java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/seq.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:49:55,236 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:49:55,239 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:49:55,257 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:49:55,258 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:49:55,259 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:49:55,263 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:49:55,266 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:49:55,268 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:49:55,269 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:49:55,270 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:49:55,270 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:49:55,271 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:49:55,272 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:49:55,274 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:49:55,274 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:49:55,275 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:49:55,277 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:49:55,280 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:49:55,282 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:49:55,283 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:49:55,284 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:49:55,287 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:49:55,288 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:49:55,288 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:49:55,289 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:49:55,290 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:49:55,291 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:49:55,292 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:49:55,293 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:49:55,294 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:49:55,294 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:49:55,297 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:49:55,312 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:49:55,312 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:49:55,314 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:49:55,314 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:49:55,314 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:49:55,314 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:49:55,314 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:49:55,315 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:49:55,377 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:49:55,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:49:55,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:49:55,406 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:49:55,406 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:49:55,407 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/seq.i_4.bpl [2018-07-25 08:49:55,408 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/seq.i_4.bpl' [2018-07-25 08:49:55,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:49:55,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:49:55,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:49:55,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:49:55,492 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:49:55,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/1) ... [2018-07-25 08:49:55,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/1) ... [2018-07-25 08:49:55,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:49:55,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:49:55,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:49:55,537 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:49:55,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/1) ... [2018-07-25 08:49:55,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/1) ... [2018-07-25 08:49:55,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/1) ... [2018-07-25 08:49:55,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/1) ... [2018-07-25 08:49:55,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/1) ... [2018-07-25 08:49:55,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/1) ... [2018-07-25 08:49:55,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/1) ... [2018-07-25 08:49:55,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:49:55,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:49:55,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:49:55,565 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:49:55,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/1) ... [2018-07-25 08:49:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:49:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:49:55,806 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:49:55,807 INFO L202 PluginConnector]: Adding new model seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:49:55 BoogieIcfgContainer [2018-07-25 08:49:55,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:49:55,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:49:55,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:49:55,812 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:49:55,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:55" (1/2) ... [2018-07-25 08:49:55,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ec45f6 and model type seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:49:55, skipping insertion in model container [2018-07-25 08:49:55,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:49:55" (2/2) ... [2018-07-25 08:49:55,817 INFO L112 eAbstractionObserver]: Analyzing ICFG seq.i_4.bpl [2018-07-25 08:49:55,828 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:49:55,836 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:49:55,886 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:49:55,887 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:49:55,887 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:49:55,887 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:49:55,887 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:49:55,887 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:49:55,888 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:49:55,888 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:49:55,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:49:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 08:49:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:49:55,911 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:55,912 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 08:49:55,913 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:55,919 INFO L82 PathProgramCache]: Analyzing trace with hash 889539531, now seen corresponding path program 1 times [2018-07-25 08:49:55,926 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:56,016 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 08:49:56,019 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:49:56,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:49:56,024 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:49:56,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:49:56,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:56,042 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-07-25 08:49:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:56,109 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2018-07-25 08:49:56,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:49:56,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:49:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:56,123 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:49:56,124 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:49:56,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:49:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:49:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:49:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:49:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 08:49:56,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 08:49:56,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:56,172 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 08:49:56,172 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:49:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 08:49:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:49:56,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:56,175 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:49:56,175 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:56,176 INFO L82 PathProgramCache]: Analyzing trace with hash 198621957, now seen corresponding path program 1 times [2018-07-25 08:49:56,176 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:56,229 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:49:56,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:49:56,237 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:49:56,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:49:56,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:49:56,239 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2018-07-25 08:49:56,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:56,328 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-07-25 08:49:56,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:49:56,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:49:56,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:56,330 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:49:56,330 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:49:56,331 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:49:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:49:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2018-07-25 08:49:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:49:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 08:49:56,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 08:49:56,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:56,337 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 08:49:56,337 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:49:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 08:49:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:49:56,338 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:56,338 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:49:56,338 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:56,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1897191999, now seen corresponding path program 1 times [2018-07-25 08:49:56,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:56,400 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:56,401 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:49:56,401 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:49:56,401 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:49:56,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:49:56,402 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-25 08:49:56,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:56,478 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-07-25 08:49:56,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:49:56,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:49:56,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:56,481 INFO L225 Difference]: With dead ends: 20 [2018-07-25 08:49:56,482 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:49:56,486 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:49:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:49:56,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:49:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:49:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 08:49:56,494 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-25 08:49:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:56,495 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 08:49:56,495 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:49:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 08:49:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:49:56,496 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:56,496 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-07-25 08:49:56,497 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1765270407, now seen corresponding path program 2 times [2018-07-25 08:49:56,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:56,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:56,587 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:49:56,587 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:49:56,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:49:56,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:49:56,591 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-07-25 08:49:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:56,684 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-07-25 08:49:56,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:49:56,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:49:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:56,686 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:49:56,686 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:49:56,687 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:49:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:49:56,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-07-25 08:49:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:49:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 08:49:56,693 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-25 08:49:56,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:56,694 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 08:49:56,694 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:49:56,694 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 08:49:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:49:56,695 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:56,695 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-07-25 08:49:56,695 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash 87273139, now seen corresponding path program 3 times [2018-07-25 08:49:56,696 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:56,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:56,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:49:56,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:49:56,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:49:56,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:49:56,739 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-07-25 08:49:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:56,839 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-07-25 08:49:56,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:49:56,840 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:49:56,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:56,841 INFO L225 Difference]: With dead ends: 26 [2018-07-25 08:49:56,841 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:49:56,842 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:49:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:49:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:49:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:49:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-25 08:49:56,851 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-07-25 08:49:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:56,852 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-25 08:49:56,854 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:49:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-25 08:49:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:49:56,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:56,855 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2018-07-25 08:49:56,856 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:56,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1096334355, now seen corresponding path program 4 times [2018-07-25 08:49:56,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:56,920 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:56,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:49:56,921 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:49:56,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:49:56,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:49:56,922 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-07-25 08:49:56,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:56,988 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-07-25 08:49:56,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:49:56,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:49:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:56,989 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:49:56,989 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:49:56,990 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:49:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:49:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-07-25 08:49:56,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:49:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 08:49:56,997 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-07-25 08:49:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:56,997 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 08:49:56,997 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:49:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 08:49:56,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:49:57,000 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:57,000 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-07-25 08:49:57,000 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:57,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1310275289, now seen corresponding path program 5 times [2018-07-25 08:49:57,001 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:57,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:57,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:49:57,057 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:49:57,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:49:57,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:49:57,058 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2018-07-25 08:49:57,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:57,152 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-07-25 08:49:57,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:49:57,153 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:49:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:57,154 INFO L225 Difference]: With dead ends: 32 [2018-07-25 08:49:57,154 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:49:57,155 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:49:57,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:49:57,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:49:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:49:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 08:49:57,161 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-25 08:49:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:57,161 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 08:49:57,161 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:49:57,162 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 08:49:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:49:57,162 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:57,163 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1] [2018-07-25 08:49:57,163 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:57,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1330040479, now seen corresponding path program 6 times [2018-07-25 08:49:57,164 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:57,232 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:57,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:49:57,233 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:49:57,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:49:57,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:49:57,235 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2018-07-25 08:49:57,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:57,314 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-07-25 08:49:57,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:49:57,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-07-25 08:49:57,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:57,315 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:49:57,315 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:49:57,317 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:49:57,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:49:57,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-07-25 08:49:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:49:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-25 08:49:57,332 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-07-25 08:49:57,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:57,334 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-25 08:49:57,334 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:49:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-25 08:49:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:49:57,336 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:57,336 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-07-25 08:49:57,337 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:57,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1731406235, now seen corresponding path program 7 times [2018-07-25 08:49:57,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:57,394 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:57,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:49:57,395 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:49:57,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:49:57,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:49:57,396 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-07-25 08:49:57,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:57,465 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-07-25 08:49:57,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:49:57,471 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:49:57,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:57,472 INFO L225 Difference]: With dead ends: 38 [2018-07-25 08:49:57,472 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:49:57,474 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:49:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:49:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:49:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:49:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 08:49:57,485 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2018-07-25 08:49:57,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:57,486 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 08:49:57,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:49:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 08:49:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:49:57,489 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:57,490 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1] [2018-07-25 08:49:57,490 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1774380245, now seen corresponding path program 8 times [2018-07-25 08:49:57,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:57,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:57,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:49:57,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:49:57,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:49:57,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:49:57,560 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2018-07-25 08:49:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:57,610 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-07-25 08:49:57,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:49:57,611 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-07-25 08:49:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:57,612 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:49:57,612 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:49:57,613 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:49:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:49:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-07-25 08:49:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:49:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 08:49:57,620 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-25 08:49:57,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:57,621 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 08:49:57,621 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:49:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 08:49:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:49:57,622 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:57,622 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-07-25 08:49:57,623 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:57,623 INFO L82 PathProgramCache]: Analyzing trace with hash 77451279, now seen corresponding path program 9 times [2018-07-25 08:49:57,623 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:57,682 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:57,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:49:57,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:49:57,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:49:57,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:49:57,684 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2018-07-25 08:49:57,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:57,761 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-07-25 08:49:57,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:49:57,761 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:49:57,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:57,762 INFO L225 Difference]: With dead ends: 44 [2018-07-25 08:49:57,762 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:49:57,763 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:49:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:49:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:49:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:49:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-25 08:49:57,772 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-07-25 08:49:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:57,773 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-25 08:49:57,773 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:49:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-25 08:49:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:49:57,774 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:57,774 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1] [2018-07-25 08:49:57,775 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:57,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1980325449, now seen corresponding path program 10 times [2018-07-25 08:49:57,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:57,844 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:57,844 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:49:57,844 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:49:57,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:49:57,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:49:57,845 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2018-07-25 08:49:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:57,923 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-07-25 08:49:57,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:49:57,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-07-25 08:49:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:57,926 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:49:57,926 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:49:57,928 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:49:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:49:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-07-25 08:49:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:49:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 08:49:57,941 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2018-07-25 08:49:57,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:57,942 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 08:49:57,942 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:49:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 08:49:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:49:57,943 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:57,946 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-07-25 08:49:57,946 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:57,946 INFO L82 PathProgramCache]: Analyzing trace with hash 422296707, now seen corresponding path program 11 times [2018-07-25 08:49:57,947 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:58,020 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:58,021 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:49:58,021 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:49:58,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:49:58,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:49:58,023 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 16 states. [2018-07-25 08:49:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:58,125 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-07-25 08:49:58,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:49:58,125 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:49:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:58,130 INFO L225 Difference]: With dead ends: 50 [2018-07-25 08:49:58,130 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:49:58,131 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:49:58,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:49:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:49:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:49:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 08:49:58,141 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-07-25 08:49:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:58,142 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 08:49:58,142 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:49:58,143 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 08:49:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:49:58,146 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:58,146 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1] [2018-07-25 08:49:58,146 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:58,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1320051267, now seen corresponding path program 12 times [2018-07-25 08:49:58,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:58,219 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:58,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:49:58,220 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:49:58,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:49:58,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:49:58,225 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 12 states. [2018-07-25 08:49:58,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:58,290 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-07-25 08:49:58,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:49:58,291 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-07-25 08:49:58,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:58,292 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:49:58,292 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:49:58,292 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:49:58,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:49:58,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-07-25 08:49:58,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:49:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-25 08:49:58,305 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-07-25 08:49:58,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:58,305 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-25 08:49:58,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:49:58,306 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-25 08:49:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:49:58,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:58,308 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-07-25 08:49:58,308 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:58,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1553862921, now seen corresponding path program 13 times [2018-07-25 08:49:58,309 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:58,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:58,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:49:58,394 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:49:58,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:49:58,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:49:58,395 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 18 states. [2018-07-25 08:49:58,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:58,506 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-07-25 08:49:58,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:49:58,507 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:49:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:58,507 INFO L225 Difference]: With dead ends: 56 [2018-07-25 08:49:58,508 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:49:58,508 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:49:58,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:49:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:49:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:49:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 08:49:58,517 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-07-25 08:49:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:58,518 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 08:49:58,518 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:49:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 08:49:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:49:58,519 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:58,519 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1] [2018-07-25 08:49:58,519 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:58,519 INFO L82 PathProgramCache]: Analyzing trace with hash 115385137, now seen corresponding path program 14 times [2018-07-25 08:49:58,520 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:58,583 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:58,583 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:49:58,584 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:49:58,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:49:58,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:49:58,588 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-07-25 08:49:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:58,657 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-07-25 08:49:58,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:49:58,657 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-07-25 08:49:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:58,658 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:49:58,658 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:49:58,659 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:49:58,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:49:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-07-25 08:49:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:49:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 08:49:58,669 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-07-25 08:49:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:58,669 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 08:49:58,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:49:58,669 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 08:49:58,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:49:58,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:58,670 INFO L354 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-07-25 08:49:58,671 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:58,671 INFO L82 PathProgramCache]: Analyzing trace with hash -783980693, now seen corresponding path program 15 times [2018-07-25 08:49:58,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:58,761 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:58,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:49:58,762 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:49:58,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:49:58,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:49:58,763 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 20 states. [2018-07-25 08:49:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:58,887 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-07-25 08:49:58,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:49:58,888 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:49:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:58,888 INFO L225 Difference]: With dead ends: 62 [2018-07-25 08:49:58,889 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:49:58,890 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:49:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:49:58,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:49:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:49:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-25 08:49:58,902 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2018-07-25 08:49:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:58,902 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-25 08:49:58,902 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:49:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-25 08:49:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:49:58,904 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:58,904 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1] [2018-07-25 08:49:58,904 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:58,905 INFO L82 PathProgramCache]: Analyzing trace with hash 830172837, now seen corresponding path program 16 times [2018-07-25 08:49:58,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:58,974 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:58,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:49:58,974 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:49:58,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:49:58,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:49:58,975 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 14 states. [2018-07-25 08:49:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:59,050 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-07-25 08:49:59,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:49:59,051 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2018-07-25 08:49:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:59,051 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:49:59,052 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:49:59,052 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:49:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:49:59,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-07-25 08:49:59,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:49:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 08:49:59,062 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-07-25 08:49:59,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:59,063 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 08:49:59,063 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:49:59,063 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 08:49:59,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:49:59,064 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:59,064 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-07-25 08:49:59,064 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:59,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1067768353, now seen corresponding path program 17 times [2018-07-25 08:49:59,065 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:59,166 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:59,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:49:59,167 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:49:59,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:49:59,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:49:59,168 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 22 states. [2018-07-25 08:49:59,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:59,299 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-07-25 08:49:59,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:49:59,299 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:49:59,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:59,300 INFO L225 Difference]: With dead ends: 68 [2018-07-25 08:49:59,300 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:49:59,301 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=261, Invalid=731, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:49:59,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:49:59,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:49:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:49:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 08:49:59,311 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-25 08:49:59,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:59,312 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 08:49:59,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:49:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 08:49:59,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:49:59,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:59,313 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1] [2018-07-25 08:49:59,313 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:59,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2070347801, now seen corresponding path program 18 times [2018-07-25 08:49:59,313 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:59,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:59,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:49:59,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:49:59,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:49:59,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:49:59,380 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 15 states. [2018-07-25 08:49:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:59,453 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-07-25 08:49:59,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:49:59,454 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2018-07-25 08:49:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:59,454 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:49:59,455 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:49:59,455 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:49:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:49:59,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-07-25 08:49:59,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:49:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-25 08:49:59,466 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2018-07-25 08:49:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:59,466 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-25 08:49:59,466 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:49:59,466 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-25 08:49:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:49:59,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:59,467 INFO L354 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-07-25 08:49:59,468 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:59,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1034431059, now seen corresponding path program 19 times [2018-07-25 08:49:59,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:59,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:59,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:49:59,580 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:49:59,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:49:59,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:49:59,581 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-07-25 08:49:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:59,705 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2018-07-25 08:49:59,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:49:59,705 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:49:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:59,706 INFO L225 Difference]: With dead ends: 74 [2018-07-25 08:49:59,706 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:49:59,708 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:49:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:49:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:49:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:49:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 08:49:59,719 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2018-07-25 08:49:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:59,719 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 08:49:59,719 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:49:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 08:49:59,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:49:59,720 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:59,720 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1] [2018-07-25 08:49:59,721 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:59,721 INFO L82 PathProgramCache]: Analyzing trace with hash 2120767373, now seen corresponding path program 20 times [2018-07-25 08:49:59,721 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:59,799 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:59,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:49:59,799 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:49:59,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:49:59,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:49:59,800 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 16 states. [2018-07-25 08:49:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:59,892 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-07-25 08:49:59,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:49:59,892 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2018-07-25 08:49:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:59,893 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:49:59,893 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:49:59,898 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:49:59,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:49:59,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2018-07-25 08:49:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:49:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 08:49:59,918 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-25 08:49:59,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:59,922 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 08:49:59,923 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:49:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 08:49:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:49:59,923 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:59,924 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-07-25 08:49:59,924 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:59,924 INFO L82 PathProgramCache]: Analyzing trace with hash -2051967801, now seen corresponding path program 21 times [2018-07-25 08:49:59,924 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:00,146 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:00,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:50:00,147 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:50:00,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:50:00,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:50:00,148 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 26 states. [2018-07-25 08:50:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:00,312 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-07-25 08:50:00,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:50:00,313 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:50:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:00,313 INFO L225 Difference]: With dead ends: 80 [2018-07-25 08:50:00,313 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:50:00,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:50:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:50:00,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:50:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:50:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-25 08:50:00,327 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-07-25 08:50:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:00,327 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-25 08:50:00,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:50:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-25 08:50:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:50:00,328 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:00,328 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1] [2018-07-25 08:50:00,328 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:00,329 INFO L82 PathProgramCache]: Analyzing trace with hash -473664255, now seen corresponding path program 22 times [2018-07-25 08:50:00,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:00,421 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:00,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:50:00,421 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:50:00,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:50:00,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:50:00,422 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 17 states. [2018-07-25 08:50:00,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:00,503 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-07-25 08:50:00,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:50:00,503 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2018-07-25 08:50:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:00,504 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:50:00,504 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:50:00,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=331, Invalid=539, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:50:00,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:50:00,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-07-25 08:50:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:50:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 08:50:00,517 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2018-07-25 08:50:00,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:00,517 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 08:50:00,517 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:50:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 08:50:00,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:50:00,518 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:00,518 INFO L354 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-07-25 08:50:00,519 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:00,519 INFO L82 PathProgramCache]: Analyzing trace with hash 75236667, now seen corresponding path program 23 times [2018-07-25 08:50:00,519 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:00,652 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:00,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:50:00,652 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:50:00,652 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:50:00,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:50:00,653 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 28 states. [2018-07-25 08:50:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:00,842 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2018-07-25 08:50:00,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:50:00,842 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:50:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:00,843 INFO L225 Difference]: With dead ends: 86 [2018-07-25 08:50:00,843 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:50:00,844 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=417, Invalid=1223, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:50:00,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:50:00,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:50:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:50:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 08:50:00,857 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-07-25 08:50:00,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:00,857 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 08:50:00,857 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:50:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 08:50:00,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:50:00,858 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:00,858 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1] [2018-07-25 08:50:00,858 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:00,859 INFO L82 PathProgramCache]: Analyzing trace with hash 608196725, now seen corresponding path program 24 times [2018-07-25 08:50:00,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:00,932 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:00,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:50:00,932 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:50:00,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:50:00,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:50:00,933 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 18 states. [2018-07-25 08:50:01,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:01,021 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-07-25 08:50:01,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:50:01,021 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2018-07-25 08:50:01,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:01,022 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:50:01,022 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:50:01,023 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:50:01,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:50:01,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-07-25 08:50:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:50:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-25 08:50:01,037 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-07-25 08:50:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:01,037 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-25 08:50:01,037 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:50:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-25 