 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:56,142 INFO L354 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-07-25 08:55:56,142 INFO L415 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:56,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1239160544, now seen corresponding path program 170 times [2018-07-25 08:55:56,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:56,860 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:56,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:55:56,861 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:55:56,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:55:56,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:55:56,865 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 173 states. [2018-07-25 08:55:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:57,034 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:55:57,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:55:57,035 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 173 [2018-07-25 08:55:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:57,035 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:55:57,035 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:55:57,039 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:55:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:55:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:55:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:55:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:55:57,042 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-07-25 08:55:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:57,042 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:55:57,042 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:55:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:55:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:55:57,043 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:57,043 INFO L354 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-07-25 08:55:57,043 INFO L415 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:57,043 INFO L82 PathProgramCache]: Analyzing trace with hash 240724934, now seen corresponding path program 171 times [2018-07-25 08:55:57,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:57,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:57,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:55:57,819 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:55:57,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:55:57,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:55:57,822 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 174 states. [2018-07-25 08:55:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:58,382 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-07-25 08:55:58,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:55:58,382 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 174 [2018-07-25 08:55:58,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:58,383 INFO L225 Difference]: With dead ends: 178 [2018-07-25 08:55:58,383 INFO L226 Difference]: Without dead ends: 176 [2018-07-25 08:55:58,385 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15051, Invalid=15051, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:55:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-07-25 08:55:58,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-07-25 08:55:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-07-25 08:55:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-07-25 08:55:58,387 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-07-25 08:55:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:58,387 INFO L472 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-07-25 08:55:58,387 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:55:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-07-25 08:55:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-25 08:55:58,387 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:58,388 INFO L354 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-07-25 08:55:58,388 INFO L415 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:58,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1127465504, now seen corresponding path program 172 times [2018-07-25 08:55:58,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:55:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:55:59,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:55:59,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174] total 174 [2018-07-25 08:55:59,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-07-25 08:55:59,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-07-25 08:55:59,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:55:59,106 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 175 states. [2018-07-25 08:55:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:55:59,419 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:55:59,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:55:59,420 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 175 [2018-07-25 08:55:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:55:59,420 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:55:59,420 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:55:59,423 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15225, Invalid=15225, Unknown=0, NotChecked=0, Total=30450 [2018-07-25 08:55:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:55:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:55:59,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:55:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:55:59,425 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-07-25 08:55:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:55:59,426 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:55:59,426 INFO L473 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-07-25 08:55:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:55:59,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:55:59,427 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:55:59,427 INFO L354 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-07-25 08:55:59,427 INFO L415 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:55:59,427 INFO L82 PathProgramCache]: Analyzing trace with hash -591696122, now seen corresponding path program 173 times [2018-07-25 08:55:59,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:55:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:00,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:00,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:56:00,211 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:56:00,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:56:00,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:56:00,215 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 176 states. [2018-07-25 08:56:00,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:00,759 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-07-25 08:56:00,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:56:00,759 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 176 [2018-07-25 08:56:00,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:00,759 INFO L225 Difference]: With dead ends: 180 [2018-07-25 08:56:00,759 INFO L226 Difference]: Without dead ends: 178 [2018-07-25 08:56:00,762 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15400, Invalid=15400, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:56:00,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-07-25 08:56:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-07-25 08:56:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-07-25 08:56:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-07-25 08:56:00,764 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-07-25 08:56:00,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:00,764 INFO L472 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-07-25 08:56:00,764 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:56:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-07-25 08:56:00,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-25 08:56:00,764 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:00,765 INFO L354 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-07-25 08:56:00,765 INFO L415 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:00,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1162714464, now seen corresponding path program 174 times [2018-07-25 08:56:00,765 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:01,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:01,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176] total 176 [2018-07-25 08:56:01,550 INFO L451 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-07-25 08:56:01,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-07-25 08:56:01,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:56:01,555 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 177 states. [2018-07-25 08:56:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:01,939 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:56:01,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:56:01,939 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 177 [2018-07-25 08:56:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:01,939 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:56:01,939 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:56:01,942 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15576, Invalid=15576, Unknown=0, NotChecked=0, Total=31152 [2018-07-25 08:56:01,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:56:01,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:56:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:56:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:56:01,944 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-07-25 08:56:01,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:01,944 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:56:01,944 INFO L473 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-07-25 08:56:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:56:01,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:56:01,945 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:01,945 INFO L354 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-07-25 08:56:01,945 INFO L415 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:01,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1684413882, now seen corresponding path program 175 times [2018-07-25 08:56:01,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:02,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:02,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:56:02,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:56:02,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:56:02,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15753, Invalid=15753, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:56:02,793 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 178 states. [2018-07-25 08:56:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:03,422 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-07-25 08:56:03,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:56:03,422 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 178 [2018-07-25 08:56:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:03,423 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:56:03,423 INFO L226 Difference]: Without dead ends: 180 [2018-07-25 08:56:03,425 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 08:56:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-07-25 08:56:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-07-25 08:56:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-07-25 08:56:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-07-25 08:56:03,427 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-07-25 08:56:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:03,427 INFO L472 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-07-25 08:56:03,427 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:56:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-07-25 08:56:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-25 08:56:03,428 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:03,428 INFO L354 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-07-25 08:56:03,428 INFO L415 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:03,428 INFO L82 PathProgramCache]: Analyzing trace with hash -677226656, now seen corresponding path program 176 times [2018-07-25 08:56:03,428 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:04,247 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:04,247 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178] total 178 [2018-07-25 08:56:04,247 INFO L451 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-07-25 08:56:04,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-07-25 08:56:04,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15931, Invalid=15931, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:56:04,251 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 179 states. [2018-07-25 08:56:04,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:04,602 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:56:04,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:56:04,602 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 179 [2018-07-25 08:56:04,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:04,602 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:56:04,602 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:56:04,605 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 08:56:04,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:56:04,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:56:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:56:04,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:56:04,607 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-07-25 08:56:04,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:04,608 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:56:04,608 INFO L473 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-07-25 08:56:04,608 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:56:04,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:56:04,609 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:04,609 INFO L354 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-07-25 08:56:04,609 INFO L415 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:04,609 INFO L82 PathProgramCache]: Analyzing trace with hash 480806278, now seen corresponding path program 177 times [2018-07-25 08:56:04,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:05,431 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:05,431 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:56:05,432 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:56:05,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:56:05,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16110, Invalid=16110, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:56:05,437 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 180 states. [2018-07-25 08:56:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:06,122 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-07-25 08:56:06,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:56:06,122 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 180 [2018-07-25 08:56:06,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:06,123 INFO L225 Difference]: With dead ends: 184 [2018-07-25 08:56:06,123 INFO L226 Difference]: Without dead ends: 182 [2018-07-25 08:56:06,125 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 08:56:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-07-25 08:56:06,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-07-25 08:56:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-07-25 08:56:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-07-25 08:56:06,128 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-07-25 08:56:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:06,128 INFO L472 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-07-25 08:56:06,128 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:56:06,128 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-07-25 08:56:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-07-25 08:56:06,129 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:06,129 INFO L354 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-07-25 08:56:06,129 INFO L415 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2020088864, now seen corresponding path program 178 times [2018-07-25 08:56:06,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:06,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:06,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180] total 180 [2018-07-25 08:56:06,958 INFO L451 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-07-25 08:56:06,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-07-25 08:56:06,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16290, Invalid=16290, Unknown=0, NotChecked=0, Total=32580 [2018-07-25 08:56:06,962 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 181 states. [2018-07-25 08:56:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:07,178 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:56:07,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:56:07,178 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 181 [2018-07-25 08:56:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:07,179 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:56:07,179 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:56:07,181 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 08:56:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:56:07,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:56:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:56:07,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:56:07,183 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-07-25 08:56:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:07,183 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:56:07,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-07-25 08:56:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:56:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:56:07,184 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:07,184 INFO L354 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-07-25 08:56:07,185 INFO L415 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:07,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1801758522, now seen corresponding path program 179 times [2018-07-25 08:56:07,185 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:08,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:08,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:56:08,012 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:56:08,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:56:08,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:56:08,015 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 182 states. [2018-07-25 08:56:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:08,670 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-07-25 08:56:08,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:56:08,670 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 182 [2018-07-25 08:56:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:08,670 INFO L225 Difference]: With dead ends: 186 [2018-07-25 08:56:08,670 INFO L226 Difference]: Without dead ends: 184 [2018-07-25 08:56:08,674 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16471, Invalid=16471, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:56:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-07-25 08:56:08,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-07-25 08:56:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-07-25 08:56:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-07-25 08:56:08,676 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-07-25 08:56:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:08,676 INFO L472 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-07-25 08:56:08,676 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:56:08,676 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-07-25 08:56:08,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-25 08:56:08,677 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:08,677 INFO L354 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-07-25 08:56:08,677 INFO L415 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:08,677 INFO L82 PathProgramCache]: Analyzing trace with hash -19943200, now seen corresponding path program 180 times [2018-07-25 08:56:08,677 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:09,517 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:09,517 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182] total 182 [2018-07-25 08:56:09,517 INFO L451 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-07-25 08:56:09,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-07-25 08:56:09,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16653, Invalid=16653, Unknown=0, NotChecked=0, Total=33306 [2018-07-25 08:56:09,521 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 183 states. [2018-07-25 08:56:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:09,803 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:56:09,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:56:09,803 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 183 [2018-07-25 08:56:09,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:09,804 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:56:09,804 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:56:09,808 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 08:56:09,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:56:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:56:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:56:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:56:09,811 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-07-25 08:56:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:09,811 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:56:09,811 INFO L473 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-07-25 08:56:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:56:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:56:09,812 