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 13:29:13,198 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:29:13,200 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:29:13,216 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:29:13,217 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:29:13,218 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:29:13,220 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:29:13,222 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:29:13,224 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:29:13,225 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:29:13,226 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:29:13,227 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:29:13,228 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:29:13,229 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:29:13,231 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:29:13,232 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:29:13,240 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:29:13,242 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:29:13,247 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:29:13,251 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:29:13,253 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:29:13,255 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:29:13,258 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:29:13,258 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:29:13,261 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:29:13,262 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:29:13,263 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:29:13,263 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:29:13,264 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:29:13,267 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:29:13,268 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:29:13,270 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:29:13,273 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:29:13,280 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:29:13,281 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:29:13,282 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:29:13,282 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:29:13,282 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:29:13,283 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:29:13,283 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:29:13,283 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:29:13,326 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:29:13,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:29:13,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:29:13,344 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:29:13,345 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:29:13,346 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/seq.i_4.bpl [2018-07-25 13:29:13,346 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/seq.i_4.bpl' [2018-07-25 13:29:13,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:29:13,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:29:13,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:29:13,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:29:13,401 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:29:13,421 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 01:29:13" (1/1) ... [2018-07-25 13:29:13,434 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 01:29:13" (1/1) ... [2018-07-25 13:29:13,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:29:13,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:29:13,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:29:13,442 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:29:13,453 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 01:29:13" (1/1) ... [2018-07-25 13:29:13,454 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 01:29:13" (1/1) ... [2018-07-25 13:29:13,455 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 01:29:13" (1/1) ... [2018-07-25 13:29:13,455 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 01:29:13" (1/1) ... [2018-07-25 13:29:13,458 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 01:29:13" (1/1) ... [2018-07-25 13:29:13,460 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 01:29:13" (1/1) ... [2018-07-25 13:29:13,461 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 01:29:13" (1/1) ... [2018-07-25 13:29:13,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:29:13,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:29:13,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:29:13,464 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:29:13,465 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 01:29:13" (1/1) ... [2018-07-25 13:29:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:29:13,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:29:13,727 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:29:13,728 INFO L202 PluginConnector]: Adding new model seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:29:13 BoogieIcfgContainer [2018-07-25 13:29:13,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:29:13,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:29:13,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:29:13,734 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:29:13,735 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 01:29:13" (1/2) ... [2018-07-25 13:29:13,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72777a5c and model type seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:29:13, skipping insertion in model container [2018-07-25 13:29:13,737 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 01:29:13" (2/2) ... [2018-07-25 13:29:13,739 INFO L112 eAbstractionObserver]: Analyzing ICFG seq.i_4.bpl [2018-07-25 13:29:13,751 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:29:13,759 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:29:13,812 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:29:13,813 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:29:13,813 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:29:13,814 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:29:13,814 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:29:13,814 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:29:13,814 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:29:13,815 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:29:13,815 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:29:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2018-07-25 13:29:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:29:13,851 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:13,852 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-07-25 13:29:13,853 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:13,860 INFO L82 PathProgramCache]: Analyzing trace with hash 889539531, now seen corresponding path program 1 times [2018-07-25 13:29:13,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:13,992 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 13:29:13,995 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:29:13,996 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:29:14,006 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:29:14,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:29:14,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:29:14,025 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 4 states. [2018-07-25 13:29:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:14,081 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2018-07-25 13:29:14,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:29:14,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 13:29:14,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:14,095 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:29:14,096 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 13:29:14,099 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 13:29:14,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 13:29:14,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 13:29:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:29:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 13:29:14,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-07-25 13:29:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:14,136 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 13:29:14,136 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:29:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 13:29:14,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:29:14,138 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:14,138 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:29:14,138 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:14,139 INFO L82 PathProgramCache]: Analyzing trace with hash 198621957, now seen corresponding path program 1 times [2018-07-25 13:29:14,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:14,176 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 13:29:14,177 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:29:14,177 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 13:29:14,179 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:29:14,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:29:14,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:29:14,181 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2018-07-25 13:29:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:14,223 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-07-25 13:29:14,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:29:14,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 13:29:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:14,225 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:29:14,225 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 13:29:14,226 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 13:29:14,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 13:29:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2018-07-25 13:29:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 13:29:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 13:29:14,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 13:29:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:14,232 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 13:29:14,232 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:29:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 13:29:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:29:14,233 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:14,233 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:29:14,233 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:14,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1897191999, now seen corresponding path program 1 times [2018-07-25 13:29:14,234 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:14,284 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 13:29:14,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:14,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:29:14,285 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:29:14,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:29:14,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:29:14,287 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-25 13:29:14,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:14,348 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-07-25 13:29:14,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:29:14,348 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 13:29:14,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:14,349 INFO L225 Difference]: With dead ends: 20 [2018-07-25 13:29:14,349 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 13:29:14,350 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 13:29:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 13:29:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 13:29:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 13:29:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 13:29:14,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-25 13:29:14,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:14,356 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 13:29:14,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:29:14,356 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 13:29:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 13:29:14,357 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:14,357 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-07-25 13:29:14,358 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:14,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1765270407, now seen corresponding path program 2 times [2018-07-25 13:29:14,358 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:14,468 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 13:29:14,470 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:14,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:29:14,471 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:29:14,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:29:14,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:29:14,472 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-07-25 13:29:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:14,540 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-07-25 13:29:14,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:29:14,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 13:29:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:14,541 INFO L225 Difference]: With dead ends: 21 [2018-07-25 13:29:14,542 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 13:29:14,542 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 13:29:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 13:29:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-07-25 13:29:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 13:29:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-07-25 13:29:14,554 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-07-25 13:29:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:14,555 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-07-25 13:29:14,555 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:29:14,556 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-07-25 13:29:14,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:29:14,557 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:14,557 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-07-25 13:29:14,558 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:14,558 INFO L82 PathProgramCache]: Analyzing trace with hash 87273139, now seen corresponding path program 3 times [2018-07-25 13:29:14,558 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:14,632 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 13:29:14,633 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:14,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:29:14,634 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:29:14,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:29:14,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:29:14,635 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-07-25 13:29:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:14,719 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-07-25 13:29:14,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:29:14,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 13:29:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:14,721 INFO L225 Difference]: With dead ends: 26 [2018-07-25 13:29:14,721 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 13:29:14,722 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 13:29:14,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 13:29:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 13:29:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 13:29:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-25 13:29:14,739 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-07-25 13:29:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:14,739 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-25 13:29:14,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:29:14,741 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-25 13:29:14,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 13:29:14,741 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:14,742 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2018-07-25 13:29:14,742 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:14,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1096334355, now seen corresponding path program 4 times [2018-07-25 13:29:14,746 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:14,786 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 13:29:14,787 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:14,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:29:14,788 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:29:14,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:29:14,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:29:14,789 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2018-07-25 13:29:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:14,888 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-07-25 13:29:14,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:29:14,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 13:29:14,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:14,890 INFO L225 Difference]: With dead ends: 25 [2018-07-25 13:29:14,894 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 13:29:14,895 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 13:29:14,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 13:29:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-07-25 13:29:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 13:29:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-07-25 13:29:14,908 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-07-25 13:29:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:14,908 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-07-25 13:29:14,910 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:29:14,910 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-07-25 13:29:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:29:14,911 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:14,911 INFO L354 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-07-25 13:29:14,912 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:14,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1310275289, now seen corresponding path program 5 times [2018-07-25 13:29:14,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:14,978 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 13:29:14,978 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:14,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:29:14,979 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:29:14,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:29:14,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:29:14,980 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2018-07-25 13:29:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:15,050 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-07-25 13:29:15,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:29:15,050 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 13:29:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:15,056 INFO L225 Difference]: With dead ends: 32 [2018-07-25 13:29:15,057 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 13:29:15,057 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 13:29:15,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 13:29:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 13:29:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 13:29:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-07-25 13:29:15,069 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-07-25 13:29:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:15,070 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-07-25 13:29:15,070 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:29:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-07-25 13:29:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 13:29:15,074 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:15,074 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1] [2018-07-25 13:29:15,074 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:15,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1330040479, now seen corresponding path program 6 times [2018-07-25 13:29:15,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:15,134 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 13:29:15,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:15,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:29:15,135 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:29:15,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:29:15,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:29:15,136 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2018-07-25 13:29:15,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:15,184 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-07-25 13:29:15,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:29:15,184 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-07-25 13:29:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:15,185 INFO L225 Difference]: With dead ends: 29 [2018-07-25 13:29:15,186 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 13:29:15,186 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 13:29:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 13:29:15,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-07-25 13:29:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 13:29:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-07-25 13:29:15,193 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-07-25 13:29:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:15,193 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-07-25 13:29:15,194 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:29:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-07-25 13:29:15,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:29:15,195 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:15,195 INFO L354 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-07-25 13:29:15,195 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:15,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1731406235, now seen corresponding path program 7 times [2018-07-25 13:29:15,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:15,257 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 13:29:15,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:15,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:29:15,259 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:29:15,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:29:15,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:29:15,263 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-07-25 13:29:15,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:15,344 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-07-25 13:29:15,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:29:15,345 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 13:29:15,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:15,346 INFO L225 Difference]: With dead ends: 38 [2018-07-25 13:29:15,346 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 13:29:15,347 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 13:29:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 13:29:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 13:29:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 13:29:15,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-07-25 13:29:15,355 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2018-07-25 13:29:15,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:15,358 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-07-25 13:29:15,358 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:29:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-07-25 13:29:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 13:29:15,360 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:15,360 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1] [2018-07-25 13:29:15,361 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:15,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1774380245, now seen corresponding path program 8 times [2018-07-25 13:29:15,361 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:15,434 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 13:29:15,434 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:15,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:29:15,435 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:29:15,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:29:15,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:29:15,439 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 10 states. [2018-07-25 13:29:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:15,506 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-07-25 13:29:15,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:29:15,513 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-07-25 13:29:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:15,514 INFO L225 Difference]: With dead ends: 33 [2018-07-25 13:29:15,514 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 13:29:15,519 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 13:29:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 13:29:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-07-25 13:29:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 13:29:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-07-25 13:29:15,535 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-07-25 13:29:15,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:15,535 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-07-25 13:29:15,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:29:15,535 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-07-25 13:29:15,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:29:15,536 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:15,536 INFO L354 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-07-25 13:29:15,537 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:15,537 INFO L82 PathProgramCache]: Analyzing trace with hash 77451279, now seen corresponding path program 9 times [2018-07-25 13:29:15,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:15,598 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 13:29:15,599 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:15,599 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:29:15,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:29:15,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:29:15,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:29:15,600 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2018-07-25 13:29:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:15,679 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-07-25 13:29:15,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:29:15,679 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 13:29:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:15,680 INFO L225 Difference]: With dead ends: 44 [2018-07-25 13:29:15,680 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 13:29:15,681 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 13:29:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 13:29:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 13:29:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 13:29:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-07-25 13:29:15,693 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-07-25 13:29:15,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:15,694 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-07-25 13:29:15,694 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:29:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-07-25 13:29:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 13:29:15,697 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:15,697 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1] [2018-07-25 13:29:15,698 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:15,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1980325449, now seen corresponding path program 10 times [2018-07-25 13:29:15,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:15,757 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 13:29:15,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:15,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:29:15,758 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:29:15,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:29:15,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:29:15,761 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2018-07-25 13:29:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:15,830 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-07-25 13:29:15,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:29:15,830 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-07-25 13:29:15,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:15,832 INFO L225 Difference]: With dead ends: 37 [2018-07-25 13:29:15,833 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 13:29:15,833 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 13:29:15,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 13:29:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-07-25 13:29:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 13:29:15,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-07-25 13:29:15,844 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2018-07-25 13:29:15,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:15,845 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-07-25 13:29:15,845 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:29:15,845 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-07-25 13:29:15,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 13:29:15,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:15,846 INFO L354 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-07-25 13:29:15,847 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:15,847 INFO L82 PathProgramCache]: Analyzing trace with hash 422296707, now seen corresponding path program 11 times [2018-07-25 13:29:15,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:15,924 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 13:29:15,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:15,924 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:29:15,925 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:29:15,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:29:15,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:29:15,926 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 16 states. [2018-07-25 13:29:16,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:16,022 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-07-25 13:29:16,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:29:16,022 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 13:29:16,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:16,023 INFO L225 Difference]: With dead ends: 50 [2018-07-25 13:29:16,023 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 13:29:16,028 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 13:29:16,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 13:29:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 13:29:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 13:29:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-07-25 13:29:16,039 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-07-25 13:29:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:16,039 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-07-25 13:29:16,040 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:29:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-07-25 13:29:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 13:29:16,041 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:16,041 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1] [2018-07-25 13:29:16,042 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:16,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1320051267, now seen corresponding path program 12 times [2018-07-25 13:29:16,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:16,126 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 13:29:16,127 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:16,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:29:16,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:29:16,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:29:16,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:29:16,136 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 12 states. [2018-07-25 13:29:16,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:16,206 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-07-25 13:29:16,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:29:16,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-07-25 13:29:16,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:16,207 INFO L225 Difference]: With dead ends: 41 [2018-07-25 13:29:16,207 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 13:29:16,208 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 13:29:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 13:29:16,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-07-25 13:29:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 13:29:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-07-25 13:29:16,218 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-07-25 13:29:16,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:16,218 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-07-25 13:29:16,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:29:16,219 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-07-25 13:29:16,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 13:29:16,219 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:16,220 INFO L354 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-07-25 13:29:16,220 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:16,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1553862921, now seen corresponding path program 13 times [2018-07-25 13:29:16,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:16,301 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 13:29:16,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:16,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:29:16,302 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:29:16,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:29:16,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:29:16,304 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 18 states. [2018-07-25 13:29:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:16,428 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-07-25 13:29:16,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:29:16,428 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 13:29:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:16,429 INFO L225 Difference]: With dead ends: 56 [2018-07-25 13:29:16,432 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 13:29:16,433 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:29:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 13:29:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 13:29:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 13:29:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-07-25 13:29:16,444 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-07-25 13:29:16,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:16,445 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-07-25 13:29:16,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:29:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-07-25 13:29:16,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 13:29:16,446 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:16,446 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1] [2018-07-25 13:29:16,449 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:16,449 INFO L82 PathProgramCache]: Analyzing trace with hash 115385137, now seen corresponding path program 14 times [2018-07-25 13:29:16,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:16,516 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 13:29:16,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:16,517 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:29:16,517 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:29:16,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:29:16,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:29:16,521 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-07-25 13:29:16,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:16,587 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-07-25 13:29:16,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:29:16,587 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-07-25 13:29:16,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:16,588 INFO L225 Difference]: With dead ends: 45 [2018-07-25 13:29:16,588 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 13:29:16,589 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 13:29:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 13:29:16,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-07-25 13:29:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 13:29:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-07-25 13:29:16,606 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-07-25 13:29:16,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:16,607 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-07-25 13:29:16,607 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:29:16,607 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-07-25 13:29:16,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 13:29:16,608 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:16,610 INFO L354 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-07-25 13:29:16,610 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:16,611 INFO L82 PathProgramCache]: Analyzing trace with hash -783980693, now seen corresponding path program 15 times [2018-07-25 13:29:16,611 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:16,713 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 13:29:16,714 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:16,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:29:16,714 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:29:16,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:29:16,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:29:16,715 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 20 states. [2018-07-25 13:29:16,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:16,837 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-07-25 13:29:16,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:29:16,837 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 13:29:16,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:16,838 INFO L225 Difference]: With dead ends: 62 [2018-07-25 13:29:16,838 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 13:29:16,839 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 13:29:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 13:29:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 13:29:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 13:29:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-07-25 13:29:16,848 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2018-07-25 13:29:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:16,848 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-07-25 13:29:16,848 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:29:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-07-25 13:29:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 