08:50:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:50:01,038 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:01,038 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-07-25 08:50:01,039 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:01,039 INFO L82 PathProgramCache]: Analyzing trace with hash 361552815, now seen corresponding path program 25 times [2018-07-25 08:50:01,039 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 182 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:01,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:01,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:50:01,180 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:50:01,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:50:01,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:50:01,181 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 30 states. [2018-07-25 08:50:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:01,375 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2018-07-25 08:50:01,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:50:01,376 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:50:01,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:01,376 INFO L225 Difference]: With dead ends: 92 [2018-07-25 08:50:01,377 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:50:01,378 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=477, Invalid=1415, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:50:01,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:50:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:50:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:50:01,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 08:50:01,390 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-07-25 08:50:01,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:01,391 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 08:50:01,391 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:50:01,391 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 08:50:01,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:50:01,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:01,392 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 1, 1, 1, 1] [2018-07-25 08:50:01,392 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:01,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1210122729, now seen corresponding path program 26 times [2018-07-25 08:50:01,392 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 210 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:01,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:01,468 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:50:01,468 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:50:01,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:50:01,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:50:01,469 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 19 states. [2018-07-25 08:50:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:01,561 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-07-25 08:50:01,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:50:01,561 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2018-07-25 08:50:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:01,562 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:50:01,562 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:50:01,563 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:50:01,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:50:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-07-25 08:50:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:50:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 08:50:01,578 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-07-25 08:50:01,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:01,578 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 08:50:01,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:50:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 08:50:01,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:50:01,579 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:01,579 INFO L354 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-07-25 08:50:01,580 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:01,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1008142301, now seen corresponding path program 27 times [2018-07-25 08:50:01,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:01,731 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:01,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:50:01,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:50:01,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:50:01,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:50:01,733 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 32 states. [2018-07-25 08:50:01,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:01,962 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2018-07-25 08:50:01,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:50:01,962 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:50:01,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:01,963 INFO L225 Difference]: With dead ends: 98 [2018-07-25 08:50:01,963 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:50:01,967 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=541, Invalid=1621, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:50:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:50:01,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:50:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:50:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-25 08:50:01,983 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2018-07-25 08:50:01,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:01,983 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-25 08:50:01,983 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:50:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-25 08:50:01,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:50:01,984 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:01,984 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 1, 1, 1, 1] [2018-07-25 08:50:01,985 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:01,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1490325155, now seen corresponding path program 28 times [2018-07-25 08:50:01,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 240 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:02,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:02,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:50:02,074 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:50:02,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:50:02,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:50:02,075 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 20 states. [2018-07-25 08:50:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:02,178 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-07-25 08:50:02,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:50:02,178 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2018-07-25 08:50:02,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:02,179 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:50:02,179 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:50:02,180 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:50:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:50:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-07-25 08:50:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:50:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 08:50:02,196 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-07-25 08:50:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:02,197 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 08:50:02,197 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:50:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 08:50:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:50:02,198 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:02,198 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-07-25 08:50:02,198 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:02,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1978312041, now seen corresponding path program 29 times [2018-07-25 08:50:02,199 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:02,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:02,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:50:02,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:50:02,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:50:02,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:50:02,376 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 34 states. [2018-07-25 08:50:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:02,635 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-07-25 08:50:02,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:50:02,635 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:50:02,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:02,636 INFO L225 Difference]: With dead ends: 104 [2018-07-25 08:50:02,636 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:50:02,638 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=609, Invalid=1841, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:50:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:50:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:50:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:50:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 08:50:02,654 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-25 08:50:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:02,654 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 08:50:02,655 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:50:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 08:50:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:50:02,655 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:02,655 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 1, 1, 1, 1] [2018-07-25 08:50:02,656 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:02,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1465604399, now seen corresponding path program 30 times [2018-07-25 08:50:02,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 272 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:02,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:02,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:50:02,772 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:50:02,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:50:02,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:50:02,773 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 21 states. [2018-07-25 08:50:02,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:02,886 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2018-07-25 08:50:02,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:50:02,887 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2018-07-25 08:50:02,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:02,888 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:50:02,888 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:50:02,889 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:50:02,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:50:02,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2018-07-25 08:50:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:50:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-25 08:50:02,908 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2018-07-25 08:50:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:02,908 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-25 08:50:02,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:50:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-25 08:50:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:50:02,909 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:02,910 INFO L354 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-07-25 08:50:02,910 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:02,910 INFO L82 PathProgramCache]: Analyzing trace with hash 303497995, now seen corresponding path program 31 times [2018-07-25 08:50:02,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:03,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:03,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:50:03,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:50:03,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:50:03,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:50:03,106 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 36 states. [2018-07-25 08:50:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:03,408 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2018-07-25 08:50:03,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:50:03,408 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:50:03,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:03,409 INFO L225 Difference]: With dead ends: 110 [2018-07-25 08:50:03,409 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:50:03,412 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=681, Invalid=2075, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:50:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:50:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:50:03,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:50:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 08:50:03,430 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2018-07-25 08:50:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:03,430 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 08:50:03,430 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:50:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 08:50:03,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:50:03,431 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:03,435 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 1, 1, 1, 1] [2018-07-25 08:50:03,435 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:03,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2091802043, now seen corresponding path program 32 times [2018-07-25 08:50:03,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 306 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:03,532 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:03,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:50:03,533 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:50:03,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:50:03,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:50:03,534 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 22 states. [2018-07-25 08:50:03,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:03,639 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-07-25 08:50:03,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:50:03,640 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 72 [2018-07-25 08:50:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:03,640 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:50:03,640 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:50:03,642 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:50:03,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:50:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-07-25 08:50:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:50:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 08:50:03,660 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-25 08:50:03,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:03,661 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 08:50:03,661 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:50:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 08:50:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:50:03,661 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:03,662 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-07-25 08:50:03,662 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash -177016449, now seen corresponding path program 33 times [2018-07-25 08:50:03,662 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 306 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:03,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:03,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:50:03,845 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:50:03,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:50:03,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:50:03,847 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 38 states. [2018-07-25 08:50:04,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:04,104 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2018-07-25 08:50:04,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:50:04,105 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:50:04,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:04,105 INFO L225 Difference]: With dead ends: 116 [2018-07-25 08:50:04,105 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:50:04,107 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=757, Invalid=2323, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:50:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:50:04,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:50:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:50:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-25 08:50:04,126 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-07-25 08:50:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:04,126 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-25 08:50:04,127 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:50:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-25 08:50:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:50:04,127 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:04,128 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1] [2018-07-25 08:50:04,128 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:04,128 INFO L82 PathProgramCache]: Analyzing trace with hash -42507335, now seen corresponding path program 34 times [2018-07-25 08:50:04,128 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 342 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:04,225 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:04,225 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:50:04,225 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:50:04,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:50:04,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:50:04,226 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 23 states. [2018-07-25 08:50:04,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:04,338 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2018-07-25 08:50:04,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:50:04,339 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2018-07-25 08:50:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:04,340 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:50:04,340 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:50:04,341 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:50:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:50:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-07-25 08:50:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:50:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 08:50:04,362 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2018-07-25 08:50:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:04,362 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 08:50:04,362 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:50:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 08:50:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:50:04,363 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:04,363 INFO L354 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-07-25 08:50:04,363 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:04,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2100176371, now seen corresponding path program 35 times [2018-07-25 08:50:04,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 342 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:04,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:04,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:50:04,560 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:50:04,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:50:04,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:50:04,561 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 40 states. [2018-07-25 08:50:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:04,871 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-07-25 08:50:04,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:50:04,871 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:50:04,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:04,872 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:50:04,872 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:50:04,875 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=837, Invalid=2585, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:50:04,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:50:04,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:50:04,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:50:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 08:50:04,899 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-07-25 08:50:04,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:04,900 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 08:50:04,900 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:50:04,900 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 08:50:04,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:50:04,901 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:04,901 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1] [2018-07-25 08:50:04,902 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:04,902 INFO L82 PathProgramCache]: Analyzing trace with hash 752544557, now seen corresponding path program 36 times [2018-07-25 08:50:04,902 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 380 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:05,012 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:05,012 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:50:05,012 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:50:05,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:50:05,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:50:05,013 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 24 states. [2018-07-25 08:50:05,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:05,142 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-07-25 08:50:05,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:50:05,142 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2018-07-25 08:50:05,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:05,143 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:50:05,143 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:50:05,145 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:50:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:50:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2018-07-25 08:50:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:50:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-25 08:50:05,168 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-07-25 08:50:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:05,168 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-25 08:50:05,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:50:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-25 08:50:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:50:05,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:05,169 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-07-25 08:50:05,169 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:05,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1640865895, now seen corresponding path program 37 times [2018-07-25 08:50:05,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 380 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:05,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:05,376 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:50:05,376 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:50:05,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:50:05,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:50:05,378 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 42 states. [2018-07-25 08:50:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:05,705 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2018-07-25 08:50:05,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:50:05,705 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:50:05,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:05,706 INFO L225 Difference]: With dead ends: 128 [2018-07-25 08:50:05,706 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:50:05,708 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=921, Invalid=2861, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:50:05,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:50:05,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:50:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:50:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 08:50:05,729 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-07-25 08:50:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:05,730 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 08:50:05,730 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:50:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 08:50:05,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:50:05,731 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:05,731 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1] [2018-07-25 08:50:05,731 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:05,731 INFO L82 PathProgramCache]: Analyzing trace with hash 918632609, now seen corresponding path program 38 times [2018-07-25 08:50:05,731 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:05,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:05,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:50:05,838 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:50:05,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:50:05,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:50:05,839 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 25 states. [2018-07-25 08:50:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:05,974 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-07-25 08:50:05,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:50:05,974 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 84 [2018-07-25 08:50:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:05,975 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:50:05,975 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:50:05,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:50:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:50:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-07-25 08:50:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:50:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 08:50:06,003 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-07-25 08:50:06,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:06,004 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 08:50:06,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:50:06,004 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 08:50:06,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:50:06,005 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:06,005 INFO L354 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-07-25 08:50:06,005 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:06,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1957273381, now seen corresponding path program 39 times [2018-07-25 08:50:06,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 420 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:06,255 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:06,255 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:50:06,255 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:50:06,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:50:06,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:50:06,257 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 44 states. [2018-07-25 08:50:06,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:06,556 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2018-07-25 08:50:06,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:50:06,556 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:50:06,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:06,559 INFO L225 Difference]: With dead ends: 134 [2018-07-25 08:50:06,559 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:50:06,560 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1009, Invalid=3151, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:50:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:50:06,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:50:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:50:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-25 08:50:06,584 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2018-07-25 08:50:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:06,585 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-25 08:50:06,585 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:50:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-25 08:50:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:50:06,586 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:06,586 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 1, 1, 1, 1] [2018-07-25 08:50:06,586 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:06,586 INFO L82 PathProgramCache]: Analyzing trace with hash 267340821, now seen corresponding path program 40 times [2018-07-25 08:50:06,586 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 462 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:06,693 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:06,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:50:06,693 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:50:06,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:50:06,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:50:06,694 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 26 states. [2018-07-25 08:50:06,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:06,813 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-07-25 08:50:06,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:50:06,814 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 88 [2018-07-25 08:50:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:06,814 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:50:06,815 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:50:06,815 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:50:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:50:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2018-07-25 08:50:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:50:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 08:50:06,839 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-07-25 08:50:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:06,840 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 08:50:06,840 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:50:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 08:50:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:50:06,841 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:06,841 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-07-25 08:50:06,841 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:06,841 INFO L82 PathProgramCache]: Analyzing trace with hash -783456433, now seen corresponding path program 41 times [2018-07-25 08:50:06,841 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 462 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:07,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:07,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:50:07,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:50:07,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:50:07,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:50:07,043 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 46 states. [2018-07-25 08:50:07,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:07,368 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2018-07-25 08:50:07,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:50:07,369 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:50:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:07,370 INFO L225 Difference]: With dead ends: 140 [2018-07-25 08:50:07,370 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:50:07,371 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1101, Invalid=3455, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:50:07,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:50:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:50:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:50:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 08:50:07,397 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-25 08:50:07,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:07,397 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 08:50:07,397 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:50:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 08:50:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:50:07,398 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:07,398 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 1, 1, 1, 1] [2018-07-25 08:50:07,399 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:07,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1017783689, now seen corresponding path program 42 times [2018-07-25 08:50:07,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 506 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:07,505 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:07,505 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:50:07,506 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:50:07,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:50:07,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:50:07,507 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 27 states. [2018-07-25 08:50:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:07,639 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-07-25 08:50:07,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:50:07,640 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 92 [2018-07-25 08:50:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:07,641 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:50:07,641 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:50:07,642 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:50:07,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:50:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-07-25 08:50:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:50:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-25 08:50:07,668 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2018-07-25 08:50:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:07,669 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-25 08:50:07,669 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:50:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-25 08:50:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:50:07,670 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:07,670 INFO L354 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-07-25 08:50:07,670 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:07,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1162366013, now seen corresponding path program 43 times [2018-07-25 08:50:07,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 506 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:07,880 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:07,880 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:50:07,880 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:50:07,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:50:07,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:50:07,882 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 48 states. [2018-07-25 08:50:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:08,228 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2018-07-25 08:50:08,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:50:08,228 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:50:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:08,229 INFO L225 Difference]: With dead ends: 146 [2018-07-25 08:50:08,229 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:50:08,231 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1197, Invalid=3773, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:50:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:50:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:50:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:50:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 08:50:08,256 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2018-07-25 08:50:08,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:08,257 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 08:50:08,257 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:50:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 08:50:08,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:50:08,258 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:08,258 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 1, 1, 1, 1] [2018-07-25 08:50:08,258 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:08,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1867070211, now seen corresponding path program 44 times [2018-07-25 08:50:08,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 552 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:08,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:08,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:50:08,370 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:50:08,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:50:08,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:50:08,371 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 28 states. [2018-07-25 08:50:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:08,504 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-07-25 08:50:08,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:50:08,505 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 96 [2018-07-25 08:50:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:08,506 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:50:08,506 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:50:08,507 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:50:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:50:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-07-25 08:50:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:50:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 08:50:08,533 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-25 08:50:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:08,533 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 08:50:08,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:50:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 08:50:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:50:08,534 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:08,534 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-07-25 08:50:08,534 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:08,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1041909303, now seen corresponding path program 45 times [2018-07-25 08:50:08,535 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 552 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:08,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:08,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:50:08,742 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:50:08,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:50:08,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:50:08,743 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 50 states. [2018-07-25 08:50:09,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:09,097 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2018-07-25 08:50:09,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:50:09,097 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:50:09,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:09,098 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:50:09,098 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:50:09,100 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1297, Invalid=4105, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:50:09,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:50:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:50:09,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:50:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-25 08:50:09,131 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-07-25 08:50:09,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:09,132 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-25 08:50:09,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:50:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-25 08:50:09,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:50:09,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:09,133 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 1, 1, 1, 1] [2018-07-25 08:50:09,133 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:09,134 INFO L82 PathProgramCache]: Analyzing trace with hash -279303567, now seen corresponding path program 46 times [2018-07-25 08:50:09,134 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 600 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:09,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:09,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:50:09,249 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:50:09,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:50:09,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:50:09,250 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 29 states. [2018-07-25 08:50:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:09,414 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-07-25 08:50:09,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:50:09,414 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2018-07-25 08:50:09,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:09,415 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:50:09,415 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:50:09,417 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1781, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:50:09,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:50:09,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2018-07-25 08:50:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:50:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 08:50:09,453 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2018-07-25 08:50:09,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:09,454 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 08:50:09,454 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:50:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 08:50:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:50:09,455 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:09,455 INFO L354 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-07-25 08:50:09,456 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:09,456 INFO L82 PathProgramCache]: Analyzing trace with hash -2122703189, now seen corresponding path program 47 times [2018-07-25 08:50:09,456 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 600 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:09,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:09,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:50:09,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:50:09,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:50:09,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:50:09,739 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 52 states. [2018-07-25 08:50:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:10,112 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2018-07-25 08:50:10,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:50:10,113 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:50:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:10,113 INFO L225 Difference]: With dead ends: 158 [2018-07-25 08:50:10,114 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:50:10,115 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1401, Invalid=4451, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:50:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:50:10,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:50:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:50:10,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 08:50:10,144 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-07-25 08:50:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:10,145 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 08:50:10,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:50:10,145 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 08:50:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:50:10,146 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:10,146 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 1, 1, 1, 1] [2018-07-25 08:50:10,147 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash 190404069, now seen corresponding path program 48 times [2018-07-25 08:50:10,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 650 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:10,252 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:10,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:50:10,253 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:50:10,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:50:10,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:50:10,254 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 30 states. [2018-07-25 08:50:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:10,388 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2018-07-25 08:50:10,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:50:10,388 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 104 [2018-07-25 08:50:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:10,389 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:50:10,389 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:50:10,390 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:50:10,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:50:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2018-07-25 08:50:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:50:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-25 08:50:10,421 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-07-25 08:50:10,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:10,421 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-25 08:50:10,421 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:50:10,421 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-25 08:50:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:50:10,422 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:10,422 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-07-25 08:50:10,423 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:10,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1705231073, now seen corresponding path program 49 times [2018-07-25 08:50:10,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:10,658 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:10,658 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:50:10,659 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:50:10,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:50:10,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:50:10,660 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 54 states. [2018-07-25 08:50:11,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:11,007 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2018-07-25 08:50:11,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:50:11,007 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:50:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:11,008 INFO L225 Difference]: With dead ends: 164 [2018-07-25 08:50:11,008 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:50:11,009 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1509, Invalid=4811, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:50:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:50:11,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:50:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:50:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 08:50:11,041 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-07-25 08:50:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:11,041 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 08:50:11,041 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:50:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 08:50:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:50:11,042 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:11,042 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 1, 1, 1, 1] [2018-07-25 08:50:11,043 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:11,043 INFO L82 PathProgramCache]: Analyzing trace with hash 653870937, now seen corresponding path program 50 times [2018-07-25 08:50:11,043 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 702 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:11,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:11,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:50:11,154 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:50:11,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:50:11,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:50:11,155 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 31 states. [2018-07-25 08:50:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:11,290 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-07-25 08:50:11,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:50:11,290 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2018-07-25 08:50:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:11,291 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:50:11,291 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:50:11,292 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:50:11,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:50:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2018-07-25 08:50:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:50:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 08:50:11,322 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-07-25 08:50:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:11,322 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 08:50:11,322 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:50:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 08:50:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:50:11,323 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:11,324 INFO L354 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-07-25 08:50:11,324 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:11,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1304797587, now seen corresponding path program 51 times [2018-07-25 08:50:11,324 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 702 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:11,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:11,554 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:50:11,554 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:50:11,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:50:11,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:50:11,555 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 56 states. [2018-07-25 08:50:11,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:11,956 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2018-07-25 08:50:11,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:50:11,956 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:50:11,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:11,957 INFO L225 Difference]: With dead ends: 170 [2018-07-25 08:50:11,957 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:50:11,958 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1621, Invalid=5185, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:50:11,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:50:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:50:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:50:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-25 08:50:11,988 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2018-07-25 08:50:11,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:11,988 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-25 08:50:11,988 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:50:11,988 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-25 08:50:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:50:11,989 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:11,989 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 1, 1, 1, 1] [2018-07-25 08:50:11,990 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:11,990 INFO L82 PathProgramCache]: Analyzing trace with hash -738263347, now seen corresponding path program 52 times [2018-07-25 08:50:11,990 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 756 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:12,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:12,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:50:12,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:50:12,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:50:12,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:50:12,103 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 32 states. [2018-07-25 08:50:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:12,252 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-07-25 08:50:12,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:50:12,252 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 112 [2018-07-25 08:50:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:12,254 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:50:12,254 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:50:12,254 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1336, Invalid=2204, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:50:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:50:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-07-25 08:50:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:50:12,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 08:50:12,291 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-07-25 08:50:12,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:12,291 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 08:50:12,291 