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:09,812 INFO L354 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-07-25 08:56:09,812 INFO L415 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:09,813 INFO L82 PathProgramCache]: Analyzing trace with hash -618243066, now seen corresponding path program 181 times [2018-07-25 08:56:09,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:10,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:10,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:56:10,748 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:56:10,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:56:10,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:56:10,752 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 184 states. [2018-07-25 08:56:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:11,253 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-07-25 08:56:11,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:56:11,253 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 184 [2018-07-25 08:56:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:11,253 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:56:11,254 INFO L226 Difference]: Without dead ends: 186 [2018-07-25 08:56:11,256 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:56:11,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-07-25 08:56:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-07-25 08:56:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-07-25 08:56:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-07-25 08:56:11,258 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-07-25 08:56:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:11,258 INFO L472 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-07-25 08:56:11,258 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:56:11,258 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-07-25 08:56:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-25 08:56:11,259 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:11,259 INFO L354 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-07-25 08:56:11,259 INFO L415 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:11,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1985669728, now seen corresponding path program 182 times [2018-07-25 08:56:11,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:12,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:12,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184] total 184 [2018-07-25 08:56:12,112 INFO L451 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-07-25 08:56:12,114 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-07-25 08:56:12,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17020, Invalid=17020, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:56:12,116 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 185 states. [2018-07-25 08:56:12,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:12,862 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:56:12,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:56:12,862 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 185 [2018-07-25 08:56:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:12,862 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:56:12,862 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:56:12,865 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 08:56:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:56:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:56:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:56:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:56:12,868 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-07-25 08:56:12,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:12,868 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:56:12,868 INFO L473 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-07-25 08:56:12,868 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:56:12,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:56:12,869 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:12,869 INFO L354 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-07-25 08:56:12,869 INFO L415 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:12,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1426223290, now seen corresponding path program 183 times [2018-07-25 08:56:12,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:13,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:13,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:56:13,908 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:56:13,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:56:13,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17205, Invalid=17205, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:56:13,913 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 186 states. [2018-07-25 08:56:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:14,182 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-07-25 08:56:14,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:56:14,182 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 186 [2018-07-25 08:56:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:14,183 INFO L225 Difference]: With dead ends: 190 [2018-07-25 08:56:14,183 INFO L226 Difference]: Without dead ends: 188 [2018-07-25 08:56:14,186 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 08:56:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-07-25 08:56:14,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-07-25 08:56:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-07-25 08:56:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-07-25 08:56:14,188 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-07-25 08:56:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:14,188 INFO L472 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-07-25 08:56:14,188 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:56:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-07-25 08:56:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-25 08:56:14,189 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:14,189 INFO L354 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-07-25 08:56:14,189 INFO L415 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:14,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1263252896, now seen corresponding path program 184 times [2018-07-25 08:56:14,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:15,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:15,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186] total 186 [2018-07-25 08:56:15,097 INFO L451 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-07-25 08:56:15,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-07-25 08:56:15,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17391, Invalid=17391, Unknown=0, NotChecked=0, Total=34782 [2018-07-25 08:56:15,101 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 187 states. [2018-07-25 08:56:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:15,652 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:56:15,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:56:15,652 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 187 [2018-07-25 08:56:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:15,653 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:56:15,653 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:56:15,655 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 08:56:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:56:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:56:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:56:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:56:15,657 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-07-25 08:56:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:15,657 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:56:15,657 INFO L473 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-07-25 08:56:15,657 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:56:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:56:15,658 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:15,658 INFO L354 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-07-25 08:56:15,658 INFO L415 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:15,658 INFO L82 PathProgramCache]: Analyzing trace with hash -506137978, now seen corresponding path program 185 times [2018-07-25 08:56:15,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:16,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:16,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:56:16,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:56:16,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:56:16,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:56:16,625 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 188 states. [2018-07-25 08:56:17,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:17,367 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-07-25 08:56:17,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:56:17,367 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 188 [2018-07-25 08:56:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:17,368 INFO L225 Difference]: With dead ends: 192 [2018-07-25 08:56:17,368 INFO L226 Difference]: Without dead ends: 190 [2018-07-25 08:56:17,370 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17578, Invalid=17578, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:56:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-07-25 08:56:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-07-25 08:56:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-07-25 08:56:17,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-07-25 08:56:17,372 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-07-25 08:56:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:17,373 INFO L472 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-07-25 08:56:17,373 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:56:17,373 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-07-25 08:56:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-25 08:56:17,373 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:17,373 INFO L354 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-07-25 08:56:17,373 INFO L415 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:17,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1489588000, now seen corresponding path program 186 times [2018-07-25 08:56:17,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:18,295 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:18,295 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188] total 188 [2018-07-25 08:56:18,295 INFO L451 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-07-25 08:56:18,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-07-25 08:56:18,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:56:18,299 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 189 states. [2018-07-25 08:56:18,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:18,661 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:56:18,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:56:18,661 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 189 [2018-07-25 08:56:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:18,661 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:56:18,661 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:56:18,664 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17766, Invalid=17766, Unknown=0, NotChecked=0, Total=35532 [2018-07-25 08:56:18,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:56:18,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:56:18,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:56:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:56:18,666 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-07-25 08:56:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:18,666 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:56:18,666 INFO L473 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-07-25 08:56:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:56:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:56:18,667 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:18,667 INFO L354 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-07-25 08:56:18,667 INFO L415 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:18,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1067416122, now seen corresponding path program 187 times [2018-07-25 08:56:18,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:19,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:19,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:56:19,621 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:56:19,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:56:19,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17955, Invalid=17955, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:56:19,626 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 190 states. [2018-07-25 08:56:19,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:19,923 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-07-25 08:56:19,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:56:19,923 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 190 [2018-07-25 08:56:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:19,923 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:56:19,923 INFO L226 Difference]: Without dead ends: 192 [2018-07-25 08:56:19,926 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 08:56:19,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-07-25 08:56:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-07-25 08:56:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-07-25 08:56:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-07-25 08:56:19,928 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-07-25 08:56:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:19,928 INFO L472 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-07-25 08:56:19,928 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:56:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-07-25 08:56:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-25 08:56:19,929 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:19,929 INFO L354 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-07-25 08:56:19,929 INFO L415 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:19,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1269834720, now seen corresponding path program 188 times [2018-07-25 08:56:19,929 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:20,896 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:20,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190] total 190 [2018-07-25 08:56:20,896 INFO L451 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-07-25 08:56:20,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-07-25 08:56:20,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18145, Invalid=18145, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:56:20,901 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 191 states. [2018-07-25 08:56:21,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:21,653 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:56:21,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:56:21,653 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 191 [2018-07-25 08:56:21,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:21,654 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:56:21,654 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:56:21,657 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 08:56:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:56:21,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:56:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:56:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:56:21,661 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-07-25 08:56:21,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:21,661 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:56:21,661 INFO L473 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-07-25 08:56:21,661 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:56:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:56:21,662 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:21,662 INFO L354 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-07-25 08:56:21,662 INFO L415 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:21,663 INFO L82 PathProgramCache]: Analyzing trace with hash 710166790, now seen corresponding path program 189 times [2018-07-25 08:56:21,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:22,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:22,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:56:22,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:56:22,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:56:22,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:56:22,771 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 192 states. [2018-07-25 08:56:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:23,868 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-07-25 08:56:23,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:56:23,868 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 192 [2018-07-25 08:56:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:23,869 INFO L225 Difference]: With dead ends: 196 [2018-07-25 08:56:23,869 INFO L226 Difference]: Without dead ends: 194 [2018-07-25 08:56:23,872 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:56:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-25 08:56:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-25 08:56:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-25 08:56:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-07-25 08:56:23,875 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-07-25 08:56:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:23,876 INFO L472 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-07-25 08:56:23,876 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:56:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-07-25 08:56:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-07-25 08:56:23,876 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:23,877 INFO L354 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-07-25 08:56:23,877 INFO L415 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:23,877 INFO L82 PathProgramCache]: Analyzing trace with hash 540330144, now seen corresponding path program 190 times [2018-07-25 08:56:23,877 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:24,922 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:24,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192] total 192 [2018-07-25 08:56:24,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-07-25 08:56:24,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-07-25 08:56:24,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2018-07-25 08:56:24,927 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 193 states. [2018-07-25 08:56:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:25,650 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:56:25,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:56:25,650 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 193 [2018-07-25 08:56:25,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:25,651 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:56:25,651 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:56:25,655 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 08:56:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:56:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:56:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:56:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:56:25,657 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-07-25 08:56:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:25,658 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:56:25,658 INFO L473 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-07-25 08:56:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:56:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:56:25,658 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:25,658 INFO L354 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-07-25 08:56:25,658 INFO L415 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:25,659 INFO L82 PathProgramCache]: Analyzing trace with hash -429638586, now seen corresponding path program 191 times [2018-07-25 08:56:25,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:26,819 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:26,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:56:26,820 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:56:26,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:56:26,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18721, Invalid=18721, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:56:26,826 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 194 states. [2018-07-25 08:56:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:27,128 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-07-25 08:56:27,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:56:27,128 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 194 [2018-07-25 08:56:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:27,128 INFO L225 Difference]: With dead ends: 198 [2018-07-25 08:56:27,128 INFO L226 Difference]: Without dead ends: 196 [2018-07-25 08:56:27,132 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 08:56:27,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-07-25 08:56:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-07-25 08:56:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-07-25 08:56:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-07-25 08:56:27,135 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-07-25 08:56:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:27,136 INFO L472 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-07-25 08:56:27,136 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:56:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-07-25 08:56:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-25 08:56:27,136 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:27,137 INFO L354 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-07-25 08:56:27,137 INFO L415 