13:29:16,849 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:16,849 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1] [2018-07-25 13:29:16,850 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:16,850 INFO L82 PathProgramCache]: Analyzing trace with hash 830172837, now seen corresponding path program 16 times [2018-07-25 13:29:16,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:16,906 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 13:29:16,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:16,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:29:16,907 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:29:16,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:29:16,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:29:16,908 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 14 states. [2018-07-25 13:29:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:16,973 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-07-25 13:29:16,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:29:16,974 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2018-07-25 13:29:16,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:16,974 INFO L225 Difference]: With dead ends: 49 [2018-07-25 13:29:16,974 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 13:29:16,975 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 13:29:16,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 13:29:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-07-25 13:29:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 13:29:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-07-25 13:29:16,985 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-07-25 13:29:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:16,985 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-07-25 13:29:16,986 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:29:16,986 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-07-25 13:29:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 13:29:16,986 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:16,986 INFO L354 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-07-25 13:29:16,987 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:16,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1067768353, now seen corresponding path program 17 times [2018-07-25 13:29:16,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:17,080 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 13:29:17,080 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:17,080 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:29:17,081 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:29:17,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:29:17,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:29:17,082 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 22 states. [2018-07-25 13:29:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:17,204 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-07-25 13:29:17,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:29:17,205 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 13:29:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:17,205 INFO L225 Difference]: With dead ends: 68 [2018-07-25 13:29:17,205 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 13:29:17,207 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 13:29:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 13:29:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 13:29:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 13:29:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-07-25 13:29:17,216 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-07-25 13:29:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:17,217 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-07-25 13:29:17,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:29:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-07-25 13:29:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 13:29:17,218 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:17,218 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1] [2018-07-25 13:29:17,218 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2070347801, now seen corresponding path program 18 times [2018-07-25 13:29:17,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:17,280 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 13:29:17,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:17,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 13:29:17,281 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 13:29:17,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 13:29:17,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:29:17,282 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 15 states. [2018-07-25 13:29:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:17,349 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-07-25 13:29:17,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 13:29:17,350 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2018-07-25 13:29:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:17,351 INFO L225 Difference]: With dead ends: 53 [2018-07-25 13:29:17,351 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 13:29:17,352 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 13:29:17,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 13:29:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-07-25 13:29:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 13:29:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-07-25 13:29:17,362 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2018-07-25 13:29:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:17,363 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-07-25 13:29:17,363 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 13:29:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-07-25 13:29:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 13:29:17,364 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:17,364 INFO L354 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-07-25 13:29:17,364 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:17,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1034431059, now seen corresponding path program 19 times [2018-07-25 13:29:17,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:17,484 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 13:29:17,484 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:17,485 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:29:17,486 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:29:17,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:29:17,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:29:17,487 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-07-25 13:29:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:17,627 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2018-07-25 13:29:17,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:29:17,628 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 13:29:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:17,628 INFO L225 Difference]: With dead ends: 74 [2018-07-25 13:29:17,629 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 13:29:17,630 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 13:29:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 13:29:17,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 13:29:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 13:29:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-07-25 13:29:17,643 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2018-07-25 13:29:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:17,644 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-07-25 13:29:17,644 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:29:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-07-25 13:29:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 13:29:17,645 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:17,645 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1] [2018-07-25 13:29:17,646 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:17,646 INFO L82 PathProgramCache]: Analyzing trace with hash 2120767373, now seen corresponding path program 20 times [2018-07-25 13:29:17,646 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:17,720 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 13:29:17,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:17,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:29:17,721 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:29:17,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:29:17,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:29:17,722 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 16 states. [2018-07-25 13:29:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:17,799 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-07-25 13:29:17,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 13:29:17,800 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2018-07-25 13:29:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:17,801 INFO L225 Difference]: With dead ends: 57 [2018-07-25 13:29:17,801 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 13:29:17,802 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 13:29:17,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 13:29:17,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2018-07-25 13:29:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 13:29:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-07-25 13:29:17,814 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-07-25 13:29:17,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:17,814 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-07-25 13:29:17,814 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:29:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-07-25 13:29:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 13:29:17,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:17,815 INFO L354 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-07-25 13:29:17,816 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:17,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2051967801, now seen corresponding path program 21 times [2018-07-25 13:29:17,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:17,949 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 13:29:17,949 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:17,949 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:29:17,950 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:29:17,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:29:17,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:29:17,951 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 26 states. [2018-07-25 13:29:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:18,195 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-07-25 13:29:18,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:29:18,195 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 13:29:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:18,196 INFO L225 Difference]: With dead ends: 80 [2018-07-25 13:29:18,196 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 13:29:18,197 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 13:29:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 13:29:18,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 13:29:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 13:29:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-07-25 13:29:18,221 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-07-25 13:29:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:18,221 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-07-25 13:29:18,221 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:29:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-07-25 13:29:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 13:29:18,222 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:18,222 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1] [2018-07-25 13:29:18,222 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:18,223 INFO L82 PathProgramCache]: Analyzing trace with hash -473664255, now seen corresponding path program 22 times [2018-07-25 13:29:18,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:18,291 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 13:29:18,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:18,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:29:18,292 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:29:18,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:29:18,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:29:18,293 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 17 states. [2018-07-25 13:29:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:18,366 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-07-25 13:29:18,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:29:18,367 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2018-07-25 13:29:18,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:18,367 INFO L225 Difference]: With dead ends: 61 [2018-07-25 13:29:18,368 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 13:29:18,368 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 13:29:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 13:29:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-07-25 13:29:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 13:29:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-07-25 13:29:18,381 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2018-07-25 13:29:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:18,381 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-07-25 13:29:18,381 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:29:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-07-25 13:29:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 13:29:18,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:18,382 INFO L354 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-07-25 13:29:18,382 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash 75236667, now seen corresponding path program 23 times [2018-07-25 13:29:18,383 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:18,502 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 13:29:18,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:18,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:29:18,503 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:29:18,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:29:18,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:29:18,504 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 28 states. [2018-07-25 13:29:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:18,676 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2018-07-25 13:29:18,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:29:18,676 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 13:29:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:18,677 INFO L225 Difference]: With dead ends: 86 [2018-07-25 13:29:18,677 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 13:29:18,679 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 13:29:18,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 13:29:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 13:29:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 13:29:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-07-25 13:29:18,694 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-07-25 13:29:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:18,695 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-07-25 13:29:18,695 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:29:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-07-25 13:29:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 13:29:18,695 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:18,696 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1] [2018-07-25 13:29:18,696 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 608196725, now seen corresponding path program 24 times [2018-07-25 13:29:18,696 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:18,780 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 13:29:18,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:18,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:29:18,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:29:18,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:29:18,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:29:18,782 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 18 states. [2018-07-25 13:29:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:18,871 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-07-25 13:29:18,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 13:29:18,871 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2018-07-25 13:29:18,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:18,872 INFO L225 Difference]: With dead ends: 65 [2018-07-25 13:29:18,872 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 13:29:18,873 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 13:29:18,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 13:29:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-07-25 13:29:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 13:29:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-07-25 13:29:18,887 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-07-25 13:29:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:18,887 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-07-25 13:29:18,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:29:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-07-25 13:29:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 13:29:18,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:18,888 INFO L354 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-07-25 13:29:18,889 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:18,889 INFO L82 PathProgramCache]: Analyzing trace with hash 361552815, now seen corresponding path program 25 times [2018-07-25 13:29:18,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:19,021 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 13:29:19,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:19,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:29:19,023 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:29:19,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:29:19,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:29:19,024 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 30 states. [2018-07-25 13:29:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:19,211 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2018-07-25 13:29:19,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:29:19,211 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 13:29:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:19,211 INFO L225 Difference]: With dead ends: 92 [2018-07-25 13:29:19,212 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 13:29:19,213 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 13:29:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 13:29:19,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 13:29:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 13:29:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-07-25 13:29:19,225 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-07-25 13:29:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:19,225 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-07-25 13:29:19,225 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:29:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-07-25 13:29:19,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 13:29:19,226 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:19,226 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 1, 1, 1, 1] [2018-07-25 13:29:19,226 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:19,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1210122729, now seen corresponding path program 26 times [2018-07-25 13:29:19,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:19,296 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 13:29:19,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:19,297 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 13:29:19,297 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:29:19,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:29:19,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:29:19,298 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 19 states. [2018-07-25 13:29:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:19,380 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-07-25 13:29:19,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:29:19,380 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2018-07-25 13:29:19,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:19,381 INFO L225 Difference]: With dead ends: 69 [2018-07-25 13:29:19,381 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 13:29:19,382 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 13:29:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 13:29:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-07-25 13:29:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 13:29:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-07-25 13:29:19,395 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-07-25 13:29:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:19,396 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-07-25 13:29:19,396 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:29:19,396 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-07-25 13:29:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 13:29:19,397 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:19,397 INFO L354 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-07-25 13:29:19,397 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:19,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1008142301, now seen corresponding path program 27 times [2018-07-25 13:29:19,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:19,532 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 13:29:19,532 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:19,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:29:19,533 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:29:19,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:29:19,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:29:19,534 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 32 states. [2018-07-25 13:29:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:19,743 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2018-07-25 13:29:19,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 13:29:19,744 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 13:29:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:19,745 INFO L225 Difference]: With dead ends: 98 [2018-07-25 13:29:19,745 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 13:29:19,746 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 13:29:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 13:29:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 13:29:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 13:29:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-07-25 13:29:19,762 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2018-07-25 13:29:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:19,763 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-07-25 13:29:19,763 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:29:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-07-25 13:29:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 13:29:19,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:19,764 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 1, 1, 1, 1] [2018-07-25 13:29:19,764 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:19,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1490325155, now seen corresponding path program 28 times [2018-07-25 13:29:19,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:19,852 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 13:29:19,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:19,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:29:19,853 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:29:19,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:29:19,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:29:19,854 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 20 states. [2018-07-25 13:29:19,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:19,950 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-07-25 13:29:19,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 13:29:19,951 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 64 [2018-07-25 13:29:19,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:19,951 INFO L225 Difference]: With dead ends: 73 [2018-07-25 13:29:19,952 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 13:29:19,953 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 13:29:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 13:29:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-07-25 13:29:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 13:29:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-07-25 13:29:19,967 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-07-25 13:29:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:19,968 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-07-25 13:29:19,968 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:29:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-07-25 13:29:19,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 13:29:19,969 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:19,969 INFO L354 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-07-25 13:29:19,969 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:19,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1978312041, now seen corresponding path program 29 times [2018-07-25 13:29:19,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:20,130 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 13:29:20,131 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:20,131 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:29:20,131 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:29:20,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:29:20,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:29:20,133 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 34 states. [2018-07-25 13:29:20,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:20,364 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-07-25 13:29:20,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 13:29:20,365 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 13:29:20,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:20,365 INFO L225 Difference]: With dead ends: 104 [2018-07-25 13:29:20,365 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 13:29:20,367 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=609, Invalid=1841, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:29:20,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 13:29:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 13:29:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 13:29:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-07-25 13:29:20,383 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-07-25 13:29:20,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:20,383 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-07-25 13:29:20,383 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:29:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-07-25 13:29:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 13:29:20,384 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:20,384 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 1, 1, 1, 1] [2018-07-25 13:29:20,384 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:20,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1465604399, now seen corresponding path program 30 times [2018-07-25 13:29:20,385 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:20,475 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 13:29:20,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:20,476 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:29:20,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:29:20,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:29:20,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:29:20,478 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 21 states. [2018-07-25 13:29:20,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:20,584 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2018-07-25 13:29:20,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 13:29:20,585 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2018-07-25 13:29:20,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:20,586 INFO L225 Difference]: With dead ends: 77 [2018-07-25 13:29:20,586 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 13:29:20,587 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 13:29:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 13:29:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2018-07-25 13:29:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 13:29:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-07-25 13:29:20,606 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2018-07-25 13:29:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:20,606 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-07-25 13:29:20,606 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:29:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-07-25 13:29:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 13:29:20,608 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:20,608 INFO L354 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-07-25 13:29:20,608 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash 303497995, now seen corresponding path program 31 times [2018-07-25 13:29:20,609 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:20,804 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 13:29:20,804 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:20,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:29:20,805 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:29:20,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:29:20,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:29:20,809 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 36 states. [2018-07-25 13:29:21,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:21,123 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2018-07-25 13:29:21,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 13:29:21,123 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 13:29:21,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:21,124 INFO L225 Difference]: With dead ends: 110 [2018-07-25 13:29:21,124 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 13:29:21,127 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 13:29:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 13:29:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 13:29:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 13:29:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-07-25 13:29:21,144 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2018-07-25 13:29:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:21,144 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-07-25 13:29:21,144 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:29:21,144 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-07-25 13:29:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 13:29:21,145 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:21,145 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 1, 1, 1, 1] [2018-07-25 13:29:21,145 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:21,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2091802043, now seen corresponding path program 32 times [2018-07-25 13:29:21,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:21,238 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 13:29:21,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:21,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:29:21,239 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:29:21,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:29:21,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:29:21,240 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 22 states. [2018-07-25 13:29:21,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:21,342 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-07-25 13:29:21,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 13:29:21,342 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 72 [2018-07-25 13:29:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:21,343 INFO L225 Difference]: With dead ends: 81 [2018-07-25 13:29:21,343 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 13:29:21,344 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 13:29:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 13:29:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-07-25 13:29:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 13:29:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-07-25 13:29:21,364 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-07-25 13:29:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:21,365 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-07-25 13:29:21,365 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:29:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-07-25 13:29:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 13:29:21,366 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:21,366 INFO L354 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-07-25 13:29:21,366 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:21,367 INFO L82 PathProgramCache]: Analyzing trace with hash -177016449, now seen corresponding path program 33 times [2018-07-25 13:29:21,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:21,560 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 13:29:21,560 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:21,561 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:29:21,561 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:29:21,561 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:29:21,562 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:29:21,562 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 38 states. [2018-07-25 13:29:21,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:21,828 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2018-07-25 13:29:21,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 13:29:21,828 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 13:29:21,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:21,829 INFO L225 Difference]: With dead ends: 116 [2018-07-25 13:29:21,829 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 13:29:21,831 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 13:29:21,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 13:29:21,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 13:29:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 13:29:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-07-25 13:29:21,851 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-07-25 13:29:21,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:21,851 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-07-25 13:29:21,851 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:29:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-07-25 13:29:21,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 13:29:21,852 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:21,852 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1] [2018-07-25 13:29:21,853 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:21,853 INFO L82 PathProgramCache]: Analyzing trace with hash -42507335, now seen corresponding path program 34 times [2018-07-25 13:29:21,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:21,959 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 13:29:21,960 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:21,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 13:29:21,960 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 13:29:21,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 13:29:21,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:29:21,961 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 23 states. [2018-07-25 13:29:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:22,067 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2018-07-25 13:29:22,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 13:29:22,067 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2018-07-25 13:29:22,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:22,068 INFO L225 Difference]: With dead ends: 85 [2018-07-25 13:29:22,068 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 13:29:22,069 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 13:29:22,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 13:29:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-07-25 13:29:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 13:29:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-07-25 13:29:22,092 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2018-07-25 13:29:22,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:22,092 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-07-25 13:29:22,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 13:29:22,093 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-07-25 13:29:22,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 13:29:22,093 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:22,094 INFO L354 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-07-25 13:29:22,094 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2100176371, now seen corresponding path program 35 times [2018-07-25 13:29:22,094 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:22,271 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 13:29:22,271 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:22,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:29:22,272 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:29:22,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:29:22,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:29:22,273 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 40 states. [2018-07-25 13:29:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:22,555 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-07-25 13:29:22,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 13:29:22,555 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 13:29:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:22,556 INFO L225 Difference]: With dead ends: 122 [2018-07-25 13:29:22,556 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 13:29:22,558 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 13:29:22,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 13:29:22,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 13:29:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 13:29:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-07-25 13:29:22,578 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-07-25 13:29:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:22,579 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-07-25 13:29:22,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:29:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-07-25 13:29:22,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 13:29:22,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:22,580 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1] [2018-07-25 13:29:22,580 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:22,581 INFO L82 PathProgramCache]: Analyzing trace with hash 752544557, now seen corresponding path program 36 times [2018-07-25 13:29:22,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:22,699 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 