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:50:12,292 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 08:50:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:50:12,293 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:12,293 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-07-25 08:50:12,293 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:12,293 INFO L82 PathProgramCache]: Analyzing trace with hash -801420281, now seen corresponding path program 53 times [2018-07-25 08:50:12,294 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 756 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:12,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:12,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:50:12,549 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:50:12,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:50:12,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:50:12,551 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 58 states. [2018-07-25 08:50:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:12,957 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2018-07-25 08:50:12,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:50:12,957 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:50:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:12,958 INFO L225 Difference]: With dead ends: 176 [2018-07-25 08:50:12,958 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:50:12,959 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1737, Invalid=5573, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:50:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:50:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:50:12,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:50:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 08:50:12,996 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-25 08:50:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:12,996 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 08:50:12,996 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:50:12,996 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 08:50:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:50:12,997 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:12,997 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 1, 1, 1, 1] [2018-07-25 08:50:12,998 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:12,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1280345023, now seen corresponding path program 54 times [2018-07-25 08:50:12,998 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 812 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:13,109 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:13,109 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:50:13,109 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:50:13,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:50:13,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:50:13,110 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 33 states. [2018-07-25 08:50:13,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:13,259 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-07-25 08:50:13,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:50:13,259 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 116 [2018-07-25 08:50:13,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:13,261 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:50:13,261 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:50:13,262 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:50:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:50:13,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-07-25 08:50:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:50:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-25 08:50:13,296 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2018-07-25 08:50:13,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:13,297 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-25 08:50:13,297 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:50:13,297 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-25 08:50:13,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:50:13,298 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:13,298 INFO L354 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-07-25 08:50:13,298 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:13,299 INFO L82 PathProgramCache]: Analyzing trace with hash -2050868101, now seen corresponding path program 55 times [2018-07-25 08:50:13,299 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 812 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:13,555 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:13,555 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:50:13,556 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:50:13,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:50:13,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:50:13,557 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 60 states. [2018-07-25 08:50:13,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:13,958 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-07-25 08:50:13,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:50:13,958 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:50:13,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:13,959 INFO L225 Difference]: With dead ends: 182 [2018-07-25 08:50:13,960 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:50:13,961 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1857, Invalid=5975, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:50:13,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:50:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:50:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:50:14,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 08:50:14,000 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118 [2018-07-25 08:50:14,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:14,001 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 08:50:14,001 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:50:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 08:50:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:50:14,002 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:14,002 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 1, 1, 1, 1] [2018-07-25 08:50:14,003 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:14,003 INFO L82 PathProgramCache]: Analyzing trace with hash 919584693, now seen corresponding path program 56 times [2018-07-25 08:50:14,003 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 870 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:14,139 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:14,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:50:14,139 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:50:14,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:50:14,140 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:50:14,140 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 34 states. [2018-07-25 08:50:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:14,304 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-07-25 08:50:14,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:50:14,304 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 120 [2018-07-25 08:50:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:14,306 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:50:14,306 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:50:14,307 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:50:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:50:14,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2018-07-25 08:50:14,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:50:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 08:50:14,344 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-25 08:50:14,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:14,344 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 08:50:14,344 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:50:14,344 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 08:50:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:50:14,345 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:14,345 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-07-25 08:50:14,346 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1042320657, now seen corresponding path program 57 times [2018-07-25 08:50:14,346 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 870 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:14,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:14,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:50:14,624 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:50:14,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:50:14,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:50:14,626 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 62 states. [2018-07-25 08:50:15,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:15,161 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2018-07-25 08:50:15,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:50:15,161 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:50:15,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:15,163 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:50:15,163 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:50:15,165 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1981, Invalid=6391, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:50:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:50:15,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:50:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:50:15,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-25 08:50:15,208 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-07-25 08:50:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:15,208 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-25 08:50:15,208 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:50:15,209 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-25 08:50:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:50:15,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:15,210 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 1, 1, 1, 1] [2018-07-25 08:50:15,210 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1571080489, now seen corresponding path program 58 times [2018-07-25 08:50:15,210 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 930 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:15,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:15,351 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:50:15,351 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:50:15,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:50:15,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:50:15,352 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 35 states. [2018-07-25 08:50:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:15,529 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-07-25 08:50:15,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:50:15,529 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 124 [2018-07-25 08:50:15,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:15,530 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:50:15,531 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:50:15,532 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:50:15,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:50:15,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-07-25 08:50:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:50:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 08:50:15,579 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124 [2018-07-25 08:50:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:15,580 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 08:50:15,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:50:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 08:50:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:50:15,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:15,581 INFO L354 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-07-25 08:50:15,582 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:15,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2020085917, now seen corresponding path program 59 times [2018-07-25 08:50:15,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 930 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:15,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:15,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:50:15,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:50:15,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:50:15,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:50:15,962 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 64 states. [2018-07-25 08:50:16,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,419 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2018-07-25 08:50:16,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:50:16,419 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:50:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,421 INFO L225 Difference]: With dead ends: 194 [2018-07-25 08:50:16,421 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:50:16,422 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=2109, Invalid=6821, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:50:16,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:50:16,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:50:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:50:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 08:50:16,459 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-07-25 08:50:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,459 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 08:50:16,459 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:50:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 08:50:16,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:50:16,460 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:16,460 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 1, 1, 1, 1] [2018-07-25 08:50:16,461 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:16,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2012453021, now seen corresponding path program 60 times [2018-07-25 08:50:16,461 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 992 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:16,588 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:16,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:50:16,589 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:50:16,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:50:16,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:50:16,589 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 36 states. [2018-07-25 08:50:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,746 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2018-07-25 08:50:16,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:50:16,746 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 128 [2018-07-25 08:50:16,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,748 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:50:16,748 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:50:16,749 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:50:16,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:50:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2018-07-25 08:50:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:50:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-25 08:50:16,791 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-07-25 08:50:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,791 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-25 08:50:16,791 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:50:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-25 08:50:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:50:16,793 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:16,793 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-07-25 08:50:16,793 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1232122327, now seen corresponding path program 61 times [2018-07-25 08:50:16,794 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 992 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:17,071 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:17,072 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:50:17,072 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:50:17,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:50:17,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:50:17,074 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 66 states. [2018-07-25 08:50:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:17,502 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2018-07-25 08:50:17,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:50:17,502 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:50:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:17,503 INFO L225 Difference]: With dead ends: 200 [2018-07-25 08:50:17,503 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:50:17,505 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2241, Invalid=7265, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:50:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:50:17,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:50:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:50:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 08:50:17,542 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-07-25 08:50:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:17,542 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 08:50:17,542 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:50:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 08:50:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:50:17,546 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:17,546 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 32, 31, 1, 1, 1, 1] [2018-07-25 08:50:17,546 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:17,546 INFO L82 PathProgramCache]: Analyzing trace with hash -452907503, now seen corresponding path program 62 times [2018-07-25 08:50:17,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 1056 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:17,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:17,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:50:17,673 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:50:17,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:50:17,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:50:17,674 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 37 states. [2018-07-25 08:50:17,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:17,822 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-07-25 08:50:17,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:50:17,822 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 132 [2018-07-25 08:50:17,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:17,823 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:50:17,823 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:50:17,824 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:50:17,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:50:17,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-07-25 08:50:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:50:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 08:50:17,862 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-07-25 08:50:17,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:17,862 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 08:50:17,862 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:50:17,862 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 08:50:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:50:17,864 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:17,864 INFO L354 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-07-25 08:50:17,864 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:17,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1452361141, now seen corresponding path program 63 times [2018-07-25 08:50:17,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1056 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:18,144 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:18,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:50:18,145 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:50:18,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:50:18,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:50:18,146 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 68 states. [2018-07-25 08:50:18,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:18,669 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2018-07-25 08:50:18,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:50:18,669 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:50:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:18,670 INFO L225 Difference]: With dead ends: 206 [2018-07-25 08:50:18,670 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:50:18,672 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2377, Invalid=7723, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:50:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:50:18,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:50:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:50:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-25 08:50:18,711 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2018-07-25 08:50:18,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:18,711 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-25 08:50:18,711 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:50:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-25 08:50:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:50:18,715 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:18,715 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 33, 32, 1, 1, 1, 1] [2018-07-25 08:50:18,715 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:18,716 INFO L82 PathProgramCache]: Analyzing trace with hash -745371259, now seen corresponding path program 64 times [2018-07-25 08:50:18,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 1122 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:18,846 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:18,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:50:18,846 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:50:18,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:50:18,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:50:18,847 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 38 states. [2018-07-25 08:50:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:19,001 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-07-25 08:50:19,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:50:19,001 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 136 [2018-07-25 08:50:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:19,002 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:50:19,002 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:50:19,003 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1927, Invalid=3185, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:50:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:50:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-07-25 08:50:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:50:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 08:50:19,044 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-07-25 08:50:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:19,044 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 08:50:19,045 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:50:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 08:50:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:50:19,045 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:19,046 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-07-25 08:50:19,046 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:19,046 INFO L82 PathProgramCache]: Analyzing trace with hash 957810879, now seen corresponding path program 65 times [2018-07-25 08:50:19,046 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1122 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:19,389 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:19,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:50:19,390 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:50:19,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:50:19,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:50:19,391 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 70 states. [2018-07-25 08:50:19,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:19,915 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2018-07-25 08:50:19,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:50:19,915 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:50:19,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:19,917 INFO L225 Difference]: With dead ends: 212 [2018-07-25 08:50:19,917 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:50:19,919 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2517, Invalid=8195, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:50:19,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:50:19,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:50:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:50:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 08:50:19,967 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-25 08:50:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:19,967 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 08:50:19,967 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:50:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 08:50:19,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:50:19,968 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:19,968 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 1, 1, 1, 1] [2018-07-25 08:50:19,969 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:19,969 INFO L82 PathProgramCache]: Analyzing trace with hash 32287481, now seen corresponding path program 66 times [2018-07-25 08:50:19,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 1190 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:20,129 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:20,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:50:20,129 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:50:20,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:50:20,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:50:20,130 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 39 states. [2018-07-25 08:50:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:20,269 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-07-25 08:50:20,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:50:20,270 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 140 [2018-07-25 08:50:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:20,271 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:50:20,271 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:50:20,272 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:50:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:50:20,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2018-07-25 08:50:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:50:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-25 08:50:20,313 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2018-07-25 08:50:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:20,314 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-25 08:50:20,314 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:50:20,314 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-25 08:50:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:50:20,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:20,315 INFO L354 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-07-25 08:50:20,315 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:20,315 INFO L82 PathProgramCache]: Analyzing trace with hash 963550515, now seen corresponding path program 67 times [2018-07-25 08:50:20,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1190 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:20,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:20,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:50:20,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:50:20,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:50:20,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:50:20,600 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 72 states. [2018-07-25 08:50:21,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:21,114 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2018-07-25 08:50:21,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:50:21,115 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:50:21,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:21,116 INFO L225 Difference]: With dead ends: 218 [2018-07-25 08:50:21,116 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:50:21,118 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2661, Invalid=8681, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:50:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:50:21,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:50:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:50:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 08:50:21,162 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 142 [2018-07-25 08:50:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:21,162 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 08:50:21,162 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:50:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 08:50:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:50:21,163 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:21,163 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 1, 1, 1, 1] [2018-07-25 08:50:21,164 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2111083117, now seen corresponding path program 68 times [2018-07-25 08:50:21,164 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1260 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:21,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:21,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:50:21,306 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:50:21,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:50:21,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:50:21,306 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 40 states. [2018-07-25 08:50:21,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:21,476 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-07-25 08:50:21,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:50:21,476 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 144 [2018-07-25 08:50:21,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:21,477 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:50:21,477 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:50:21,478 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:50:21,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:50:21,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2018-07-25 08:50:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:50:21,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 08:50:21,522 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-25 08:50:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:21,522 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 08:50:21,522 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:50:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 08:50:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:50:21,523 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:21,523 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-07-25 08:50:21,524 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:21,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1526364071, now seen corresponding path program 69 times [2018-07-25 08:50:21,524 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1260 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:21,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:21,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:50:21,872 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:50:21,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:50:21,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:50:21,874 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 74 states. [2018-07-25 08:50:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:22,649 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2018-07-25 08:50:22,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:50:22,649 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:50:22,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:22,650 INFO L225 Difference]: With dead ends: 224 [2018-07-25 08:50:22,651 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:50:22,652 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=2809, Invalid=9181, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:50:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:50:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:50:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:50:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-25 08:50:22,708 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-07-25 08:50:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:22,708 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-25 08:50:22,708 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:50:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-25 08:50:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:50:22,709 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:22,710 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 36, 35, 1, 1, 1, 1] [2018-07-25 08:50:22,710 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:22,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1687109601, now seen corresponding path program 70 times [2018-07-25 08:50:22,710 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:22,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 1332 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:22,918 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:22,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:50:22,918 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:50:22,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:50:22,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:50:22,919 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 41 states. [2018-07-25 08:50:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:23,098 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-07-25 08:50:23,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:50:23,098 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 148 [2018-07-25 08:50:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:23,100 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:50:23,100 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:50:23,100 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1369 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:50:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:50:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2018-07-25 08:50:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:50:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 08:50:23,146 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 148 [2018-07-25 08:50:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:23,147 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 08:50:23,147 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:50:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 08:50:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:50:23,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:23,148 INFO L354 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-07-25 08:50:23,148 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:23,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2109708315, now seen corresponding path program 71 times [2018-07-25 08:50:23,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1332 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:23,485 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:23,485 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:50:23,486 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:50:23,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:50:23,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:50:23,487 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 76 states. [2018-07-25 08:50:24,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:24,008 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2018-07-25 08:50:24,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:50:24,008 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:50:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:24,009 INFO L225 Difference]: With dead ends: 230 [2018-07-25 08:50:24,009 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:50:24,011 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2961, Invalid=9695, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:50:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:50:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:50:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:50:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 08:50:24,063 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-07-25 08:50:24,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:24,064 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 08:50:24,064 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:50:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 08:50:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:50:24,065 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:24,065 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 37, 36, 1, 1, 1, 1] [2018-07-25 08:50:24,065 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:24,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1562266795, now seen corresponding path program 72 times [2018-07-25 08:50:24,066 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 1406 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:24,226 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:24,226 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:50:24,226 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:50:24,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:50:24,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:50:24,227 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 42 states. [2018-07-25 08:50:24,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:24,408 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2018-07-25 08:50:24,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:50:24,409 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 152 [2018-07-25 08:50:24,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:24,410 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:50:24,410 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:50:24,411 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:50:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:50:24,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-07-25 08:50:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:50:24,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-25 08:50:24,466 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-07-25 08:50:24,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:24,466 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-25 08:50:24,466 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:50:24,467 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-25 08:50:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:50:24,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:24,468 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-07-25 08:50:24,468 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:24,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1900215951, now seen corresponding path program 73 times [2018-07-25 08:50:24,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1406 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:24,840 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:24,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:50:24,841 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:50:24,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:50:24,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:50:24,842 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 78 states. [2018-07-25 08:50:25,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:25,294 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2018-07-25 08:50:25,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:50:25,294 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:50:25,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:25,295 INFO L225 Difference]: With dead ends: 236 [2018-07-25 08:50:25,295 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:50:25,296 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3117, Invalid=10223, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:50:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:50:25,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:50:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:50:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 08:50:25,337 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-07-25 08:50:25,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:25,338 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 08:50:25,338 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:50:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 08:50:25,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:50:25,339 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:25,339 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 38, 37, 1, 1, 1, 1] [2018-07-25 08:50:25,339 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:25,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1257182007, now seen corresponding path program 74 times [2018-07-25 08:50:25,339 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 1482 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:25,496 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:25,496 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:50:25,496 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:50:25,497 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:50:25,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:50:25,500 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 43 states. [2018-07-25 08:50:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:25,693 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-07-25 08:50:25,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:50:25,693 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 156 [2018-07-25 08:50:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:25,694 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:50:25,694 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:50:25,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:50:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:50:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-07-25 08:50:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:50:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 08:50:25,733 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-07-25 08:50:25,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:25,733 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 08:50:25,733 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:50:25,734 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 08:50:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:50:25,735 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:25,735 INFO L354 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-07-25 08:50:25,735 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:25,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1266046205, now seen corresponding path program 75 times [2018-07-25 08:50:25,735 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1482 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:26,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:26,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:50:26,152 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:50:26,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:50:26,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:50:26,153 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 80 states. [2018-07-25 08:50:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:26,687 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-07-25 08:50:26,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:50:26,687 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:50:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:26,688 INFO L225 Difference]: With dead ends: 242 [2018-07-25 08:50:26,688 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:50:26,689 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3277, Invalid=10765, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:50:26,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:50:26,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:50:26,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:50:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-25 08:50:26,725 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2018-07-25 08:50:26,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:26,725 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-25 08:50:26,726 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:50:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-25 08:50:26,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:50:26,726 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:26,726 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 1, 1, 1, 1] [2018-07-25 08:50:26,727 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:26,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1726082109, now seen corresponding path program 76 times [2018-07-25 08:50:26,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1560 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:26,875 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:26,875 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:50:26,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:50:26,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:50:26,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:50:26,876 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 44 states. [2018-07-25 08:50:27,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:27,010 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-07-25 08:50:27,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:50:27,011 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 160 [2018-07-25 08:50:27,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:27,012 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:50:27,012 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:50:27,012 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2626, Invalid=4346, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:50:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:50:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2018-07-25 08:50:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:50:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 08:50:27,048 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-07-25 08:50:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:27,049 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 08:50:27,049 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:50:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 08:50:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:50:27,049 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:27,050 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-07-25 08:50:27,050 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:27,050 INFO L82 PathProgramCache]: Analyzing trace with hash 907582839, now seen corresponding path program 77 times [2018-07-25 08:50:27,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1560 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:27,326 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:27,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:50:27,327 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:50:27,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:50:27,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:50:27,328 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 82 states. [2018-07-25 08:50:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:28,029 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2018-07-25 08:50:28,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:50:28,029 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:50:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:28,030 INFO L225 Difference]: With dead ends: 248 [2018-07-25 08:50:28,030 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:50:28,032 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3441, Invalid=11321, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:50:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:50:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:50:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:50:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 08:50:28,069 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-25 08:50:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:28,069 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 08:50:28,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:50:28,069 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 08:50:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:50:28,070 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:28,070 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 40, 39, 1, 1, 1, 1] [2018-07-25 08:50:28,071 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:28,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1818644047, now seen corresponding path program 78 times [2018-07-25 08:50:28,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 1640 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:28,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:28,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:50:28,200 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:50:28,201 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:50:28,201 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:50:28,201 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 45 states. [2018-07-25 08:50:28,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:28,340 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2018-07-25 08:50:28,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:50:28,340 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 164 [2018-07-25 08:50:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:28,341 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:50:28,341 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:50:28,342 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:50:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:50:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2018-07-25 08:50:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:50:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-25 08:50:28,381 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2018-07-25 08:50:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:28,381 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-25 08:50:28,382 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:50:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-25 08:50:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:50:28,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:28,382 INFO L354 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-07-25 08:50:28,383 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:28,383 INFO L82 PathProgramCache]: Analyzing trace with hash 334812651, now seen corresponding path program 79 times [2018-07-25 08:50:28,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1640 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:28,725 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:28,725 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:50:28,725 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:50:28,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:50:28,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:50:28,726 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 84 states. [2018-07-25 08:50:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:29,420 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2018-07-25 08:50:29,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:50:29,421 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:50:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:29,422 INFO L225 Difference]: With dead ends: 254 [2018-07-25 08:50:29,422 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:50:29,423 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3609, Invalid=11891, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:50:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:50:29,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:50:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:50:29,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 08:50:29,466 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 166 [2018-07-25 08:50:29,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:29,466 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 08:50:29,466 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:50:29,466 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 08:50:29,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:50:29,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:29,468 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 1, 1, 1, 1] [2018-07-25 08:50:29,468 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:29,468 INFO L82 PathProgramCache]: Analyzing trace with hash -436388571, now seen corresponding path program 80 times [2018-07-25 08:50:29,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:29,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 1722 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:29,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:29,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:50:29,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:50:29,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:50:29,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:50:29,607 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 46 states. [2018-07-25 08:50:29,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:29,776 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-07-25 08:50:29,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:50:29,776 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 168 [2018-07-25 08:50:29,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:29,777 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:50:29,777 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:50:29,778 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:50:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:50:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2018-07-25 08:50:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:50:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 08:50:29,819 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-25 08:50:29,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:29,819 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 08:50:29,819 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:50:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 08:50:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:50:29,820 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:29,820 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-07-25 08:50:29,820 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:29,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1537430623, now seen corresponding path program 81 times [2018-07-25 08:50:29,821 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1722 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:30,106 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:30,106 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:50:30,107 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:50:30,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:50:30,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:50:30,108 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 86 states. [2018-07-25 08:50:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:30,666 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2018-07-25 08:50:30,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:50:30,666 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:50:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:30,667 INFO L225 Difference]: With dead ends: 260 [2018-07-25 08:50:30,667 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:50:30,668 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3781, Invalid=12475, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:50:30,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:50:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:50:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:50:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-25 08:50:30,713 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-07-25 08:50:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:30,713 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-25 08:50:30,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:50:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-25 08:50:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:50:30,714 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:30,715 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 42, 41, 1, 1, 1, 1] [2018-07-25 08:50:30,715 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:30,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1739485543, now seen corresponding path program 82 times [2018-07-25 08:50:30,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1806 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:30,847 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:30,847 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:50:30,848 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:50:30,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:50:30,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:50:30,848 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 47 states. [2018-07-25 08:50:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:31,015 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-07-25 08:50:31,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:50:31,015 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 172 [2018-07-25 08:50:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:31,016 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:50:31,016 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:50:31,017 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1849 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:50:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:50:31,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-07-25 08:50:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:50:31,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 08:50:31,063 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 172 [2018-07-25 08:50:31,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:31,063 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 08:50:31,063 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:50:31,063 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 08:50:31,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:50:31,064 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:31,064 INFO L354 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-07-25 08:50:31,064 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:31,064 INFO L82 PathProgramCache]: Analyzing trace with hash -903276333, now seen corresponding path program 83 times [2018-07-25 08:50:31,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1806 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:31,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:31,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:50:31,353 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:50:31,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:50:31,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:50:31,354 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 88 states. [2018-07-25 08:50:31,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:31,982 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2018-07-25 08:50:31,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:50:31,982 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:50:31,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:31,983 INFO L225 Difference]: With dead ends: 266 [2018-07-25 08:50:31,983 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:50:31,984 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3957, Invalid=13073, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:50:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:50:32,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:50:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:50:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 08:50:32,030 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-07-25 08:50:32,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:32,030 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 08:50:32,030 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:50:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 08:50:32,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:50:32,031 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:32,032 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 43, 42, 1, 1, 1, 1] [2018-07-25 08:50:32,032 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:32,032 INFO L82 PathProgramCache]: Analyzing trace with hash 878421517, now seen corresponding path program 84 times [2018-07-25 08:50:32,032 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 1892 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:32,172 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:32,172 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:50:32,173 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:50:32,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:50:32,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:50:32,174 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 48 states. [2018-07-25 08:50:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:32,327 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2018-07-25 08:50:32,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:50:32,327 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 176 [2018-07-25 08:50:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:32,328 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:50:32,328 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:50:32,329 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:50:32,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:50:32,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-07-25 08:50:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:50:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-25 08:50:32,376 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-07-25 08:50:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:32,377 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-25 08:50:32,377 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:50:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-25 08:50:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:50:32,378 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:32,378 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-07-25 08:50:32,378 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:32,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1945427129, now seen corresponding path program 85 times [2018-07-25 08:50:32,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1892 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:32,726 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:32,726 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:50:32,726 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:50:32,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:50:32,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:50:32,727 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 90 states. [2018-07-25 08:50:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:33,360 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2018-07-25 08:50:33,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:50:33,360 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:50:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:33,361 INFO L225 Difference]: With dead ends: 272 [2018-07-25 08:50:33,361 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:50:33,362 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=4137, Invalid=13685, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:50:33,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:50:33,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:50:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:50:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 08:50:33,408 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-07-25 08:50:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:33,408 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 08:50:33,408 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:50:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 08:50:33,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:50:33,409 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:33,409 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 44, 43, 1, 1, 1, 1] [2018-07-25 08:50:33,409 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:33,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1398834049, now seen corresponding path program 86 times [2018-07-25 08:50:33,409 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 1980 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:33,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:33,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:50:33,560 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:50:33,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:50:33,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:50:33,560 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 49 states. [2018-07-25 08:50:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:33,717 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-07-25 08:50:33,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:50:33,717 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 180 [2018-07-25 08:50:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:33,718 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:50:33,718 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:50:33,719 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:50:33,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:50:33,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-07-25 08:50:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:50:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 08:50:33,770 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-07-25 08:50:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:33,770 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 08:50:33,770 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:50:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 08:50:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:50:33,771 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:33,771 INFO L354 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-07-25 08:50:33,771 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:33,772 INFO L82 PathProgramCache]: Analyzing trace with hash -45190213, now seen corresponding path program 87 times [2018-07-25 08:50:33,772 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1980 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:34,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:34,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:50:34,102 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:50:34,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:50:34,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:50:34,103 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 92 states. [2018-07-25 08:50:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:34,929 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2018-07-25 08:50:34,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:50:34,929 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:50:34,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:34,930 INFO L225 Difference]: With dead ends: 278 [2018-07-25 08:50:34,931 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:50:34,932 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4321, Invalid=14311, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:50:34,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:50:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:50:34,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:50:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-25 08:50:34,995 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2018-07-25 08:50:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:34,995 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-25 08:50:34,995 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:50:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-25 08:50:34,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:50:34,996 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:34,997 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 45, 44, 1, 1, 1, 1] [2018-07-25 08:50:34,997 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:34,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1579493109, now seen corresponding path program 88 times [2018-07-25 08:50:34,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 2070 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:35,202 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:35,202 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:50:35,202 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:50:35,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:50:35,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:50:35,203 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 50 states. [2018-07-25 08:50:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:35,350 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2018-07-25 08:50:35,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:50:35,350 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 184 [2018-07-25 08:50:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:35,351 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:50:35,351 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:50:35,352 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:50:35,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:50:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2018-07-25 08:50:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:50:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 08:50:35,400 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-07-25 08:50:35,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:35,401 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 08:50:35,401 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:50:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 08:50:35,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:50:35,401 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:35,401 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-07-25 08:50:35,402 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:35,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1769474607, now seen corresponding path program 89 times [2018-07-25 08:50:35,402 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:35,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 2070 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:35,761 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:35,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:50:35,762 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:50:35,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:50:35,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:50:35,763 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 94 states. [2018-07-25 08:50:36,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:36,468 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2018-07-25 08:50:36,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:50:36,468 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:50:36,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:36,469 INFO L225 Difference]: With dead ends: 284 [2018-07-25 08:50:36,469 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:50:36,471 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4509, Invalid=14951, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:50:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:50:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:50:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:50:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 08:50:36,521 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-25 08:50:36,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:36,521 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 08:50:36,521 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:50:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 08:50:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:50:36,522 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:36,522 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 46, 45, 1, 1, 1, 1] [2018-07-25 08:50:36,522 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:36,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1290702953, now seen corresponding path program 90 times [2018-07-25 08:50:36,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 2162 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:36,679 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:36,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:50:36,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:50:36,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:50:36,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:50:36,680 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 51 states. [2018-07-25 08:50:36,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:36,863 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2018-07-25 08:50:36,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:50:36,864 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 188 [2018-07-25 08:50:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:36,864 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:50:36,865 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:50:36,865 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:50:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:50:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2018-07-25 08:50:36,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:50:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-25 08:50:36,915 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2018-07-25 08:50:36,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:36,916 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-25 08:50:36,916 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:50:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-25 08:50:36,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:50:36,917 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:36,917 INFO L354 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-07-25 08:50:36,917 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:36,918 INFO L82 PathProgramCache]: Analyzing trace with hash -879958365, now seen corresponding path program 91 times [2018-07-25 08:50:36,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2162 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:37,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:37,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:50:37,279 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:50:37,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:50:37,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:50:37,280 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 96 states. [2018-07-25 08:50:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:38,047 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2018-07-25 08:50:38,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:50:38,047 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:50:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:38,048 INFO L225 Difference]: With dead ends: 290 [2018-07-25 08:50:38,048 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:50:38,050 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4701, Invalid=15605, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:50:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:50:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:50:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:50:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 08:50:38,101 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 190 [2018-07-25 08:50:38,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:38,101 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 08:50:38,101 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:50:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 08:50:38,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:50:38,102 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:38,102 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 47, 46, 1, 1, 1, 1] [2018-07-25 08:50:38,102 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:38,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1736556509, now seen corresponding path program 92 times [2018-07-25 08:50:38,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:38,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 2256 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:38,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:38,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:50:38,323 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:50:38,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:50:38,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:50:38,324 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 52 states. [2018-07-25 08:50:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:38,489 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-07-25 08:50:38,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:50:38,489 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 192 [2018-07-25 08:50:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:38,490 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:50:38,490 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:50:38,491 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:50:38,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:50:38,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-07-25 08:50:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:50:38,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 08:50:38,551 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-25 08:50:38,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:38,552 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 08:50:38,552 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:50:38,552 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 08:50:38,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:50:38,553 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:38,553 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-07-25 08:50:38,553 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:38,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1911420649, now seen corresponding path program 93 times [2018-07-25 08:50:38,554 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2256 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:38,916 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:38,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:50:38,917 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:50:38,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:50:38,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:50:38,918 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 98 states. [2018-07-25 08:50:39,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:39,712 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2018-07-25 08:50:39,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:50:39,712 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:50:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:39,713 INFO L225 Difference]: With dead ends: 296 [2018-07-25 08:50:39,714 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:50:39,715 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=4897, Invalid=16273, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:50:39,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:50:39,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:50:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:50:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-25 08:50:39,789 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-07-25 08:50:39,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:39,790 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-25 08:50:39,790 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:50:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-25 08:50:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:50:39,791 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:39,791 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 48, 47, 1, 1, 1, 1] [2018-07-25 08:50:39,791 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:39,792 INFO L82 PathProgramCache]: Analyzing trace with hash 86226257, now seen corresponding path program 94 times [2018-07-25 08:50:39,792 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 2352 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:39,971 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:39,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:50:39,972 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:50:39,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:50:39,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:50:39,973 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 53 states. [2018-07-25 08:50:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:40,144 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2018-07-25 08:50:40,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:50:40,144 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 196 [2018-07-25 08:50:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:40,145 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:50:40,145 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:50:40,146 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2401 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:50:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:50:40,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-07-25 08:50:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:50:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 08:50:40,215 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 196 [2018-07-25 08:50:40,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:40,215 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 08:50:40,215 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:50:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 08:50:40,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:50:40,216 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:40,216 INFO L354 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-07-25 08:50:40,216 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:40,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1259106699, now seen corresponding path program 95 times [2018-07-25 08:50:40,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2352 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:40,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:40,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:50:40,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:50:40,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:50:40,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:50:40,600 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 100 states. [2018-07-25 08:50:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:41,471 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2018-07-25 08:50:41,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:50:41,471 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:50:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:41,472 INFO L225 Difference]: With dead ends: 302 [2018-07-25 08:50:41,472 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:50:41,474 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5097, Invalid=16955, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:50:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:50:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:50:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:50:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 08:50:41,543 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-07-25 08:50:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:41,543 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 08:50:41,543 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:50:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 08:50:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:50:41,544 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:41,545 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 49, 48, 1, 1, 1, 1] [2018-07-25 08:50:41,545 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:41,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1285124293, now seen corresponding path program 96 times [2018-07-25 08:50:41,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4802 backedges. 2450 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:41,792 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:41,792 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:50:41,793 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:50:41,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:50:41,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:50:41,794 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 54 states. [2018-07-25 08:50:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:42,044 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2018-07-25 08:50:42,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:50:42,044 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 200 [2018-07-25 08:50:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:42,045 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:50:42,045 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:50:42,046 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:50:42,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:50:42,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2018-07-25 08:50:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:50:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-25 08:50:42,109 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-07-25 08:50:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:42,109 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-25 08:50:42,109 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:50:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-25 08:50:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:50:42,110 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:42,110 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-07-25 08:50:42,110 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:42,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1946083329, now seen corresponding path program 97 times [2018-07-25 08:50:42,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2450 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:42,560 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:42,560 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:50:42,560 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:50:42,561 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:50:42,562 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:50:42,562 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 102 states. [2018-07-25 08:50:43,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:43,377 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2018-07-25 08:50:43,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:50:43,377 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:50:43,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:43,378 INFO L225 Difference]: With dead ends: 308 [2018-07-25 08:50:43,378 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:50:43,380 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5301, Invalid=17651, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:50:43,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:50:43,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:50:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:50:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 08:50:43,434 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-07-25 08:50:43,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:43,434 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 08:50:43,434 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:50:43,434 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 08:50:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:50:43,435 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:43,435 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 50, 49, 1, 1, 1, 1] [2018-07-25 08:50:43,435 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:43,435 INFO L82 PathProgramCache]: Analyzing trace with hash -198708679, now seen corresponding path program 98 times [2018-07-25 08:50:43,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 2550 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:43,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:43,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:50:43,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:50:43,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:50:43,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:50:43,684 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 55 states. [2018-07-25 08:50:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:43,926 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-07-25 08:50:43,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:50:43,927 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 204 [2018-07-25 08:50:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:43,928 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:50:43,928 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:50:43,929 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:50:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:50:43,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2018-07-25 08:50:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:50:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 08:50:43,986 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-07-25 08:50:43,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:43,986 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 08:50:43,986 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:50:43,986 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 08:50:43,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:50:43,987 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:43,987 INFO L354 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-07-25 08:50:43,987 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:43,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1980427149, now seen corresponding path program 99 times [2018-07-25 08:50:43,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2550 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:44,409 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:44,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:50:44,410 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:50:44,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:50:44,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:50:44,411 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 104 states. [2018-07-25 08:50:45,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:45,003 INFO L93 Difference]: Finished difference Result 314 states and 316 transitions. [2018-07-25 08:50:45,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:50:45,003 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:50:45,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:45,004 INFO L225 Difference]: With dead ends: 314 [2018-07-25 08:50:45,004 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:50:45,006 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5509, Invalid=18361, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:50:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:50:45,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:50:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:50:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-25 08:50:45,070 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2018-07-25 08:50:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:45,070 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-25 08:50:45,070 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:50:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-25 08:50:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:50:45,071 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:45,071 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 51, 50, 1, 1, 1, 1] [2018-07-25 08:50:45,071 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:45,071 INFO L82 PathProgramCache]: Analyzing trace with hash 26491309, now seen corresponding path program 100 times [2018-07-25 08:50:45,071 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5202 backedges. 2652 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:45,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:45,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:50:45,266 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:50:45,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:50:45,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:50:45,266 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 56 states. [2018-07-25 08:50:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:45,496 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2018-07-25 08:50:45,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:50:45,496 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 208 [2018-07-25 08:50:45,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:45,497 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:50:45,497 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:50:45,498 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4348, Invalid=7208, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:50:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:50:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2018-07-25 08:50:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:50:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 08:50:45,558 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-07-25 08:50:45,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:45,558 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 08:50:45,558 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:50:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 08:50:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:50:45,559 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:45,560 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-07-25 08:50:45,560 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:45,560 INFO L82 PathProgramCache]: Analyzing trace with hash -311603481, now seen corresponding path program 101 times [2018-07-25 08:50:45,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2652 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:46,038 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:46,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:50:46,039 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:50:46,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:50:46,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:50:46,040 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 106 states. [2018-07-25 08:50:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:46,999 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2018-07-25 08:50:46,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:50:47,000 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:50:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:47,000 INFO L225 Difference]: With dead ends: 320 [2018-07-25 08:50:47,000 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:50:47,002 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5721, Invalid=19085, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:50:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:50:47,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:50:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:50:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 08:50:47,082 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-25 08:50:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:47,083 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 08:50:47,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:50:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 08:50:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:50:47,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:47,084 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 52, 51, 1, 1, 1, 1] [2018-07-25 08:50:47,084 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:47,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1977399519, now seen corresponding path program 102 times [2018-07-25 08:50:47,085 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 2756 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:47,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:47,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:50:47,308 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:50:47,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:50:47,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:50:47,309 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 57 states. [2018-07-25 08:50:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:47,560 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-07-25 08:50:47,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:50:47,560 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 212 [2018-07-25 08:50:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:47,561 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:50:47,561 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:50:47,562 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2809 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:50:47,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:50:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-07-25 08:50:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:50:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-25 08:50:47,632 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2018-07-25 08:50:47,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:47,633 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-25 08:50:47,633 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:50:47,633 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-25 08:50:47,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:50:47,633 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:47,633 INFO L354 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-07-25 08:50:47,634 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:47,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1905340581, now seen corresponding path program 103 times [2018-07-25 08:50:47,634 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 2756 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:48,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:48,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:50:48,217 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:50:48,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:50:48,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:50:48,219 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 108 states. [2018-07-25 08:50:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:49,278 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2018-07-25 08:50:49,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:50:49,279 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:50:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:49,280 INFO L225 Difference]: With dead ends: 326 [2018-07-25 08:50:49,280 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:50:49,282 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5937, Invalid=19823, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:50:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:50:49,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:50:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:50:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 08:50:49,348 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 214 [2018-07-25 08:50:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:49,348 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 08:50:49,348 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:50:49,348 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 08:50:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:50:49,349 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:49,349 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 53, 52, 1, 1, 1, 1] [2018-07-25 08:50:49,349 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:49,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1922701973, now seen corresponding path program 104 times [2018-07-25 08:50:49,350 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5618 backedges. 2862 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:49,617 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:49,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:50:49,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:50:49,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:50:49,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:50:49,618 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 58 states. [2018-07-25 08:50:49,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:49,898 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-07-25 08:50:49,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:50:49,898 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 216 [2018-07-25 08:50:49,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:49,899 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:50:49,899 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:50:49,900 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2916 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:50:49,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:50:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-07-25 08:50:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:50:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 08:50:50,034 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-25 08:50:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:50,034 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 08:50:50,034 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:50:50,035 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 08:50:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:50:50,035 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:50,035 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-07-25 08:50:50,035 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:50,036 INFO L82 PathProgramCache]: Analyzing trace with hash 880711119, now seen corresponding path program 105 times [2018-07-25 08:50:50,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2862 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:50,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:50,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:50:50,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:50:50,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:50:50,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:50:50,490 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 110 states. [2018-07-25 08:50:51,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:51,191 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2018-07-25 08:50:51,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:50:51,191 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:50:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:51,192 INFO L225 Difference]: With dead ends: 332 [2018-07-25 08:50:51,192 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:50:51,194 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6157, Invalid=20575, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:50:51,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:50:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:50:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:50:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-25 08:50:51,255 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-07-25 08:50:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:51,255 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-25 08:50:51,255 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:50:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-25 08:50:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:50:51,256 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:51,256 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 54, 53, 1, 1, 1, 1] [2018-07-25 08:50:51,257 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:51,257 INFO L82 PathProgramCache]: Analyzing trace with hash 792572937, now seen corresponding path program 106 times [2018-07-25 08:50:51,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2970 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:51,460 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:51,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:50:51,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:50:51,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:50:51,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:50:51,461 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 59 states. [2018-07-25 08:50:51,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:51,686 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-07-25 08:50:51,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:50:51,686 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 220 [2018-07-25 08:50:51,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:51,687 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:50:51,687 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:50:51,688 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:50:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:50:51,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2018-07-25 08:50:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:50:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 08:50:51,754 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 220 [2018-07-25 08:50:51,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:51,754 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 08:50:51,754 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:50:51,754 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 08:50:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:50:51,755 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:51,755 INFO L354 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-07-25 08:50:51,755 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:51,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1453433411, now seen corresponding path program 107 times [2018-07-25 08:50:51,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2970 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:52,244 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:52,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:50:52,244 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:50:52,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:50:52,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:50:52,245 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 112 states. [2018-07-25 08:50:53,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:53,064 INFO L93 Difference]: Finished difference Result 338 states and 340 transitions. [2018-07-25 08:50:53,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:50:53,064 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:50:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:53,064 INFO L225 Difference]: With dead ends: 338 [2018-07-25 08:50:53,065 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:50:53,067 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6381, Invalid=21341, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:50:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:50:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:50:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:50:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 08:50:53,140 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-07-25 08:50:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:53,140 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 08:50:53,140 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:50:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 08:50:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:50:53,141 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:53,141 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 55, 54, 1, 1, 1, 1] [2018-07-25 08:50:53,141 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2083318915, now seen corresponding path program 108 times [2018-07-25 08:50:53,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 3080 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:53,372 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:53,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:50:53,373 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:50:53,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:50:53,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:50:53,373 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 60 states. [2018-07-25 08:50:53,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:53,606 INFO L93 Difference]: Finished difference Result 233 states and 234 transitions. [2018-07-25 08:50:53,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:50:53,606 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 224 [2018-07-25 08:50:53,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:53,606 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:50:53,606 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:50:53,607 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3136 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:50:53,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:50:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2018-07-25 08:50:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:50:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-25 08:50:53,685 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-07-25 08:50:53,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:53,686 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-25 08:50:53,686 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:50:53,686 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-25 08:50:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:50:53,687 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:53,687 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-07-25 08:50:53,687 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:53,687 INFO L82 PathProgramCache]: Analyzing trace with hash -614665033, now seen corresponding path program 109 times [2018-07-25 08:50:53,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:54,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3080 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:54,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:54,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:50:54,229 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:50:54,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:50:54,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:50:54,230 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 114 states. [2018-07-25 08:50:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:54,786 INFO L93 Difference]: Finished difference Result 344 states and 346 transitions. [2018-07-25 08:50:54,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:50:54,786 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:50:54,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:54,787 INFO L225 Difference]: With dead ends: 344 [2018-07-25 08:50:54,787 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:50:54,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6609, Invalid=22121, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:50:54,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:50:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:50:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:50:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 08:50:54,855 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-07-25 08:50:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:54,856 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 08:50:54,856 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:50:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 08:50:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:50:54,857 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:54,857 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 56, 55, 1, 1, 1, 1] [2018-07-25 08:50:54,857 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:54,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1134508273, now seen corresponding path program 110 times [2018-07-25 08:50:54,857 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6272 backedges. 