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:27,137 INFO L82 PathProgramCache]: Analyzing trace with hash -433898144, now seen corresponding path program 192 times [2018-07-25 08:56:27,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:28,212 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:28,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194] total 194 [2018-07-25 08:56:28,212 INFO L451 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-07-25 08:56:28,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-07-25 08:56:28,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:56:28,215 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 195 states. [2018-07-25 08:56:28,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:28,639 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:56:28,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:56:28,639 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 195 [2018-07-25 08:56:28,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:28,640 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:56:28,640 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:56:28,642 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18915, Invalid=18915, Unknown=0, NotChecked=0, Total=37830 [2018-07-25 08:56:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:56:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:56:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:56:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:56:28,644 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-07-25 08:56:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:28,644 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:56:28,644 INFO L473 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-07-25 08:56:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:56:28,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:56:28,645 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:28,645 INFO L354 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-07-25 08:56:28,645 INFO L415 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:28,645 INFO L82 PathProgramCache]: Analyzing trace with hash -565944442, now seen corresponding path program 193 times [2018-07-25 08:56:28,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:29,626 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:29,626 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:56:29,626 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:56:29,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:56:29,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:56:29,631 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 196 states. [2018-07-25 08:56:30,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:30,320 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-07-25 08:56:30,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:56:30,321 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 196 [2018-07-25 08:56:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:30,321 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:56:30,321 INFO L226 Difference]: Without dead ends: 198 [2018-07-25 08:56:30,325 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19110, Invalid=19110, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:56:30,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-07-25 08:56:30,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-07-25 08:56:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:56:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-07-25 08:56:30,328 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-07-25 08:56:30,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:30,328 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-07-25 08:56:30,328 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:56:30,329 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-07-25 08:56:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-25 08:56:30,329 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:30,329 INFO L354 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-07-25 08:56:30,330 INFO L415 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:30,330 INFO L82 PathProgramCache]: Analyzing trace with hash -364412384, now seen corresponding path program 194 times [2018-07-25 08:56:30,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:31,448 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:31,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196] total 196 [2018-07-25 08:56:31,448 INFO L451 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-07-25 08:56:31,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-07-25 08:56:31,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:56:31,453 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2018-07-25 08:56:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:32,348 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:56:32,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:56:32,349 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2018-07-25 08:56:32,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:32,349 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:56:32,349 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:56:32,352 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:56:32,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:56:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:56:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:56:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:56:32,354 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-07-25 08:56:32,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:32,354 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:56:32,355 INFO L473 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-07-25 08:56:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:56:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:56:32,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:32,355 INFO L354 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-07-25 08:56:32,355 INFO L415 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:32,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1588114118, now seen corresponding path program 195 times [2018-07-25 08:56:32,355 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:33,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:33,468 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:56:33,468 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:56:33,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:56:33,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19503, Invalid=19503, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:56:33,472 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 198 states. [2018-07-25 08:56:34,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:34,713 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-07-25 08:56:34,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:56:34,713 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 198 [2018-07-25 08:56:34,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:34,714 INFO L225 Difference]: With dead ends: 202 [2018-07-25 08:56:34,714 INFO L226 Difference]: Without dead ends: 200 [2018-07-25 08:56:34,716 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 08:56:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-07-25 08:56:34,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-07-25 08:56:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-07-25 08:56:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-07-25 08:56:34,718 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-07-25 08:56:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:34,718 INFO L472 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-07-25 08:56:34,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:56:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-07-25 08:56:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-25 08:56:34,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:34,719 INFO L354 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-07-25 08:56:34,719 INFO L415 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:34,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1986893536, now seen corresponding path program 196 times [2018-07-25 08:56:34,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:35,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:35,775 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198] total 198 [2018-07-25 08:56:35,775 INFO L451 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-07-25 08:56:35,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-07-25 08:56:35,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:56:35,780 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 199 states. [2018-07-25 08:56:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:36,768 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:56:36,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:56:36,768 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 199 [2018-07-25 08:56:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:36,769 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:56:36,769 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:56:36,774 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19701, Invalid=19701, Unknown=0, NotChecked=0, Total=39402 [2018-07-25 08:56:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:56:36,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:56:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:56:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:56:36,777 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-07-25 08:56:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:36,777 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:56:36,777 INFO L473 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-07-25 08:56:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:56:36,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:56:36,778 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:36,778 INFO L354 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-07-25 08:56:36,779 INFO L415 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:36,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1464153606, now seen corresponding path program 197 times [2018-07-25 08:56:36,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:37,929 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:37,929 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:56:37,930 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:56:37,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:56:37,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:56:37,935 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 200 states. [2018-07-25 08:56:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:38,856 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-07-25 08:56:38,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:56:38,857 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 200 [2018-07-25 08:56:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:38,857 INFO L225 Difference]: With dead ends: 204 [2018-07-25 08:56:38,857 INFO L226 Difference]: Without dead ends: 202 [2018-07-25 08:56:38,860 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19900, Invalid=19900, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:56:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-07-25 08:56:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-07-25 08:56:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-07-25 08:56:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-07-25 08:56:38,863 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-07-25 08:56:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:38,863 INFO L472 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-07-25 08:56:38,863 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:56:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-07-25 08:56:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-07-25 08:56:38,863 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:38,864 INFO L354 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-07-25 08:56:38,864 INFO L415 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:38,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1855882336, now seen corresponding path program 198 times [2018-07-25 08:56:38,864 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:39,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:39,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200] total 200 [2018-07-25 08:56:39,951 INFO L451 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-07-25 08:56:39,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-07-25 08:56:39,956 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:56:39,956 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 201 states. [2018-07-25 08:56:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:40,787 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:56:40,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:56:40,787 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 201 [2018-07-25 08:56:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:40,788 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:56:40,788 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:56:40,791 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2018-07-25 08:56:40,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:56:40,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:56:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:56:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:56:40,793 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-07-25 08:56:40,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:40,794 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:56:40,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-07-25 08:56:40,794 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:56:40,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:56:40,794 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:40,794 INFO L354 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-07-25 08:56:40,795 INFO L415 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:40,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1697781434, now seen corresponding path program 199 times [2018-07-25 08:56:40,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:41,928 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:41,928 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:56:41,928 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:56:41,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:56:41,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:56:41,933 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 202 states. [2018-07-25 08:56:42,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:42,731 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-07-25 08:56:42,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:56:42,731 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 202 [2018-07-25 08:56:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:42,732 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:56:42,732 INFO L226 Difference]: Without dead ends: 204 [2018-07-25 08:56:42,735 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 08:56:42,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-07-25 08:56:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-07-25 08:56:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-07-25 08:56:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-07-25 08:56:42,737 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-07-25 08:56:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:42,737 INFO L472 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-07-25 08:56:42,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:56:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-07-25 08:56:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-25 08:56:42,738 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:42,738 INFO L354 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-07-25 08:56:42,738 INFO L415 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:42,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1091620768, now seen corresponding path program 200 times [2018-07-25 08:56:42,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:43,872 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:43,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202] total 202 [2018-07-25 08:56:43,872 INFO L451 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-07-25 08:56:43,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-07-25 08:56:43,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:56:43,876 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 203 states. [2018-07-25 08:56:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:44,639 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:56:44,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:56:44,639 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 203 [2018-07-25 08:56:44,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:44,639 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:56:44,639 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:56:44,642 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 08:56:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:56:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:56:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:56:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:56:44,644 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-07-25 08:56:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:44,644 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:56:44,644 INFO L473 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-07-25 08:56:44,644 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:56:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:56:44,645 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:44,645 INFO L354 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-07-25 08:56:44,645 INFO L415 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:44,645 INFO L82 PathProgramCache]: Analyzing trace with hash 519490694, now seen corresponding path program 201 times [2018-07-25 08:56:44,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:45,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:45,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:56:45,830 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:56:45,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:56:45,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20706, Invalid=20706, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:56:45,835 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 204 states. [2018-07-25 08:56:46,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:46,692 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-07-25 08:56:46,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:56:46,692 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-07-25 08:56:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:46,693 INFO L225 Difference]: With dead ends: 208 [2018-07-25 08:56:46,693 INFO L226 Difference]: Without dead ends: 206 [2018-07-25 08:56:46,697 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 08:56:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-07-25 08:56:46,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-07-25 08:56:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-07-25 08:56:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-07-25 08:56:46,699 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-07-25 08:56:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:46,699 INFO L472 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-07-25 08:56:46,700 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:56:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-07-25 08:56:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-25 08:56:46,700 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:46,700 INFO L354 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-07-25 08:56:46,700 INFO L415 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:46,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1075661536, now seen corresponding path program 202 times [2018-07-25 08:56:46,701 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:48,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:48,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204] total 204 [2018-07-25 08:56:48,022 INFO L451 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-07-25 08:56:48,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-07-25 08:56:48,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:56:48,026 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 205 states. [2018-07-25 08:56:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:49,105 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:56:49,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:56:49,105 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 205 [2018-07-25 08:56:49,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:49,105 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:56:49,105 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:56:49,107 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20910, Invalid=20910, Unknown=0, NotChecked=0, Total=41820 [2018-07-25 08:56:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:56:49,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:56:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:56:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:56:49,110 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-07-25 08:56:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:49,110 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:56:49,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-07-25 08:56:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:56:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:56:49,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:49,111 INFO L354 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-07-25 08:56:49,111 INFO L415 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:49,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1014226886, now seen corresponding path program 203 times [2018-07-25 08:56:49,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:50,449 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:50,449 