13:29:22,699 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:22,699 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:29:22,699 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:29:22,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:29:22,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:29:22,701 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 24 states. [2018-07-25 13:29:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:22,815 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-07-25 13:29:22,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 13:29:22,815 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2018-07-25 13:29:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:22,816 INFO L225 Difference]: With dead ends: 89 [2018-07-25 13:29:22,816 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 13:29:22,817 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 13:29:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 13:29:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2018-07-25 13:29:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 13:29:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-07-25 13:29:22,842 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-07-25 13:29:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:22,842 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-07-25 13:29:22,842 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:29:22,843 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-07-25 13:29:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 13:29:22,843 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:22,844 INFO L354 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-07-25 13:29:22,844 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:22,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1640865895, now seen corresponding path program 37 times [2018-07-25 13:29:22,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:23,058 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 13:29:23,059 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:23,059 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:29:23,059 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:29:23,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:29:23,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:29:23,061 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 42 states. [2018-07-25 13:29:23,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:23,377 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2018-07-25 13:29:23,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 13:29:23,378 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 13:29:23,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:23,379 INFO L225 Difference]: With dead ends: 128 [2018-07-25 13:29:23,379 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 13:29:23,382 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 13:29:23,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 13:29:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 13:29:23,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 13:29:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-07-25 13:29:23,406 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-07-25 13:29:23,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:23,407 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-07-25 13:29:23,407 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:29:23,407 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-07-25 13:29:23,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 13:29:23,408 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:23,408 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1] [2018-07-25 13:29:23,408 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:23,408 INFO L82 PathProgramCache]: Analyzing trace with hash 918632609, now seen corresponding path program 38 times [2018-07-25 13:29:23,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:23,548 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 13:29:23,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:23,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:29:23,549 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:29:23,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:29:23,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:29:23,550 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 25 states. [2018-07-25 13:29:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:23,694 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-07-25 13:29:23,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 13:29:23,695 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 84 [2018-07-25 13:29:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:23,696 INFO L225 Difference]: With dead ends: 93 [2018-07-25 13:29:23,696 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 13:29:23,697 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 13:29:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 13:29:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-07-25 13:29:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 13:29:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-07-25 13:29:23,724 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-07-25 13:29:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:23,725 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-07-25 13:29:23,725 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:29:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-07-25 13:29:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 13:29:23,726 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:23,726 INFO L354 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-07-25 13:29:23,726 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:23,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1957273381, now seen corresponding path program 39 times [2018-07-25 13:29:23,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:23,994 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 13:29:23,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:23,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:29:23,995 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:29:23,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:29:23,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:29:23,997 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 44 states. [2018-07-25 13:29:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:24,263 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2018-07-25 13:29:24,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 13:29:24,263 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 13:29:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:24,264 INFO L225 Difference]: With dead ends: 134 [2018-07-25 13:29:24,264 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 13:29:24,266 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 13:29:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 13:29:24,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 13:29:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 13:29:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-07-25 13:29:24,294 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2018-07-25 13:29:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:24,294 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-07-25 13:29:24,294 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:29:24,294 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-07-25 13:29:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 13:29:24,295 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:24,295 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 1, 1, 1, 1] [2018-07-25 13:29:24,296 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:24,296 INFO L82 PathProgramCache]: Analyzing trace with hash 267340821, now seen corresponding path program 40 times [2018-07-25 13:29:24,296 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:24,447 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 13:29:24,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:24,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:29:24,447 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:29:24,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:29:24,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:29:24,448 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 26 states. [2018-07-25 13:29:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:24,559 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-07-25 13:29:24,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 13:29:24,559 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 88 [2018-07-25 13:29:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:24,560 INFO L225 Difference]: With dead ends: 97 [2018-07-25 13:29:24,560 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 13:29:24,561 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 13:29:24,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 13:29:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2018-07-25 13:29:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 13:29:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-07-25 13:29:24,585 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-07-25 13:29:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:24,585 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-07-25 13:29:24,585 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:29:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-07-25 13:29:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 13:29:24,586 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:24,586 INFO L354 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-07-25 13:29:24,586 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:24,587 INFO L82 PathProgramCache]: Analyzing trace with hash -783456433, now seen corresponding path program 41 times [2018-07-25 13:29:24,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:24,775 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 13:29:24,776 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:24,776 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:29:24,776 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:29:24,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:29:24,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:29:24,778 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 46 states. [2018-07-25 13:29:25,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:25,098 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2018-07-25 13:29:25,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 13:29:25,099 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 13:29:25,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:25,100 INFO L225 Difference]: With dead ends: 140 [2018-07-25 13:29:25,100 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 13:29:25,102 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 13:29:25,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 13:29:25,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 13:29:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 13:29:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-07-25 13:29:25,130 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-07-25 13:29:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:25,131 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-07-25 13:29:25,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:29:25,131 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-07-25 13:29:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 13:29:25,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:25,132 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 1, 1, 1, 1] [2018-07-25 13:29:25,132 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:25,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1017783689, now seen corresponding path program 42 times [2018-07-25 13:29:25,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:25,242 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 13:29:25,243 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:25,243 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 13:29:25,243 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 13:29:25,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 13:29:25,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:29:25,244 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 27 states. [2018-07-25 13:29:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:25,366 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-07-25 13:29:25,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 13:29:25,367 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 92 [2018-07-25 13:29:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:25,368 INFO L225 Difference]: With dead ends: 101 [2018-07-25 13:29:25,368 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 13:29:25,369 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 13:29:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 13:29:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-07-25 13:29:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 13:29:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-07-25 13:29:25,398 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2018-07-25 13:29:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:25,398 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-07-25 13:29:25,398 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 13:29:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-07-25 13:29:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 13:29:25,399 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:25,400 INFO L354 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-07-25 13:29:25,400 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:25,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1162366013, now seen corresponding path program 43 times [2018-07-25 13:29:25,400 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:25,619 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 13:29:25,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:25,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:29:25,620 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:29:25,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:29:25,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:29:25,622 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 48 states. [2018-07-25 13:29:25,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:25,983 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2018-07-25 13:29:25,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 13:29:25,983 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 13:29:25,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:25,984 INFO L225 Difference]: With dead ends: 146 [2018-07-25 13:29:25,984 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 13:29:25,986 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 13:29:25,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 13:29:26,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 13:29:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 13:29:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-07-25 13:29:26,016 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2018-07-25 13:29:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:26,017 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-07-25 13:29:26,017 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:29:26,017 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-07-25 13:29:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 13:29:26,018 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:26,018 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 1, 1, 1, 1] [2018-07-25 13:29:26,018 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:26,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1867070211, now seen corresponding path program 44 times [2018-07-25 13:29:26,019 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:26,135 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 13:29:26,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:26,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:29:26,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:29:26,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:29:26,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:29:26,137 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 28 states. [2018-07-25 13:29:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:26,269 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-07-25 13:29:26,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 13:29:26,269 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 96 [2018-07-25 13:29:26,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:26,270 INFO L225 Difference]: With dead ends: 105 [2018-07-25 13:29:26,270 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 13:29:26,271 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:29:26,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 13:29:26,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-07-25 13:29:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 13:29:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-07-25 13:29:26,300 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-07-25 13:29:26,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:26,301 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-07-25 13:29:26,301 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:29:26,301 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-07-25 13:29:26,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 13:29:26,302 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:26,302 INFO L354 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-07-25 13:29:26,302 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:26,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1041909303, now seen corresponding path program 45 times [2018-07-25 13:29:26,302 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:26,524 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 13:29:26,524 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:26,524 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:29:26,524 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:29:26,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:29:26,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:29:26,526 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 50 states. [2018-07-25 13:29:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:26,903 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2018-07-25 13:29:26,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 13:29:26,903 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 13:29:26,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:26,904 INFO L225 Difference]: With dead ends: 152 [2018-07-25 13:29:26,904 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 13:29:26,906 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 13:29:26,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 13:29:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 13:29:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 13:29:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-07-25 13:29:26,933 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-07-25 13:29:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:26,934 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-07-25 13:29:26,934 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:29:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-07-25 13:29:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 13:29:26,935 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:26,935 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 1, 1, 1, 1] [2018-07-25 13:29:26,935 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:26,936 INFO L82 PathProgramCache]: Analyzing trace with hash -279303567, now seen corresponding path program 46 times [2018-07-25 13:29:26,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:27,056 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 13:29:27,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:27,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:29:27,057 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:29:27,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:29:27,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:29:27,058 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 29 states. [2018-07-25 13:29:27,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:27,213 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-07-25 13:29:27,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 13:29:27,213 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2018-07-25 13:29:27,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:27,214 INFO L225 Difference]: With dead ends: 109 [2018-07-25 13:29:27,214 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 13:29:27,215 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 13:29:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 13:29:27,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2018-07-25 13:29:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 13:29:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-07-25 13:29:27,254 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2018-07-25 13:29:27,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:27,254 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-07-25 13:29:27,254 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:29:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-07-25 13:29:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 13:29:27,255 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:27,256 INFO L354 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-07-25 13:29:27,256 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:27,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2122703189, now seen corresponding path program 47 times [2018-07-25 13:29:27,256 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:27,555 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 13:29:27,555 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:27,555 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:29:27,556 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:29:27,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:29:27,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:29:27,558 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 52 states. [2018-07-25 13:29:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:27,928 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2018-07-25 13:29:27,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 13:29:27,928 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 13:29:27,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:27,929 INFO L225 Difference]: With dead ends: 158 [2018-07-25 13:29:27,929 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 13:29:27,931 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 13:29:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 13:29:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 13:29:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 13:29:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-07-25 13:29:27,959 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-07-25 13:29:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:27,959 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-07-25 13:29:27,959 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:29:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-07-25 13:29:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 13:29:27,960 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:27,960 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 1, 1, 1, 1] [2018-07-25 13:29:27,960 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:27,961 INFO L82 PathProgramCache]: Analyzing trace with hash 190404069, now seen corresponding path program 48 times [2018-07-25 13:29:27,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:28,064 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 13:29:28,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:28,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:29:28,065 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:29:28,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:29:28,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:29:28,066 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 30 states. [2018-07-25 13:29:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:28,196 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2018-07-25 13:29:28,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 13:29:28,196 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 104 [2018-07-25 13:29:28,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:28,197 INFO L225 Difference]: With dead ends: 113 [2018-07-25 13:29:28,197 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 13:29:28,198 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 13:29:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 13:29:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2018-07-25 13:29:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 13:29:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-07-25 13:29:28,228 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-07-25 13:29:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:28,229 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-07-25 13:29:28,229 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:29:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-07-25 13:29:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 13:29:28,230 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:28,230 INFO L354 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-07-25 13:29:28,230 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:28,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1705231073, now seen corresponding path program 49 times [2018-07-25 13:29:28,231 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:28,464 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 13:29:28,465 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:28,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:29:28,465 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:29:28,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:29:28,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:29:28,467 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 54 states. [2018-07-25 13:29:28,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:28,811 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2018-07-25 13:29:28,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 13:29:28,812 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 13:29:28,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:28,813 INFO L225 Difference]: With dead ends: 164 [2018-07-25 13:29:28,813 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 13:29:28,815 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 13:29:28,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 13:29:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 13:29:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 13:29:28,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-07-25 13:29:28,848 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-07-25 13:29:28,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:28,848 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-07-25 13:29:28,848 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:29:28,848 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-07-25 13:29:28,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 13:29:28,851 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:28,851 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 1, 1, 1, 1] [2018-07-25 13:29:28,851 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:28,851 INFO L82 PathProgramCache]: Analyzing trace with hash 653870937, now seen corresponding path program 50 times [2018-07-25 13:29:28,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:28,975 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 13:29:28,975 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:28,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 13:29:28,976 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 13:29:28,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 13:29:28,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:29:28,977 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 31 states. [2018-07-25 13:29:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:29,119 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-07-25 13:29:29,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 13:29:29,119 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2018-07-25 13:29:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:29,120 INFO L225 Difference]: With dead ends: 117 [2018-07-25 13:29:29,120 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 13:29:29,121 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 13:29:29,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 13:29:29,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2018-07-25 13:29:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 13:29:29,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-07-25 13:29:29,152 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-07-25 13:29:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:29,152 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-07-25 13:29:29,153 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 13:29:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-07-25 13:29:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 13:29:29,154 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:29,154 INFO L354 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-07-25 13:29:29,154 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:29,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1304797587, now seen corresponding path program 51 times [2018-07-25 13:29:29,157 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:29,386 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 13:29:29,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:29,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:29:29,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:29:29,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:29:29,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:29:29,388 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 56 states. [2018-07-25 13:29:29,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:29,809 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2018-07-25 13:29:29,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 13:29:29,810 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 13:29:29,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:29,811 INFO L225 Difference]: With dead ends: 170 [2018-07-25 13:29:29,811 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 13:29:29,812 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 13:29:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 13:29:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 13:29:29,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 13:29:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-07-25 13:29:29,841 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2018-07-25 13:29:29,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:29,842 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-07-25 13:29:29,842 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:29:29,842 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-07-25 13:29:29,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 13:29:29,843 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:29,843 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 1, 1, 1, 1] [2018-07-25 13:29:29,843 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:29,843 INFO L82 PathProgramCache]: Analyzing trace with hash -738263347, now seen corresponding path program 52 times [2018-07-25 13:29:29,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:29,965 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 13:29:29,965 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:29,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:29:29,966 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:29:29,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:29:29,967 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:29:29,967 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 32 states. [2018-07-25 13:29:30,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:30,122 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-07-25 13:29:30,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 13:29:30,122 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 112 [2018-07-25 13:29:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:30,123 INFO L225 Difference]: With dead ends: 121 [2018-07-25 13:29:30,124 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 13:29:30,124 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 13:29:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 13:29:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-07-25 13:29:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 13:29:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-07-25 13:29:30,162 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-07-25 13:29:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:30,163 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-07-25 13:29:30,163 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:29:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-07-25 13:29:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 13:29:30,164 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:30,165 INFO L354 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-07-25 13:29:30,165 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:30,165 INFO L82 PathProgramCache]: Analyzing trace with hash -801420281, now seen corresponding path program 53 times [2018-07-25 13:29:30,166 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:30,439 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 13:29:30,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:30,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:29:30,440 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:29:30,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:29:30,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:29:30,442 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 58 states. [2018-07-25 13:29:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:30,824 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2018-07-25 13:29:30,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 13:29:30,824 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 13:29:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:30,825 INFO L225 Difference]: With dead ends: 176 [2018-07-25 13:29:30,825 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 13:29:30,826 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 13:29:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 13:29:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 13:29:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 13:29:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-07-25 13:29:30,857 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-07-25 13:29:30,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:30,857 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-07-25 13:29:30,857 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:29:30,857 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-07-25 13:29:30,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 13:29:30,858 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:30,859 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 1, 1, 1, 1] [2018-07-25 13:29:30,859 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:30,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1280345023, now seen corresponding path program 54 times [2018-07-25 13:29:30,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:30,972 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 13:29:30,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:30,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:29:30,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:29:30,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:29:30,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:29:30,973 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 33 states. [2018-07-25 13:29:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:31,110 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-07-25 13:29:31,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 13:29:31,111 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 116 [2018-07-25 13:29:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:31,112 INFO L225 Difference]: With dead ends: 125 [2018-07-25 13:29:31,112 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 13:29:31,113 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 13:29:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 13:29:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-07-25 13:29:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 13:29:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-07-25 13:29:31,146 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2018-07-25 13:29:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:31,147 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-07-25 13:29:31,147 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:29:31,147 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-07-25 13:29:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 13:29:31,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:31,148 INFO L354 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-07-25 13:29:31,148 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:31,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2050868101, now seen corresponding path program 55 times [2018-07-25 13:29:31,149 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:31,390 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 13:29:31,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:31,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:29:31,391 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:29:31,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:29:31,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:29:31,392 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 60 states. [2018-07-25 13:29:31,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:31,760 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-07-25 13:29:31,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 13:29:31,761 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 13:29:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:31,762 INFO L225 Difference]: With dead ends: 182 [2018-07-25 13:29:31,762 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 13:29:31,763 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=1857, Invalid=5975, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:29:31,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 13:29:31,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 13:29:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 13:29:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-07-25 13:29:31,796 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118 [2018-07-25 13:29:31,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:31,797 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-07-25 13:29:31,797 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:29:31,797 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-07-25 13:29:31,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 13:29:31,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:31,798 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 1, 1, 1, 1] [2018-07-25 13:29:31,798 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:31,799 INFO L82 PathProgramCache]: Analyzing trace with hash 919584693, now seen corresponding path program 56 times [2018-07-25 