3192 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:55,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:55,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:50:55,065 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:50:55,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:50:55,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:50:55,066 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 61 states. [2018-07-25 08:50:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:55,290 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-07-25 08:50:55,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:50:55,290 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 228 [2018-07-25 08:50:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:55,291 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:50:55,291 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:50:55,292 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3249 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:50:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:50:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2018-07-25 08:50:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:50:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 08:50:55,369 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-07-25 08:50:55,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:55,369 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 08:50:55,369 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:50:55,369 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 08:50:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:50:55,370 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:55,370 INFO L354 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-07-25 08:50:55,370 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:55,371 INFO L82 PathProgramCache]: Analyzing trace with hash -659190485, now seen corresponding path program 111 times [2018-07-25 08:50:55,371 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3192 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:55,910 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:55,910 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:50:55,911 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:50:55,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:50:55,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:50:55,912 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 116 states. [2018-07-25 08:50:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:56,786 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2018-07-25 08:50:56,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:50:56,786 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 08:50:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:56,787 INFO L225 Difference]: With dead ends: 350 [2018-07-25 08:50:56,787 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:50:56,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6841, Invalid=22915, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:50:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:50:56,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:50:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:50:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-25 08:50:56,858 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 230 [2018-07-25 08:50:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:56,859 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-25 08:50:56,859 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:50:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-25 08:50:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:50:56,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:56,860 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 57, 56, 1, 1, 1, 1] [2018-07-25 08:50:56,860 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:56,860 INFO L82 PathProgramCache]: Analyzing trace with hash 291972197, now seen corresponding path program 112 times [2018-07-25 08:50:56,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 3306 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:57,081 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:57,081 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:50:57,081 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:50:57,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:50:57,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:50:57,082 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 62 states. [2018-07-25 08:50:57,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:57,305 INFO L93 Difference]: Finished difference Result 241 states and 242 transitions. [2018-07-25 08:50:57,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:50:57,305 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 232 [2018-07-25 08:50:57,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:57,306 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:50:57,306 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:50:57,307 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3364 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5371, Invalid=8909, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:50:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:50:57,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 235. [2018-07-25 08:50:57,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:50:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 08:50:57,377 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-07-25 08:50:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:57,377 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 08:50:57,377 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:50:57,377 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 08:50:57,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:50:57,378 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:57,378 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-07-25 08:50:57,378 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:57,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1412459423, now seen corresponding path program 113 times [2018-07-25 08:50:57,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3306 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:58,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:58,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:50:58,012 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:50:58,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:50:58,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:50:58,013 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 118 states. [2018-07-25 08:50:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:58,855 INFO L93 Difference]: Finished difference Result 356 states and 358 transitions. [2018-07-25 08:50:58,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:50:58,855 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 08:50:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:58,856 INFO L225 Difference]: With dead ends: 356 [2018-07-25 08:50:58,856 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:50:58,858 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=7077, Invalid=23723, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:50:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:50:58,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:50:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:50:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-25 08:50:58,929 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-25 08:50:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:58,930 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-25 08:50:58,930 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:50:58,930 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-25 08:50:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:50:58,930 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:58,930 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 58, 57, 1, 1, 1, 1] [2018-07-25 08:50:58,931 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:58,931 INFO L82 PathProgramCache]: Analyzing trace with hash 527422937, now seen corresponding path program 114 times [2018-07-25 08:50:58,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6728 backedges. 3422 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:59,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:59,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:50:59,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:50:59,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:50:59,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:50:59,146 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 63 states. [2018-07-25 08:50:59,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:59,370 INFO L93 Difference]: Finished difference Result 245 states and 246 transitions. [2018-07-25 08:50:59,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:50:59,370 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 236 [2018-07-25 08:50:59,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:59,371 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:50:59,371 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:50:59,372 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:50:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:50:59,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-07-25 08:50:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:50:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-07-25 08:50:59,443 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 236 [2018-07-25 08:50:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:59,443 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-07-25 08:50:59,443 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:50:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-07-25 08:50:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:50:59,444 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:59,444 INFO L354 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-07-25 08:50:59,445 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:59,445 INFO L82 PathProgramCache]: Analyzing trace with hash 47353875, now seen corresponding path program 115 times [2018-07-25 08:50:59,445 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3422 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:59,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:59,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:50:59,994 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:50:59,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:50:59,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:50:59,996 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 120 states. [2018-07-25 08:51:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:00,904 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2018-07-25 08:51:00,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:51:00,904 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 08:51:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:00,905 INFO L225 Difference]: With dead ends: 362 [2018-07-25 08:51:00,905 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:51:00,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7317, Invalid=24545, Unknown=0, NotChecked=0, Total=31862 [2018-07-25 08:51:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:51:00,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:51:00,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:51:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-25 08:51:00,974 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 238 [2018-07-25 08:51:00,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:00,974 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-25 08:51:00,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:51:00,975 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-25 08:51:00,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:51:00,975 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:00,976 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 59, 58, 1, 1, 1, 1] [2018-07-25 08:51:00,976 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:00,976 INFO L82 PathProgramCache]: Analyzing trace with hash -276935347, now seen corresponding path program 116 times [2018-07-25 08:51:00,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6962 backedges. 3540 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:01,214 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:01,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:51:01,214 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:51:01,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:51:01,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:51:01,215 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 64 states. [2018-07-25 08:51:01,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:01,456 INFO L93 Difference]: Finished difference Result 249 states and 250 transitions. [2018-07-25 08:51:01,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:51:01,456 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 240 [2018-07-25 08:51:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:01,457 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:51:01,457 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:51:01,458 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3600 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:51:01,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:51:01,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 243. [2018-07-25 08:51:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:51:01,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 08:51:01,533 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-25 08:51:01,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:01,534 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 08:51:01,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:51:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 08:51:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:51:01,534 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:01,535 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-07-25 08:51:01,535 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:01,535 INFO L82 PathProgramCache]: Analyzing trace with hash 153156231, now seen corresponding path program 117 times [2018-07-25 08:51:01,535 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3540 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:02,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:02,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:51:02,144 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:51:02,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:51:02,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=10981, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:51:02,146 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 122 states. [2018-07-25 08:51:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:03,162 INFO L93 Difference]: Finished difference Result 368 states and 370 transitions. [2018-07-25 08:51:03,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:51:03,162 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 08:51:03,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:03,163 INFO L225 Difference]: With dead ends: 368 [2018-07-25 08:51:03,163 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:51:03,166 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5251 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=7561, Invalid=25381, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:51:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:51:03,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:51:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:51:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-07-25 08:51:03,242 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-07-25 08:51:03,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:03,242 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-07-25 08:51:03,242 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:51:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-07-25 08:51:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:51:03,243 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:03,243 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 60, 59, 1, 1, 1, 1] [2018-07-25 08:51:03,243 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:03,243 INFO L82 PathProgramCache]: Analyzing trace with hash 316115649, now seen corresponding path program 118 times [2018-07-25 08:51:03,243 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 3660 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:03,490 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:03,490 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:51:03,490 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:51:03,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:51:03,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:51:03,491 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 65 states. [2018-07-25 08:51:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:03,764 INFO L93 Difference]: Finished difference Result 253 states and 254 transitions. [2018-07-25 08:51:03,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:51:03,764 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 244 [2018-07-25 08:51:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:03,765 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:51:03,765 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:51:03,766 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3721 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5923, Invalid=9827, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:51:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:51:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2018-07-25 08:51:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:51:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-25 08:51:03,840 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 244 [2018-07-25 08:51:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:03,841 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-25 08:51:03,841 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:51:03,841 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-25 08:51:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:51:03,841 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:03,841 INFO L354 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-07-25 08:51:03,842 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:03,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1155486981, now seen corresponding path program 119 times [2018-07-25 08:51:03,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3660 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:04,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:04,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:51:04,353 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:51:04,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:51:04,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:51:04,355 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 124 states. [2018-07-25 08:51:05,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:05,251 INFO L93 Difference]: Finished difference Result 374 states and 376 transitions. [2018-07-25 08:51:05,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:51:05,251 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 08:51:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:05,252 INFO L225 Difference]: With dead ends: 374 [2018-07-25 08:51:05,252 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:51:05,255 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7809, Invalid=26231, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 08:51:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:51:05,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:51:05,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:51:05,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-25 08:51:05,328 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-07-25 08:51:05,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:05,328 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-25 08:51:05,328 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:51:05,328 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-25 08:51:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:51:05,329 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:05,329 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 61, 60, 1, 1, 1, 1] [2018-07-25 08:51:05,329 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:05,329 INFO L82 PathProgramCache]: Analyzing trace with hash -364868043, now seen corresponding path program 120 times [2018-07-25 08:51:05,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7442 backedges. 3782 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:05,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:05,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:51:05,563 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:51:05,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:51:05,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:51:05,563 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 66 states. [2018-07-25 08:51:05,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:05,824 INFO L93 Difference]: Finished difference Result 257 states and 258 transitions. [2018-07-25 08:51:05,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:51:05,824 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 248 [2018-07-25 08:51:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:05,825 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:51:05,825 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:51:05,826 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:51:05,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:51:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 251. [2018-07-25 08:51:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:51:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-25 08:51:05,904 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-07-25 08:51:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:05,905 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-25 08:51:05,905 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:51:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-25 08:51:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:51:05,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:05,905 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-07-25 08:51:05,906 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:05,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1549181295, now seen corresponding path program 121 times [2018-07-25 08:51:05,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3782 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:06,491 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:06,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:51:06,491 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:51:06,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:51:06,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:51:06,493 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 126 states. [2018-07-25 08:51:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:07,595 INFO L93 Difference]: Finished difference Result 380 states and 382 transitions. [2018-07-25 08:51:07,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:51:07,595 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 08:51:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:07,596 INFO L225 Difference]: With dead ends: 380 [2018-07-25 08:51:07,596 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:51:07,598 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5612 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=8061, Invalid=27095, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:51:07,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:51:07,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:51:07,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:51:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-25 08:51:07,683 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-07-25 08:51:07,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:07,683 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-25 08:51:07,684 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:51:07,684 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-25 08:51:07,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:51:07,685 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:07,685 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 62, 61, 1, 1, 1, 1] [2018-07-25 08:51:07,685 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:07,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1711167401, now seen corresponding path program 122 times [2018-07-25 08:51:07,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 3906 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:07,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:07,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:51:07,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:51:07,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:51:07,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:51:07,973 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 67 states. [2018-07-25 08:51:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:08,283 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2018-07-25 08:51:08,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:51:08,284 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 252 [2018-07-25 08:51:08,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:08,285 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:51:08,285 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:51:08,286 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3969 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:51:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:51:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2018-07-25 08:51:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:51:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-25 08:51:08,411 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-07-25 08:51:08,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:08,412 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-25 08:51:08,412 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:51:08,412 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-25 08:51:08,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:51:08,413 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:08,413 INFO L354 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-07-25 08:51:08,413 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:08,413 INFO L82 PathProgramCache]: Analyzing trace with hash -540549661, now seen corresponding path program 123 times [2018-07-25 08:51:08,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 3906 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:09,060 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:09,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:51:09,061 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:51:09,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:51:09,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:51:09,062 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 128 states. [2018-07-25 08:51:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:10,074 INFO L93 Difference]: Finished difference Result 386 states and 388 transitions. [2018-07-25 08:51:10,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:51:10,074 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 08:51:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:10,075 INFO L225 Difference]: With dead ends: 386 [2018-07-25 08:51:10,075 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:51:10,076 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=8317, Invalid=27973, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 08:51:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:51:10,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:51:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:51:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-07-25 08:51:10,148 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 254 [2018-07-25 08:51:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:10,149 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-07-25 08:51:10,149 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:51:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-07-25 08:51:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:51:10,150 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:10,150 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 63, 62, 1, 1, 1, 1] [2018-07-25 08:51:10,150 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:10,150 INFO L82 PathProgramCache]: Analyzing trace with hash -975837411, now seen corresponding path program 124 times [2018-07-25 08:51:10,150 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 4032 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:10,411 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:10,411 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:51:10,411 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:51:10,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:51:10,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:51:10,412 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 68 states. [2018-07-25 08:51:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:10,708 INFO L93 Difference]: Finished difference Result 265 states and 266 transitions. [2018-07-25 08:51:10,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:51:10,708 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 256 [2018-07-25 08:51:10,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:10,709 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:51:10,709 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:51:10,710 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4096 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6502, Invalid=10790, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:51:10,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:51:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-07-25 08:51:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:51:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 08:51:10,785 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-07-25 08:51:10,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:10,785 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 08:51:10,785 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:51:10,785 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 08:51:10,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:51:10,786 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:10,786 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-07-25 08:51:10,786 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:10,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1476829097, now seen corresponding path program 125 times [2018-07-25 08:51:10,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 4032 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:11,365 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:11,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:51:11,365 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:51:11,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:51:11,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4289, Invalid=12481, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:51:11,367 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 130 states. [2018-07-25 08:51:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:12,408 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2018-07-25 08:51:12,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:51:12,408 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 08:51:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:12,409 INFO L225 Difference]: With dead ends: 392 [2018-07-25 08:51:12,409 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 08:51:12,411 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5985 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=8577, Invalid=28865, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:51:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 08:51:12,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 08:51:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:51:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-25 08:51:12,495 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-25 08:51:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:12,495 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-25 08:51:12,495 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:51:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-25 08:51:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:51:12,496 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:12,496 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 64, 63, 1, 1, 1, 1] [2018-07-25 08:51:12,497 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:12,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1493974161, now seen corresponding path program 126 times [2018-07-25 08:51:12,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8192 backedges. 4160 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:12,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:12,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:51:12,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:51:12,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:51:12,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:51:12,767 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 69 states. [2018-07-25 08:51:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:13,033 INFO L93 Difference]: Finished difference Result 269 states and 270 transitions. [2018-07-25 08:51:13,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:51:13,034 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 260 [2018-07-25 08:51:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:13,034 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:51:13,035 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:51:13,036 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4225 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:51:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:51:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2018-07-25 08:51:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:51:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-07-25 08:51:13,114 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 260 [2018-07-25 08:51:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:13,115 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-07-25 08:51:13,115 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:51:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-07-25 08:51:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:51:13,116 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:13,116 INFO L354 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-07-25 08:51:13,116 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:13,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1190144203, now seen corresponding path program 127 times [2018-07-25 08:51:13,116 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4160 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:13,750 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:13,750 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:51:13,750 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:51:13,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:51:13,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:51:13,752 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 132 states. [2018-07-25 08:51:14,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:14,743 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2018-07-25 08:51:14,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:51:14,743 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 08:51:14,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:14,744 INFO L225 Difference]: With dead ends: 398 [2018-07-25 08:51:14,744 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:51:14,747 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=8841, Invalid=29771, Unknown=0, NotChecked=0, Total=38612 [2018-07-25 08:51:14,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:51:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:51:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:51:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-25 08:51:14,825 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 262 [2018-07-25 08:51:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:14,825 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-25 08:51:14,825 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:51:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-25 08:51:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:51:14,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:14,827 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 65, 64, 1, 1, 1, 1] [2018-07-25 08:51:14,827 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:14,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1046894597, now seen corresponding path program 128 times [2018-07-25 08:51:14,827 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8450 backedges. 4290 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:15,092 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:15,092 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:51:15,093 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:51:15,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:51:15,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:51:15,093 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 70 states. [2018-07-25 08:51:15,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:15,355 INFO L93 Difference]: Finished difference Result 273 states and 274 transitions. [2018-07-25 08:51:15,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:51:15,356 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 264 [2018-07-25 08:51:15,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:15,356 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:51:15,356 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:51:15,357 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4356 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:51:15,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:51:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2018-07-25 08:51:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:51:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 08:51:15,439 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-25 08:51:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:15,439 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 08:51:15,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:51:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 08:51:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:51:15,440 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:15,440 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-07-25 08:51:15,440 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:15,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1043412799, now seen corresponding path program 129 times [2018-07-25 08:51:15,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4290 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:16,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:16,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:51:16,067 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:51:16,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:51:16,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13267, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:51:16,069 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 134 states. [2018-07-25 08:51:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:17,150 INFO L93 Difference]: Finished difference Result 404 states and 406 transitions. [2018-07-25 08:51:17,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:51:17,151 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 08:51:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:17,151 INFO L225 Difference]: With dead ends: 404 [2018-07-25 08:51:17,151 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:51:17,154 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6370 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9109, Invalid=30691, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:51:17,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:51:17,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 08:51:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:51:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-07-25 08:51:17,233 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-07-25 08:51:17,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:17,234 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-07-25 08:51:17,234 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:51:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-07-25 08:51:17,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:51:17,234 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:17,235 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 66, 65, 1, 1, 1, 1] [2018-07-25 08:51:17,235 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:17,235 INFO L82 PathProgramCache]: Analyzing trace with hash 606681465, now seen corresponding path program 130 times [2018-07-25 08:51:17,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8712 backedges. 4422 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:17,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:17,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:51:17,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:51:17,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:51:17,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:51:17,560 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 71 states. [2018-07-25 08:51:17,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:17,829 INFO L93 Difference]: Finished difference Result 277 states and 278 transitions. [2018-07-25 08:51:17,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:51:17,829 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 268 [2018-07-25 08:51:17,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:17,830 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:51:17,830 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:51:17,832 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4489 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:51:17,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:51:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2018-07-25 08:51:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:51:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-25 08:51:17,923 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 268 [2018-07-25 08:51:17,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:17,923 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-25 08:51:17,923 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:51:17,923 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-25 08:51:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:51:17,924 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:17,924 INFO L354 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-07-25 08:51:17,924 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:17,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1094612045, now seen corresponding path program 131 times [2018-07-25 08:51:17,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4422 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:18,539 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:18,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:51:18,539 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:51:18,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:51:18,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:51:18,541 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 136 states. [2018-07-25 08:51:19,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:19,311 INFO L93 Difference]: Finished difference Result 410 states and 412 transitions. [2018-07-25 08:51:19,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:51:19,311 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 08:51:19,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:19,312 INFO L225 Difference]: With dead ends: 410 [2018-07-25 08:51:19,312 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:51:19,314 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9381, Invalid=31625, Unknown=0, NotChecked=0, Total=41006 [2018-07-25 08:51:19,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:51:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:51:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:51:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-25 08:51:19,396 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-07-25 08:51:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:19,396 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-25 08:51:19,396 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:51:19,396 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-25 08:51:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:51:19,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:19,397 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 67, 66, 1, 1, 1, 1] [2018-07-25 08:51:19,397 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:19,397 INFO L82 PathProgramCache]: Analyzing trace with hash 135913709, now seen corresponding path program 132 times [2018-07-25 08:51:19,398 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8978 backedges. 4556 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:19,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:19,686 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:51:19,687 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:51:19,687 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:51:19,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:51:19,687 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 72 states. [2018-07-25 08:51:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:19,965 INFO L93 Difference]: Finished difference Result 281 states and 282 transitions. [2018-07-25 08:51:19,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:51:19,965 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 272 [2018-07-25 08:51:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:19,966 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:51:19,966 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:51:19,967 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:51:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:51:20,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2018-07-25 08:51:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:51:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-25 08:51:20,058 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-07-25 08:51:20,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:20,058 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-25 08:51:20,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:51:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-25 08:51:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:51:20,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:20,059 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-07-25 08:51:20,060 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:20,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1764107815, now seen corresponding path program 133 times [2018-07-25 08:51:20,060 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4556 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:20,806 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:20,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:51:20,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:51:20,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:51:20,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4829, Invalid=14077, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:51:20,808 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 138 states. [2018-07-25 08:51:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:21,922 INFO L93 Difference]: Finished difference Result 416 states and 418 transitions. [2018-07-25 08:51:21,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:51:21,922 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 08:51:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:21,923 INFO L225 Difference]: With dead ends: 416 [2018-07-25 08:51:21,923 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:51:21,926 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6767 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9657, Invalid=32573, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:51:21,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:51:22,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:51:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:51:22,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-25 08:51:22,055 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-07-25 08:51:22,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:22,055 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-25 08:51:22,055 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:51:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-25 08:51:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:51:22,056 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:22,057 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 68, 67, 1, 1, 1, 1] [2018-07-25 08:51:22,057 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash -142782879, now seen corresponding path program 134 times [2018-07-25 08:51:22,057 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9248 backedges. 