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:56:50,449 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:56:50,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:56:50,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21115, Invalid=21115, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:56:50,455 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 206 states. [2018-07-25 08:56:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:51,552 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-07-25 08:56:51,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:56:51,552 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 206 [2018-07-25 08:56:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:51,553 INFO L225 Difference]: With dead ends: 210 [2018-07-25 08:56:51,553 INFO L226 Difference]: Without dead ends: 208 [2018-07-25 08:56:51,556 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 08:56:51,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-07-25 08:56:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-07-25 08:56:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-25 08:56:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-07-25 08:56:51,559 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-07-25 08:56:51,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:51,560 INFO L472 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-07-25 08:56:51,560 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:56:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-07-25 08:56:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-25 08:56:51,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:51,561 INFO L354 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-07-25 08:56:51,561 INFO L415 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:51,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1376258528, now seen corresponding path program 204 times [2018-07-25 08:56:51,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:52,758 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:52,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206] total 206 [2018-07-25 08:56:52,758 INFO L451 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-07-25 08:56:52,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-07-25 08:56:52,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:56:52,763 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 207 states. [2018-07-25 08:56:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:53,928 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:56:53,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:56:53,928 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 207 [2018-07-25 08:56:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:53,929 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:56:53,929 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:56:53,933 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21321, Invalid=21321, Unknown=0, NotChecked=0, Total=42642 [2018-07-25 08:56:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:56:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:56:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:56:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:56:53,936 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-07-25 08:56:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:53,936 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:56:53,936 INFO L473 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-07-25 08:56:53,936 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:56:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:56:53,937 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:53,937 INFO L354 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-07-25 08:56:53,937 INFO L415 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:53,937 INFO L82 PathProgramCache]: Analyzing trace with hash -285662458, now seen corresponding path program 205 times [2018-07-25 08:56:53,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:55,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:55,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:56:55,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:56:55,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:56:55,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:56:55,244 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 208 states. [2018-07-25 08:56:56,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:56,359 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-07-25 08:56:56,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:56:56,359 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 208 [2018-07-25 08:56:56,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:56,359 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:56:56,359 INFO L226 Difference]: Without dead ends: 210 [2018-07-25 08:56:56,362 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21528, Invalid=21528, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:56:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-07-25 08:56:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-07-25 08:56:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-07-25 08:56:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-07-25 08:56:56,364 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-07-25 08:56:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:56,365 INFO L472 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-07-25 08:56:56,365 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:56:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-07-25 08:56:56,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-25 08:56:56,365 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:56,365 INFO L354 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-07-25 08:56:56,365 INFO L415 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:56,366 INFO L82 PathProgramCache]: Analyzing trace with hash -265605472, now seen corresponding path program 206 times [2018-07-25 08:56:56,366 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:57,500 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:57,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208] total 208 [2018-07-25 08:56:57,500 INFO L451 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-07-25 08:56:57,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-07-25 08:56:57,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:56:57,504 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 209 states. [2018-07-25 08:56:58,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:56:58,585 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:56:58,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:56:58,585 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 209 [2018-07-25 08:56:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:56:58,586 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:56:58,586 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:56:58,589 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21736, Invalid=21736, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:56:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:56:58,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:56:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:56:58,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:56:58,591 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-07-25 08:56:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:56:58,591 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:56:58,591 INFO L473 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-07-25 08:56:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:56:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:56:58,592 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:56:58,592 INFO L354 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-07-25 08:56:58,592 INFO L415 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:56:58,592 INFO L82 PathProgramCache]: Analyzing trace with hash 356161094, now seen corresponding path program 207 times [2018-07-25 08:56:58,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:56:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:56:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:56:59,716 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:56:59,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:56:59,716 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:56:59,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:56:59,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:56:59,721 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 210 states. [2018-07-25 08:57:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:00,503 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-07-25 08:57:00,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:57:00,503 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 210 [2018-07-25 08:57:00,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:00,504 INFO L225 Difference]: With dead ends: 214 [2018-07-25 08:57:00,504 INFO L226 Difference]: Without dead ends: 212 [2018-07-25 08:57:00,506 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21945, Invalid=21945, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:57:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-07-25 08:57:00,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-07-25 08:57:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-07-25 08:57:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-07-25 08:57:00,509 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-07-25 08:57:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:00,510 INFO L472 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-07-25 08:57:00,510 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:57:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-07-25 08:57:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-25 08:57:00,511 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:00,511 INFO L354 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-07-25 08:57:00,511 INFO L415 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:00,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1843911840, now seen corresponding path program 208 times [2018-07-25 08:57:00,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:01,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:01,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210] total 210 [2018-07-25 08:57:01,742 INFO L451 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-07-25 08:57:01,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-07-25 08:57:01,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:57:01,747 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 211 states. [2018-07-25 08:57:02,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:02,335 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:57:02,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:57:02,335 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 211 [2018-07-25 08:57:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:02,336 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:57:02,336 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:57:02,339 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22155, Invalid=22155, Unknown=0, NotChecked=0, Total=44310 [2018-07-25 08:57:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:57:02,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:57:02,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:57:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:57:02,341 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-07-25 08:57:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:02,341 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:57:02,341 INFO L473 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-07-25 08:57:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:57:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:57:02,342 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:02,342 INFO L354 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-07-25 08:57:02,342 INFO L415 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:02,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1326696058, now seen corresponding path program 209 times [2018-07-25 08:57:02,342 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:03,511 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:03,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:57:03,511 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:57:03,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:57:03,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:57:03,514 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 212 states. [2018-07-25 08:57:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:04,091 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-07-25 08:57:04,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:57:04,091 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 212 [2018-07-25 08:57:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:04,092 INFO L225 Difference]: With dead ends: 216 [2018-07-25 08:57:04,092 INFO L226 Difference]: Without dead ends: 214 [2018-07-25 08:57:04,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22366, Invalid=22366, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:57:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-07-25 08:57:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-07-25 08:57:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-07-25 08:57:04,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-07-25 08:57:04,096 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-07-25 08:57:04,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:04,096 INFO L472 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-07-25 08:57:04,096 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:57:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-07-25 08:57:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-25 08:57:04,097 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:04,097 INFO L354 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-07-25 08:57:04,097 INFO L415 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:04,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1822091296, now seen corresponding path program 210 times [2018-07-25 08:57:04,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:05,241 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:05,241 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212] total 212 [2018-07-25 08:57:05,241 INFO L451 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-07-25 08:57:05,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-07-25 08:57:05,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:57:05,246 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 213 states. [2018-07-25 08:57:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:06,188 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:57:06,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:57:06,188 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 213 [2018-07-25 08:57:06,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:06,189 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:57:06,189 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:57:06,192 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2018-07-25 08:57:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:57:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:57:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:57:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:57:06,194 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-07-25 08:57:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:06,194 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:57:06,194 INFO L473 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-07-25 08:57:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:57:06,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:57:06,195 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:06,195 INFO L354 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-07-25 08:57:06,195 INFO L415 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:06,195 INFO L82 PathProgramCache]: Analyzing trace with hash 650251462, now seen corresponding path program 211 times [2018-07-25 08:57:06,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:07,454 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:07,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 08:57:07,455 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 08:57:07,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 08:57:07,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22791, Invalid=22791, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:57:07,483 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 214 states. [2018-07-25 08:57:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:08,676 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-07-25 08:57:08,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 08:57:08,676 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 214 [2018-07-25 08:57:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:08,676 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:57:08,676 INFO L226 Difference]: Without dead ends: 216 [2018-07-25 08:57:08,678 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 08:57:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-07-25 08:57:08,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-07-25 08:57:08,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-07-25 08:57:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-07-25 08:57:08,681 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-07-25 08:57:08,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:08,681 INFO L472 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-07-25 08:57:08,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 08:57:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-07-25 08:57:08,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-07-25 08:57:08,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:08,682 INFO L354 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-07-25 08:57:08,682 INFO L415 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:08,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1317045024, now seen corresponding path program 212 times [2018-07-25 08:57:08,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:09,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:09,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214] total 214 [2018-07-25 08:57:09,863 INFO L451 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-07-25 08:57:09,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-07-25 08:57:09,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:57:09,868 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 215 states. [2018-07-25 08:57:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:10,606 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:57:10,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:57:10,606 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 215 [2018-07-25 08:57:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:10,607 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:57:10,607 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:57:10,610 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23005, Invalid=23005, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:57:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:57:10,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:57:10,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:57:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:57:10,613 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-07-25 08:57:10,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:10,613 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:57:10,613 INFO L473 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-07-25 08:57:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:57:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:57:10,614 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:10,614 INFO L354 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-07-25 08:57:10,614 INFO L415 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:10,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2121273350, now seen corresponding path program 213 times [2018-07-25 08:57:10,614 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:11,814 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:11,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 08:57:11,814 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 08:57:11,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 08:57:11,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:57:11,819 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 216 states. [2018-07-25 08:57:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:12,175 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-07-25 08:57:12,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 08:57:12,176 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 216 [2018-07-25 08:57:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:12,176 INFO L225 Difference]: With dead ends: 220 [2018-07-25 08:57:12,176 INFO L226 Difference]: Without dead ends: 218 [2018-07-25 08:57:12,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23220, Invalid=23220, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:57:12,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-07-25 08:57:12,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-07-25 08:57:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-07-25 08:57:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-07-25 08:57:12,182 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-07-25 08:57:12,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:12,182 INFO L472 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-07-25 08:57:12,182 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 08:57:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-07-25 08:57:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-25 08:57:12,183 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:12,183 INFO L354 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-07-25 08:57:12,183 INFO L415 AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:12,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1334960544, now