13:29:31,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:31,914 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 13:29:31,914 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:31,914 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:29:31,915 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:29:31,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:29:31,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:29:31,915 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 34 states. [2018-07-25 13:29:32,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:32,058 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-07-25 13:29:32,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 13:29:32,059 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 120 [2018-07-25 13:29:32,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:32,060 INFO L225 Difference]: With dead ends: 129 [2018-07-25 13:29:32,060 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 13:29:32,061 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:29:32,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 13:29:32,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2018-07-25 13:29:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 13:29:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-07-25 13:29:32,100 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-07-25 13:29:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:32,100 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-07-25 13:29:32,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:29:32,100 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-07-25 13:29:32,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 13:29:32,101 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:32,102 INFO L354 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-07-25 13:29:32,102 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:32,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1042320657, now seen corresponding path program 57 times [2018-07-25 13:29:32,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:32,375 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 13:29:32,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:32,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:29:32,376 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:29:32,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:29:32,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:29:32,377 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 62 states. [2018-07-25 13:29:32,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:32,890 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2018-07-25 13:29:32,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:29:32,891 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 13:29:32,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:32,892 INFO L225 Difference]: With dead ends: 188 [2018-07-25 13:29:32,892 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 13:29:32,893 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 13:29:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 13:29:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 13:29:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 13:29:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-07-25 13:29:32,932 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-07-25 13:29:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:32,932 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-07-25 13:29:32,932 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:29:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-07-25 13:29:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 13:29:32,934 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:32,934 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 1, 1, 1, 1] [2018-07-25 13:29:32,934 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:32,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1571080489, now seen corresponding path program 58 times [2018-07-25 13:29:32,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:33,072 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 13:29:33,072 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:33,072 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 13:29:33,073 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 13:29:33,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 13:29:33,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:29:33,074 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 35 states. [2018-07-25 13:29:33,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:33,233 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-07-25 13:29:33,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 13:29:33,234 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 124 [2018-07-25 13:29:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:33,235 INFO L225 Difference]: With dead ends: 133 [2018-07-25 13:29:33,236 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 13:29:33,237 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 13:29:33,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 13:29:33,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-07-25 13:29:33,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 13:29:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-07-25 13:29:33,283 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124 [2018-07-25 13:29:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:33,283 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-07-25 13:29:33,283 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 13:29:33,284 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-07-25 13:29:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 13:29:33,285 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:33,285 INFO L354 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-07-25 13:29:33,285 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:33,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2020085917, now seen corresponding path program 59 times [2018-07-25 13:29:33,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:33,651 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 13:29:33,652 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:33,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:29:33,652 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:29:33,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:29:33,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:29:33,654 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 64 states. [2018-07-25 13:29:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:34,112 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2018-07-25 13:29:34,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 13:29:34,112 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 13:29:34,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:34,113 INFO L225 Difference]: With dead ends: 194 [2018-07-25 13:29:34,113 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 13:29:34,115 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=2109, Invalid=6821, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:29:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 13:29:34,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 13:29:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 13:29:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-07-25 13:29:34,150 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-07-25 13:29:34,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:34,151 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-07-25 13:29:34,151 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:29:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-07-25 13:29:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 13:29:34,152 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:34,152 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 1, 1, 1, 1] [2018-07-25 13:29:34,153 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:34,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2012453021, now seen corresponding path program 60 times [2018-07-25 13:29:34,153 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:34,274 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 13:29:34,274 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:34,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:29:34,275 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:29:34,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:29:34,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:29:34,276 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 36 states. [2018-07-25 13:29:34,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:34,423 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2018-07-25 13:29:34,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 13:29:34,424 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 128 [2018-07-25 13:29:34,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:34,425 INFO L225 Difference]: With dead ends: 137 [2018-07-25 13:29:34,425 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 13:29:34,426 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 13:29:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 13:29:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2018-07-25 13:29:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 13:29:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-07-25 13:29:34,463 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-07-25 13:29:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:34,464 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-07-25 13:29:34,464 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:29:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-07-25 13:29:34,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 13:29:34,465 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:34,465 INFO L354 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-07-25 13:29:34,465 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:34,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1232122327, now seen corresponding path program 61 times [2018-07-25 13:29:34,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:34,731 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 13:29:34,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:34,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:29:34,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:29:34,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:29:34,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:29:34,734 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 66 states. [2018-07-25 13:29:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:35,160 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2018-07-25 13:29:35,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 13:29:35,160 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 13:29:35,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:35,162 INFO L225 Difference]: With dead ends: 200 [2018-07-25 13:29:35,162 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 13:29:35,163 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 13:29:35,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 13:29:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 13:29:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 13:29:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-07-25 13:29:35,200 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-07-25 13:29:35,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:35,200 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-07-25 13:29:35,200 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:29:35,200 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-07-25 13:29:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 13:29:35,201 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:35,203 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 32, 31, 1, 1, 1, 1] [2018-07-25 13:29:35,203 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:35,203 INFO L82 PathProgramCache]: Analyzing trace with hash -452907503, now seen corresponding path program 62 times [2018-07-25 13:29:35,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:35,328 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 13:29:35,328 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:35,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:29:35,329 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:29:35,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:29:35,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:29:35,330 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 37 states. [2018-07-25 13:29:35,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:35,482 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-07-25 13:29:35,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 13:29:35,483 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 132 [2018-07-25 13:29:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:35,484 INFO L225 Difference]: With dead ends: 141 [2018-07-25 13:29:35,484 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 13:29:35,485 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 13:29:35,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 13:29:35,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-07-25 13:29:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 13:29:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-07-25 13:29:35,527 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-07-25 13:29:35,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:35,527 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-07-25 13:29:35,527 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:29:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-07-25 13:29:35,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 13:29:35,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:35,529 INFO L354 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-07-25 13:29:35,529 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:35,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1452361141, now seen corresponding path program 63 times [2018-07-25 13:29:35,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:35,841 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 13:29:35,842 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:35,842 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:29:35,842 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:29:35,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:29:35,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:29:35,844 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 68 states. [2018-07-25 13:29:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:36,396 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2018-07-25 13:29:36,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 13:29:36,396 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 13:29:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:36,397 INFO L225 Difference]: With dead ends: 206 [2018-07-25 13:29:36,398 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 13:29:36,399 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 13:29:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 13:29:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 13:29:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 13:29:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-07-25 13:29:36,439 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2018-07-25 13:29:36,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:36,439 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-07-25 13:29:36,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:29:36,439 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-07-25 13:29:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 13:29:36,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:36,441 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 33, 32, 1, 1, 1, 1] [2018-07-25 13:29:36,441 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:36,441 INFO L82 PathProgramCache]: Analyzing trace with hash -745371259, now seen corresponding path program 64 times [2018-07-25 13:29:36,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:36,578 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 13:29:36,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:36,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:29:36,579 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:29:36,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:29:36,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:29:36,580 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 38 states. [2018-07-25 13:29:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:36,776 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-07-25 13:29:36,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 13:29:36,776 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 136 [2018-07-25 13:29:36,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:36,777 INFO L225 Difference]: With dead ends: 145 [2018-07-25 13:29:36,777 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 13:29:36,778 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 13:29:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 13:29:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-07-25 13:29:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 13:29:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-07-25 13:29:36,823 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-07-25 13:29:36,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:36,823 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-07-25 13:29:36,823 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:29:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-07-25 13:29:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 13:29:36,824 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:36,825 INFO L354 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-07-25 13:29:36,825 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:36,825 INFO L82 PathProgramCache]: Analyzing trace with hash 957810879, now seen corresponding path program 65 times [2018-07-25 13:29:36,825 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:37,100 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 13:29:37,101 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:37,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:29:37,101 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:29:37,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:29:37,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:29:37,102 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 70 states. [2018-07-25 13:29:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:37,524 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2018-07-25 13:29:37,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 13:29:37,525 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 13:29:37,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:37,526 INFO L225 Difference]: With dead ends: 212 [2018-07-25 13:29:37,526 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 13:29:37,528 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 13:29:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 13:29:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 13:29:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 13:29:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-07-25 13:29:37,567 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-07-25 13:29:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:37,567 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-07-25 13:29:37,568 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:29:37,568 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-07-25 13:29:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 13:29:37,568 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:37,569 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 1, 1, 1, 1] [2018-07-25 13:29:37,569 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:37,569 INFO L82 PathProgramCache]: Analyzing trace with hash 32287481, now seen corresponding path program 66 times [2018-07-25 13:29:37,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:37,710 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 13:29:37,711 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:37,711 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 13:29:37,711 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 13:29:37,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 13:29:37,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:29:37,712 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 39 states. [2018-07-25 13:29:37,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:37,876 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-07-25 13:29:37,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 13:29:37,877 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 140 [2018-07-25 13:29:37,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:37,878 INFO L225 Difference]: With dead ends: 149 [2018-07-25 13:29:37,878 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 13:29:37,879 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 13:29:37,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 13:29:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2018-07-25 13:29:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 13:29:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-07-25 13:29:37,928 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2018-07-25 13:29:37,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:37,929 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-07-25 13:29:37,929 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 13:29:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-07-25 13:29:37,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 13:29:37,930 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:37,930 INFO L354 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-07-25 13:29:37,930 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:37,931 INFO L82 PathProgramCache]: Analyzing trace with hash 963550515, now seen corresponding path program 67 times [2018-07-25 13:29:37,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:38,263 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 13:29:38,264 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:38,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:29:38,268 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:29:38,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:29:38,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:29:38,270 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 72 states. [2018-07-25 13:29:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:38,792 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2018-07-25 13:29:38,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 13:29:38,792 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 13:29:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:38,793 INFO L225 Difference]: With dead ends: 218 [2018-07-25 13:29:38,793 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 13:29:38,797 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 13:29:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 13:29:38,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 13:29:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 13:29:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-07-25 13:29:38,838 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 142 [2018-07-25 13:29:38,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:38,838 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-07-25 13:29:38,838 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:29:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-07-25 13:29:38,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 13:29:38,839 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:38,839 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 1, 1, 1, 1] [2018-07-25 13:29:38,840 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:38,840 INFO L82 PathProgramCache]: Analyzing trace with hash 2111083117, now seen corresponding path program 68 times [2018-07-25 13:29:38,840 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:38,982 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 13:29:38,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:38,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:29:38,983 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:29:38,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:29:38,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:29:38,984 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 40 states. [2018-07-25 13:29:39,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:39,153 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-07-25 13:29:39,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 13:29:39,153 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 144 [2018-07-25 13:29:39,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:39,154 INFO L225 Difference]: With dead ends: 153 [2018-07-25 13:29:39,154 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 13:29:39,155 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 13:29:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 13:29:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2018-07-25 13:29:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 13:29:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-07-25 13:29:39,201 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-07-25 13:29:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:39,201 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-07-25 13:29:39,202 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:29:39,202 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-07-25 13:29:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 13:29:39,202 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:39,203 INFO L354 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-07-25 13:29:39,203 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:39,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1526364071, now seen corresponding path program 69 times [2018-07-25 13:29:39,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:39,558 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 13:29:39,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:39,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:29:39,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:29:39,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:29:39,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:29:39,560 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 74 states. [2018-07-25 13:29:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:40,196 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2018-07-25 13:29:40,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 13:29:40,196 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 13:29:40,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:40,197 INFO L225 Difference]: With dead ends: 224 [2018-07-25 13:29:40,197 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 13:29:40,198 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 13:29:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 13:29:40,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 13:29:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 13:29:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-07-25 13:29:40,242 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-07-25 13:29:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:40,243 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-07-25 13:29:40,243 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:29:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-07-25 13:29:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 13:29:40,244 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:40,244 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 36, 35, 1, 1, 1, 1] [2018-07-25 13:29:40,244 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:40,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1687109601, now seen corresponding path program 70 times [2018-07-25 13:29:40,245 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:40,386 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 13:29:40,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:40,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:29:40,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:29:40,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:29:40,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:29:40,388 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 41 states. [2018-07-25 13:29:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:40,569 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-07-25 13:29:40,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 13:29:40,569 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 148 [2018-07-25 13:29:40,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:40,570 INFO L225 Difference]: With dead ends: 157 [2018-07-25 13:29:40,570 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 13:29:40,571 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 13:29:40,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 13:29:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2018-07-25 13:29:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 13:29:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-07-25 13:29:40,626 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 148 [2018-07-25 13:29:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:40,626 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-07-25 13:29:40,626 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:29:40,626 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-07-25 13:29:40,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 13:29:40,627 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:40,627 INFO L354 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-07-25 13:29:40,628 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:40,628 INFO L82 PathProgramCache]: Analyzing trace with hash 2109708315, now seen corresponding path program 71 times [2018-07-25 13:29:40,628 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:40,995 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 13:29:40,995 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:40,995 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:29:40,996 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:29:40,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:29:40,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:29:40,997 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 76 states. [2018-07-25 13:29:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:41,549 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2018-07-25 13:29:41,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 13:29:41,549 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 13:29:41,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:41,551 INFO L225 Difference]: With dead ends: 230 [2018-07-25 13:29:41,551 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 13:29:41,552 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=2961, Invalid=9695, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 13:29:41,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 13:29:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 13:29:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 13:29:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-07-25 13:29:41,593 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-07-25 13:29:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:41,593 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-07-25 13:29:41,593 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:29:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-07-25 13:29:41,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 13:29:41,594 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:41,595 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 37, 36, 1, 1, 1, 1] [2018-07-25 13:29:41,595 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:41,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1562266795, now seen corresponding path program 72 times [2018-07-25 13:29:41,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:41,760 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 13:29:41,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:41,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:29:41,761 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:29:41,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:29:41,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:29:41,762 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 42 states. [2018-07-25 13:29:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:41,949 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2018-07-25 13:29:41,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 13:29:41,950 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 152 [2018-07-25 13:29:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:41,951 INFO L225 Difference]: With dead ends: 161 [2018-07-25 13:29:41,951 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 13:29:41,952 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 13:29:41,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 13:29:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-07-25 13:29:42,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 13:29:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-07-25 13:29:42,009 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-07-25 13:29:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:42,009 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-07-25 13:29:42,009 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:29:42,010 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-07-25 13:29:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 13:29:42,010 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:42,011 INFO L354 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-07-25 13:29:42,011 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:42,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1900215951, now seen corresponding path program 73 times [2018-07-25 13:29:42,011 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:42,391 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 13:29:42,392 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:42,392 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:29:42,392 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:29:42,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:29:42,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:29:42,394 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 78 states. [2018-07-25 13:29:42,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:42,921 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2018-07-25 13:29:42,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 13:29:42,922 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 13:29:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:42,923 INFO L225 Difference]: With dead ends: 236 [2018-07-25 13:29:42,923 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 13:29:42,924 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 13:29:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 13:29:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 13:29:42,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 13:29:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-07-25 13:29:42,978 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-07-25 13:29:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:42,978 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-07-25 13:29:42,978 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:29:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-07-25 13:29:42,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 13:29:42,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:42,980 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 38, 37, 1, 1, 1, 1] [2018-07-25 13:29:42,980 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:42,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1257182007, now seen corresponding path program 74 times [2018-07-25 13:29:42,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:43,194 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 13:29:43,194 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:43,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 13:29:43,195 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 13:29:43,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 13:29:43,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:29:43,196 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 43 states. [2018-07-25 13:29:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:43,371 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-07-25 13:29:43,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 13:29:43,371 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 156 [2018-07-25 13:29:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:43,373 INFO L225 Difference]: With dead ends: 165 [2018-07-25 13:29:43,373 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 13:29:43,374 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 13:29:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 13:29:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-07-25 13:29:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 13:29:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-07-25 13:29:43,425 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-07-25 13:29:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:43,425 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-07-25 13:29:43,425 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 13:29:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-07-25 13:29:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 13:29:43,426 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:43,426 INFO L354 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-07-25 13:29:43,427 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:43,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1266046205, now seen corresponding path program 75 times [2018-07-25 13:29:43,427 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:43,747 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 13:29:43,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:43,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:29:43,748 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:29:43,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:29:43,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:29:43,749 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 80 states. [2018-07-25 13:29:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:44,177 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-07-25 13:29:44,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 13:29:44,177 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 13:29:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:44,179 INFO L225 Difference]: With dead ends: 242 [2018-07-25 13:29:44,179 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 13:29:44,181 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3277, Invalid=10765, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 13:29:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 13:29:44,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 13:29:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 13:29:44,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-07-25 13:29:44,215 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2018-07-25 13:29:44,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:44,216 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-07-25 13:29:44,216 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:29:44,216 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-07-25 13:29:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 13:29:44,216 