4692 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:22,355 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:22,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:51:22,356 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:51:22,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:51:22,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:51:22,357 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 73 states. [2018-07-25 08:51:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:22,669 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2018-07-25 08:51:22,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:51:22,669 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 276 [2018-07-25 08:51:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:22,669 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:51:22,669 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:51:22,671 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4761 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:51:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:51:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-07-25 08:51:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:51:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-25 08:51:22,757 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-07-25 08:51:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:22,758 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-25 08:51:22,758 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:51:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-25 08:51:22,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:51:22,759 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:22,759 INFO L354 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-07-25 08:51:22,759 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:22,759 INFO L82 PathProgramCache]: Analyzing trace with hash 224659099, now seen corresponding path program 135 times [2018-07-25 08:51:22,759 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4692 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:23,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:23,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:51:23,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:51:23,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:51:23,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14491, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:51:23,419 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 140 states. [2018-07-25 08:51:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:24,626 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2018-07-25 08:51:24,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:51:24,627 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 08:51:24,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:24,627 INFO L225 Difference]: With dead ends: 422 [2018-07-25 08:51:24,627 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:51:24,631 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6970 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9937, Invalid=33535, Unknown=0, NotChecked=0, Total=43472 [2018-07-25 08:51:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:51:24,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 08:51:24,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:51:24,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2018-07-25 08:51:24,783 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 278 [2018-07-25 08:51:24,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:24,783 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2018-07-25 08:51:24,783 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:51:24,783 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2018-07-25 08:51:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:51:24,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:24,785 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 69, 68, 1, 1, 1, 1] [2018-07-25 08:51:24,785 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:24,785 INFO L82 PathProgramCache]: Analyzing trace with hash -820477483, now seen corresponding path program 136 times [2018-07-25 08:51:24,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9522 backedges. 4830 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:25,144 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:25,144 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:51:25,144 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:51:25,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:51:25,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:51:25,145 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 74 states. [2018-07-25 08:51:25,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:25,465 INFO L93 Difference]: Finished difference Result 289 states and 290 transitions. [2018-07-25 08:51:25,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:51:25,465 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 280 [2018-07-25 08:51:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:25,466 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:51:25,466 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:51:25,467 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4900 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7741, Invalid=12851, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:51:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:51:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2018-07-25 08:51:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:51:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 08:51:25,559 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 280 [2018-07-25 08:51:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:25,559 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 08:51:25,559 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:51:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 08:51:25,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:51:25,560 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:25,560 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-07-25 08:51:25,560 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:25,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1795173647, now seen corresponding path program 137 times [2018-07-25 08:51:25,560 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4830 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:26,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:26,265 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:51:26,265 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:51:26,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:51:26,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5111, Invalid=14911, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:51:26,267 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 142 states. [2018-07-25 08:51:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:27,418 INFO L93 Difference]: Finished difference Result 428 states and 430 transitions. [2018-07-25 08:51:27,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:51:27,418 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 08:51:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:27,419 INFO L225 Difference]: With dead ends: 428 [2018-07-25 08:51:27,419 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 08:51:27,423 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7176 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=10221, Invalid=34511, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:51:27,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 08:51:27,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 08:51:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:51:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-25 08:51:27,514 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-25 08:51:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:27,514 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-25 08:51:27,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:51:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-25 08:51:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:51:27,515 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:27,515 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 70, 69, 1, 1, 1, 1] [2018-07-25 08:51:27,515 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:27,515 INFO L82 PathProgramCache]: Analyzing trace with hash -80708791, now seen corresponding path program 138 times [2018-07-25 08:51:27,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9800 backedges. 4970 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:27,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:27,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:51:27,862 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:51:27,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:51:27,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:51:27,862 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 75 states. [2018-07-25 08:51:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:28,199 INFO L93 Difference]: Finished difference Result 293 states and 294 transitions. [2018-07-25 08:51:28,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:51:28,199 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 284 [2018-07-25 08:51:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:28,200 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:51:28,200 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:51:28,202 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5041 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:51:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:51:28,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2018-07-25 08:51:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:51:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-07-25 08:51:28,296 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 284 [2018-07-25 08:51:28,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:28,297 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-07-25 08:51:28,297 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:51:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-07-25 08:51:28,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:51:28,298 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:28,298 INFO L354 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1] [2018-07-25 08:51:28,298 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:28,298 INFO L82 PathProgramCache]: Analyzing trace with hash -251684477, now seen corresponding path program 139 times [2018-07-25 08:51:28,298 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 4970 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:29,129 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:29,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:51:29,129 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:51:29,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:51:29,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=15337, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:51:29,131 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 144 states. [2018-07-25 08:51:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:30,461 INFO L93 Difference]: Finished difference Result 434 states and 436 transitions. [2018-07-25 08:51:30,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:51:30,462 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 08:51:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:30,462 INFO L225 Difference]: With dead ends: 434 [2018-07-25 08:51:30,462 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:51:30,465 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7385 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=10509, Invalid=35501, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 08:51:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:51:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:51:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:51:30,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-25 08:51:30,569 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 286 [2018-07-25 08:51:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:30,569 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-25 08:51:30,569 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:51:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-25 08:51:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:51:30,570 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:30,570 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 71, 70, 1, 1, 1, 1] [2018-07-25 08:51:30,570 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:30,570 INFO L82 PathProgramCache]: Analyzing trace with hash 931805885, now seen corresponding path program 140 times [2018-07-25 08:51:30,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:30,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10082 backedges. 5112 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:30,910 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:30,910 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:51:30,910 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:51:30,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:51:30,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:51:30,911 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 76 states. [2018-07-25 08:51:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:31,263 INFO L93 Difference]: Finished difference Result 297 states and 298 transitions. [2018-07-25 08:51:31,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:51:31,263 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 288 [2018-07-25 08:51:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:31,264 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:51:31,264 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:51:31,265 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:51:31,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:51:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2018-07-25 08:51:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:51:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 08:51:31,367 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-25 08:51:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:31,368 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 08:51:31,368 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:51:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 08:51:31,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:51:31,368 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:31,369 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-07-25 08:51:31,369 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:31,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2112310263, now seen corresponding path program 141 times [2018-07-25 08:51:31,369 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 5112 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:32,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:32,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:51:32,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:51:32,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:51:32,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=15769, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:51:32,196 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 146 states. [2018-07-25 08:51:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:33,476 INFO L93 Difference]: Finished difference Result 440 states and 442 transitions. [2018-07-25 08:51:33,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:51:33,477 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 08:51:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:33,477 INFO L225 Difference]: With dead ends: 440 [2018-07-25 08:51:33,477 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:51:33,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7597 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=10801, Invalid=36505, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 08:51:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:51:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 08:51:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:51:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2018-07-25 08:51:33,575 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2018-07-25 08:51:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:33,575 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2018-07-25 08:51:33,575 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:51:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2018-07-25 08:51:33,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:51:33,576 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:33,576 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 72, 71, 1, 1, 1, 1] [2018-07-25 08:51:33,576 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:33,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1332396081, now seen corresponding path program 142 times [2018-07-25 08:51:33,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10368 backedges. 5256 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:33,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:33,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:51:33,886 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:51:33,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:51:33,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:51:33,887 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand 77 states. [2018-07-25 08:51:34,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:34,211 INFO L93 Difference]: Finished difference Result 301 states and 302 transitions. [2018-07-25 08:51:34,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:51:34,211 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 292 [2018-07-25 08:51:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:34,212 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:51:34,212 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:51:34,213 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5329 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:51:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:51:34,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2018-07-25 08:51:34,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:51:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-25 08:51:34,311 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 292 [2018-07-25 08:51:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:34,311 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-25 08:51:34,311 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:51:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-25 08:51:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:51:34,312 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:34,312 INFO L354 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1] [2018-07-25 08:51:34,312 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:34,312 INFO L82 PathProgramCache]: Analyzing trace with hash 532431979, now seen corresponding path program 143 times [2018-07-25 08:51:34,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5256 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:35,105 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:35,105 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:51:35,105 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:51:35,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:51:35,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5549, Invalid=16207, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:51:35,107 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 148 states. [2018-07-25 08:51:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:36,533 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2018-07-25 08:51:36,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:51:36,533 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 08:51:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:36,534 INFO L225 Difference]: With dead ends: 446 [2018-07-25 08:51:36,534 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 08:51:36,536 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11097, Invalid=37523, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 08:51:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 08:51:36,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 08:51:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:51:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-25 08:51:36,635 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 294 [2018-07-25 08:51:36,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:36,635 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-25 08:51:36,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:51:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-25 08:51:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:51:36,636 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:36,637 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 73, 72, 1, 1, 1, 1] [2018-07-25 08:51:36,637 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:36,637 INFO L82 PathProgramCache]: Analyzing trace with hash -577303643, now seen corresponding path program 144 times [2018-07-25 08:51:36,637 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10658 backedges. 5402 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:36,998 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:36,998 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:51:36,999 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:51:36,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:51:36,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:51:36,999 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 78 states. [2018-07-25 08:51:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:37,315 INFO L93 Difference]: Finished difference Result 305 states and 306 transitions. [2018-07-25 08:51:37,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:51:37,315 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 296 [2018-07-25 08:51:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:37,316 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:51:37,316 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:51:37,318 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5476 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:51:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:51:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-07-25 08:51:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:51:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-25 08:51:37,417 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2018-07-25 08:51:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:37,417 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-25 08:51:37,417 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:51:37,417 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-25 08:51:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:51:37,418 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:37,418 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-07-25 08:51:37,418 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:37,418 INFO L82 PathProgramCache]: Analyzing trace with hash -737967393, now seen corresponding path program 145 times [2018-07-25 08:51:37,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5402 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:38,202 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:38,202 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:51:38,203 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:51:38,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:51:38,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5699, Invalid=16651, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:51:38,205 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 150 states. [2018-07-25 08:51:39,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:39,708 INFO L93 Difference]: Finished difference Result 452 states and 454 transitions. [2018-07-25 08:51:39,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:51:39,708 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 08:51:39,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:39,709 INFO L225 Difference]: With dead ends: 452 [2018-07-25 08:51:39,709 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:51:39,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8030 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11397, Invalid=38555, Unknown=0, NotChecked=0, Total=49952 [2018-07-25 08:51:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:51:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:51:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:51:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-25 08:51:39,811 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 298 [2018-07-25 08:51:39,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:39,811 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-25 08:51:39,811 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:51:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-25 08:51:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:51:39,812 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:39,812 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 74, 73, 1, 1, 1, 1] [2018-07-25 08:51:39,813 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:39,813 INFO L82 PathProgramCache]: Analyzing trace with hash 206839065, now seen corresponding path program 146 times [2018-07-25 08:51:39,813 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10952 backedges. 5550 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:40,169 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:40,169 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:51:40,169 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:51:40,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:51:40,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:51:40,170 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 79 states. [2018-07-25 08:51:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:40,540 INFO L93 Difference]: Finished difference Result 309 states and 310 transitions. [2018-07-25 08:51:40,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:51:40,540 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 300 [2018-07-25 08:51:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:40,541 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:51:40,541 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:51:40,542 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5625 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:51:40,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:51:40,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2018-07-25 08:51:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:51:40,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-25 08:51:40,711 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 300 [2018-07-25 08:51:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:40,712 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-25 08:51:40,712 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:51:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-25 08:51:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:51:40,713 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:40,713 INFO L354 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1] [2018-07-25 08:51:40,713 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1203898195, now seen corresponding path program 147 times [2018-07-25 08:51:40,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 5550 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:41,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:41,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:51:41,493 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:51:41,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:51:41,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:51:41,495 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 152 states. [2018-07-25 08:51:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:42,678 INFO L93 Difference]: Finished difference Result 458 states and 460 transitions. [2018-07-25 08:51:42,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:51:42,679 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 08:51:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:42,680 INFO L225 Difference]: With dead ends: 458 [2018-07-25 08:51:42,680 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:51:42,682 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11701, Invalid=39601, Unknown=0, NotChecked=0, Total=51302 [2018-07-25 08:51:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:51:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 08:51:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:51:42,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-07-25 08:51:42,786 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 302 [2018-07-25 08:51:42,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:42,786 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-07-25 08:51:42,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:51:42,786 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-07-25 08:51:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:51:42,787 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:42,787 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 75, 74, 1, 1, 1, 1] [2018-07-25 08:51:42,787 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:42,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1432810637, now seen corresponding path program 148 times [2018-07-25 08:51:42,787 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 5700 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:43,129 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:43,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:51:43,129 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:51:43,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:51:43,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:51:43,130 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 80 states. [2018-07-25 08:51:43,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:43,481 INFO L93 Difference]: Finished difference Result 313 states and 314 transitions. [2018-07-25 08:51:43,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:51:43,482 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 304 [2018-07-25 08:51:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:43,482 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:51:43,482 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:51:43,484 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5776 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9088, Invalid=15092, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:51:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:51:43,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2018-07-25 08:51:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:51:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 08:51:43,603 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 304 [2018-07-25 08:51:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:43,603 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 08:51:43,603 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:51:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 08:51:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:51:43,604 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:43,604 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-07-25 08:51:43,604 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:43,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1753427513, now seen corresponding path program 149 times [2018-07-25 08:51:43,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5700 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:44,521 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:44,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:51:44,522 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:51:44,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:51:44,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6005, Invalid=17557, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:51:44,523 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 154 states. [2018-07-25 08:51:45,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:45,577 INFO L93 Difference]: Finished difference Result 464 states and 466 transitions. [2018-07-25 08:51:45,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:51:45,578 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 08:51:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:45,578 INFO L225 Difference]: With dead ends: 464 [2018-07-25 08:51:45,579 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 08:51:45,583 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8475 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=12009, Invalid=40661, Unknown=0, NotChecked=0, Total=52670 [2018-07-25 08:51:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 08:51:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 08:51:45,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:51:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-25 08:51:45,744 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-25 08:51:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:45,744 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-25 08:51:45,744 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:51:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-25 08:51:45,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:51:45,745 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:45,745 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 76, 75, 1, 1, 1, 1] [2018-07-25 08:51:45,745 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:45,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1108644353, now seen corresponding path program 150 times [2018-07-25 08:51:45,745 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11552 backedges. 5852 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:46,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:46,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:51:46,146 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:51:46,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:51:46,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:51:46,147 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 81 states. [2018-07-25 08:51:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:46,533 INFO L93 Difference]: Finished difference Result 317 states and 318 transitions. [2018-07-25 08:51:46,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:51:46,533 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 308 [2018-07-25 08:51:46,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:46,534 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:51:46,534 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:51:46,536 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5929 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:51:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:51:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2018-07-25 08:51:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:51:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-07-25 08:51:46,657 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 308 [2018-07-25 08:51:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:46,657 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-07-25 08:51:46,658 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:51:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-07-25 08:51:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:51:46,658 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:46,659 INFO L354 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1] [2018-07-25 08:51:46,659 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:46,659 INFO L82 PathProgramCache]: Analyzing trace with hash 255386171, now seen corresponding path program 151 times [2018-07-25 08:51:46,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5852 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:47,656 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:47,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:51:47,657 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:51:47,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:51:47,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=18019, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:51:47,658 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 156 states. [2018-07-25 08:51:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:48,756 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2018-07-25 08:51:48,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:51:48,756 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 08:51:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:48,757 INFO L225 Difference]: With dead ends: 470 [2018-07-25 08:51:48,757 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:51:48,759 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=12321, Invalid=41735, Unknown=0, NotChecked=0, Total=54056 [2018-07-25 08:51:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:51:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:51:48,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:51:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-25 08:51:48,866 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 310 [2018-07-25 08:51:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:48,867 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-25 08:51:48,867 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:51:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-25 08:51:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:51:48,868 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:48,868 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 77, 76, 1, 1, 1, 1] [2018-07-25 08:51:48,868 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:48,868 INFO L82 PathProgramCache]: Analyzing trace with hash 723645813, now seen corresponding path program 152 times [2018-07-25 08:51:48,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11858 backedges. 6006 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:49,223 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:49,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:51:49,224 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:51:49,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:51:49,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:51:49,225 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 82 states. [2018-07-25 08:51:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:49,591 INFO L93 Difference]: Finished difference Result 321 states and 322 transitions. [2018-07-25 08:51:49,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:51:49,591 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 312 [2018-07-25 08:51:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:49,592 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:51:49,592 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:51:49,593 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6084 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:51:49,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:51:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2018-07-25 08:51:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:51:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 08:51:49,713 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-25 08:51:49,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:49,713 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 08:51:49,714 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:51:49,714 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 08:51:49,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:51:49,715 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:49,715 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-07-25 08:51:49,715 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:49,716 INFO L82 PathProgramCache]: Analyzing trace with hash -361023313, now seen corresponding path program 153 times [2018-07-25 08:51:49,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 6006 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:50,586 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:50,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:51:50,586 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:51:50,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:51:50,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6319, Invalid=18487, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:51:50,588 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 158 states. [2018-07-25 08:51:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:52,161 INFO L93 Difference]: Finished difference Result 476 states and 478 transitions. [2018-07-25 08:51:52,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:51:52,161 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 08:51:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:52,161 INFO L225 Difference]: With dead ends: 476 [2018-07-25 08:51:52,161 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:51:52,163 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8932 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=12637, Invalid=42823, Unknown=0, NotChecked=0, Total=55460 [2018-07-25 08:51:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:51:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 08:51:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:51:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2018-07-25 08:51:52,366 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 314 [2018-07-25 08:51:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:52,367 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2018-07-25 08:51:52,367 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:51:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2018-07-25 08:51:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:51:52,369 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:52,369 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 78, 77, 1, 1, 1, 1] [2018-07-25 08:51:52,369 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:52,369 INFO L82 PathProgramCache]: Analyzing trace with hash -120316183, now seen corresponding path program 154 times [2018-07-25 08:51:52,369 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12168 backedges. 6162 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:52,797 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:52,797 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:51:52,798 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:51:52,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:51:52,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:51:52,798 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand 83 states. [2018-07-25 08:51:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:53,191 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2018-07-25 08:51:53,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:51:53,191 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 316 [2018-07-25 08:51:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:53,191 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:51:53,191 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:51:53,193 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:51:53,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:51:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2018-07-25 08:51:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:51:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-07-25 08:51:53,306 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 316 [2018-07-25 08:51:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:53,306 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-07-25 08:51:53,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:51:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-07-25 08:51:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:51:53,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:53,307 INFO L354 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 1, 1, 1, 1] [2018-07-25 08:51:53,307 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:53,307 INFO L82 PathProgramCache]: Analyzing trace with hash 340317475, now seen corresponding path program 155 times [2018-07-25 08:51:53,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6162 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:54,278 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:54,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:51:54,278 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:51:54,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:51:54,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6479, Invalid=18961, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:51:54,281 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 160 states. [2018-07-25 08:51:56,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:56,180 INFO L93 Difference]: Finished difference Result 482 states and 484 transitions. [2018-07-25 08:51:56,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:51:56,181 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 08:51:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:56,181 INFO L225 Difference]: With dead ends: 482 [2018-07-25 08:51:56,181 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 08:51:56,183 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=12957, Invalid=43925, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 08:51:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 08:51:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 08:51:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:51:56,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-25 08:51:56,310 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 318 [2018-07-25 08:51:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:56,310 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-25 08:51:56,310 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:51:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-25 08:51:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:51:56,311 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:56,311 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 79, 78, 1, 1, 1, 1] [2018-07-25 08:51:56,312 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:56,312 INFO L82 PathProgramCache]: Analyzing trace with hash -487584163, now seen corresponding path program 156 times [2018-07-25 08:51:56,312 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12482 backedges. 6320 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:56,739 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:56,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:51:56,739 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:51:56,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:51:56,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:51:56,740 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 84 states. [2018-07-25 08:51:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:51:57,160 INFO L93 Difference]: Finished difference Result 329 states and 330 transitions. [2018-07-25 08:51:57,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:51:57,160 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 320 [2018-07-25 08:51:57,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:51:57,161 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:51:57,161 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:51:57,163 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6400 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:51:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:51:57,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 323. [2018-07-25 08:51:57,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:51:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-07-25 08:51:57,293 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 320 [2018-07-25 08:51:57,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:51:57,293 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-07-25 08:51:57,293 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:51:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-07-25 08:51:57,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:51:57,294 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:51:57,295 INFO L354 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-07-25 08:51:57,295 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:51:57,295 INFO L82 PathProgramCache]: Analyzing trace with hash -416893033, now seen corresponding path program 157 times [2018-07-25 08:51:57,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:51:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:51:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6320 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:51:58,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:51:58,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:51:58,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:51:58,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:51:58,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6641, Invalid=19441, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:51:58,301 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 162 states. [2018-07-25 08:52:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:00,351 INFO L93 Difference]: Finished difference Result 488 states and 490 transitions. [2018-07-25 08:52:00,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:52:00,351 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 08:52:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:00,352 INFO L225 Difference]: With dead ends: 488 [2018-07-25 08:52:00,352 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:52:00,354 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9401 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=13281, Invalid=45041, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 08:52:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:52:00,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 08:52:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:52:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-25 08:52:00,485 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 322 [2018-07-25 08:52:00,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:00,485 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-25 08:52:00,485 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:52:00,485 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-25 08:52:00,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:52:00,486 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:00,486 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 80, 79, 1, 1, 1, 1] [2018-07-25 08:52:00,486 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:00,486 INFO L82 PathProgramCache]: Analyzing trace with hash 817546193, now seen corresponding path program 158 times [2018-07-25 08:52:00,486 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12800 backedges. 6480 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:00,921 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:00,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:52:00,921 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:52:00,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:52:00,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:52:00,922 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 85 states. [2018-07-25 08:52:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:01,348 INFO L93 Difference]: Finished difference Result 333 states and 334 transitions. [2018-07-25 08:52:01,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:52:01,349 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 324 [2018-07-25 08:52:01,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:01,349 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:52:01,349 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:52:01,351 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:52:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:52:01,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2018-07-25 08:52:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:52:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-07-25 08:52:01,485 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 324 [2018-07-25 08:52:01,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:01,485 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-07-25 08:52:01,485 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:52:01,485 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-07-25 08:52:01,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:52:01,486 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:01,486 INFO L354 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 1, 1, 1, 1] [2018-07-25 08:52:01,487 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:01,487 INFO L82 PathProgramCache]: Analyzing trace with hash -317071349, now seen corresponding path program 159 times [2018-07-25 08:52:01,487 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 6480 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:02,528 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:02,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:52:02,529 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:52:02,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:52:02,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6805, Invalid=19927, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:52:02,532 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 164 states. [2018-07-25 08:52:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:03,749 INFO L93 Difference]: Finished difference Result 494 states and 496 transitions. [2018-07-25 08:52:03,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:52:03,750 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 08:52:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:03,750 INFO L225 Difference]: With dead ends: 494 [2018-07-25 08:52:03,750 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 08:52:03,754 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9640 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=13609, Invalid=46171, Unknown=0, NotChecked=0, Total=59780 [2018-07-25 08:52:03,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 08:52:03,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 08:52:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:52:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2018-07-25 08:52:03,873 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 326 [2018-07-25 08:52:03,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:03,873 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2018-07-25 08:52:03,873 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:52:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2018-07-25 08:52:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:52:03,875 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:03,875 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 81, 80, 1, 1, 1, 1] [2018-07-25 08:52:03,875 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:03,875 INFO L82 PathProgramCache]: Analyzing trace with hash -117883067, now seen corresponding path program 160 times [2018-07-25 08:52:03,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 13122 backedges. 