seen corresponding path program 214 times [2018-07-25 08:57:12,183 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:13,316 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:13,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216] total 216 [2018-07-25 08:57:13,316 INFO L451 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-07-25 08:57:13,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-07-25 08:57:13,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:57:13,321 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 217 states. [2018-07-25 08:57:14,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:14,152 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:57:14,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 08:57:14,152 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 217 [2018-07-25 08:57:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:14,152 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:57:14,152 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:57:14,156 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23436, Invalid=23436, Unknown=0, NotChecked=0, Total=46872 [2018-07-25 08:57:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:57:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:57:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:57:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:57:14,158 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-07-25 08:57:14,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:14,158 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:57:14,158 INFO L473 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-07-25 08:57:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:57:14,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:57:14,159 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:14,159 INFO L354 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-07-25 08:57:14,159 INFO L415 AbstractCegarLoop]: === Iteration 216 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:14,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1565899962, now seen corresponding path program 215 times [2018-07-25 08:57:14,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:15,400 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:15,400 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217] total 217 [2018-07-25 08:57:15,401 INFO L451 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-07-25 08:57:15,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-07-25 08:57:15,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:57:15,405 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 218 states. [2018-07-25 08:57:16,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:16,778 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-07-25 08:57:16,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-07-25 08:57:16,778 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 218 [2018-07-25 08:57:16,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:16,778 INFO L225 Difference]: With dead ends: 222 [2018-07-25 08:57:16,779 INFO L226 Difference]: Without dead ends: 220 [2018-07-25 08:57:16,782 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23653, Invalid=23653, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:57:16,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-07-25 08:57:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-07-25 08:57:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-07-25 08:57:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-07-25 08:57:16,784 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-07-25 08:57:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:16,784 INFO L472 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-07-25 08:57:16,784 INFO L473 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-07-25 08:57:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-07-25 08:57:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-25 08:57:16,785 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:16,785 INFO L354 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-07-25 08:57:16,785 INFO L415 AbstractCegarLoop]: === Iteration 217 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:16,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1298262432, now seen corresponding path program 216 times [2018-07-25 08:57:16,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:18,103 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:18,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218] total 218 [2018-07-25 08:57:18,103 INFO L451 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-07-25 08:57:18,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-07-25 08:57:18,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:57:18,109 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 219 states. [2018-07-25 08:57:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:19,001 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:57:19,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 08:57:19,001 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 219 [2018-07-25 08:57:19,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:19,001 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:57:19,001 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:57:19,005 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23871, Invalid=23871, Unknown=0, NotChecked=0, Total=47742 [2018-07-25 08:57:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:57:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:57:19,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:57:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:57:19,007 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-07-25 08:57:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:19,007 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:57:19,007 INFO L473 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-07-25 08:57:19,008 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:57:19,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:57:19,008 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:19,008 INFO L354 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-07-25 08:57:19,008 INFO L415 AbstractCegarLoop]: === Iteration 218 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:19,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1591433594, now seen corresponding path program 217 times [2018-07-25 08:57:19,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:20,282 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:20,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219] total 219 [2018-07-25 08:57:20,282 INFO L451 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-07-25 08:57:20,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-07-25 08:57:20,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:57:20,287 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 220 states. [2018-07-25 08:57:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:21,138 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-07-25 08:57:21,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-07-25 08:57:21,138 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 220 [2018-07-25 08:57:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:21,139 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:57:21,139 INFO L226 Difference]: Without dead ends: 222 [2018-07-25 08:57:21,142 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24090, Invalid=24090, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 08:57:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-07-25 08:57:21,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-07-25 08:57:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-07-25 08:57:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-07-25 08:57:21,145 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-07-25 08:57:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:21,145 INFO L472 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-07-25 08:57:21,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-07-25 08:57:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-07-25 08:57:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-25 08:57:21,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:21,145 INFO L354 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-07-25 08:57:21,146 INFO L415 AbstractCegarLoop]: === Iteration 219 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:21,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2089805024, now seen corresponding path program 218 times [2018-07-25 08:57:21,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:22,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:22,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220] total 220 [2018-07-25 08:57:22,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-07-25 08:57:22,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-07-25 08:57:22,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:57:22,458 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 221 states. [2018-07-25 08:57:23,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:23,889 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:57:23,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-07-25 08:57:23,889 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 221 [2018-07-25 08:57:23,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:23,890 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:57:23,890 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:57:23,893 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24310, Invalid=24310, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:57:23,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:57:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:57:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:57:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:57:23,895 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-07-25 08:57:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:23,896 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:57:23,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-07-25 08:57:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:57:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:57:23,896 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:23,896 INFO L354 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-07-25 08:57:23,897 INFO L415 AbstractCegarLoop]: === Iteration 220 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:23,897 INFO L82 PathProgramCache]: Analyzing trace with hash -359450170, now seen corresponding path program 219 times [2018-07-25 08:57:23,897 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:25,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:25,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221] total 221 [2018-07-25 08:57:25,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-07-25 08:57:25,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-07-25 08:57:25,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:57:25,224 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 222 states. [2018-07-25 08:57:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:25,727 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-07-25 08:57:25,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-07-25 08:57:25,727 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 222 [2018-07-25 08:57:25,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:25,728 INFO L225 Difference]: With dead ends: 226 [2018-07-25 08:57:25,728 INFO L226 Difference]: Without dead ends: 224 [2018-07-25 08:57:25,732 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24531, Invalid=24531, Unknown=0, NotChecked=0, Total=49062 [2018-07-25 08:57:25,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-07-25 08:57:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-07-25 08:57:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-07-25 08:57:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-07-25 08:57:25,736 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-07-25 08:57:25,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:25,736 INFO L472 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-07-25 08:57:25,736 INFO L473 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-07-25 08:57:25,736 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-07-25 08:57:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-25 08:57:25,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:25,737 INFO L354 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-07-25 08:57:25,737 INFO L415 AbstractCegarLoop]: === Iteration 221 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:25,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1741942752, now seen corresponding path program 220 times [2018-07-25 08:57:25,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:27,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:27,252 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222] total 222 [2018-07-25 08:57:27,252 INFO L451 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-07-25 08:57:27,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-07-25 08:57:27,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:57:27,259 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 223 states. [2018-07-25 08:57:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:28,483 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:57:28,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-07-25 08:57:28,484 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 223 [2018-07-25 08:57:28,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:28,484 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:57:28,484 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:57:28,488 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24753, Invalid=24753, Unknown=0, NotChecked=0, Total=49506 [2018-07-25 08:57:28,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:57:28,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:57:28,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:57:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:57:28,491 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-07-25 08:57:28,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:28,491 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:57:28,491 INFO L473 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-07-25 08:57:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:57:28,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:57:28,491 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:28,492 INFO L354 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-07-25 08:57:28,492 INFO L415 AbstractCegarLoop]: === Iteration 222 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:28,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1834353402, now seen corresponding path program 221 times [2018-07-25 08:57:28,492 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:29,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:29,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223] total 223 [2018-07-25 08:57:29,944 INFO L451 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-07-25 08:57:29,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-07-25 08:57:29,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:57:29,950 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 224 states. [2018-07-25 08:57:31,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:31,806 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-07-25 08:57:31,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-07-25 08:57:31,806 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-07-25 08:57:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:31,807 INFO L225 Difference]: With dead ends: 228 [2018-07-25 08:57:31,807 INFO L226 Difference]: Without dead ends: 226 [2018-07-25 08:57:31,811 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24976, Invalid=24976, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:57:31,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-25 08:57:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-07-25 08:57:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-07-25 08:57:31,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-07-25 08:57:31,814 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-07-25 08:57:31,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:31,814 INFO L472 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-07-25 08:57:31,814 INFO L473 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-07-25 08:57:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-07-25 08:57:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-25 08:57:31,814 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:31,815 INFO L354 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-07-25 08:57:31,815 INFO L415 AbstractCegarLoop]: === Iteration 223 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:31,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1030384480, now seen corresponding path program 222 times [2018-07-25 08:57:31,815 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:33,277 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:33,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224] total 224 [2018-07-25 08:57:33,277 INFO L451 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-07-25 08:57:33,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-07-25 08:57:33,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:57:33,283 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 225 states. [2018-07-25 08:57:34,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:34,227 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:57:34,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-07-25 08:57:34,227 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 225 [2018-07-25 08:57:34,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:34,227 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:57:34,228 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:57:34,231 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2018-07-25 08:57:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:57:34,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:57:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:57:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:57:34,233 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-07-25 08:57:34,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:34,234 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:57:34,234 INFO L473 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-07-25 08:57:34,234 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:57:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:57:34,234 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:34,234 INFO L354 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-07-25 08:57:34,234 INFO L415 AbstractCegarLoop]: === Iteration 224 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:34,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1877151674, now seen corresponding path program 223 times [2018-07-25 08:57:34,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:35,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:35,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225] total 225 [2018-07-25 08:57:35,583 INFO L451 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-07-25 08:57:35,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-07-25 08:57:35,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:57:35,589 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 226 states. [2018-07-25 08:57:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:37,046 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-07-25 08:57:37,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-07-25 08:57:37,046 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 226 [2018-07-25 08:57:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:37,047 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:57:37,047 INFO L226 Difference]: Without dead ends: 228 [2018-07-25 08:57:37,048 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25425, Invalid=25425, Unknown=0, NotChecked=0, Total=50850 [2018-07-25 08:57:37,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-07-25 08:57:37,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-07-25 08:57:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-07-25 08:57:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-07-25 08:57:37,051 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-07-25 08:57:37,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:37,051 INFO L472 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-07-25 08:57:37,051 INFO L473 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-07-25 08:57:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-07-25 08:57:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-25 08:57:37,051 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:37,051 INFO L354 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-07-25 08:57:37,052 INFO L415 AbstractCegarLoop]: === Iteration 225 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:37,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1937836384, now seen corresponding path program 224 times [2018-07-25 08:57:37,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:38,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:38,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226] total 226 [2018-07-25 08:57:38,435 INFO L451 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-07-25 08:57:38,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-07-25 08:57:38,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:57:38,441 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 227 states. [2018-07-25 08:57:38,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:38,852 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:57:38,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-07-25 08:57:38,852 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 227 [2018-07-25 08:57:38,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:38,852 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:57:38,853 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:57:38,856 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:57:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:57:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:57:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:57:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:57:38,859 