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:44,217 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 1, 1, 1, 1] [2018-07-25 13:29:44,217 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:44,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1726082109, now seen corresponding path program 76 times [2018-07-25 13:29:44,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:44,367 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 13:29:44,368 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:44,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:29:44,368 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:29:44,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:29:44,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:29:44,369 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 44 states. [2018-07-25 13:29:44,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:44,505 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-07-25 13:29:44,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 13:29:44,506 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 160 [2018-07-25 13:29:44,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:44,507 INFO L225 Difference]: With dead ends: 169 [2018-07-25 13:29:44,507 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 13:29:44,508 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 13:29:44,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 13:29:44,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2018-07-25 13:29:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 13:29:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-07-25 13:29:44,548 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-07-25 13:29:44,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:44,549 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-07-25 13:29:44,549 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:29:44,549 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-07-25 13:29:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 13:29:44,550 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:44,550 INFO L354 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-07-25 13:29:44,550 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:44,551 INFO L82 PathProgramCache]: Analyzing trace with hash 907582839, now seen corresponding path program 77 times [2018-07-25 13:29:44,551 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:44,824 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 13:29:44,824 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:44,825 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:29:44,825 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:29:44,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:29:44,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:29:44,826 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 82 states. [2018-07-25 13:29:45,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:45,498 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2018-07-25 13:29:45,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 13:29:45,498 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 13:29:45,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:45,499 INFO L225 Difference]: With dead ends: 248 [2018-07-25 13:29:45,500 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 13:29:45,501 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 13:29:45,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 13:29:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 13:29:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 13:29:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-07-25 13:29:45,539 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-07-25 13:29:45,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:45,539 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-07-25 13:29:45,539 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:29:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-07-25 13:29:45,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 13:29:45,540 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:45,540 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 40, 39, 1, 1, 1, 1] [2018-07-25 13:29:45,540 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:45,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1818644047, now seen corresponding path program 78 times [2018-07-25 13:29:45,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:45,717 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 13:29:45,717 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:45,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:29:45,718 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:29:45,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:29:45,719 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:29:45,719 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 45 states. [2018-07-25 13:29:45,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:45,913 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2018-07-25 13:29:45,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 13:29:45,913 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 164 [2018-07-25 13:29:45,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:45,914 INFO L225 Difference]: With dead ends: 173 [2018-07-25 13:29:45,914 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 13:29:45,915 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:29:45,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 13:29:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2018-07-25 13:29:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 13:29:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-07-25 13:29:45,976 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2018-07-25 13:29:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:45,976 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-07-25 13:29:45,976 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:29:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-07-25 13:29:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 13:29:45,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:45,978 INFO L354 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-07-25 13:29:45,978 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:45,978 INFO L82 PathProgramCache]: Analyzing trace with hash 334812651, now seen corresponding path program 79 times [2018-07-25 13:29:45,979 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:46,365 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 13:29:46,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:46,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:29:46,366 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:29:46,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:29:46,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:29:46,367 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 84 states. [2018-07-25 13:29:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:46,908 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2018-07-25 13:29:46,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 13:29:46,908 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 13:29:46,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:46,909 INFO L225 Difference]: With dead ends: 254 [2018-07-25 13:29:46,909 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 13:29:46,911 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3609, Invalid=11891, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 13:29:46,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 13:29:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 13:29:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 13:29:46,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-07-25 13:29:46,965 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 166 [2018-07-25 13:29:46,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:46,965 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-07-25 13:29:46,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:29:46,966 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-07-25 13:29:46,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 13:29:46,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:46,967 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 1, 1, 1, 1] [2018-07-25 13:29:46,967 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:46,967 INFO L82 PathProgramCache]: Analyzing trace with hash -436388571, now seen corresponding path program 80 times [2018-07-25 13:29:46,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:47,135 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 13:29:47,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:47,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:29:47,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:29:47,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:29:47,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:29:47,137 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 46 states. [2018-07-25 13:29:47,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:47,304 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-07-25 13:29:47,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 13:29:47,304 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 168 [2018-07-25 13:29:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:47,305 INFO L225 Difference]: With dead ends: 177 [2018-07-25 13:29:47,305 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 13:29:47,306 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 13:29:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 13:29:47,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2018-07-25 13:29:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 13:29:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-07-25 13:29:47,342 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-07-25 13:29:47,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:47,343 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-07-25 13:29:47,343 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:29:47,343 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-07-25 13:29:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 13:29:47,344 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:47,344 INFO L354 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-07-25 13:29:47,344 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:47,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1537430623, now seen corresponding path program 81 times [2018-07-25 13:29:47,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:47,621 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 13:29:47,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:47,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:29:47,622 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:29:47,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:29:47,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:29:47,623 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 86 states. [2018-07-25 13:29:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:48,174 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2018-07-25 13:29:48,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 13:29:48,174 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 13:29:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:48,175 INFO L225 Difference]: With dead ends: 260 [2018-07-25 13:29:48,175 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 13:29:48,177 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 13:29:48,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 13:29:48,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 13:29:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 13:29:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-07-25 13:29:48,215 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-07-25 13:29:48,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:48,216 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-07-25 13:29:48,216 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:29:48,216 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-07-25 13:29:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 13:29:48,217 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:48,217 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 42, 41, 1, 1, 1, 1] [2018-07-25 13:29:48,217 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:48,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1739485543, now seen corresponding path program 82 times [2018-07-25 13:29:48,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:48,342 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 13:29:48,342 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:48,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 13:29:48,343 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 13:29:48,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 13:29:48,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:29:48,344 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 47 states. [2018-07-25 13:29:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:48,528 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-07-25 13:29:48,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 13:29:48,528 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 172 [2018-07-25 13:29:48,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:48,529 INFO L225 Difference]: With dead ends: 181 [2018-07-25 13:29:48,529 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 13:29:48,530 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 13:29:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 13:29:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-07-25 13:29:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 13:29:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-07-25 13:29:48,569 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 172 [2018-07-25 13:29:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:48,569 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-07-25 13:29:48,569 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 13:29:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-07-25 13:29:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 13:29:48,570 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:48,570 INFO L354 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-07-25 13:29:48,570 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:48,570 INFO L82 PathProgramCache]: Analyzing trace with hash -903276333, now seen corresponding path program 83 times [2018-07-25 13:29:48,570 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:48,863 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 13:29:48,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:48,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:29:48,864 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:29:48,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:29:48,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:29:48,864 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 88 states. [2018-07-25 13:29:49,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:49,445 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2018-07-25 13:29:49,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 13:29:49,445 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 13:29:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:49,446 INFO L225 Difference]: With dead ends: 266 [2018-07-25 13:29:49,446 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 13:29:49,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3957, Invalid=13073, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 13:29:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 13:29:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 13:29:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 13:29:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-07-25 13:29:49,490 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-07-25 13:29:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:49,490 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-07-25 13:29:49,490 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:29:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-07-25 13:29:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 13:29:49,491 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:49,492 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 43, 42, 1, 1, 1, 1] [2018-07-25 13:29:49,492 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:49,492 INFO L82 PathProgramCache]: Analyzing trace with hash 878421517, now seen corresponding path program 84 times [2018-07-25 13:29:49,492 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:49,610 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 13:29:49,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:49,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:29:49,611 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:29:49,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:29:49,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:29:49,611 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 48 states. [2018-07-25 13:29:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:49,748 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2018-07-25 13:29:49,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 13:29:49,748 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 176 [2018-07-25 13:29:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:49,749 INFO L225 Difference]: With dead ends: 185 [2018-07-25 13:29:49,750 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 13:29:49,750 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:29:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 13:29:49,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-07-25 13:29:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 13:29:49,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-07-25 13:29:49,793 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-07-25 13:29:49,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:49,793 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-07-25 13:29:49,794 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:29:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-07-25 13:29:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 13:29:49,794 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:49,795 INFO L354 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-07-25 13:29:49,795 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:49,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1945427129, now seen corresponding path program 85 times [2018-07-25 13:29:49,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:50,108 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 13:29:50,108 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:50,108 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:29:50,108 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:29:50,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:29:50,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:29:50,110 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 90 states. [2018-07-25 13:29:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:50,758 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2018-07-25 13:29:50,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 13:29:50,758 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 13:29:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:50,759 INFO L225 Difference]: With dead ends: 272 [2018-07-25 13:29:50,759 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 13:29:50,761 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 13:29:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 13:29:50,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 13:29:50,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 13:29:50,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-07-25 13:29:50,816 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-07-25 13:29:50,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:50,816 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-07-25 13:29:50,816 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:29:50,817 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-07-25 13:29:50,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 13:29:50,817 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:50,818 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 44, 43, 1, 1, 1, 1] [2018-07-25 13:29:50,818 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1398834049, now seen corresponding path program 86 times [2018-07-25 13:29:50,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:50,969 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 13:29:50,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:50,970 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:29:50,970 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:29:50,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:29:50,971 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:29:50,971 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 49 states. [2018-07-25 13:29:51,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:51,177 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-07-25 13:29:51,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 13:29:51,177 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 180 [2018-07-25 13:29:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:51,178 INFO L225 Difference]: With dead ends: 189 [2018-07-25 13:29:51,179 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 13:29:51,180 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 13:29:51,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 13:29:51,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-07-25 13:29:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 13:29:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-07-25 13:29:51,241 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-07-25 13:29:51,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:51,241 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-07-25 13:29:51,242 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:29:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-07-25 13:29:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 13:29:51,243 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:51,243 INFO L354 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-07-25 13:29:51,243 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:51,244 INFO L82 PathProgramCache]: Analyzing trace with hash -45190213, now seen corresponding path program 87 times [2018-07-25 13:29:51,244 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:51,639 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 13:29:51,639 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:51,640 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:29:51,640 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:29:51,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:29:51,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:29:51,641 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 92 states. [2018-07-25 13:29:52,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:52,305 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2018-07-25 13:29:52,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 13:29:52,305 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 13:29:52,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:52,306 INFO L225 Difference]: With dead ends: 278 [2018-07-25 13:29:52,306 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 13:29:52,308 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 13:29:52,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 13:29:52,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 13:29:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 13:29:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-07-25 13:29:52,354 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2018-07-25 13:29:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:52,354 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-07-25 13:29:52,354 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:29:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-07-25 13:29:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 13:29:52,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:52,355 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 45, 44, 1, 1, 1, 1] [2018-07-25 13:29:52,356 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:52,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1579493109, now seen corresponding path program 88 times [2018-07-25 13:29:52,356 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:52,502 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 13:29:52,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:52,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:29:52,502 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:29:52,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:29:52,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:29:52,503 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 50 states. [2018-07-25 13:29:52,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:52,653 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2018-07-25 13:29:52,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 13:29:52,654 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 184 [2018-07-25 13:29:52,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:52,654 INFO L225 Difference]: With dead ends: 193 [2018-07-25 13:29:52,655 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 13:29:52,655 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 13:29:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 13:29:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2018-07-25 13:29:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 13:29:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-07-25 13:29:52,709 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-07-25 13:29:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:52,709 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-07-25 13:29:52,709 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:29:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-07-25 13:29:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 13:29:52,710 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:52,710 INFO L354 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-07-25 13:29:52,710 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:52,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1769474607, now seen corresponding path program 89 times [2018-07-25 13:29:52,710 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:53,077 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 13:29:53,078 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:53,078 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:29:53,078 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:29:53,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:29:53,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:29:53,079 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 94 states. [2018-07-25 13:29:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:53,798 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2018-07-25 13:29:53,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 13:29:53,798 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 13:29:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:53,799 INFO L225 Difference]: With dead ends: 284 [2018-07-25 13:29:53,799 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 13:29:53,801 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 13:29:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 13:29:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 13:29:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 13:29:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-07-25 13:29:53,858 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-07-25 13:29:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:53,859 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-07-25 13:29:53,859 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:29:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-07-25 13:29:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 13:29:53,859 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:53,860 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 46, 45, 1, 1, 1, 1] [2018-07-25 13:29:53,860 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:53,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1290702953, now seen corresponding path program 90 times [2018-07-25 13:29:53,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:54,014 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 13:29:54,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:54,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 13:29:54,015 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 13:29:54,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 13:29:54,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:29:54,015 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 51 states. [2018-07-25 13:29:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:54,224 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2018-07-25 13:29:54,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 13:29:54,224 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 188 [2018-07-25 13:29:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:54,225 INFO L225 Difference]: With dead ends: 197 [2018-07-25 13:29:54,225 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 13:29:54,226 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 13:29:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 13:29:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2018-07-25 13:29:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 13:29:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-07-25 13:29:54,277 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2018-07-25 13:29:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:54,277 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-07-25 13:29:54,277 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 13:29:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-07-25 13:29:54,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 13:29:54,279 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:54,279 INFO L354 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-07-25 13:29:54,279 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:54,279 INFO L82 PathProgramCache]: Analyzing trace with hash -879958365, now seen corresponding path program 91 times [2018-07-25 13:29:54,279 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:54,652 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 13:29:54,652 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:54,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:29:54,652 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:29:54,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:29:54,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:29:54,653 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 96 states. [2018-07-25 13:29:55,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:55,360 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2018-07-25 13:29:55,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 13:29:55,361 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 13:29:55,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:55,362 INFO L225 Difference]: With dead ends: 290 [2018-07-25 13:29:55,362 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 13:29:55,363 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 13:29:55,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 13:29:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 13:29:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 13:29:55,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-07-25 13:29:55,414 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 190 [2018-07-25 13:29:55,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:55,414 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-07-25 13:29:55,414 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:29:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-07-25 13:29:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 13:29:55,415 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:55,415 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 47, 46, 1, 1, 1, 1] [2018-07-25 13:29:55,416 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:55,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1736556509, now seen corresponding path program 92 times [2018-07-25 13:29:55,416 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:55,555 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 13:29:55,556 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:55,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:29:55,556 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:29:55,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:29:55,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:29:55,557 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 52 states. [2018-07-25 13:29:55,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:55,720 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-07-25 13:29:55,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 13:29:55,720 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 192 [2018-07-25 13:29:55,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:55,721 INFO L225 Difference]: With dead ends: 201 [2018-07-25 13:29:55,721 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 13:29:55,722 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 13:29:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 13:29:55,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-07-25 13:29:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 13:29:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-07-25 13:29:55,774 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-07-25 13:29:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:55,774 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-07-25 13:29:55,774 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:29:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-07-25 13:29:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 13:29:55,775 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:55,775 INFO L354 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-07-25 13:29:55,775 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:55,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1911420649, now seen corresponding path program 93 times [2018-07-25 13:29:55,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:56,122 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 13:29:56,123 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:56,123 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:29:56,123 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:29:56,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:29:56,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:29:56,125 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 98 states. [2018-07-25 13:29:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:56,885 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2018-07-25 13:29:56,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 13:29:56,886 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 13:29:56,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:56,887 INFO L225 Difference]: With dead ends: 296 [2018-07-25 13:29:56,887 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 13:29:56,888 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 13:29:56,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 13:29:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 13:29:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 13:29:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-07-25 13:29:56,968 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-07-25 13:29:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:56,968 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-07-25 13:29:56,968 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:29:56,968 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-07-25 13:29:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 13:29:56,969 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:56,969 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 48, 47, 1, 1, 1, 1] [2018-07-25 13:29:56,970 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:56,970 INFO L82 PathProgramCache]: Analyzing trace with hash 86226257, now seen corresponding path program 94 times [2018-07-25 13:29:56,970 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:57,212 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 13:29:57,212 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:57,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:29:57,213 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:29:57,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:29:57,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:29:57,214 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 53 states. [2018-07-25 13:29:57,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:57,498 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2018-07-25 13:29:57,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 13:29:57,498 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 196 [2018-07-25 13:29:57,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:57,499 INFO L225 Difference]: With dead ends: 205 [2018-07-25 13:29:57,499 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 13:29:57,500 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 13:29:57,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 13:29:57,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-07-25 13:29:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 13:29:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-07-25 13:29:57,557 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 196 [2018-07-25 13:29:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:57,557 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-07-25 13:29:57,557 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:29:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-07-25 13:29:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 13:29:57,558 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:57,559 INFO L354 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-07-25 13:29:57,559 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:57,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1259106699, now seen corresponding path program 95 times [2018-07-25 13:29:57,559 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:57,904 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 13:29:57,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:57,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:29:57,905 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:29:57,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:29:57,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:29:57,906 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 100 states. [2018-07-25 13:29:58,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:58,664 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2018-07-25 13:29:58,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 13:29:58,664 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 13:29:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:58,665 INFO L225 Difference]: With dead ends: 302 [2018-07-25 13:29:58,665 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 13:29:58,666 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 13:29:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 13:29:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 13:29:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 13:29:58,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-07-25 13:29:58,713 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-07-25 13:29:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:58,714 