6642 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:04,317 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:04,318 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:52:04,318 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:52:04,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:52:04,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:52:04,319 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand 86 states. [2018-07-25 08:52:04,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:04,705 INFO L93 Difference]: Finished difference Result 337 states and 338 transitions. [2018-07-25 08:52:04,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:52:04,705 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 328 [2018-07-25 08:52:04,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:04,705 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:52:04,706 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:52:04,707 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6724 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10543, Invalid=17513, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:52:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:52:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2018-07-25 08:52:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:52:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-25 08:52:04,828 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 328 [2018-07-25 08:52:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:04,829 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-25 08:52:04,829 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:52:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-25 08:52:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:52:04,830 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:04,830 INFO L354 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-07-25 08:52:04,830 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:04,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1616425345, now seen corresponding path program 161 times [2018-07-25 08:52:04,830 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 6642 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:05,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:05,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:52:05,786 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:52:05,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:52:05,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6971, Invalid=20419, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:52:05,788 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 166 states. [2018-07-25 08:52:07,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:07,696 INFO L93 Difference]: Finished difference Result 500 states and 502 transitions. [2018-07-25 08:52:07,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:52:07,696 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 08:52:07,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:07,696 INFO L225 Difference]: With dead ends: 500 [2018-07-25 08:52:07,697 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 08:52:07,702 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9882 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13941, Invalid=47315, Unknown=0, NotChecked=0, Total=61256 [2018-07-25 08:52:07,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 08:52:07,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 08:52:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:52:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-25 08:52:07,890 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-25 08:52:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:07,890 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-25 08:52:07,890 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:52:07,890 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-25 08:52:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:52:07,891 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:07,891 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 82, 81, 1, 1, 1, 1] [2018-07-25 08:52:07,892 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:07,892 INFO L82 PathProgramCache]: Analyzing trace with hash -504332103, now seen corresponding path program 162 times [2018-07-25 08:52:07,892 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 13448 backedges. 6806 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:08,369 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:08,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:52:08,370 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:52:08,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:52:08,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:52:08,370 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 87 states. [2018-07-25 08:52:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:08,781 INFO L93 Difference]: Finished difference Result 341 states and 342 transitions. [2018-07-25 08:52:08,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:52:08,782 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 332 [2018-07-25 08:52:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:08,782 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:52:08,782 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:52:08,784 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6889 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:52:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:52:08,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2018-07-25 08:52:08,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:52:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-07-25 08:52:08,908 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 332 [2018-07-25 08:52:08,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:08,909 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-07-25 08:52:08,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:52:08,909 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-07-25 08:52:08,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:52:08,910 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:08,910 INFO L354 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 1, 1, 1, 1] [2018-07-25 08:52:08,910 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:08,910 INFO L82 PathProgramCache]: Analyzing trace with hash 668205811, now seen corresponding path program 163 times [2018-07-25 08:52:08,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6806 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:09,869 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:09,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:52:09,870 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:52:09,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:52:09,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7139, Invalid=20917, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:52:09,872 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 168 states. [2018-07-25 08:52:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:11,854 INFO L93 Difference]: Finished difference Result 506 states and 508 transitions. [2018-07-25 08:52:11,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:52:11,855 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 08:52:11,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:11,855 INFO L225 Difference]: With dead ends: 506 [2018-07-25 08:52:11,855 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:52:11,861 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14277, Invalid=48473, Unknown=0, NotChecked=0, Total=62750 [2018-07-25 08:52:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:52:12,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 08:52:12,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:52:12,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-25 08:52:12,052 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 334 [2018-07-25 08:52:12,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:12,053 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-25 08:52:12,053 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:52:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-25 08:52:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:52:12,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:12,054 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 83, 82, 1, 1, 1, 1] [2018-07-25 08:52:12,054 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:12,055 INFO L82 PathProgramCache]: Analyzing trace with hash -513439699, now seen corresponding path program 164 times [2018-07-25 08:52:12,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 13778 backedges. 6972 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:12,467 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:12,467 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:52:12,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:52:12,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:52:12,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:52:12,468 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 88 states. [2018-07-25 08:52:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:12,892 INFO L93 Difference]: Finished difference Result 345 states and 346 transitions. [2018-07-25 08:52:12,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:52:12,892 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 336 [2018-07-25 08:52:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:12,893 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:52:12,893 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:52:12,895 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7056 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:52:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:52:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-07-25 08:52:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:52:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-25 08:52:13,023 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-25 08:52:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:13,023 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-25 08:52:13,023 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:52:13,023 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-25 08:52:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:52:13,024 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:13,025 INFO L354 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-07-25 08:52:13,025 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:13,025 INFO L82 PathProgramCache]: Analyzing trace with hash 505740647, now seen corresponding path program 165 times [2018-07-25 08:52:13,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6972 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:14,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:14,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:52:14,034 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:52:14,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:52:14,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7309, Invalid=21421, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:52:14,036 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 170 states. [2018-07-25 08:52:15,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:15,867 INFO L93 Difference]: Finished difference Result 512 states and 514 transitions. [2018-07-25 08:52:15,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:52:15,867 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 08:52:15,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:15,868 INFO L225 Difference]: With dead ends: 512 [2018-07-25 08:52:15,868 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 08:52:15,869 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10375 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=14617, Invalid=49645, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 08:52:15,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 08:52:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 08:52:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:52:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2018-07-25 08:52:15,996 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 338 [2018-07-25 08:52:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:15,997 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2018-07-25 08:52:15,997 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:52:15,997 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2018-07-25 08:52:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:52:15,998 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:15,998 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 84, 83, 1, 1, 1, 1] [2018-07-25 08:52:15,998 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:15,998 INFO L82 PathProgramCache]: Analyzing trace with hash -56797791, now seen corresponding path program 166 times [2018-07-25 08:52:15,998 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14112 backedges. 7140 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:16,423 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:16,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:52:16,424 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:52:16,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:52:16,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:52:16,425 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand 89 states. [2018-07-25 08:52:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:16,840 INFO L93 Difference]: Finished difference Result 349 states and 350 transitions. [2018-07-25 08:52:16,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:52:16,840 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 340 [2018-07-25 08:52:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:16,841 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:52:16,841 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 08:52:16,842 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:52:16,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 08:52:16,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2018-07-25 08:52:16,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:52:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-07-25 08:52:16,973 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 340 [2018-07-25 08:52:16,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:16,973 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-07-25 08:52:16,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:52:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-07-25 08:52:16,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:52:16,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:16,974 INFO L354 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 1, 1, 1, 1] [2018-07-25 08:52:16,975 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:16,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1251950043, now seen corresponding path program 167 times [2018-07-25 08:52:16,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7140 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:18,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:18,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:52:18,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:52:18,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:52:18,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7481, Invalid=21931, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:52:18,019 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 172 states. [2018-07-25 08:52:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:19,958 INFO L93 Difference]: Finished difference Result 518 states and 520 transitions. [2018-07-25 08:52:19,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:52:19,958 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 08:52:19,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:19,959 INFO L225 Difference]: With dead ends: 518 [2018-07-25 08:52:19,959 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 08:52:19,961 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10626 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14961, Invalid=50831, Unknown=0, NotChecked=0, Total=65792 [2018-07-25 08:52:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 08:52:20,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 08:52:20,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:52:20,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-25 08:52:20,094 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 342 [2018-07-25 08:52:20,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:20,094 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-25 08:52:20,094 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:52:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-25 08:52:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:52:20,095 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:20,095 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 85, 84, 1, 1, 1, 1] [2018-07-25 08:52:20,096 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:20,096 INFO L82 PathProgramCache]: Analyzing trace with hash 140306709, now seen corresponding path program 168 times [2018-07-25 08:52:20,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14450 backedges. 7310 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:20,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:20,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:52:20,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:52:20,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:52:20,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:52:20,554 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 90 states. [2018-07-25 08:52:20,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:20,988 INFO L93 Difference]: Finished difference Result 353 states and 354 transitions. [2018-07-25 08:52:20,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 08:52:20,988 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 344 [2018-07-25 08:52:20,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:20,988 INFO L225 Difference]: With dead ends: 353 [2018-07-25 08:52:20,988 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 08:52:20,990 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:52:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 08:52:21,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 347. [2018-07-25 08:52:21,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:52:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-07-25 08:52:21,123 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 344 [2018-07-25 08:52:21,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:21,123 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-07-25 08:52:21,123 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:52:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-07-25 08:52:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:52:21,124 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:21,124 INFO L354 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-07-25 08:52:21,124 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:21,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1690813519, now seen corresponding path program 169 times [2018-07-25 08:52:21,125 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7310 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:22,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:22,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:52:22,272 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:52:22,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:52:22,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7655, Invalid=22447, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:52:22,275 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 174 states. [2018-07-25 08:52:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:24,211 INFO L93 Difference]: Finished difference Result 524 states and 526 transitions. [2018-07-25 08:52:24,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 08:52:24,211 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-25 08:52:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:24,212 INFO L225 Difference]: With dead ends: 524 [2018-07-25 08:52:24,212 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 08:52:24,215 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10880 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15309, Invalid=52031, Unknown=0, NotChecked=0, Total=67340 [2018-07-25 08:52:24,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 08:52:24,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 08:52:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 08:52:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-25 08:52:24,357 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 346 [2018-07-25 08:52:24,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:24,357 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-25 08:52:24,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 08:52:24,358 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-25 08:52:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 08:52:24,359 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:24,359 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 86, 85, 1, 1, 1, 1] [2018-07-25 08:52:24,359 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:24,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1760117385, now seen corresponding path program 170 times [2018-07-25 08:52:24,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14792 backedges. 7482 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:24,804 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:24,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:52:24,804 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:52:24,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:52:24,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:52:24,805 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 91 states. [2018-07-25 08:52:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:25,268 INFO L93 Difference]: Finished difference Result 357 states and 358 transitions. [2018-07-25 08:52:25,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 08:52:25,269 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 348 [2018-07-25 08:52:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:25,269 INFO L225 Difference]: With dead ends: 357 [2018-07-25 08:52:25,270 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 08:52:25,271 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7569 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:52:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 08:52:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2018-07-25 08:52:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 08:52:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-07-25 08:52:25,412 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 348 [2018-07-25 08:52:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:25,413 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-07-25 08:52:25,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:52:25,413 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-07-25 08:52:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 08:52:25,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:25,414 INFO L354 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 1, 1, 1, 1] [2018-07-25 08:52:25,414 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:25,414 INFO L82 PathProgramCache]: Analyzing trace with hash -744255293, now seen corresponding path program 171 times [2018-07-25 08:52:25,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 7482 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:26,480 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:26,480 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 08:52:26,481 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 08:52:26,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 08:52:26,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7831, Invalid=22969, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 08:52:26,483 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 176 states. [2018-07-25 08:52:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:28,701 INFO L93 Difference]: Finished difference Result 530 states and 532 transitions. [2018-07-25 08:52:28,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 08:52:28,701 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-25 08:52:28,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:28,702 INFO L225 Difference]: With dead ends: 530 [2018-07-25 08:52:28,702 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 08:52:28,705 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11137 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15661, Invalid=53245, Unknown=0, NotChecked=0, Total=68906 [2018-07-25 08:52:28,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 08:52:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 08:52:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 08:52:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2018-07-25 08:52:28,841 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 350 [2018-07-25 08:52:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:28,842 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2018-07-25 08:52:28,842 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 08:52:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2018-07-25 08:52:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 08:52:28,843 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:28,843 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 87, 86, 1, 1, 1, 1] [2018-07-25 08:52:28,843 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:28,843 INFO L82 PathProgramCache]: Analyzing trace with hash -771268099, now seen corresponding path program 172 times [2018-07-25 08:52:28,843 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15138 backedges. 7656 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:29,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:29,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:52:29,292 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:52:29,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:52:29,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:52:29,293 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand 92 states. [2018-07-25 08:52:29,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:29,749 INFO L93 Difference]: Finished difference Result 361 states and 362 transitions. [2018-07-25 08:52:29,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 08:52:29,750 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 352 [2018-07-25 08:52:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:29,750 INFO L225 Difference]: With dead ends: 361 [2018-07-25 08:52:29,750 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 08:52:29,752 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7744 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12106, Invalid=20114, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:52:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 08:52:29,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 355. [2018-07-25 08:52:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 08:52:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-25 08:52:29,892 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 352 [2018-07-25 08:52:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:29,892 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-25 08:52:29,892 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:52:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-25 08:52:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 08:52:29,893 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:29,893 INFO L354 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-07-25 08:52:29,893 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:29,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1840751415, now seen corresponding path program 173 times [2018-07-25 08:52:29,894 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 7656 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:31,110 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:31,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 08:52:31,111 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 08:52:31,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 08:52:31,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8009, Invalid=23497, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 08:52:31,112 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 178 states. [2018-07-25 08:52:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:33,784 INFO L93 Difference]: Finished difference Result 536 states and 538 transitions. [2018-07-25 08:52:33,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 08:52:33,785 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-25 08:52:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:33,785 INFO L225 Difference]: With dead ends: 536 [2018-07-25 08:52:33,785 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 08:52:33,790 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11397 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=16017, Invalid=54473, Unknown=0, NotChecked=0, Total=70490 [2018-07-25 08:52:33,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 08:52:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 08:52:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 08:52:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-25 08:52:33,952 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-25 08:52:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:33,952 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-25 08:52:33,952 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 08:52:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-25 08:52:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 08:52:33,953 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:33,953 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 88, 87, 1, 1, 1, 1] [2018-07-25 08:52:33,953 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash 117196657, now seen corresponding path program 174 times [2018-07-25 08:52:33,954 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 15488 backedges. 7832 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:34,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:34,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:52:34,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:52:34,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:52:34,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:52:34,489 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 93 states. [2018-07-25 08:52:35,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:35,019 INFO L93 Difference]: Finished difference Result 365 states and 366 transitions. [2018-07-25 08:52:35,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 08:52:35,019 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 356 [2018-07-25 08:52:35,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:35,020 INFO L225 Difference]: With dead ends: 365 [2018-07-25 08:52:35,020 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 08:52:35,022 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7921 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:52:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 08:52:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2018-07-25 08:52:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 08:52:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-07-25 08:52:35,184 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 356 [2018-07-25 08:52:35,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:35,184 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-07-25 08:52:35,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:52:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-07-25 08:52:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 08:52:35,186 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:35,186 INFO L354 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 1, 1, 1, 1] [2018-07-25 08:52:35,186 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:35,186 INFO L82 PathProgramCache]: Analyzing trace with hash 956890027, now seen corresponding path program 175 times [2018-07-25 08:52:35,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7832 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:36,483 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:36,483 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 08:52:36,483 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 08:52:36,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 08:52:36,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8189, Invalid=24031, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 08:52:36,485 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 180 states. [2018-07-25 08:52:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:39,244 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2018-07-25 08:52:39,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 08:52:39,244 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-25 08:52:39,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:39,245 INFO L225 Difference]: With dead ends: 542 [2018-07-25 08:52:39,245 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 08:52:39,250 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11660 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=16377, Invalid=55715, Unknown=0, NotChecked=0, Total=72092 [2018-07-25 08:52:39,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 08:52:39,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 08:52:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 08:52:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-25 08:52:39,411 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 358 [2018-07-25 08:52:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:39,412 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-25 08:52:39,412 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 08:52:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-25 08:52:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 08:52:39,413 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:39,413 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 89, 88, 1, 1, 1, 1] [2018-07-25 08:52:39,413 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:39,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1702038811, now seen corresponding path program 176 times [2018-07-25 08:52:39,413 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 15842 backedges. 8010 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:39,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:39,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:52:39,959 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:52:39,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:52:39,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:52:39,960 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 94 states. [2018-07-25 08:52:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:40,530 INFO L93 Difference]: Finished difference Result 369 states and 370 transitions. [2018-07-25 08:52:40,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 08:52:40,530 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 360 [2018-07-25 08:52:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:40,530 INFO L225 Difference]: With dead ends: 369 [2018-07-25 08:52:40,531 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 08:52:40,531 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:52:40,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 08:52:40,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 363. [2018-07-25 08:52:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 08:52:40,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-25 08:52:40,677 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-25 08:52:40,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:40,677 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-25 08:52:40,677 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:52:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-25 08:52:40,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 08:52:40,678 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:40,678 INFO L354 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-07-25 08:52:40,679 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:40,679 INFO L82 PathProgramCache]: Analyzing trace with hash 723294751, now seen corresponding path program 177 times [2018-07-25 08:52:40,679 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8010 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:41,963 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:41,963 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 08:52:41,963 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 08:52:41,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 08:52:41,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8371, Invalid=24571, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 08:52:41,966 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 182 states. [2018-07-25 08:52:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:43,861 INFO L93 Difference]: Finished difference Result 548 states and 550 transitions. [2018-07-25 08:52:43,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 08:52:43,861 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-25 08:52:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:43,862 INFO L225 Difference]: With dead ends: 548 [2018-07-25 08:52:43,862 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 08:52:43,866 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11926 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=16741, Invalid=56971, Unknown=0, NotChecked=0, Total=73712 [2018-07-25 08:52:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 08:52:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 08:52:44,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 08:52:44,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-07-25 08:52:44,012 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 362 [2018-07-25 08:52:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:44,013 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-07-25 08:52:44,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 08:52:44,013 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-07-25 08:52:44,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 08:52:44,014 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:44,014 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 90, 89, 1, 1, 1, 1] [2018-07-25 08:52:44,014 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:44,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1359059879, now seen corresponding path program 178 times [2018-07-25 08:52:44,014 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16200 backedges. 8190 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:44,613 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:44,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:52:44,613 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:52:44,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:52:44,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:52:44,615 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 95 states. [2018-07-25 08:52:45,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:45,115 INFO L93 Difference]: Finished difference Result 373 states and 374 transitions. [2018-07-25 08:52:45,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 08:52:45,115 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 364 [2018-07-25 08:52:45,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:45,116 INFO L225 Difference]: With dead ends: 373 [2018-07-25 08:52:45,116 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 08:52:45,118 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8281 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:52:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 08:52:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2018-07-25 08:52:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 08:52:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-07-25 08:52:45,272 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 364 [2018-07-25 08:52:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:45,273 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-07-25 08:52:45,273 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:52:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-07-25 08:52:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 08:52:45,274 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:45,274 INFO L354 BasicCegarLoop]: trace histogram [91, 91, 90, 90, 1, 1, 1, 1] [2018-07-25 08:52:45,274 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:45,274 INFO L82 PathProgramCache]: Analyzing trace with hash -386433389, now seen corresponding path program 179 times [2018-07-25 08:52:45,274 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16380 backedges. 8190 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:46,470 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:46,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 08:52:46,470 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 08:52:46,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 08:52:46,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8555, Invalid=25117, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 08:52:46,473 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 184 states. [2018-07-25 08:52:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:48,881 INFO L93 Difference]: Finished difference Result 554 states and 556 transitions. [2018-07-25 08:52:48,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 08:52:48,882 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-25 08:52:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:48,882 INFO L225 Difference]: With dead ends: 554 [2018-07-25 08:52:48,882 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 08:52:48,884 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12195 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=17109, Invalid=58241, Unknown=0, NotChecked=0, Total=75350 [2018-07-25 08:52:48,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 08:52:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 08:52:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 08:52:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2018-07-25 08:52:49,035 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 366 [2018-07-25 08:52:49,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:49,035 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2018-07-25 08:52:49,035 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 08:52:49,035 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2018-07-25 08:52:49,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 08:52:49,036 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:49,036 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 91, 90, 1, 1, 1, 1] [2018-07-25 08:52:49,036 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:49,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1240097843, now seen corresponding path program 180 times [2018-07-25 08:52:49,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16562 backedges. 8372 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:49,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:49,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:52:49,538 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:52:49,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:52:49,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:52:49,539 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand 96 states. [2018-07-25 08:52:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:50,026 INFO L93 Difference]: Finished difference Result 377 states and 378 transitions. [2018-07-25 08:52:50,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 08:52:50,027 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 368 [2018-07-25 08:52:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:50,028 INFO L225 Difference]: With dead ends: 377 [2018-07-25 08:52:50,028 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:52:50,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8464 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:52:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:52:50,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 371. [2018-07-25 08:52:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 08:52:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-07-25 08:52:50,186 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 368 [2018-07-25 08:52:50,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:50,186 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-07-25 08:52:50,186 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:52:50,186 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-07-25 08:52:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 08:52:50,187 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:50,187 INFO L354 BasicCegarLoop]: trace histogram [92, 92, 91, 91, 1, 1, 1, 1] [2018-07-25 08:52:50,187 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:50,187 INFO L82 PathProgramCache]: Analyzing trace with hash -2028033785, now seen corresponding path program 181 times [2018-07-25 08:52:50,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8372 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:51,409 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:51,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 08:52:51,409 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 08:52:51,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 08:52:51,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8741, Invalid=25669, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 08:52:51,412 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 186 states. [2018-07-25 08:52:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:53,458 INFO L93 Difference]: Finished difference Result 560 states and 562 transitions. [2018-07-25 08:52:53,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 08:52:53,458 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-25 08:52:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:53,459 INFO L225 Difference]: With dead ends: 560 [2018-07-25 08:52:53,459 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 08:52:53,462 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12467 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=17481, Invalid=59525, Unknown=0, NotChecked=0, Total=77006 [2018-07-25 08:52:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 08:52:53,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 08:52:53,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 08:52:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 374 transitions. [2018-07-25 08:52:53,631 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 374 transitions. Word has length 370 [2018-07-25 08:52:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:53,631 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 374 transitions. [2018-07-25 08:52:53,631 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 08:52:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 374 transitions. [2018-07-25 08:52:53,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 08:52:53,632 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:53,633 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 92, 91, 1, 1, 1, 1] [2018-07-25 08:52:53,633 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:53,633 INFO L82 PathProgramCache]: Analyzing trace with hash 823630145, now seen corresponding path program 182 times [2018-07-25 08:52:53,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16928 backedges. 8556 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:54,224 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:54,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:52:54,225 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:52:54,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:52:54,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:52:54,225 INFO L87 Difference]: Start difference. First operand 373 states and 374 transitions. Second operand 97 states. [2018-07-25 08:52:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:54,804 INFO L93 Difference]: Finished difference Result 381 states and 382 transitions. [2018-07-25 08:52:54,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 08:52:54,805 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 372 [2018-07-25 08:52:54,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:54,805 INFO L225 Difference]: With dead ends: 381 [2018-07-25 08:52:54,806 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 08:52:54,808 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8649 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:52:54,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 08:52:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2018-07-25 08:52:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 08:52:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2018-07-25 08:52:54,983 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 372 [2018-07-25 08:52:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:54,983 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2018-07-25 08:52:54,983 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:52:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2018-07-25 08:52:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 08:52:54,985 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:54,985 INFO L354 BasicCegarLoop]: trace histogram [93, 93, 92, 92, 1, 1, 1, 1] [2018-07-25 08:52:54,985 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:54,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1234639227, now seen corresponding path program 183 times [2018-07-25 08:52:54,985 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:52:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 8556 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:52:56,422 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:52:56,422 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 08:52:56,423 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 08:52:56,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 08:52:56,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8929, Invalid=26227, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 08:52:56,424 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand 188 states. [2018-07-25 08:52:59,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:52:59,427 INFO L93 Difference]: Finished difference Result 566 states and 568 transitions. [2018-07-25 08:52:59,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 08:52:59,427 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-25 08:52:59,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:52:59,428 INFO L225 Difference]: With dead ends: 566 [2018-07-25 08:52:59,428 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 08:52:59,432 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12742 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=17857, Invalid=60823, Unknown=0, NotChecked=0, Total=78680 [2018-07-25 08:52:59,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 08:52:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 08:52:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 08:52:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2018-07-25 08:52:59,609 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 374 [2018-07-25 08:52:59,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:52:59,609 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2018-07-25 08:52:59,609 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 08:52:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2018-07-25 08:52:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 08:52:59,611 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:52:59,611 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 93, 92, 1, 1, 1, 1] [2018-07-25 08:52:59,611 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:52:59,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1892244661, now seen corresponding path program 184 times [2018-07-25 08:52:59,612 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:52:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 17298 backedges. 8742 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:00,218 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:00,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:53:00,219 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:53:00,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:53:00,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:53:00,220 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand 98 states. [2018-07-25 08:53:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:00,812 INFO L93 Difference]: Finished difference Result 385 states and 386 transitions. [2018-07-25 08:53:00,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 08:53:00,812 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 376 [2018-07-25 08:53:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:00,813 INFO L225 Difference]: With dead ends: 385 [2018-07-25 08:53:00,813 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 08:53:00,815 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8836 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:53:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 08:53:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2018-07-25 08:53:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 08:53:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-07-25 08:53:00,995 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 376 [2018-07-25 08:53:00,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:00,995 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-07-25 08:53:00,996 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:53:00,996 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-07-25 08:53:00,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 08:53:00,997 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:00,997 INFO L354 BasicCegarLoop]: trace histogram [94, 94, 93, 93, 1, 1, 1, 1] [2018-07-25 08:53:00,997 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:00,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1676005359, now seen corresponding path program 185 times [2018-07-25 08:53:00,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 17484 backedges. 