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-07-25 08:57:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:38,859 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:57:38,859 INFO L473 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-07-25 08:57:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:57:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:57:38,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:38,859 INFO L354 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-07-25 08:57:38,860 INFO L415 AbstractCegarLoop]: === Iteration 226 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:38,860 INFO L82 PathProgramCache]: Analyzing trace with hash -56618106, now seen corresponding path program 225 times [2018-07-25 08:57:38,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:40,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:40,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227] total 227 [2018-07-25 08:57:40,284 INFO L451 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-07-25 08:57:40,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-07-25 08:57:40,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:57:40,287 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 228 states. [2018-07-25 08:57:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:41,746 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-07-25 08:57:41,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-07-25 08:57:41,746 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 228 [2018-07-25 08:57:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:41,747 INFO L225 Difference]: With dead ends: 232 [2018-07-25 08:57:41,747 INFO L226 Difference]: Without dead ends: 230 [2018-07-25 08:57:41,749 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25878, Invalid=25878, Unknown=0, NotChecked=0, Total=51756 [2018-07-25 08:57:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-07-25 08:57:41,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-07-25 08:57:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-07-25 08:57:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-07-25 08:57:41,752 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-07-25 08:57:41,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:41,752 INFO L472 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-07-25 08:57:41,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-07-25 08:57:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-07-25 08:57:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-25 08:57:41,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:41,753 INFO L354 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-07-25 08:57:41,753 INFO L415 AbstractCegarLoop]: === Iteration 227 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:41,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1755165152, now seen corresponding path program 226 times [2018-07-25 08:57:41,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:43,169 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:43,169 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228] total 228 [2018-07-25 08:57:43,169 INFO L451 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-07-25 08:57:43,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-07-25 08:57:43,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:57:43,175 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 229 states. [2018-07-25 08:57:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:44,127 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:57:44,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-07-25 08:57:44,127 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 229 [2018-07-25 08:57:44,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:44,128 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:57:44,128 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:57:44,132 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26106, Invalid=26106, Unknown=0, NotChecked=0, Total=52212 [2018-07-25 08:57:44,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:57:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:57:44,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:57:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:57:44,134 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-07-25 08:57:44,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:44,134 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:57:44,134 INFO L473 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-07-25 08:57:44,134 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:57:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:57:44,135 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:44,135 INFO L354 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-07-25 08:57:44,135 INFO L415 AbstractCegarLoop]: === Iteration 228 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:44,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451270, now seen corresponding path program 227 times [2018-07-25 08:57:44,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:45,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:45,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229] total 229 [2018-07-25 08:57:45,624 INFO L451 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-07-25 08:57:45,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-07-25 08:57:45,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:57:45,628 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 230 states. [2018-07-25 08:57:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:47,205 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-07-25 08:57:47,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-07-25 08:57:47,205 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 230 [2018-07-25 08:57:47,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:47,205 INFO L225 Difference]: With dead ends: 234 [2018-07-25 08:57:47,205 INFO L226 Difference]: Without dead ends: 232 [2018-07-25 08:57:47,208 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26335, Invalid=26335, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:57:47,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-07-25 08:57:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-07-25 08:57:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-07-25 08:57:47,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-07-25 08:57:47,211 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-07-25 08:57:47,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:47,211 INFO L472 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-07-25 08:57:47,211 INFO L473 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-07-25 08:57:47,211 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-07-25 08:57:47,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-25 08:57:47,212 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:47,212 INFO L354 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-07-25 08:57:47,212 INFO L415 AbstractCegarLoop]: === Iteration 229 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:47,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1208312544, now seen corresponding path program 228 times [2018-07-25 08:57:47,212 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:48,823 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:48,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230] total 230 [2018-07-25 08:57:48,824 INFO L451 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-07-25 08:57:48,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-07-25 08:57:48,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:57:48,829 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 231 states. [2018-07-25 08:57:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:49,305 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:57:49,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-07-25 08:57:49,305 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 231 [2018-07-25 08:57:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:49,305 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:57:49,305 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:57:49,309 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26565, Invalid=26565, Unknown=0, NotChecked=0, Total=53130 [2018-07-25 08:57:49,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:57:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:57:49,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:57:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:57:49,312 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-07-25 08:57:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:49,312 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:57:49,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-07-25 08:57:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:57:49,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:57:49,313 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:49,313 INFO L354 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-07-25 08:57:49,313 INFO L415 AbstractCegarLoop]: === Iteration 230 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:49,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1197020666, now seen corresponding path program 229 times [2018-07-25 08:57:49,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:50,804 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:50,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231] total 231 [2018-07-25 08:57:50,805 INFO L451 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-07-25 08:57:50,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-07-25 08:57:50,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:57:50,809 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 232 states. [2018-07-25 08:57:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:52,461 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-07-25 08:57:52,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-07-25 08:57:52,461 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 232 [2018-07-25 08:57:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:52,461 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:57:52,461 INFO L226 Difference]: Without dead ends: 234 [2018-07-25 08:57:52,465 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26796, Invalid=26796, Unknown=0, NotChecked=0, Total=53592 [2018-07-25 08:57:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-07-25 08:57:52,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-07-25 08:57:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-07-25 08:57:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-07-25 08:57:52,467 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-07-25 08:57:52,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:52,467 INFO L472 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-07-25 08:57:52,467 INFO L473 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-07-25 08:57:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-07-25 08:57:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-25 08:57:52,468 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:52,468 INFO L354 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-07-25 08:57:52,468 INFO L415 AbstractCegarLoop]: === Iteration 231 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1547061152, now seen corresponding path program 230 times [2018-07-25 08:57:52,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:53,971 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:53,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232] total 232 [2018-07-25 08:57:53,972 INFO L451 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-07-25 08:57:53,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-07-25 08:57:53,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:57:53,977 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 233 states. [2018-07-25 08:57:55,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:55,121 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:57:55,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-07-25 08:57:55,121 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 233 [2018-07-25 08:57:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:55,122 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:57:55,122 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:57:55,126 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27028, Invalid=27028, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:57:55,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:57:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:57:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:57:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:57:55,128 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-07-25 08:57:55,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:55,128 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:57:55,128 INFO L473 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-07-25 08:57:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:57:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:57:55,129 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:55,129 INFO L354 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-07-25 08:57:55,129 INFO L415 AbstractCegarLoop]: === Iteration 232 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:55,129 INFO L82 PathProgramCache]: Analyzing trace with hash 714251590, now seen corresponding path program 231 times [2018-07-25 08:57:55,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:56,663 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:56,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233] total 233 [2018-07-25 08:57:56,664 INFO L451 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-07-25 08:57:56,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-07-25 08:57:56,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 08:57:56,669 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 234 states. [2018-07-25 08:57:57,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:57:57,430 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-07-25 08:57:57,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-07-25 08:57:57,430 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 234 [2018-07-25 08:57:57,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:57:57,431 INFO L225 Difference]: With dead ends: 238 [2018-07-25 08:57:57,431 INFO L226 Difference]: Without dead ends: 236 [2018-07-25 08:57:57,436 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27261, Invalid=27261, Unknown=0, NotChecked=0, Total=54522 [2018-07-25 08:57:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-07-25 08:57:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-07-25 08:57:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-07-25 08:57:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-07-25 08:57:57,438 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-07-25 08:57:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:57:57,439 INFO L472 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-07-25 08:57:57,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-07-25 08:57:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-07-25 08:57:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-25 08:57:57,439 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:57:57,439 INFO L354 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-07-25 08:57:57,440 INFO L415 AbstractCegarLoop]: === Iteration 233 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:57:57,440 INFO L82 PathProgramCache]: Analyzing trace with hash 666958944, now seen corresponding path program 232 times [2018-07-25 08:57:57,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:57:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:57:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:57:59,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:57:59,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234] total 234 [2018-07-25 08:57:59,106 INFO L451 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-07-25 08:57:59,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-07-25 08:57:59,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:57:59,113 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 235 states. [2018-07-25 08:58:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:01,188 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:58:01,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-07-25 08:58:01,188 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 235 [2018-07-25 08:58:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:01,189 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:58:01,189 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:58:01,193 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27495, Invalid=27495, Unknown=0, NotChecked=0, Total=54990 [2018-07-25 08:58:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:58:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:58:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:58:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:58:01,196 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-07-25 08:58:01,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:01,197 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:58:01,197 INFO L473 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-07-25 08:58:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:58:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:58:01,197 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:01,198 INFO L354 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-07-25 08:58:01,198 INFO L415 AbstractCegarLoop]: === Iteration 234 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:01,198 INFO L82 PathProgramCache]: Analyzing trace with hash -799113082, now seen corresponding path program 233 times [2018-07-25 08:58:01,198 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:02,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:02,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235] total 235 [2018-07-25 08:58:02,845 INFO L451 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-07-25 08:58:02,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-07-25 08:58:02,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:58:02,852 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 236 states. [2018-07-25 08:58:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:04,354 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-07-25 08:58:04,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-07-25 08:58:04,354 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 236 [2018-07-25 08:58:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:04,355 INFO L225 Difference]: With dead ends: 240 [2018-07-25 08:58:04,355 INFO L226 Difference]: Without dead ends: 238 [2018-07-25 08:58:04,359 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27730, Invalid=27730, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:58:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-07-25 08:58:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-07-25 08:58:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-07-25 08:58:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-07-25 08:58:04,362 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-07-25 08:58:04,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:04,363 INFO L472 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-07-25 08:58:04,363 INFO L473 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-07-25 08:58:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-07-25 08:58:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-07-25 08:58:04,363 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:04,364 INFO L354 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-07-25 08:58:04,364 INFO L415 AbstractCegarLoop]: === Iteration 235 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:04,364 INFO L82 PathProgramCache]: Analyzing trace with hash 997294368, now seen corresponding path program 234 times [2018-07-25 08:58:04,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:06,082 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:06,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236] total 236 [2018-07-25 08:58:06,082 INFO L451 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-07-25 08:58:06,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-07-25 08:58:06,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:58:06,087 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 237 states. [2018-07-25 08:58:07,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:07,383 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:58:07,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-07-25 08:58:07,383 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 237 [2018-07-25 08:58:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:07,384 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:58:07,384 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:58:07,386 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27966, Invalid=27966, Unknown=0, NotChecked=0, Total=55932 [2018-07-25 08:58:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:58:07,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:58:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:58:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:58:07,389 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-07-25 08:58:07,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:07,389 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:58:07,389 INFO L473 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-07-25 08:58:07,389 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:58:07,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:58:07,390 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:07,390 INFO L354 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-07-25 08:58:07,390 INFO L415 AbstractCegarLoop]: === Iteration 236 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:07,390 INFO L82 PathProgramCache]: Analyzing trace with hash 851350470, now seen corresponding path program 235 times [2018-07-25 08:58:07,390 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:09,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:09,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237] total 237 [2018-07-25 08:58:09,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-07-25 