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-07-25 13:29:58,714 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:29:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-07-25 13:29:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 13:29:58,714 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:58,715 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 49, 48, 1, 1, 1, 1] [2018-07-25 13:29:58,715 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:58,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1285124293, now seen corresponding path program 96 times [2018-07-25 13:29:58,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:58,868 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 13:29:58,868 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:58,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:29:58,869 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:29:58,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:29:58,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:29:58,869 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 54 states. [2018-07-25 13:29:59,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:59,047 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2018-07-25 13:29:59,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 13:29:59,047 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 200 [2018-07-25 13:29:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:59,048 INFO L225 Difference]: With dead ends: 209 [2018-07-25 13:29:59,048 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 13:29:59,049 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 13:29:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 13:29:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2018-07-25 13:29:59,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 13:29:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-07-25 13:29:59,110 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-07-25 13:29:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:59,110 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-07-25 13:29:59,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:29:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-07-25 13:29:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 13:29:59,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:59,111 INFO L354 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-07-25 13:29:59,111 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:59,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1946083329, now seen corresponding path program 97 times [2018-07-25 13:29:59,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:59,535 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 13:29:59,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:59,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:29:59,536 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:29:59,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:29:59,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:29:59,537 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 102 states. [2018-07-25 13:30:00,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:00,336 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2018-07-25 13:30:00,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 13:30:00,336 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 13:30:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:00,338 INFO L225 Difference]: With dead ends: 308 [2018-07-25 13:30:00,338 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 13:30:00,340 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 13:30:00,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 13:30:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 13:30:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 13:30:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-07-25 13:30:00,439 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-07-25 13:30:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:00,439 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-07-25 13:30:00,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:30:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-07-25 13:30:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 13:30:00,440 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:00,441 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 50, 49, 1, 1, 1, 1] [2018-07-25 13:30:00,441 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash -198708679, now seen corresponding path program 98 times [2018-07-25 13:30:00,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:00,615 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 13:30:00,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:00,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 13:30:00,616 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 13:30:00,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 13:30:00,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:30:00,617 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 55 states. [2018-07-25 13:30:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:00,830 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-07-25 13:30:00,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 13:30:00,830 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 204 [2018-07-25 13:30:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:00,831 INFO L225 Difference]: With dead ends: 213 [2018-07-25 13:30:00,831 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 13:30:00,832 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 13:30:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 13:30:00,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2018-07-25 13:30:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 13:30:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-07-25 13:30:00,883 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-07-25 13:30:00,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:00,883 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-07-25 13:30:00,884 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 13:30:00,884 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-07-25 13:30:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 13:30:00,884 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:00,884 INFO L354 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-07-25 13:30:00,885 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:00,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1980427149, now seen corresponding path program 99 times [2018-07-25 13:30:00,885 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:01,255 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 13:30:01,255 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:01,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:30:01,256 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:30:01,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:30:01,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:30:01,257 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 104 states. [2018-07-25 13:30:01,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:01,822 INFO L93 Difference]: Finished difference Result 314 states and 316 transitions. [2018-07-25 13:30:01,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 13:30:01,822 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 13:30:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:01,823 INFO L225 Difference]: With dead ends: 314 [2018-07-25 13:30:01,823 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 13:30:01,826 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5509, Invalid=18361, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 13:30:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 13:30:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 13:30:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 13:30:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-07-25 13:30:01,893 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2018-07-25 13:30:01,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:01,893 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-07-25 13:30:01,893 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:30:01,893 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-07-25 13:30:01,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 13:30:01,894 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:01,894 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 51, 50, 1, 1, 1, 1] [2018-07-25 13:30:01,894 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:01,895 INFO L82 PathProgramCache]: Analyzing trace with hash 26491309, now seen corresponding path program 100 times [2018-07-25 13:30:01,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:02,062 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 13:30:02,062 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:02,062 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:30:02,063 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:30:02,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:30:02,063 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:30:02,063 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 56 states. [2018-07-25 13:30:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:02,254 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2018-07-25 13:30:02,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 13:30:02,254 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 208 [2018-07-25 13:30:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:02,255 INFO L225 Difference]: With dead ends: 217 [2018-07-25 13:30:02,255 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 13:30:02,256 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 13:30:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 13:30:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2018-07-25 13:30:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 13:30:02,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-07-25 13:30:02,309 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-07-25 13:30:02,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:02,309 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-07-25 13:30:02,309 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:30:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-07-25 13:30:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 13:30:02,310 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:02,310 INFO L354 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-07-25 13:30:02,310 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:02,311 INFO L82 PathProgramCache]: Analyzing trace with hash -311603481, now seen corresponding path program 101 times [2018-07-25 13:30:02,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:02,712 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 13:30:02,712 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:02,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:30:02,713 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:30:02,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:30:02,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:30:02,714 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 106 states. [2018-07-25 13:30:03,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:03,851 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2018-07-25 13:30:03,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 13:30:03,851 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 13:30:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:03,852 INFO L225 Difference]: With dead ends: 320 [2018-07-25 13:30:03,852 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 13:30:03,853 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 13:30:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 13:30:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 13:30:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 13:30:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-07-25 13:30:03,917 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-07-25 13:30:03,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:03,917 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-07-25 13:30:03,917 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:30:03,917 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-07-25 13:30:03,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 13:30:03,919 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:03,919 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 52, 51, 1, 1, 1, 1] [2018-07-25 13:30:03,919 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:03,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1977399519, now seen corresponding path program 102 times [2018-07-25 13:30:03,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:04,111 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 13:30:04,111 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:04,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:30:04,112 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:30:04,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:30:04,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:30:04,113 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 57 states. [2018-07-25 13:30:04,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:04,350 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-07-25 13:30:04,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 13:30:04,350 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 212 [2018-07-25 13:30:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:04,351 INFO L225 Difference]: With dead ends: 221 [2018-07-25 13:30:04,351 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 13:30:04,352 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 13:30:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 13:30:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-07-25 13:30:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 13:30:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-07-25 13:30:04,416 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2018-07-25 13:30:04,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:04,416 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-07-25 13:30:04,416 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:30:04,416 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-07-25 13:30:04,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 13:30:04,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:04,417 INFO L354 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-07-25 13:30:04,417 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:04,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1905340581, now seen corresponding path program 103 times [2018-07-25 13:30:04,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:04,999 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 13:30:05,000 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:05,000 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:30:05,001 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:30:05,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:30:05,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:30:05,002 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 108 states. [2018-07-25 13:30:06,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:06,059 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2018-07-25 13:30:06,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 13:30:06,059 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 13:30:06,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:06,060 INFO L225 Difference]: With dead ends: 326 [2018-07-25 13:30:06,061 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 13:30:06,063 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 13:30:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 13:30:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 13:30:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 13:30:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-07-25 13:30:06,128 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 214 [2018-07-25 13:30:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:06,128 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-07-25 13:30:06,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:30:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-07-25 13:30:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 13:30:06,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:06,130 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 53, 52, 1, 1, 1, 1] [2018-07-25 13:30:06,130 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:06,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1922701973, now seen corresponding path program 104 times [2018-07-25 13:30:06,130 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:06,314 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 13:30:06,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:06,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:30:06,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:30:06,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:30:06,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:30:06,316 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 58 states. [2018-07-25 13:30:06,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:06,558 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-07-25 13:30:06,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 13:30:06,558 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 216 [2018-07-25 13:30:06,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:06,559 INFO L225 Difference]: With dead ends: 225 [2018-07-25 13:30:06,559 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 13:30:06,560 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2916 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:30:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 13:30:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-07-25 13:30:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 13:30:06,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-07-25 13:30:06,635 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-07-25 13:30:06,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:06,635 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-07-25 13:30:06,635 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:30:06,635 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-07-25 13:30:06,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 13:30:06,636 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:06,636 INFO L354 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-07-25 13:30:06,636 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:06,636 INFO L82 PathProgramCache]: Analyzing trace with hash 880711119, now seen corresponding path program 105 times [2018-07-25 13:30:06,636 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:07,084 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 13:30:07,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:07,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:30:07,085 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:30:07,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:30:07,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:30:07,086 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 110 states. [2018-07-25 13:30:07,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:07,789 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2018-07-25 13:30:07,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 13:30:07,789 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 13:30:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:07,790 INFO L225 Difference]: With dead ends: 332 [2018-07-25 13:30:07,790 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 13:30:07,792 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6157, Invalid=20575, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:30:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 13:30:07,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 13:30:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 13:30:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-07-25 13:30:07,847 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-07-25 13:30:07,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:07,847 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-07-25 13:30:07,848 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:30:07,848 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-07-25 13:30:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 13:30:07,849 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:07,849 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 54, 53, 1, 1, 1, 1] [2018-07-25 13:30:07,849 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:07,849 INFO L82 PathProgramCache]: Analyzing trace with hash 792572937, now seen corresponding path program 106 times [2018-07-25 13:30:07,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:08,024 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 13:30:08,025 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:08,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 13:30:08,025 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 13:30:08,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 13:30:08,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:30:08,026 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 59 states. [2018-07-25 13:30:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:08,239 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-07-25 13:30:08,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 13:30:08,239 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 220 [2018-07-25 13:30:08,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:08,240 INFO L225 Difference]: With dead ends: 229 [2018-07-25 13:30:08,240 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 13:30:08,240 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 13:30:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 13:30:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2018-07-25 13:30:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 13:30:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-07-25 13:30:08,309 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 220 [2018-07-25 13:30:08,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:08,309 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-07-25 13:30:08,309 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 13:30:08,309 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-07-25 13:30:08,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 13:30:08,310 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:08,310 INFO L354 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-07-25 13:30:08,310 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:08,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1453433411, now seen corresponding path program 107 times [2018-07-25 13:30:08,310 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:08,739 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 13:30:08,739 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:08,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:30:08,739 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:30:08,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:30:08,740 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:30:08,741 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 112 states. [2018-07-25 13:30:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:09,492 INFO L93 Difference]: Finished difference Result 338 states and 340 transitions. [2018-07-25 13:30:09,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 13:30:09,492 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 13:30:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:09,492 INFO L225 Difference]: With dead ends: 338 [2018-07-25 13:30:09,493 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 13:30:09,495 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6381, Invalid=21341, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 13:30:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 13:30:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 13:30:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 13:30:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-07-25 13:30:09,554 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-07-25 13:30:09,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:09,554 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-07-25 13:30:09,554 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:30:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-07-25 13:30:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 13:30:09,555 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:09,555 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 55, 54, 1, 1, 1, 1] [2018-07-25 13:30:09,555 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:09,555 INFO L82 PathProgramCache]: Analyzing trace with hash -2083318915, now seen corresponding path program 108 times [2018-07-25 13:30:09,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:09,804 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 13:30:09,804 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:09,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:30:09,804 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:30:09,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:30:09,805 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:30:09,805 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 60 states. [2018-07-25 13:30:10,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:10,016 INFO L93 Difference]: Finished difference Result 233 states and 234 transitions. [2018-07-25 13:30:10,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 13:30:10,016 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 224 [2018-07-25 13:30:10,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:10,017 INFO L225 Difference]: With dead ends: 233 [2018-07-25 13:30:10,017 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 13:30:10,017 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 13:30:10,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 13:30:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2018-07-25 13:30:10,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 13:30:10,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-07-25 13:30:10,087 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-07-25 13:30:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:10,087 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-07-25 13:30:10,088 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:30:10,088 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-07-25 13:30:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 13:30:10,088 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:10,089 INFO L354 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-07-25 13:30:10,089 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:10,089 INFO L82 PathProgramCache]: Analyzing trace with hash -614665033, now seen corresponding path program 109 times [2018-07-25 13:30:10,089 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:10,680 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 13:30:10,680 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:10,681 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 13:30:10,681 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 13:30:10,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 13:30:10,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 13:30:10,682 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 114 states. [2018-07-25 13:30:11,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:11,223 INFO L93 Difference]: Finished difference Result 344 states and 346 transitions. [2018-07-25 13:30:11,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 13:30:11,223 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 13:30:11,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:11,224 INFO L225 Difference]: With dead ends: 344 [2018-07-25 13:30:11,224 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 13:30:11,226 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6609, Invalid=22121, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:30:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 13:30:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 13:30:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 13:30:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-07-25 13:30:11,293 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-07-25 13:30:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:11,293 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-07-25 13:30:11,293 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 13:30:11,293 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-07-25 13:30:11,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 13:30:11,294 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:11,294 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 56, 55, 1, 1, 1, 1] [2018-07-25 13:30:11,295 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:11,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1134508273, now seen corresponding path program 110 times [2018-07-25 13:30:11,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:11,509 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 13:30:11,509 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:11,509 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:30:11,509 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:30:11,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:30:11,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:30:11,510 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 61 states. [2018-07-25 13:30:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:11,729 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-07-25 13:30:11,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 13:30:11,729 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 228 [2018-07-25 13:30:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:11,730 INFO L225 Difference]: With dead ends: 237 [2018-07-25 13:30:11,730 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 13:30:11,731 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 13:30:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 13:30:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2018-07-25 13:30:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 13:30:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-07-25 13:30:11,809 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-07-25 13:30:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:11,810 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-07-25 13:30:11,810 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:30:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-07-25 13:30:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 13:30:11,811 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:11,811 INFO L354 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-07-25 13:30:11,811 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:11,812 INFO L82 PathProgramCache]: Analyzing trace with hash -659190485, now seen corresponding path program 111 times [2018-07-25 13:30:11,812 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:12,299 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 13:30:12,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:12,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 13:30:12,299 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 13:30:12,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 13:30:12,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 13:30:12,301 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 116 states. [2018-07-25 13:30:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:13,159 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2018-07-25 13:30:13,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 13:30:13,159 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 13:30:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:13,160 INFO L225 Difference]: With dead ends: 350 [2018-07-25 13:30:13,160 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 13:30:13,162 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 13:30:13,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 13:30:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 13:30:13,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 13:30:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-07-25 13:30:13,223 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 230 [2018-07-25 13:30:13,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:13,223 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-07-25 13:30:13,223 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 13:30:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-07-25 13:30:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 13:30:13,224 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:13,224 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 57, 56, 1, 1, 1, 1] [2018-07-25 13:30:13,225 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:13,225 INFO L82 PathProgramCache]: Analyzing trace with hash 291972197, now seen corresponding path program 112 times [2018-07-25 13:30:13,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:13,460 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 13:30:13,460 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:13,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:30:13,461 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:30:13,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:30:13,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:30:13,462 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 62 states. [2018-07-25 13:30:13,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:13,702 INFO L93 Difference]: Finished difference Result 241 states and 242 transitions. [2018-07-25 13:30:13,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 13:30:13,702 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 232 [2018-07-25 13:30:13,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:13,702 INFO L225 Difference]: With dead ends: 241 [2018-07-25 13:30:13,702 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 13:30:13,704 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 13:30:13,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 13:30:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 235. [2018-07-25 13:30:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 13:30:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-07-25 13:30:13,769 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-07-25 13:30:13,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:13,769 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-07-25 13:30:13,769 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:30:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-07-25 13:30:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 13:30:13,770 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:13,770 INFO L354 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-07-25 13:30:13,770 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:13,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1412459423, now seen corresponding path program 113 times [2018-07-25 13:30:13,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:14,296 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 13:30:14,296 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:14,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 13:30:14,297 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 13:30:14,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 13:30:14,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 13:30:14,298 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 118 states. [2018-07-25 13:30:15,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:15,096 INFO L93 Difference]: Finished difference Result 356 states and 358 transitions. [2018-07-25 13:30:15,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 13:30:15,096 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 13:30:15,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:15,097 INFO L225 Difference]: With dead ends: 356 [2018-07-25 13:30:15,097 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 13:30:15,099 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7077, Invalid=23723, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:30:15,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 13:30:15,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 13:30:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 13:30:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-07-25 13:30:15,173 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-07-25 13:30:15,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:15,173 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-07-25 13:30:15,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 13:30:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-07-25 13:30:15,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 13:30:15,174 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:15,174 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 58, 57, 1, 1, 1, 1] [2018-07-25 13:30:15,175 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:15,175 INFO L82 PathProgramCache]: Analyzing trace with hash 527422937, now seen corresponding path program 114 times [2018-07-25 13:30:15,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:15,403 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 13:30:15,403 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:15,404 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 13:30:15,404 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 13:30:15,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 13:30:15,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:30:15,405 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 63 states. [2018-07-25 13:30:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:15,683 INFO L93 Difference]: Finished difference Result 245 states and 246 transitions. [2018-07-25 13:30:15,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 13:30:15,683 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 236 [2018-07-25 13:30:15,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:15,683 INFO L225 Difference]: With dead ends: 245 [2018-07-25 13:30:15,683 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 13:30:15,684 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 13:30:15,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 13:30:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-07-25 13:30:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 13:30:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-07-25 13:30:15,757 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 236 [2018-07-25 13:30:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:15,757 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-07-25 13:30:15,757 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 13:30:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-07-25 13:30:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 13:30:15,758 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:15,759 INFO L354 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-07-25 13:30:15,759 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:15,759 INFO L82 PathProgramCache]: Analyzing trace with hash 47353875, now seen corresponding path program 115 times [2018-07-25 13:30:15,759 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:16,284 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 13:30:16,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:16,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 13:30:16,285 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 13:30:16,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 13:30:16,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 13:30:16,286 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 120 states. [2018-07-25 13:30:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:17,148 