8742 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:02,473 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:02,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 08:53:02,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 08:53:02,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 08:53:02,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 08:53:02,476 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 190 states. [2018-07-25 08:53:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:05,301 INFO L93 Difference]: Finished difference Result 572 states and 574 transitions. [2018-07-25 08:53:05,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 08:53:05,301 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-25 08:53:05,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:05,302 INFO L225 Difference]: With dead ends: 572 [2018-07-25 08:53:05,302 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 08:53:05,307 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13020 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=18237, Invalid=62135, Unknown=0, NotChecked=0, Total=80372 [2018-07-25 08:53:05,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 08:53:05,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 08:53:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 08:53:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2018-07-25 08:53:05,487 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 378 [2018-07-25 08:53:05,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:05,488 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2018-07-25 08:53:05,488 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 08:53:05,488 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2018-07-25 08:53:05,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 08:53:05,489 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:05,489 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 94, 93, 1, 1, 1, 1] [2018-07-25 08:53:05,489 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:05,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1433396777, now seen corresponding path program 186 times [2018-07-25 08:53:05,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 8930 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:06,177 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:06,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:53:06,178 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:53:06,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:53:06,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:53:06,179 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand 99 states. [2018-07-25 08:53:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:06,786 INFO L93 Difference]: Finished difference Result 389 states and 390 transitions. [2018-07-25 08:53:06,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 08:53:06,786 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 380 [2018-07-25 08:53:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:06,787 INFO L225 Difference]: With dead ends: 389 [2018-07-25 08:53:06,787 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 08:53:06,789 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9025 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:53:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 08:53:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2018-07-25 08:53:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 08:53:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2018-07-25 08:53:06,973 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 380 [2018-07-25 08:53:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:06,973 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2018-07-25 08:53:06,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:53:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2018-07-25 08:53:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 08:53:06,975 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:06,975 INFO L354 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1] [2018-07-25 08:53:06,975 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:06,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1190146973, now seen corresponding path program 187 times [2018-07-25 08:53:06,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8930 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:08,446 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:08,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 08:53:08,446 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 08:53:08,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 08:53:08,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 08:53:08,449 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand 192 states. [2018-07-25 08:53:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:10,914 INFO L93 Difference]: Finished difference Result 578 states and 580 transitions. [2018-07-25 08:53:10,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 08:53:10,915 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-25 08:53:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:10,915 INFO L225 Difference]: With dead ends: 578 [2018-07-25 08:53:10,915 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 08:53:10,918 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13301 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=18621, Invalid=63461, Unknown=0, NotChecked=0, Total=82082 [2018-07-25 08:53:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 08:53:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 08:53:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 08:53:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2018-07-25 08:53:11,101 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 382 [2018-07-25 08:53:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:11,101 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2018-07-25 08:53:11,101 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 08:53:11,102 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2018-07-25 08:53:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 08:53:11,103 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:11,103 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 95, 94, 1, 1, 1, 1] [2018-07-25 08:53:11,103 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:11,103 INFO L82 PathProgramCache]: Analyzing trace with hash 248526237, now seen corresponding path program 188 times [2018-07-25 08:53:11,103 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18050 backedges. 9120 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:11,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:11,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:53:11,733 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:53:11,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:53:11,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:53:11,734 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand 100 states. [2018-07-25 08:53:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:12,381 INFO L93 Difference]: Finished difference Result 393 states and 394 transitions. [2018-07-25 08:53:12,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 08:53:12,381 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 384 [2018-07-25 08:53:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:12,381 INFO L225 Difference]: With dead ends: 393 [2018-07-25 08:53:12,382 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 08:53:12,384 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:53:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 08:53:12,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 387. [2018-07-25 08:53:12,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:53:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-07-25 08:53:12,572 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 384 [2018-07-25 08:53:12,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:12,573 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-07-25 08:53:12,573 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:53:12,573 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-07-25 08:53:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 08:53:12,575 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:12,575 INFO L354 BasicCegarLoop]: trace histogram [96, 96, 95, 95, 1, 1, 1, 1] [2018-07-25 08:53:12,575 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:12,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1684402473, now seen corresponding path program 189 times [2018-07-25 08:53:12,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 9120 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:14,120 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:14,120 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 08:53:14,121 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 08:53:14,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 08:53:14,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9505, Invalid=27937, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 08:53:14,122 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 194 states. [2018-07-25 08:53:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:15,839 INFO L93 Difference]: Finished difference Result 584 states and 586 transitions. [2018-07-25 08:53:15,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 08:53:15,839 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-25 08:53:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:15,840 INFO L225 Difference]: With dead ends: 584 [2018-07-25 08:53:15,840 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 08:53:15,843 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13585 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=19009, Invalid=64801, Unknown=0, NotChecked=0, Total=83810 [2018-07-25 08:53:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 08:53:16,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 08:53:16,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 08:53:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2018-07-25 08:53:16,010 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 386 [2018-07-25 08:53:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:16,010 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2018-07-25 08:53:16,010 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 08:53:16,010 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2018-07-25 08:53:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 08:53:16,011 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:16,012 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 96, 95, 1, 1, 1, 1] [2018-07-25 08:53:16,012 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:16,012 INFO L82 PathProgramCache]: Analyzing trace with hash -600880367, now seen corresponding path program 190 times [2018-07-25 08:53:16,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18432 backedges. 9312 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:16,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:16,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:53:16,631 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:53:16,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:53:16,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:53:16,632 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand 101 states. [2018-07-25 08:53:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:17,209 INFO L93 Difference]: Finished difference Result 397 states and 398 transitions. [2018-07-25 08:53:17,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 08:53:17,209 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 388 [2018-07-25 08:53:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:17,210 INFO L225 Difference]: With dead ends: 397 [2018-07-25 08:53:17,210 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 08:53:17,212 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9409 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:53:17,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 08:53:17,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2018-07-25 08:53:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:53:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2018-07-25 08:53:17,383 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 388 [2018-07-25 08:53:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:17,384 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2018-07-25 08:53:17,384 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:53:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2018-07-25 08:53:17,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 08:53:17,386 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:17,386 INFO L354 BasicCegarLoop]: trace histogram [97, 97, 96, 96, 1, 1, 1, 1] [2018-07-25 08:53:17,386 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:17,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1920362677, now seen corresponding path program 191 times [2018-07-25 08:53:17,386 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18624 backedges. 9312 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:18,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:18,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 08:53:18,775 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 08:53:18,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 08:53:18,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9701, Invalid=28519, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 08:53:18,777 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand 196 states. [2018-07-25 08:53:20,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:20,954 INFO L93 Difference]: Finished difference Result 590 states and 592 transitions. [2018-07-25 08:53:20,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 08:53:20,954 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-25 08:53:20,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:20,955 INFO L225 Difference]: With dead ends: 590 [2018-07-25 08:53:20,955 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 08:53:20,959 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13872 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=19401, Invalid=66155, Unknown=0, NotChecked=0, Total=85556 [2018-07-25 08:53:20,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 08:53:21,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 08:53:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 08:53:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2018-07-25 08:53:21,129 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 390 [2018-07-25 08:53:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:21,130 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2018-07-25 08:53:21,130 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 08:53:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2018-07-25 08:53:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 08:53:21,131 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:21,131 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 97, 96, 1, 1, 1, 1] [2018-07-25 08:53:21,131 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash -867031419, now seen corresponding path program 192 times [2018-07-25 08:53:21,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 18818 backedges. 9506 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:21,788 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:21,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:53:21,789 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:53:21,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:53:21,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:53:21,790 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand 102 states. [2018-07-25 08:53:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:22,393 INFO L93 Difference]: Finished difference Result 401 states and 402 transitions. [2018-07-25 08:53:22,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 08:53:22,394 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 392 [2018-07-25 08:53:22,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:22,394 INFO L225 Difference]: With dead ends: 401 [2018-07-25 08:53:22,394 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 08:53:22,396 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9604 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:53:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 08:53:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 395. [2018-07-25 08:53:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 08:53:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-07-25 08:53:22,570 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 392 [2018-07-25 08:53:22,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:22,570 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-07-25 08:53:22,570 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:53:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-07-25 08:53:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 08:53:22,571 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:22,572 INFO L354 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 1, 1, 1, 1] [2018-07-25 08:53:22,572 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:22,572 INFO L82 PathProgramCache]: Analyzing trace with hash 6514111, now seen corresponding path program 193 times [2018-07-25 08:53:22,572 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9506 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:23,977 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:23,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 08:53:23,978 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 08:53:23,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 08:53:23,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9899, Invalid=29107, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 08:53:23,980 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 198 states. [2018-07-25 08:53:26,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:26,278 INFO L93 Difference]: Finished difference Result 596 states and 598 transitions. [2018-07-25 08:53:26,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 08:53:26,278 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-25 08:53:26,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:26,279 INFO L225 Difference]: With dead ends: 596 [2018-07-25 08:53:26,279 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 08:53:26,282 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14162 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=19797, Invalid=67523, Unknown=0, NotChecked=0, Total=87320 [2018-07-25 08:53:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 08:53:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 08:53:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 08:53:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2018-07-25 08:53:26,467 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 394 [2018-07-25 08:53:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:26,467 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2018-07-25 08:53:26,467 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 08:53:26,467 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2018-07-25 08:53:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 08:53:26,469 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:26,469 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 98, 97, 1, 1, 1, 1] [2018-07-25 08:53:26,469 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:26,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2105395193, now seen corresponding path program 194 times [2018-07-25 08:53:26,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 19208 backedges. 9702 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:27,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:27,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:53:27,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:53:27,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:53:27,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:53:27,097 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand 103 states. [2018-07-25 08:53:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:27,696 INFO L93 Difference]: Finished difference Result 405 states and 406 transitions. [2018-07-25 08:53:27,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 08:53:27,696 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 396 [2018-07-25 08:53:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:27,697 INFO L225 Difference]: With dead ends: 405 [2018-07-25 08:53:27,697 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 08:53:27,700 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9801 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:53:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 08:53:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2018-07-25 08:53:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 08:53:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2018-07-25 08:53:27,900 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 396 [2018-07-25 08:53:27,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:27,901 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2018-07-25 08:53:27,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:53:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2018-07-25 08:53:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 08:53:27,902 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:27,902 INFO L354 BasicCegarLoop]: trace histogram [99, 99, 98, 98, 1, 1, 1, 1] [2018-07-25 08:53:27,902 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:27,902 INFO L82 PathProgramCache]: Analyzing trace with hash 355236403, now seen corresponding path program 195 times [2018-07-25 08:53:27,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 9702 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:29,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:29,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 08:53:29,447 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 08:53:29,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 08:53:29,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 08:53:29,449 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand 200 states. [2018-07-25 08:53:32,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:32,062 INFO L93 Difference]: Finished difference Result 602 states and 604 transitions. [2018-07-25 08:53:32,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 08:53:32,063 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-25 08:53:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:32,063 INFO L225 Difference]: With dead ends: 602 [2018-07-25 08:53:32,063 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 08:53:32,069 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14455 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=20197, Invalid=68905, Unknown=0, NotChecked=0, Total=89102 [2018-07-25 08:53:32,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 08:53:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 08:53:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 08:53:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2018-07-25 08:53:32,269 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 398 [2018-07-25 08:53:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:32,269 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2018-07-25 08:53:32,269 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 08:53:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2018-07-25 08:53:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 08:53:32,271 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:32,271 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 99, 98, 1, 1, 1, 1] [2018-07-25 08:53:32,271 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:32,271 INFO L82 PathProgramCache]: Analyzing trace with hash -579391635, now seen corresponding path program 196 times [2018-07-25 08:53:32,271 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 9900 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:33,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:33,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:53:33,023 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:53:33,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:53:33,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:53:33,024 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand 104 states. [2018-07-25 08:53:33,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:33,674 INFO L93 Difference]: Finished difference Result 409 states and 410 transitions. [2018-07-25 08:53:33,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 08:53:33,674 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 400 [2018-07-25 08:53:33,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:33,675 INFO L225 Difference]: With dead ends: 409 [2018-07-25 08:53:33,675 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 08:53:33,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10000 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:53:33,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 08:53:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 403. [2018-07-25 08:53:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 08:53:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-07-25 08:53:33,861 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 400 [2018-07-25 08:53:33,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:33,861 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-07-25 08:53:33,861 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:53:33,862 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-07-25 08:53:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 08:53:33,863 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:33,863 INFO L354 BasicCegarLoop]: trace histogram [100, 100, 99, 99, 1, 1, 1, 1] [2018-07-25 08:53:33,863 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:33,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1550439591, now seen corresponding path program 197 times [2018-07-25 08:53:33,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 19800 backedges. 9900 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:35,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:35,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 08:53:35,306 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 08:53:35,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 08:53:35,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10301, Invalid=30301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 08:53:35,309 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 202 states. [2018-07-25 08:53:37,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:37,794 INFO L93 Difference]: Finished difference Result 608 states and 610 transitions. [2018-07-25 08:53:37,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 08:53:37,794 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-25 08:53:37,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:37,795 INFO L225 Difference]: With dead ends: 608 [2018-07-25 08:53:37,795 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 08:53:37,797 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14751 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=20601, Invalid=70301, Unknown=0, NotChecked=0, Total=90902 [2018-07-25 08:53:37,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 08:53:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 08:53:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 08:53:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 406 transitions. [2018-07-25 08:53:37,999 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 406 transitions. Word has length 402 [2018-07-25 08:53:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:37,999 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 406 transitions. [2018-07-25 08:53:37,999 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 08:53:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 406 transitions. [2018-07-25 08:53:38,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 08:53:38,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:38,001 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 100, 99, 1, 1, 1, 1] [2018-07-25 08:53:38,001 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:38,001 INFO L82 PathProgramCache]: Analyzing trace with hash -377266975, now seen corresponding path program 198 times [2018-07-25 08:53:38,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 20000 backedges. 10100 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:38,707 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:38,707 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:53:38,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:53:38,708 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:53:38,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:53:38,708 INFO L87 Difference]: Start difference. First operand 405 states and 406 transitions. Second operand 105 states. [2018-07-25 08:53:39,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:39,410 INFO L93 Difference]: Finished difference Result 413 states and 414 transitions. [2018-07-25 08:53:39,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 08:53:39,410 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 404 [2018-07-25 08:53:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:39,411 INFO L225 Difference]: With dead ends: 413 [2018-07-25 08:53:39,411 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 08:53:39,414 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:53:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 08:53:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2018-07-25 08:53:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 08:53:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2018-07-25 08:53:39,619 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 404 [2018-07-25 08:53:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:39,619 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2018-07-25 08:53:39,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:53:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2018-07-25 08:53:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 08:53:39,621 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:39,621 INFO L354 BasicCegarLoop]: trace histogram [101, 101, 100, 100, 1, 1, 1, 1] [2018-07-25 08:53:39,621 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:39,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1776257765, now seen corresponding path program 199 times [2018-07-25 08:53:39,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 20200 backedges. 10100 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:41,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:41,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 08:53:41,320 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 08:53:41,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 08:53:41,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10505, Invalid=30907, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 08:53:41,322 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand 204 states. [2018-07-25 08:53:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:43,744 INFO L93 Difference]: Finished difference Result 614 states and 616 transitions. [2018-07-25 08:53:43,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 08:53:43,745 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-25 08:53:43,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:43,746 INFO L225 Difference]: With dead ends: 614 [2018-07-25 08:53:43,746 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 08:53:43,751 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15050 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=21009, Invalid=71711, Unknown=0, NotChecked=0, Total=92720 [2018-07-25 08:53:43,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 08:53:43,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 08:53:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 08:53:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2018-07-25 08:53:43,950 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 406 [2018-07-25 08:53:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:43,950 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2018-07-25 08:53:43,950 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 08:53:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2018-07-25 08:53:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 08:53:43,951 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:43,951 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 101, 100, 1, 1, 1, 1] [2018-07-25 08:53:43,952 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:43,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1852264533, now seen corresponding path program 200 times [2018-07-25 08:53:43,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 20402 backedges. 10302 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:44,624 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:44,624 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:53:44,624 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:53:44,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:53:44,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:53:44,625 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand 106 states. [2018-07-25 08:53:45,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:45,277 INFO L93 Difference]: Finished difference Result 417 states and 418 transitions. [2018-07-25 08:53:45,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 08:53:45,277 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 408 [2018-07-25 08:53:45,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:45,278 INFO L225 Difference]: With dead ends: 417 [2018-07-25 08:53:45,278 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 08:53:45,280 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10404 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:53:45,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 08:53:45,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 411. [2018-07-25 08:53:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:53:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-07-25 08:53:45,472 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 408 [2018-07-25 08:53:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:45,473 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-07-25 08:53:45,473 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:53:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-07-25 08:53:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 08:53:45,474 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:45,474 INFO L354 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 1, 1, 1, 1] [2018-07-25 08:53:45,474 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1909808015, now seen corresponding path program 201 times [2018-07-25 08:53:45,475 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10302 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:47,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:47,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 08:53:47,008 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 08:53:47,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 08:53:47,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10711, Invalid=31519, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 08:53:47,012 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 206 states. [2018-07-25 08:53:49,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:49,417 INFO L93 Difference]: Finished difference Result 620 states and 622 transitions. [2018-07-25 08:53:49,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 08:53:49,417 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-25 08:53:49,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:49,417 INFO L225 Difference]: With dead ends: 620 [2018-07-25 08:53:49,418 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 08:53:49,420 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15352 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=21421, Invalid=73135, Unknown=0, NotChecked=0, Total=94556 [2018-07-25 08:53:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 08:53:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 08:53:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 08:53:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2018-07-25 08:53:49,624 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 410 [2018-07-25 08:53:49,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:49,624 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2018-07-25 08:53:49,624 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 08:53:49,624 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2018-07-25 08:53:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 08:53:49,626 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:49,626 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 102, 101, 1, 1, 1, 1] [2018-07-25 08:53:49,626 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:49,627 INFO L82 PathProgramCache]: Analyzing trace with hash -932705847, now seen corresponding path program 202 times [2018-07-25 08:53:49,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 10506 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:50,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:50,310 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:53:50,310 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:53:50,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:53:50,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:53:50,311 INFO L87 Difference]: Start difference. First operand 413 states and 414 transitions. Second operand 107 states. [2018-07-25 08:53:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:50,960 INFO L93 Difference]: Finished difference Result 421 states and 422 transitions. [2018-07-25 08:53:50,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 08:53:50,960 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 412 [2018-07-25 08:53:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:50,961 INFO L225 Difference]: With dead ends: 421 [2018-07-25 08:53:50,961 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 08:53:50,963 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10609 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16486, Invalid=27404, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:53:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 08:53:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2018-07-25 08:53:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 08:53:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2018-07-25 08:53:51,156 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 412 [2018-07-25 08:53:51,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:51,156 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2018-07-25 08:53:51,156 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:53:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2018-07-25 08:53:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 08:53:51,157 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:51,157 INFO L354 BasicCegarLoop]: trace histogram [103, 103, 102, 102, 1, 1, 1, 1] [2018-07-25 08:53:51,157 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:51,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1317898243, now seen corresponding path program 203 times [2018-07-25 08:53:51,158 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10506 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:52,761 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:52,761 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 08:53:52,761 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 08:53:52,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 08:53:52,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10919, Invalid=32137, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 08:53:52,763 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand 208 states. [2018-07-25 08:53:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:55,195 INFO L93 Difference]: Finished difference Result 626 states and 628 transitions. [2018-07-25 08:53:55,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 08:53:55,195 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-25 08:53:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:55,196 INFO L225 Difference]: With dead ends: 626 [2018-07-25 08:53:55,196 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 08:53:55,200 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15657 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=21837, Invalid=74573, Unknown=0, NotChecked=0, Total=96410 [2018-07-25 08:53:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 08:53:55,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 08:53:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 08:53:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2018-07-25 08:53:55,395 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 414 [2018-07-25 08:53:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:55,395 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2018-07-25 08:53:55,395 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 08:53:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2018-07-25 08:53:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 08:53:55,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:55,397 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 103, 102, 1, 1, 1, 1] [2018-07-25 08:53:55,397 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:55,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1555396291, now seen corresponding path program 204 times [2018-07-25 08:53:55,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 21218 backedges. 10712 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:56,113 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:56,113 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:53:56,114 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:53:56,114 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:53:56,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:53:56,114 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand 108 states. [2018-07-25 08:53:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:53:56,754 INFO L93 Difference]: Finished difference Result 425 states and 426 transitions. [2018-07-25 08:53:56,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 08:53:56,754 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 416 [2018-07-25 08:53:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:53:56,755 INFO L225 Difference]: With dead ends: 425 [2018-07-25 08:53:56,755 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 08:53:56,757 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10816 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:53:56,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 08:53:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2018-07-25 08:53:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 08:53:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-07-25 08:53:56,955 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 416 [2018-07-25 08:53:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:53:56,955 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-07-25 08:53:56,955 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:53:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-07-25 08:53:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 08:53:56,956 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:53:56,957 INFO L354 BasicCegarLoop]: trace histogram [104, 104, 103, 103, 1, 1, 1, 1] [2018-07-25 08:53:56,957 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:53:56,957 INFO L82 PathProgramCache]: Analyzing trace with hash -87164297, now seen corresponding path program 205 times [2018-07-25 08:53:56,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:53:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:53:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 10712 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:53:58,704 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:53:58,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 08:53:58,704 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 08:53:58,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 08:53:58,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11129, Invalid=32761, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 08:53:58,707 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 210 states. [2018-07-25 08:54:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:01,129 INFO L93 Difference]: Finished difference Result 632 states and 634 transitions. [2018-07-25 08:54:01,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 08:54:01,129 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-25 08:54:01,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:01,130 INFO L225 Difference]: With dead ends: 632 [2018-07-25 08:54:01,130 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 08:54:01,134 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15965 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=22257, Invalid=76025, Unknown=0, NotChecked=0, Total=98282 [2018-07-25 08:54:01,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 08:54:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 08:54:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 08:54:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2018-07-25 08:54:01,355 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 418 [2018-07-25 08:54:01,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:01,356 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2018-07-25 08:54:01,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 08:54:01,356 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2018-07-25 08:54:01,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 08:54:01,357 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:01,357 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 104, 103, 1, 1, 1, 1] [2018-07-25 08:54:01,357 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:01,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1168912719, now seen corresponding path program 206 times [2018-07-25 08:54:01,358 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 21632 backedges. 10920 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:02,124 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:02,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:54:02,124 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:54:02,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:54:02,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:54:02,126 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand 109 states. [2018-07-25 08:54:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:02,910 INFO L93 Difference]: Finished difference Result 429 states and 430 transitions. [2018-07-25 08:54:02,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 08:54:02,910 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 420 [2018-07-25 08:54:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:02,911 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:54:02,911 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 08:54:02,914 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 08:54:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 08:54:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2018-07-25 08:54:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 08:54:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2018-07-25 08:54:03,119 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 420 [2018-07-25 08:54:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:03,119 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2018-07-25 08:54:03,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:54:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2018-07-25 08:54:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 08:54:03,121 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:03,121 INFO L354 BasicCegarLoop]: trace histogram [105, 105, 104, 104, 1, 1, 1, 1] [2018-07-25 08:54:03,121 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:03,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1956360939, now seen corresponding path program 207 times [2018-07-25 08:54:03,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 10920 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:04,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:04,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 08:54:04,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 08:54:04,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 08:54:04,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11341, Invalid=33391, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 08:54:04,936 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand 212 states. [2018-07-25 08:54:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:06,872 INFO L93 Difference]: Finished difference Result 638 states and 640 transitions. [2018-07-25 08:54:06,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 08:54:06,872 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-25 08:54:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:06,873 INFO L225 Difference]: With dead ends: 638 [2018-07-25 08:54:06,873 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 08:54:06,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16276 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=22681, Invalid=77491, Unknown=0, NotChecked=0, Total=100172 [2018-07-25 08:54:06,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 08:54:07,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 08:54:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 08:54:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2018-07-25 08:54:07,077 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 422 [2018-07-25 08:54:07,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:07,077 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2018-07-25 08:54:07,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 08:54:07,077 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2018-07-25 08:54:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 08:54:07,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:07,079 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 105, 104, 1, 1, 1, 1] [2018-07-25 08:54:07,079 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:07,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1740056027, now seen corresponding path program 208 times [2018-07-25 08:54:07,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:54:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22050 backedges. 11130 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:54:07,832 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:54:07,832 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:54:07,832 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:54:07,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:54:07,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:54:07,833 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand 110 states. [2018-07-25 08:54:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:54:08,527 INFO L93 Difference]: Finished difference Result 433 states and 434 transitions. [2018-07-25 08:54:08,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 08:54:08,527 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 424 [2018-07-25 08:54:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:54:08,528 INFO L225 Difference]: With dead ends: 433 [2018-07-25 08:54:08,528 INFO L226 Difference]: Without dead ends: 431 [2018-07-25 08:54:08,531 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17443, Invalid=28997, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 08:54:08,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-25 08:54:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 427. [2018-07-25 08:54:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 08:54:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-07-25 08:54:08,738 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 424 [2018-07-25 08:54:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:54:08,739 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-07-25 08:54:08,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:54:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-07-25 08:54:08,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 08:54:08,740 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:54:08,740 INFO L354 BasicCegarLoop]: trace histogram [106, 106, 105, 105, 1, 1, 1, 1] [2018-07-25 08:54:08,740 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:54:08,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1451511457, now seen corresponding path program 209 times [2018-07-25 08:54:08,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:54:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 08:54:09,498 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:54:09,507 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:54:09,507 INFO L202 PluginConnector]: Adding new model seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:54:09 BoogieIcfgContainer [2018-07-25 08:54:09,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:54:09,510 INFO L168 Benchmark]: Toolchain (without parser) took 254021.04 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -17.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-25 08:54:09,512 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 08:54:09,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.04 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 08:54:09,512 INFO L168 Benchmark]: Boogie Preprocessor took 26.70 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 08:54:09,513 INFO L168 Benchmark]: RCFGBuilder took 243.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:54:09,513 INFO L168 Benchmark]: TraceAbstraction took 253700.42 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -28.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-25 08:54:09,515 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 45.04 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 26.70 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 243.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253700.42 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -28.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 80). Cancelled while BasicCegarLoop was analyzing trace of length 427 with TraceHistMax 106, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 131 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 253.6s OverallTime, 211 OverallIterations, 106 TraceHistogramMax, 139.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6512 SDtfs, 3152 SDslu, 29481 SDs, 0 SdLazy, 393717 SolverSat, 21041 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33914 GetRequests, 5670 SyntacticMatches, 0 SemanticMatches, 28244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975938 ImplicationChecksByTransitivity, 102.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred in iteration=210, 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: 17.2s AutomataMinimizationTime, 210 MinimizatonAttempts, 420 StatesRemovedByMinimization, 105 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 17.3s SatisfiabilityAnalysisTime, 64.9s InterpolantComputationTime, 45150 NumberOfCodeBlocks, 45150 NumberOfCodeBlocksAsserted, 210 NumberOfCheckSat, 44940 ConstructedInterpolants, 0 QuantifiedInterpolants, 56900802 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 210 InterpolantComputations, 2 PerfectInterpolantSequences, 782810/1554490 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/seq.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-54-09-525.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/seq.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-54-09-525.csv Completed graceful shutdown