08:58:09,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-07-25 08:58:09,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:58:09,109 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 238 states. [2018-07-25 08:58:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:11,134 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-07-25 08:58:11,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-07-25 08:58:11,134 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 238 [2018-07-25 08:58:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:11,134 INFO L225 Difference]: With dead ends: 242 [2018-07-25 08:58:11,134 INFO L226 Difference]: Without dead ends: 240 [2018-07-25 08:58:11,139 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28203, Invalid=28203, Unknown=0, NotChecked=0, Total=56406 [2018-07-25 08:58:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-07-25 08:58:11,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-07-25 08:58:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-07-25 08:58:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-07-25 08:58:11,142 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-07-25 08:58:11,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:11,142 INFO L472 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-07-25 08:58:11,142 INFO L473 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-07-25 08:58:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-07-25 08:58:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-25 08:58:11,143 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:11,143 INFO L354 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-07-25 08:58:11,143 INFO L415 AbstractCegarLoop]: === Iteration 237 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:11,143 INFO L82 PathProgramCache]: Analyzing trace with hash 622056928, now seen corresponding path program 236 times [2018-07-25 08:58:11,144 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:12,799 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:12,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238] total 238 [2018-07-25 08:58:12,799 INFO L451 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-07-25 08:58:12,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-07-25 08:58:12,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:58:12,806 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 239 states. [2018-07-25 08:58:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:14,067 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:58:14,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-07-25 08:58:14,067 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 239 [2018-07-25 08:58:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:14,067 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:58:14,068 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:58:14,072 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28441, Invalid=28441, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:58:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:58:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:58:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:58:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 08:58:14,075 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-07-25 08:58:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:14,075 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 08:58:14,075 INFO L473 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-07-25 08:58:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 08:58:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:58:14,076 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:14,076 INFO L354 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-07-25 08:58:14,076 INFO L415 AbstractCegarLoop]: === Iteration 238 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:14,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2103891718, now seen corresponding path program 237 times [2018-07-25 08:58:14,077 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:15,690 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:15,690 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239] total 239 [2018-07-25 08:58:15,690 INFO L451 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-07-25 08:58:15,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-07-25 08:58:15,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 08:58:15,696 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 240 states. [2018-07-25 08:58:16,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:16,466 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-07-25 08:58:16,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-07-25 08:58:16,466 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 240 [2018-07-25 08:58:16,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:16,466 INFO L225 Difference]: With dead ends: 244 [2018-07-25 08:58:16,466 INFO L226 Difference]: Without dead ends: 242 [2018-07-25 08:58:16,471 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28680, Invalid=28680, Unknown=0, NotChecked=0, Total=57360 [2018-07-25 08:58:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-07-25 08:58:16,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-07-25 08:58:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 08:58:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-07-25 08:58:16,473 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-07-25 08:58:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:16,473 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-07-25 08:58:16,473 INFO L473 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-07-25 08:58:16,473 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-07-25 08:58:16,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-25 08:58:16,474 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:16,474 INFO L354 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-07-25 08:58:16,474 INFO L415 AbstractCegarLoop]: === Iteration 239 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:16,474 INFO L82 PathProgramCache]: Analyzing trace with hash 796129952, now seen corresponding path program 238 times [2018-07-25 08:58:16,474 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:18,129 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:18,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240] total 240 [2018-07-25 08:58:18,129 INFO L451 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-07-25 08:58:18,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-07-25 08:58:18,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 08:58:18,136 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 241 states. [2018-07-25 08:58:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:19,952 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:58:19,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-07-25 08:58:19,952 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 241 [2018-07-25 08:58:19,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:19,952 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:58:19,953 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:58:19,957 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28920, Invalid=28920, Unknown=0, NotChecked=0, Total=57840 [2018-07-25 08:58:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:58:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:58:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:58:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 08:58:19,960 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-07-25 08:58:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:19,960 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 08:58:19,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-07-25 08:58:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 08:58:19,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:58:19,961 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:19,961 INFO L354 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-07-25 08:58:19,961 INFO L415 AbstractCegarLoop]: === Iteration 240 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:19,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1089779130, now seen corresponding path program 239 times [2018-07-25 08:58:19,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:21,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:21,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241] total 241 [2018-07-25 08:58:21,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-07-25 08:58:21,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-07-25 08:58:21,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:58:21,636 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 242 states. [2018-07-25 08:58:23,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:23,053 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-07-25 08:58:23,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-07-25 08:58:23,053 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 242 [2018-07-25 08:58:23,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:23,054 INFO L225 Difference]: With dead ends: 246 [2018-07-25 08:58:23,054 INFO L226 Difference]: Without dead ends: 244 [2018-07-25 08:58:23,056 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29161, Invalid=29161, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:58:23,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-07-25 08:58:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-07-25 08:58:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-07-25 08:58:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-07-25 08:58:23,058 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-07-25 08:58:23,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:23,058 INFO L472 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-07-25 08:58:23,059 INFO L473 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-07-25 08:58:23,059 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-07-25 08:58:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-25 08:58:23,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:23,059 INFO L354 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-07-25 08:58:23,059 INFO L415 AbstractCegarLoop]: === Iteration 241 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:23,059 INFO L82 PathProgramCache]: Analyzing trace with hash 576581472, now seen corresponding path program 240 times [2018-07-25 08:58:23,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:24,724 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:24,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242] total 242 [2018-07-25 08:58:24,724 INFO L451 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-07-25 08:58:24,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-07-25 08:58:24,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 08:58:24,731 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 243 states. [2018-07-25 08:58:25,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:25,332 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:58:25,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-07-25 08:58:25,332 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 243 [2018-07-25 08:58:25,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:25,333 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:58:25,333 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:58:25,337 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29403, Invalid=29403, Unknown=0, NotChecked=0, Total=58806 [2018-07-25 08:58:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:58:25,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:58:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:58:25,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 08:58:25,340 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-07-25 08:58:25,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:25,340 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 08:58:25,340 INFO L473 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-07-25 08:58:25,340 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 08:58:25,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:58:25,341 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:25,341 INFO L354 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-07-25 08:58:25,341 INFO L415 AbstractCegarLoop]: === Iteration 242 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:25,341 INFO L82 PathProgramCache]: Analyzing trace with hash 694152582, now seen corresponding path program 241 times [2018-07-25 08:58:25,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:27,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:27,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243] total 243 [2018-07-25 08:58:27,036 INFO L451 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-07-25 08:58:27,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-07-25 08:58:27,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 08:58:27,041 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 244 states. [2018-07-25 08:58:28,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:28,681 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-07-25 08:58:28,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-07-25 08:58:28,681 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 244 [2018-07-25 08:58:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:28,681 INFO L225 Difference]: With dead ends: 248 [2018-07-25 08:58:28,681 INFO L226 Difference]: Without dead ends: 246 [2018-07-25 08:58:28,685 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29646, Invalid=29646, Unknown=0, NotChecked=0, Total=59292 [2018-07-25 08:58:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-07-25 08:58:28,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-07-25 08:58:28,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-25 08:58:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-07-25 08:58:28,688 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-07-25 08:58:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:28,688 INFO L472 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-07-25 08:58:28,688 INFO L473 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-07-25 08:58:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-07-25 08:58:28,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-07-25 08:58:28,689 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:28,689 INFO L354 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-07-25 08:58:28,689 INFO L415 AbstractCegarLoop]: === Iteration 243 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:28,689 INFO L82 PathProgramCache]: Analyzing trace with hash 43889696, now seen corresponding path program 242 times [2018-07-25 08:58:28,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:30,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:30,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244] total 244 [2018-07-25 08:58:30,413 INFO L451 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-07-25 08:58:30,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-07-25 08:58:30,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:58:30,420 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 245 states. [2018-07-25 08:58:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:31,838 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:58:31,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-07-25 08:58:31,838 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 245 [2018-07-25 08:58:31,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:31,838 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:58:31,839 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:58:31,843 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29890, Invalid=29890, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:58:31,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:58:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:58:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:58:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 08:58:31,846 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-07-25 08:58:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:31,846 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 08:58:31,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-07-25 08:58:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 08:58:31,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:58:31,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:31,847 INFO L354 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-07-25 08:58:31,847 INFO L415 AbstractCegarLoop]: === Iteration 244 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:31,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1360576710, now seen corresponding path program 243 times [2018-07-25 08:58:31,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:33,419 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:33,419 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245] total 245 [2018-07-25 08:58:33,419 INFO L451 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-07-25 08:58:33,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-07-25 08:58:33,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-25 08:58:33,426 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 246 states. [2018-07-25 08:58:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:35,360 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-07-25 08:58:35,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-07-25 08:58:35,361 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 246 [2018-07-25 08:58:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:35,361 INFO L225 Difference]: With dead ends: 250 [2018-07-25 08:58:35,361 INFO L226 Difference]: Without dead ends: 248 [2018-07-25 08:58:35,365 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30135, Invalid=30135, Unknown=0, NotChecked=0, Total=60270 [2018-07-25 08:58:35,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-07-25 08:58:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-07-25 08:58:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-07-25 08:58:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-07-25 08:58:35,368 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-07-25 08:58:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:35,368 INFO L472 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-07-25 08:58:35,368 INFO L473 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-07-25 08:58:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-07-25 08:58:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-25 08:58:35,369 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:35,369 INFO L354 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-07-25 08:58:35,369 INFO L415 AbstractCegarLoop]: === Iteration 245 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:35,369 INFO L82 PathProgramCache]: Analyzing trace with hash -771798816, now seen corresponding path program 244 times [2018-07-25 08:58:35,369 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:37,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:37,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246] total 246 [2018-07-25 08:58:37,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-07-25 08:58:37,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-07-25 08:58:37,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 08:58:37,136 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 247 states. [2018-07-25 08:58:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:38,888 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:58:38,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-07-25 08:58:38,888 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 247 [2018-07-25 08:58:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:38,888 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:58:38,888 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:58:38,891 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30381, Invalid=30381, Unknown=0, NotChecked=0, Total=60762 [2018-07-25 08:58:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:58:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:58:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:58:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 08:58:38,894 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-07-25 08:58:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:38,894 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 08:58:38,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-07-25 08:58:38,894 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 08:58:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:58:38,894 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:38,895 INFO L354 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-07-25 08:58:38,895 INFO L415 AbstractCegarLoop]: === Iteration 246 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:38,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1844036614, now seen corresponding path program 245 times [2018-07-25 08:58:38,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:40,844 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:40,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247] total 247 [2018-07-25 08:58:40,845 INFO L451 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-07-25 08:58:40,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-07-25 08:58:40,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 08:58:40,853 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 248 states. [2018-07-25 08:58:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:42,053 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-07-25 08:58:42,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-07-25 08:58:42,053 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 248 [2018-07-25 08:58:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:42,054 INFO L225 Difference]: With dead ends: 252 [2018-07-25 08:58:42,054 INFO L226 Difference]: Without dead ends: 250 [2018-07-25 08:58:42,058 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=30628, Invalid=30628, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 08:58:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-25 08:58:42,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-07-25 08:58:42,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-07-25 08:58:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-07-25 08:58:42,061 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-07-25 08:58:42,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:42,061 INFO L472 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-07-25 08:58:42,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-07-25 08:58:42,061 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-07-25 08:58:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-25 08:58:42,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:42,062 INFO L354 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-07-25 08:58:42,062 INFO L415 AbstractCegarLoop]: === Iteration 247 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:42,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1330556320, now seen corresponding path program 246 times [2018-07-25 08:58:42,062 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:43,788 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:43,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:43,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248] total 248 [2018-07-25 08:58:43,789 INFO L451 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-07-25 08:58:43,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-07-25 08:58:43,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-25 08:58:43,795 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 249 states. [2018-07-25 08:58:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:45,348 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 08:58:45,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-07-25 08:58:45,348 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 249 [2018-07-25 08:58:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:45,348 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:58:45,348 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:58:45,353 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30876, Invalid=30876, Unknown=0, NotChecked=0, Total=61752 [2018-07-25 08:58:45,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:58:45,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 08:58:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:58:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 08:58:45,356 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 249 [2018-07-25 08:58:45,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:45,356 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 08:58:45,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-07-25 08:58:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 08:58:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:58:45,357 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:45,357 INFO L354 BasicCegarLoop]: trace histogram [247, 1, 1, 1] [2018-07-25 08:58:45,357 INFO L415 AbstractCegarLoop]: === Iteration 248 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1702430906, now seen corresponding path program 247 times [2018-07-25 08:58:45,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:47,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:47,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [249] total 249 [2018-07-25 08:58:47,131 INFO L451 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-07-25 08:58:47,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-07-25 08:58:47,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31125, Invalid=31125, Unknown=0, NotChecked=0, Total=62250 [2018-07-25 08:58:47,135 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 250 states. [2018-07-25 08:58:47,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:47,746 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-07-25 08:58:47,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2018-07-25 08:58:47,746 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 250 [2018-07-25 08:58:47,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:47,747 INFO L225 Difference]: With dead ends: 254 [2018-07-25 08:58:47,747 INFO L226 Difference]: Without dead ends: 252 [2018-07-25 08:58:47,749 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31125, Invalid=31125, Unknown=0, NotChecked=0, Total=62250 [2018-07-25 08:58:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-07-25 08:58:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-07-25 08:58:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-07-25 08:58:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-07-25 08:58:47,752 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 250 [2018-07-25 08:58:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:47,752 INFO L472 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-07-25 08:58:47,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-07-25 08:58:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-07-25 08:58:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-25 08:58:47,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:47,753 INFO L354 BasicCegarLoop]: trace histogram [248, 1, 1, 1] [2018-07-25 08:58:47,753 INFO L415 AbstractCegarLoop]: === Iteration 249 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:47,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1235754400, now seen corresponding path program 248 times [2018-07-25 08:58:47,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:49,580 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:49,580 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [250] total 250 [2018-07-25 08:58:49,581 INFO L451 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-07-25 08:58:49,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-07-25 08:58:49,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31375, Invalid=31375, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 08:58:49,588 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 251 states. [2018-07-25 08:58:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:51,218 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 08:58:51,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-07-25 08:58:51,219 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 251 [2018-07-25 08:58:51,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:51,219 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:58:51,219 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:58:51,224 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31375, Invalid=31375, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 08:58:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:58:51,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:58:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:58:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 08:58:51,226 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 251 [2018-07-25 08:58:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:51,226 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 08:58:51,226 INFO L473 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-07-25 08:58:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 08:58:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:58:51,227 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:51,227 INFO L354 BasicCegarLoop]: trace histogram [249, 1, 1, 1] [2018-07-25 08:58:51,227 INFO L415 AbstractCegarLoop]: === Iteration 250 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:51,227 INFO L82 PathProgramCache]: Analyzing trace with hash 346315398, now seen corresponding path program 249 times [2018-07-25 08:58:51,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:53,109 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:53,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251] total 251 [2018-07-25 08:58:53,110 INFO L451 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-07-25 08:58:53,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-07-25 08:58:53,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31626, Invalid=31626, Unknown=0, NotChecked=0, Total=63252 [2018-07-25 08:58:53,117 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 252 states. [2018-07-25 08:58:53,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:53,726 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-07-25 08:58:53,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-07-25 08:58:53,726 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 252 [2018-07-25 08:58:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:53,727 INFO L225 Difference]: With dead ends: 256 [2018-07-25 08:58:53,727 INFO L226 Difference]: Without dead ends: 254 [2018-07-25 08:58:53,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31626, Invalid=31626, Unknown=0, NotChecked=0, Total=63252 [2018-07-25 08:58:53,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-07-25 08:58:53,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-07-25 08:58:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-07-25 08:58:53,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-07-25 08:58:53,734 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 252 [2018-07-25 08:58:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:53,734 INFO L472 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-07-25 08:58:53,734 INFO L473 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-07-25 08:58:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-07-25 08:58:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-25 08:58:53,735 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:53,735 INFO L354 BasicCegarLoop]: trace histogram [250, 1, 1, 1] [2018-07-25 08:58:53,735 INFO L415 AbstractCegarLoop]: === Iteration 251 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:53,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2145838880, now seen corresponding path program 250 times [2018-07-25 08:58:53,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:55,612 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:55,612 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [252] total 252 [2018-07-25 08:58:55,612 INFO L451 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-07-25 08:58:55,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-07-25 08:58:55,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31878, Invalid=31878, Unknown=0, NotChecked=0, Total=63756 [2018-07-25 08:58:55,616 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 253 states. [2018-07-25 08:58:57,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:58:57,324 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 08:58:57,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-07-25 08:58:57,324 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 253 [2018-07-25 08:58:57,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:58:57,325 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:58:57,325 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:58:57,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31878, Invalid=31878, Unknown=0, NotChecked=0, Total=63756 [2018-07-25 08:58:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:58:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 08:58:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:58:57,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 08:58:57,330 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 253 [2018-07-25 08:58:57,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:58:57,330 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 08:58:57,330 INFO L473 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-07-25 08:58:57,330 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 08:58:57,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:58:57,331 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:58:57,331 INFO L354 BasicCegarLoop]: trace histogram [251, 1, 1, 1] [2018-07-25 08:58:57,331 INFO L415 AbstractCegarLoop]: === Iteration 252 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:58:57,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2096491974, now seen corresponding path program 251 times [2018-07-25 08:58:57,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:58:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:58:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:58:59,217 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:58:59,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [253] total 253 [2018-07-25 08:58:59,217 INFO L451 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-07-25 08:58:59,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-07-25 08:58:59,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32131, Invalid=32131, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 08:58:59,224 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 254 states. [2018-07-25 08:59:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:00,013 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-07-25 08:59:00,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2018-07-25 08:59:00,013 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 254 [2018-07-25 08:59:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:00,014 INFO L225 Difference]: With dead ends: 258 [2018-07-25 08:59:00,014 INFO L226 Difference]: Without dead ends: 256 [2018-07-25 08:59:00,019 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=32131, Invalid=32131, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 08:59:00,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-07-25 08:59:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-07-25 08:59:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-07-25 08:59:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-07-25 08:59:00,022 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 254 [2018-07-25 08:59:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:00,023 INFO L472 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-07-25 08:59:00,023 INFO L473 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-07-25 08:59:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-07-25 08:59:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-25 08:59:00,023 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:00,023 INFO L354 BasicCegarLoop]: trace histogram [252, 1, 1, 1] [2018-07-25 08:59:00,024 INFO L415 AbstractCegarLoop]: === Iteration 253 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:00,024 INFO L82 PathProgramCache]: Analyzing trace with hash 566737888, now seen corresponding path program 252 times [2018-07-25 08:59:00,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 31878 backedges. 0 proven. 31878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:01,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:01,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [254] total 254 [2018-07-25 08:59:01,898 INFO L451 AbstractCegarLoop]: Interpolant automaton has 255 states [2018-07-25 08:59:01,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2018-07-25 08:59:01,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32385, Invalid=32385, Unknown=0, NotChecked=0, Total=64770 [2018-07-25 08:59:01,905 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 255 states. [2018-07-25 08:59:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:04,149 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 08:59:04,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2018-07-25 08:59:04,149 INFO L78 Accepts]: Start accepts. Automaton has 255 states. Word has length 255 [2018-07-25 08:59:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:04,150 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:59:04,150 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:59:04,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=32385, Invalid=32385, Unknown=0, NotChecked=0, Total=64770 [2018-07-25 08:59:04,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:59:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:59:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:59:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-25 08:59:04,157 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 255 [2018-07-25 08:59:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:04,157 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-25 08:59:04,157 INFO L473 AbstractCegarLoop]: Interpolant automaton has 255 states. [2018-07-25 08:59:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-25 08:59:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:59:04,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:04,158 INFO L354 BasicCegarLoop]: trace histogram [253, 1, 1, 1] [2018-07-25 08:59:04,158 INFO L415 AbstractCegarLoop]: === Iteration 254 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:04,158 INFO L82 PathProgramCache]: Analyzing trace with hash 389001478, now seen corresponding path program 253 times [2018-07-25 08:59:04,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:06,029 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:06,029 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [255] total 255 [2018-07-25 08:59:06,029 INFO L451 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-07-25 08:59:06,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-07-25 08:59:06,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32640, Invalid=32640, Unknown=0, NotChecked=0, Total=65280 [2018-07-25 08:59:06,034 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 256 states. [2018-07-25 08:59:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:59:06,654 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2018-07-25 08:59:06,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2018-07-25 08:59:06,654 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 256 [2018-07-25 08:59:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:59:06,655 INFO L225 Difference]: With dead ends: 260 [2018-07-25 08:59:06,655 INFO L226 Difference]: Without dead ends: 258 [2018-07-25 08:59:06,658 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=32640, Invalid=32640, Unknown=0, NotChecked=0, Total=65280 [2018-07-25 08:59:06,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-07-25 08:59:06,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-07-25 08:59:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-07-25 08:59:06,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-07-25 08:59:06,660 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 256 [2018-07-25 08:59:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:59:06,661 INFO L472 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-07-25 08:59:06,661 INFO L473 AbstractCegarLoop]: Interpolant automaton has 256 states. [2018-07-25 08:59:06,661 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-07-25 08:59:06,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-25 08:59:06,661 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:59:06,661 INFO L354 BasicCegarLoop]: trace histogram [254, 1, 1, 1] [2018-07-25 08:59:06,662 INFO L415 AbstractCegarLoop]: === Iteration 255 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:59:06,662 INFO L82 PathProgramCache]: Analyzing trace with hash -825859936, now seen corresponding path program 254 times [2018-07-25 08:59:06,662 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:59:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:59:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 32385 backedges. 0 proven. 32385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:59:08,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:59:08,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [256] total 256 [2018-07-25 08:59:08,610 INFO L451 AbstractCegarLoop]: Interpolant automaton has 257 states [2018-07-25 08:59:08,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2018-07-25 08:59:08,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2018-07-25 08:59:08,618 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 257 states. Received shutdown request... [2018-07-25 08:59:08,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:59:08,997 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:59:09,005 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:59:09,005 INFO L202 PluginConnector]: Adding new model Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:59:09 BoogieIcfgContainer [2018-07-25 08:59:09,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:59:09,006 INFO L168 Benchmark]: Toolchain (without parser) took 264803.67 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 901.5 MB in the end (delta: 558.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-25 08:59:09,007 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:59:09,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:59:09,008 INFO L168 Benchmark]: Boogie Preprocessor took 23.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:59:09,008 INFO L168 Benchmark]: RCFGBuilder took 193.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:59:09,008 INFO L168 Benchmark]: TraceAbstraction took 264538.21 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 901.5 MB in the end (delta: 548.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-25 08:59:09,010 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 193.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 264538.21 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 901.5 MB in the end (delta: 548.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 26]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 26). Cancelled while BasicCegarLoop was constructing difference of abstraction (258states) and interpolant automaton (currently 191 states, 257 states before enhancement), while ReachableStatesComputation was computing reachable states (189 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 264.4s OverallTime, 255 OverallIterations, 254 TraceHistogramMax, 99.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 765 SDtfs, 2 SDslu, 16728 SDs, 0 SdLazy, 49555 SolverSat, 482 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32895 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 32640 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 119.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=254, 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: 0.7s AutomataMinimizationTime, 254 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 30.1s SatisfiabilityAnalysisTime, 128.4s InterpolantComputationTime, 33150 NumberOfCodeBlocks, 33150 NumberOfCodeBlocksAsserted, 255 NumberOfCheckSat, 32895 ConstructedInterpolants, 0 QuantifiedInterpolants, 16809855 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 255 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2763520 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/Octopussy.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-59-09-018.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Octopussy.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-59-09-018.csv Completed graceful shutdown