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2018-07-25 13:30:17,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 13:30:17,149 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 13:30:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:17,149 INFO L225 Difference]: With dead ends: 362 [2018-07-25 13:30:17,149 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 13:30:17,151 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 13:30:17,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 13:30:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 13:30:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 13:30:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-07-25 13:30:17,217 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 238 [2018-07-25 13:30:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:17,217 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-07-25 13:30:17,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 13:30:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-07-25 13:30:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 13:30:17,218 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:17,219 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 59, 58, 1, 1, 1, 1] [2018-07-25 13:30:17,219 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:17,219 INFO L82 PathProgramCache]: Analyzing trace with hash -276935347, now seen corresponding path program 116 times [2018-07-25 13:30:17,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:17,537 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 13:30:17,538 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:17,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:30:17,538 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:30:17,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:30:17,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:30:17,539 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 64 states. [2018-07-25 13:30:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:17,812 INFO L93 Difference]: Finished difference Result 249 states and 250 transitions. [2018-07-25 13:30:17,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 13:30:17,812 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 240 [2018-07-25 13:30:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:17,813 INFO L225 Difference]: With dead ends: 249 [2018-07-25 13:30:17,813 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 13:30:17,815 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3600 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:30:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 13:30:17,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 243. [2018-07-25 13:30:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 13:30:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-07-25 13:30:17,882 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-07-25 13:30:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:17,882 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-07-25 13:30:17,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:30:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-07-25 13:30:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 13:30:17,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:17,883 INFO L354 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-07-25 13:30:17,883 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:17,884 INFO L82 PathProgramCache]: Analyzing trace with hash 153156231, now seen corresponding path program 117 times [2018-07-25 13:30:17,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:18,389 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 13:30:18,390 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:18,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 13:30:18,390 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 13:30:18,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 13:30:18,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=10981, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 13:30:18,392 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 122 states. [2018-07-25 13:30:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:19,324 INFO L93 Difference]: Finished difference Result 368 states and 370 transitions. [2018-07-25 13:30:19,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 13:30:19,324 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 13:30:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:19,325 INFO L225 Difference]: With dead ends: 368 [2018-07-25 13:30:19,325 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 13:30:19,327 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7561, Invalid=25381, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:30:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 13:30:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 13:30:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 13:30:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-07-25 13:30:19,397 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-07-25 13:30:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:19,397 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-07-25 13:30:19,397 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 13:30:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-07-25 13:30:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 13:30:19,398 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:19,398 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 60, 59, 1, 1, 1, 1] [2018-07-25 13:30:19,398 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:19,398 INFO L82 PathProgramCache]: Analyzing trace with hash 316115649, now seen corresponding path program 118 times [2018-07-25 13:30:19,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:19,618 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 13:30:19,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:19,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:30:19,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:30:19,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:30:19,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:30:19,619 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 65 states. [2018-07-25 13:30:19,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:19,903 INFO L93 Difference]: Finished difference Result 253 states and 254 transitions. [2018-07-25 13:30:19,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 13:30:19,904 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 244 [2018-07-25 13:30:19,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:19,904 INFO L225 Difference]: With dead ends: 253 [2018-07-25 13:30:19,904 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 13:30:19,905 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 13:30:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 13:30:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2018-07-25 13:30:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 13:30:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-07-25 13:30:19,975 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 244 [2018-07-25 13:30:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:19,975 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-07-25 13:30:19,975 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:30:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-07-25 13:30:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 13:30:19,976 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:19,976 INFO L354 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-07-25 13:30:19,976 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:19,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1155486981, now seen corresponding path program 119 times [2018-07-25 13:30:19,977 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:20,514 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 13:30:20,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:20,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 13:30:20,515 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 13:30:20,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 13:30:20,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 13:30:20,516 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 124 states. [2018-07-25 13:30:21,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:21,453 INFO L93 Difference]: Finished difference Result 374 states and 376 transitions. [2018-07-25 13:30:21,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 13:30:21,453 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 13:30:21,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:21,454 INFO L225 Difference]: With dead ends: 374 [2018-07-25 13:30:21,454 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 13:30:21,455 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=7809, Invalid=26231, Unknown=0, NotChecked=0, Total=34040 [2018-07-25 13:30:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 13:30:21,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 13:30:21,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 13:30:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-07-25 13:30:21,530 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-07-25 13:30:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:21,530 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-07-25 13:30:21,530 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 13:30:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-07-25 13:30:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 13:30:21,531 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:21,531 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 61, 60, 1, 1, 1, 1] [2018-07-25 13:30:21,531 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:21,531 INFO L82 PathProgramCache]: Analyzing trace with hash -364868043, now seen corresponding path program 120 times [2018-07-25 13:30:21,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:21,755 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 13:30:21,755 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:21,755 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:30:21,755 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:30:21,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:30:21,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:30:21,756 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 66 states. [2018-07-25 13:30:22,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:22,006 INFO L93 Difference]: Finished difference Result 257 states and 258 transitions. [2018-07-25 13:30:22,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 13:30:22,006 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 248 [2018-07-25 13:30:22,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:22,007 INFO L225 Difference]: With dead ends: 257 [2018-07-25 13:30:22,007 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 13:30:22,008 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 13:30:22,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 13:30:22,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 251. [2018-07-25 13:30:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 13:30:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-07-25 13:30:22,086 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-07-25 13:30:22,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:22,086 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-07-25 13:30:22,086 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:30:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-07-25 13:30:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 13:30:22,087 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:22,087 INFO L354 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-07-25 13:30:22,088 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:22,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1549181295, now seen corresponding path program 121 times [2018-07-25 13:30:22,088 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:22,719 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 13:30:22,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:22,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 13:30:22,719 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 13:30:22,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 13:30:22,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 13:30:22,721 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 126 states. [2018-07-25 13:30:23,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:23,754 INFO L93 Difference]: Finished difference Result 380 states and 382 transitions. [2018-07-25 13:30:23,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 13:30:23,755 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 13:30:23,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:23,755 INFO L225 Difference]: With dead ends: 380 [2018-07-25 13:30:23,755 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 13:30:23,757 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 13:30:23,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 13:30:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 13:30:23,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 13:30:23,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-07-25 13:30:23,835 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-07-25 13:30:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:23,835 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-07-25 13:30:23,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 13:30:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-07-25 13:30:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 13:30:23,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:23,836 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 62, 61, 1, 1, 1, 1] [2018-07-25 13:30:23,837 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:23,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1711167401, now seen corresponding path program 122 times [2018-07-25 13:30:23,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:24,092 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 13:30:24,092 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:24,092 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 13:30:24,092 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 13:30:24,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 13:30:24,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:30:24,093 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 67 states. [2018-07-25 13:30:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:24,405 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2018-07-25 13:30:24,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 13:30:24,405 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 252 [2018-07-25 13:30:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:24,405 INFO L225 Difference]: With dead ends: 261 [2018-07-25 13:30:24,405 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 13:30:24,407 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 13:30:24,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 13:30:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2018-07-25 13:30:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 13:30:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-07-25 13:30:24,481 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-07-25 13:30:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:24,481 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-07-25 13:30:24,481 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 13:30:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-07-25 13:30:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 13:30:24,482 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:24,482 INFO L354 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-07-25 13:30:24,482 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:24,483 INFO L82 PathProgramCache]: Analyzing trace with hash -540549661, now seen corresponding path program 123 times [2018-07-25 13:30:24,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:25,238 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 13:30:25,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:25,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 13:30:25,238 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 13:30:25,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 13:30:25,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 13:30:25,239 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 128 states. [2018-07-25 13:30:26,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:26,204 INFO L93 Difference]: Finished difference Result 386 states and 388 transitions. [2018-07-25 13:30:26,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 13:30:26,204 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 13:30:26,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:26,205 INFO L225 Difference]: With dead ends: 386 [2018-07-25 13:30:26,205 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 13:30:26,207 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=8317, Invalid=27973, Unknown=0, NotChecked=0, Total=36290 [2018-07-25 13:30:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 13:30:26,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 13:30:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 13:30:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-07-25 13:30:26,282 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 254 [2018-07-25 13:30:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:26,282 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-07-25 13:30:26,282 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 13:30:26,282 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-07-25 13:30:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 13:30:26,283 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:26,283 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 63, 62, 1, 1, 1, 1] [2018-07-25 13:30:26,283 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:26,283 INFO L82 PathProgramCache]: Analyzing trace with hash -975837411, now seen corresponding path program 124 times [2018-07-25 13:30:26,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:26,561 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 13:30:26,561 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:26,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:30:26,562 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:30:26,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:30:26,562 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:30:26,563 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 68 states. [2018-07-25 13:30:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:26,854 INFO L93 Difference]: Finished difference Result 265 states and 266 transitions. [2018-07-25 13:30:26,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 13:30:26,854 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 256 [2018-07-25 13:30:26,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:26,854 INFO L225 Difference]: With dead ends: 265 [2018-07-25 13:30:26,855 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 13:30:26,856 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4096 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6502, Invalid=10790, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:30:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 13:30:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-07-25 13:30:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 13:30:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-07-25 13:30:26,931 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-07-25 13:30:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:26,931 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-07-25 13:30:26,931 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:30:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-07-25 13:30:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 13:30:26,932 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:26,933 INFO L354 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-07-25 13:30:26,933 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:26,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1476829097, now seen corresponding path program 125 times [2018-07-25 13:30:26,933 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:27,507 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 13:30:27,507 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:27,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 13:30:27,508 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 13:30:27,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 13:30:27,509 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4289, Invalid=12481, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 13:30:27,510 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 130 states. [2018-07-25 13:30:28,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:28,587 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2018-07-25 13:30:28,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 13:30:28,587 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 13:30:28,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:28,588 INFO L225 Difference]: With dead ends: 392 [2018-07-25 13:30:28,588 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 13:30:28,590 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 13:30:28,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 13:30:28,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 13:30:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 13:30:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-07-25 13:30:28,672 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-07-25 13:30:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:28,672 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-07-25 13:30:28,673 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 13:30:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-07-25 13:30:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 13:30:28,674 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:28,674 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 64, 63, 1, 1, 1, 1] [2018-07-25 13:30:28,674 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:28,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1493974161, now seen corresponding path program 126 times [2018-07-25 13:30:28,675 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:28,979 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 13:30:28,979 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:28,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:30:28,980 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:30:28,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:30:28,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:30:28,981 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 69 states. [2018-07-25 13:30:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:29,246 INFO L93 Difference]: Finished difference Result 269 states and 270 transitions. [2018-07-25 13:30:29,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 13:30:29,246 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 260 [2018-07-25 13:30:29,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:29,247 INFO L225 Difference]: With dead ends: 269 [2018-07-25 13:30:29,247 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 13:30:29,248 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 13:30:29,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 13:30:29,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2018-07-25 13:30:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 13:30:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-07-25 13:30:29,327 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 260 [2018-07-25 13:30:29,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:29,327 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-07-25 13:30:29,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:30:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-07-25 13:30:29,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 13:30:29,328 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:29,329 INFO L354 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-07-25 13:30:29,329 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:29,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1190144203, now seen corresponding path program 127 times [2018-07-25 13:30:29,329 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:29,913 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 13:30:29,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:29,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 13:30:29,914 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 13:30:29,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 13:30:29,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 13:30:29,915 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 132 states. [2018-07-25 13:30:30,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:30,947 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2018-07-25 13:30:30,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 13:30:30,947 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 13:30:30,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:30,947 INFO L225 Difference]: With dead ends: 398 [2018-07-25 13:30:30,948 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 13:30:30,950 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 13:30:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 13:30:31,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 13:30:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 13:30:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-07-25 13:30:31,029 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 262 [2018-07-25 13:30:31,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:31,029 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-07-25 13:30:31,029 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 13:30:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-07-25 13:30:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 13:30:31,031 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:31,031 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 65, 64, 1, 1, 1, 1] [2018-07-25 13:30:31,031 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:31,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1046894597, now seen corresponding path program 128 times [2018-07-25 13:30:31,031 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:31,287 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 13:30:31,288 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:31,288 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:30:31,288 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:30:31,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:30:31,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:30:31,289 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 70 states. [2018-07-25 13:30:31,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:31,582 INFO L93 Difference]: Finished difference Result 273 states and 274 transitions. [2018-07-25 13:30:31,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 13:30:31,582 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 264 [2018-07-25 13:30:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:31,583 INFO L225 Difference]: With dead ends: 273 [2018-07-25 13:30:31,583 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 13:30:31,584 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4356 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:30:31,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 13:30:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2018-07-25 13:30:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 13:30:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-07-25 13:30:31,665 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-07-25 13:30:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:31,666 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-07-25 13:30:31,666 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:30:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-07-25 13:30:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 13:30:31,667 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:31,667 INFO L354 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-07-25 13:30:31,667 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:31,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1043412799, now seen corresponding path program 129 times [2018-07-25 13:30:31,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:32,303 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 13:30:32,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:32,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 13:30:32,304 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 13:30:32,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 13:30:32,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13267, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 13:30:32,306 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 134 states. [2018-07-25 13:30:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:33,354 INFO L93 Difference]: Finished difference Result 404 states and 406 transitions. [2018-07-25 13:30:33,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 13:30:33,354 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 13:30:33,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:33,355 INFO L225 Difference]: With dead ends: 404 [2018-07-25 13:30:33,355 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 13:30:33,356 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6370 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9109, Invalid=30691, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:30:33,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 13:30:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 13:30:33,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 13:30:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-07-25 13:30:33,437 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-07-25 13:30:33,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:33,437 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-07-25 13:30:33,437 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 13:30:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-07-25 13:30:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 13:30:33,438 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:33,438 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 66, 65, 1, 1, 1, 1] [2018-07-25 13:30:33,438 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:33,438 INFO L82 PathProgramCache]: Analyzing trace with hash 606681465, now seen corresponding path program 130 times [2018-07-25 13:30:33,438 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:33,705 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 13:30:33,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:33,705 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 13:30:33,705 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 13:30:33,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 13:30:33,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:30:33,706 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 71 states. [2018-07-25 13:30:33,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:33,971 INFO L93 Difference]: Finished difference Result 277 states and 278 transitions. [2018-07-25 13:30:33,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 13:30:33,971 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 268 [2018-07-25 13:30:33,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:33,972 INFO L225 Difference]: With dead ends: 277 [2018-07-25 13:30:33,972 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 13:30:33,974 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4489 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:30:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 13:30:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2018-07-25 13:30:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 13:30:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-07-25 13:30:34,065 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 268 [2018-07-25 13:30:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:34,066 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-07-25 13:30:34,066 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 13:30:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-07-25 13:30:34,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 13:30:34,066 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:34,066 INFO L354 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-07-25 13:30:34,067 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:34,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1094612045, now seen corresponding path program 131 times [2018-07-25 13:30:34,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:34,678 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 13:30:34,678 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:34,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 13:30:34,679 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 13:30:34,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 13:30:34,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 13:30:34,680 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 136 states. [2018-07-25 13:30:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:35,429 INFO L93 Difference]: Finished difference Result 410 states and 412 transitions. [2018-07-25 13:30:35,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 13:30:35,430 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 13:30:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:35,430 INFO L225 Difference]: With dead ends: 410 [2018-07-25 13:30:35,430 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 13:30:35,433 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 13:30:35,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 13:30:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 13:30:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 13:30:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-07-25 13:30:35,516 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-07-25 13:30:35,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:35,516 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-07-25 13:30:35,516 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 13:30:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-07-25 13:30:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 13:30:35,517 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:35,517 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 67, 66, 1, 1, 1, 1] [2018-07-25 13:30:35,517 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:35,517 INFO L82 PathProgramCache]: Analyzing trace with hash 135913709, now seen corresponding path program 132 times [2018-07-25 13:30:35,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:35,870 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 13:30:35,870 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:35,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:30:35,871 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:30:35,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:30:35,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:30:35,871 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 72 states. [2018-07-25 13:30:36,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:36,168 INFO L93 Difference]: Finished difference Result 281 states and 282 transitions. [2018-07-25 13:30:36,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 13:30:36,168 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 272 [2018-07-25 13:30:36,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:36,169 INFO L225 Difference]: With dead ends: 281 [2018-07-25 13:30:36,169 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 13:30:36,170 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 13:30:36,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 13:30:36,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2018-07-25 13:30:36,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 13:30:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-07-25 13:30:36,263 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-07-25 13:30:36,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:36,263 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-07-25 13:30:36,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:30:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-07-25 13:30:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 13:30:36,264 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:36,264 INFO L354 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-07-25 13:30:36,265 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:36,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1764107815, now seen corresponding path program 133 times [2018-07-25 13:30:36,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:36,969 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 13:30:36,970 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:36,970 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 13:30:36,970 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 13:30:36,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 13:30:36,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4829, Invalid=14077, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 13:30:36,972 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 138 states. [2018-07-25 13:30:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:38,161 INFO L93 Difference]: Finished difference Result 416 states and 418 transitions. [2018-07-25 13:30:38,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 13:30:38,161 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 13:30:38,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:38,162 INFO L225 Difference]: With dead ends: 416 [2018-07-25 13:30:38,162 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 13:30:38,166 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 13:30:38,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 13:30:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 13:30:38,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 13:30:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-07-25 13:30:38,284 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-07-25 13:30:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:38,284 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-07-25 13:30:38,284 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 13:30:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-07-25 13:30:38,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 13:30:38,285 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:38,286 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 68, 67, 1, 1, 1, 1] [2018-07-25 13:30:38,286 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:38,286 INFO L82 PathProgramCache]: Analyzing trace with hash -142782879, now seen corresponding path program 134 times [2018-07-25 13:30:38,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:38,571 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 13:30:38,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:38,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:30:38,572 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:30:38,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:30:38,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:30:38,573 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 73 states. [2018-07-25 13:30:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:38,886 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2018-07-25 13:30:38,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 13:30:38,886 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 276 [2018-07-25 13:30:38,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:38,887 INFO L225 Difference]: With dead ends: 285 [2018-07-25 13:30:38,887 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 13:30:38,888 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 13:30:38,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 13:30:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-07-25 13:30:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 13:30:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-07-25 13:30:38,976 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-07-25 13:30:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:38,976 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-07-25 13:30:38,976 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:30:38,977 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-07-25 13:30:38,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 13:30:38,977 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:38,977 INFO L354 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-07-25 13:30:38,977 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:38,978 INFO L82 PathProgramCache]: Analyzing trace with hash 224659099, now seen corresponding path program 135 times [2018-07-25 13:30:38,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:39,662 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 13:30:39,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:39,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 13:30:39,662 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 13:30:39,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 13:30:39,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14491, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 13:30:39,664 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 140 states. [2018-07-25 13:30:40,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:40,843 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2018-07-25 13:30:40,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 13:30:40,843 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 13:30:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:40,844 INFO L225 Difference]: With dead ends: 422 [2018-07-25 13:30:40,844 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 13:30:40,847 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 13:30:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 13:30:41,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 13:30:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 13:30:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2018-07-25 13:30:41,001 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 278 [2018-07-25 13:30:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:41,001 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2018-07-25 13:30:41,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 13:30:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2018-07-25 13:30:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 13:30:41,003 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:41,003 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 69, 68, 1, 1, 1, 1] [2018-07-25 13:30:41,003 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:41,004 INFO L82 PathProgramCache]: Analyzing trace with hash -820477483, now seen corresponding path program 136 times [2018-07-25 13:30:41,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:41,312 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 13:30:41,312 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:41,312 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:30:41,313 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:30:41,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:30:41,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:30:41,314 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 74 states. [2018-07-25 13:30:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:41,625 INFO L93 Difference]: Finished difference Result 289 states and 290 transitions. [2018-07-25 13:30:41,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 13:30:41,625 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 280 [2018-07-25 13:30:41,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:41,626 INFO L225 Difference]: With dead ends: 289 [2018-07-25 13:30:41,626 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 13:30:41,628 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 13:30:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 13:30:41,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2018-07-25 13:30:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 13:30:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-07-25 13:30:41,728 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 280 [2018-07-25 13:30:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:41,729 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-07-25 13:30:41,729 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:30:41,729 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-07-25 13:30:41,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 13:30:41,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:41,730 INFO L354 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-07-25 13:30:41,730 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:41,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1795173647, now seen corresponding path program 137 times [2018-07-25 13:30:41,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:42,407 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 13:30:42,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:42,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 13:30:42,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 13:30:42,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 13:30:42,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5111, Invalid=14911, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 13:30:42,409 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 142 states. [2018-07-25 13:30:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:43,525 INFO L93 Difference]: Finished difference Result 428 states and 430 transitions. [2018-07-25 13:30:43,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 13:30:43,525 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 13:30:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:43,525 INFO L225 Difference]: With dead ends: 428 [2018-07-25 13:30:43,525 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 13:30:43,528 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10221, Invalid=34511, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:30:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 13:30:43,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 13:30:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 13:30:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2018-07-25 13:30:43,619 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 282 [2018-07-25 13:30:43,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:43,619 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2018-07-25 13:30:43,619 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 13:30:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2018-07-25 13:30:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 13:30:43,620 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:43,620 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 70, 69, 1, 1, 1, 1] [2018-07-25 13:30:43,620 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:43,620 INFO L82 PathProgramCache]: Analyzing trace with hash -80708791, now seen corresponding path program 138 times [2018-07-25 13:30:43,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:43,945 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 13:30:43,945 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:43,945 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 13:30:43,945 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 13:30:43,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 13:30:43,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:30:43,946 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand 75 states. [2018-07-25 13:30:44,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:44,228 INFO L93 Difference]: Finished difference Result 293 states and 294 transitions. [2018-07-25 13:30:44,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 13:30:44,229 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 284 [2018-07-25 13:30:44,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:44,229 INFO L225 Difference]: With dead ends: 293 [2018-07-25 13:30:44,229 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 13:30:44,231 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 13:30:44,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 13:30:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2018-07-25 13:30:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 13:30:44,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-07-25 13:30:44,325 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 284 [2018-07-25 13:30:44,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:44,325 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-07-25 13:30:44,325 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 13:30:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-07-25 13:30:44,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 13:30:44,326 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:44,326 INFO L354 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1] [2018-07-25 13:30:44,326 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:44,326 INFO L82 PathProgramCache]: Analyzing trace with hash -251684477, now seen corresponding path program 139 times [2018-07-25 13:30:44,326 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:45,019 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 13:30:45,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:45,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 13:30:45,019 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 13:30:45,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 13:30:45,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=15337, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 13:30:45,021 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 144 states. [2018-07-25 13:30:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:46,263 INFO L93 Difference]: Finished difference Result 434 states and 436 transitions. [2018-07-25 13:30:46,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 13:30:46,263 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 13:30:46,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:46,264 INFO L225 Difference]: With dead ends: 434 [2018-07-25 13:30:46,264 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 13:30:46,267 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7385 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10509, Invalid=35501, Unknown=0, NotChecked=0, Total=46010 [2018-07-25 13:30:46,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 13:30:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 13:30:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 13:30:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-07-25 13:30:46,360 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 286 [2018-07-25 13:30:46,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:46,360 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-07-25 13:30:46,360 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 13:30:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-07-25 13:30:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 13:30:46,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:46,361 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 71, 70, 1, 1, 1, 1] [2018-07-25 13:30:46,362 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:46,362 INFO L82 PathProgramCache]: Analyzing trace with hash 931805885, now seen corresponding path program 140 times [2018-07-25 13:30:46,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:46,652 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 13:30:46,652 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:46,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:30:46,652 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:30:46,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:30:46,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:30:46,653 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 76 states. [2018-07-25 13:30:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:46,994 INFO L93 Difference]: Finished difference Result 297 states and 298 transitions. [2018-07-25 13:30:46,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 13:30:46,994 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 288 [2018-07-25 13:30:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:46,995 INFO L225 Difference]: With dead ends: 297 [2018-07-25 13:30:46,995 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 13:30:46,997 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 13:30:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 13:30:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2018-07-25 13:30:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 13:30:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-07-25 13:30:47,096 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 288 [2018-07-25 13:30:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:47,096 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-07-25 13:30:47,096 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:30:47,096 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-07-25 13:30:47,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 13:30:47,097 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:47,097 INFO L354 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-07-25 13:30:47,097 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:47,097 INFO L82 PathProgramCache]: Analyzing trace with hash 2112310263, now seen corresponding path program 141 times [2018-07-25 13:30:47,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:47,924 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 13:30:47,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:47,924 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 13:30:47,925 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 13:30:47,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 13:30:47,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=15769, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 13:30:47,926 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 146 states. [2018-07-25 13:30:49,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:49,343 INFO L93 Difference]: Finished difference Result 440 states and 442 transitions. [2018-07-25 13:30:49,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 13:30:49,343 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 13:30:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:49,344 INFO L225 Difference]: With dead ends: 440 [2018-07-25 13:30:49,344 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 13:30:49,346 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7597 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=10801, Invalid=36505, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 13:30:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 13:30:49,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 13:30:49,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 13:30:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2018-07-25 13:30:49,453 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2018-07-25 13:30:49,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:49,454 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2018-07-25 13:30:49,454 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 13:30:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2018-07-25 13:30:49,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 13:30:49,455 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:49,455 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 72, 71, 1, 1, 1, 1] [2018-07-25 13:30:49,455 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:49,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1332396081, now seen corresponding path program 142 times [2018-07-25 13:30:49,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:49,798 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 13:30:49,798 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:49,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:30:49,799 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:30:49,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:30:49,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:30:49,800 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand 77 states. [2018-07-25 13:30:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:50,139 INFO L93 Difference]: Finished difference Result 301 states and 302 transitions. [2018-07-25 13:30:50,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 13:30:50,139 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 292 [2018-07-25 13:30:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:50,140 INFO L225 Difference]: With dead ends: 301 [2018-07-25 13:30:50,140 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 13:30:50,141 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 13:30:50,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 13:30:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2018-07-25 13:30:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 13:30:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-07-25 13:30:50,252 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 292 [2018-07-25 13:30:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:50,253 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-07-25 13:30:50,253 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:30:50,253 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-07-25 13:30:50,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 13:30:50,254 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:50,254 INFO L354 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1] [2018-07-25 13:30:50,254 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:50,254 INFO L82 PathProgramCache]: Analyzing trace with hash 532431979, now seen corresponding path program 143 times [2018-07-25 13:30:50,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:51,097 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 13:30:51,098 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:51,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 13:30:51,098 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 13:30:51,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 13:30:51,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5549, Invalid=16207, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 13:30:51,100 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 148 states. [2018-07-25 13:30:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:52,676 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2018-07-25 13:30:52,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 13:30:52,676 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 13:30:52,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:52,676 INFO L225 Difference]: With dead ends: 446 [2018-07-25 13:30:52,676 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 13:30:52,679 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11097, Invalid=37523, Unknown=0, NotChecked=0, Total=48620 [2018-07-25 13:30:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 13:30:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 13:30:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 13:30:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-07-25 13:30:52,783 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 294 [2018-07-25 13:30:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:52,783 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-07-25 13:30:52,783 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 13:30:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-07-25 13:30:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 13:30:52,784 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:52,784 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 73, 72, 1, 1, 1, 1] [2018-07-25 13:30:52,785 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:52,785 INFO L82 PathProgramCache]: Analyzing trace with hash -577303643, now seen corresponding path program 144 times [2018-07-25 13:30:52,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:53,088 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 13:30:53,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:53,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:30:53,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:30:53,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:30:53,089 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:30:53,089 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 78 states. [2018-07-25 13:30:53,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:53,412 INFO L93 Difference]: Finished difference Result 305 states and 306 transitions. [2018-07-25 13:30:53,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 13:30:53,412 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 296 [2018-07-25 13:30:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:53,413 INFO L225 Difference]: With dead ends: 305 [2018-07-25 13:30:53,413 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 13:30:53,415 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 13:30:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 13:30:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-07-25 13:30:53,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 13:30:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-07-25 13:30:53,516 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2018-07-25 13:30:53,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:53,516 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-07-25 13:30:53,516 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:30:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-07-25 13:30:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 13:30:53,517 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:53,517 INFO L354 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-07-25 13:30:53,517 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:53,518 INFO L82 PathProgramCache]: Analyzing trace with hash -737967393, now seen corresponding path program 145 times [2018-07-25 13:30:53,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:54,267 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 13:30:54,267 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:54,267 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 13:30:54,268 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 13:30:54,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 13:30:54,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5699, Invalid=16651, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 13:30:54,269 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 150 states. [2018-07-25 13:30:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:55,713 INFO L93 Difference]: Finished difference Result 452 states and 454 transitions. [2018-07-25 13:30:55,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 13:30:55,714 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 13:30:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:55,714 INFO L225 Difference]: With dead ends: 452 [2018-07-25 13:30:55,714 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 13:30:55,717 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 13:30:55,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 13:30:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 13:30:55,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 13:30:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2018-07-25 13:30:55,821 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 298 [2018-07-25 13:30:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:55,821 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2018-07-25 13:30:55,821 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 13:30:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2018-07-25 13:30:55,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 13:30:55,822 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:55,822 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 74, 73, 1, 1, 1, 1] [2018-07-25 13:30:55,822 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash 206839065, now seen corresponding path program 146 times [2018-07-25 13:30:55,823 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:56,209 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 13:30:56,209 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:56,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 13:30:56,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 13:30:56,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 13:30:56,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:30:56,210 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 79 states. [2018-07-25 13:30:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:56,532 INFO L93 Difference]: Finished difference Result 309 states and 310 transitions. [2018-07-25 13:30:56,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 13:30:56,533 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 300 [2018-07-25 13:30:56,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:56,534 INFO L225 Difference]: With dead ends: 309 [2018-07-25 13:30:56,534 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 13:30:56,536 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 13:30:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 13:30:56,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2018-07-25 13:30:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 13:30:56,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-07-25 13:30:56,704 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 300 [2018-07-25 13:30:56,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:56,704 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-07-25 13:30:56,704 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 13:30:56,704 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-07-25 13:30:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 13:30:56,705 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:56,705 INFO L354 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1] [2018-07-25 13:30:56,705 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:56,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1203898195, now seen corresponding path program 147 times [2018-07-25 13:30:56,706 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,505 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 13:30:57,505 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,505 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 13:30:57,506 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 13:30:57,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 13:30:57,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 13:30:57,508 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 152 states. [2018-07-25 13:30:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:58,868 INFO L93 Difference]: Finished difference Result 458 states and 460 transitions. [2018-07-25 13:30:58,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 13:30:58,868 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 13:30:58,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:58,869 INFO L225 Difference]: With dead ends: 458 [2018-07-25 13:30:58,869 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 13:30:58,873 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 13:30:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 13:30:58,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 13:30:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 13:30:58,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-07-25 13:30:58,991 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 302 [2018-07-25 13:30:58,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:58,991 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-07-25 13:30:58,991 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 13:30:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-07-25 13:30:58,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 13:30:58,992 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:58,992 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 75, 74, 1, 1, 1, 1] [2018-07-25 13:30:58,992 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:58,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1432810637, now seen corresponding path program 148 times [2018-07-25 13:30:58,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:59,379 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 13:30:59,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:59,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:30:59,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:30:59,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:30:59,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:30:59,380 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 80 states. [2018-07-25 13:30:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:59,810 INFO L93 Difference]: Finished difference Result 313 states and 314 transitions. [2018-07-25 13:30:59,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 13:30:59,810 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 304 [2018-07-25 13:30:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:59,810 INFO L225 Difference]: With dead ends: 313 [2018-07-25 13:30:59,810 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 13:30:59,811 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 13:30:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 13:30:59,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2018-07-25 13:30:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 13:30:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-07-25 13:30:59,921 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 304 [2018-07-25 13:30:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:59,921 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-07-25 13:30:59,921 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:30:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-07-25 13:30:59,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 13:30:59,922 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:59,922 INFO L354 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-07-25 13:30:59,923 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:59,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1753427513, now seen corresponding path program 149 times [2018-07-25 13:30:59,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:00,822 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 13:31:00,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:00,823 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 13:31:00,823 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 13:31:00,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 13:31:00,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6005, Invalid=17557, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 13:31:00,825 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 154 states. [2018-07-25 13:31:01,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:01,921 INFO L93 Difference]: Finished difference Result 464 states and 466 transitions. [2018-07-25 13:31:01,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 13:31:01,921 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 13:31:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:01,922 INFO L225 Difference]: With dead ends: 464 [2018-07-25 13:31:01,922 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 13:31:01,926 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 13:31:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 13:31:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 13:31:02,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 13:31:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2018-07-25 13:31:02,071 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 306 [2018-07-25 13:31:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:02,071 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2018-07-25 13:31:02,071 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 13:31:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2018-07-25 13:31:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 13:31:02,072 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:02,072 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 76, 75, 1, 1, 1, 1] [2018-07-25 13:31:02,072 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:02,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1108644353, now seen corresponding path program 150 times [2018-07-25 13:31:02,073 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:02,417 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 13:31:02,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:02,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:31:02,418 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:31:02,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:31:02,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:31:02,419 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand 81 states. [2018-07-25 13:31:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:02,776 INFO L93 Difference]: Finished difference Result 317 states and 318 transitions. [2018-07-25 13:31:02,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 13:31:02,776 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 308 [2018-07-25 13:31:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:02,777 INFO L225 Difference]: With dead ends: 317 [2018-07-25 13:31:02,777 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 13:31:02,778 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 13:31:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 13:31:02,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2018-07-25 13:31:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 13:31:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-07-25 13:31:02,889 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 308 [2018-07-25 13:31:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:02,890 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-07-25 13:31:02,890 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:31:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-07-25 13:31:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 13:31:02,891 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:02,891 INFO L354 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1] [2018-07-25 13:31:02,891 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:02,891 INFO L82 PathProgramCache]: Analyzing trace with hash 255386171, now seen corresponding path program 151 times [2018-07-25 13:31:02,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:03,782 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 13:31:03,782 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:03,782 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 13:31:03,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 13:31:03,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 13:31:03,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=18019, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 13:31:03,784 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 156 states. [2018-07-25 13:31:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:05,019 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2018-07-25 13:31:05,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 13:31:05,019 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 13:31:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:05,020 INFO L225 Difference]: With dead ends: 470 [2018-07-25 13:31:05,020 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 13:31:05,023 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 13:31:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 13:31:05,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 13:31:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 13:31:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-07-25 13:31:05,132 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 310 [2018-07-25 13:31:05,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:05,132 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-07-25 13:31:05,132 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 13:31:05,132 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-07-25 13:31:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 13:31:05,133 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:05,133 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 77, 76, 1, 1, 1, 1] [2018-07-25 13:31:05,133 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:05,133 INFO L82 PathProgramCache]: Analyzing trace with hash 723645813, now seen corresponding path program 152 times [2018-07-25 13:31:05,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:05,466 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 13:31:05,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:05,466 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:31:05,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:31:05,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:31:05,467 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:31:05,467 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 82 states. [2018-07-25 13:31:05,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:05,820 INFO L93 Difference]: Finished difference Result 321 states and 322 transitions. [2018-07-25 13:31:05,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 13:31:05,821 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 312 [2018-07-25 13:31:05,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:05,821 INFO L225 Difference]: With dead ends: 321 [2018-07-25 13:31:05,821 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 13:31:05,823 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 13:31:05,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 13:31:05,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2018-07-25 13:31:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 13:31:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-07-25 13:31:05,941 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 312 [2018-07-25 13:31:05,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:05,941 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-07-25 13:31:05,941 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:31:05,941 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-07-25 13:31:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 13:31:05,943 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:05,943 INFO L354 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-07-25 13:31:05,943 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:05,943 INFO L82 PathProgramCache]: Analyzing trace with hash -361023313, now seen corresponding path program 153 times [2018-07-25 13:31:05,943 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:06,854 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 13:31:06,854 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:06,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 13:31:06,854 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 13:31:06,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 13:31:06,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6319, Invalid=18487, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 13:31:06,856 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 158 states. [2018-07-25 13:31:08,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:08,456 INFO L93 Difference]: Finished difference Result 476 states and 478 transitions. [2018-07-25 13:31:08,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 13:31:08,456 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 13:31:08,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:08,457 INFO L225 Difference]: With dead ends: 476 [2018-07-25 13:31:08,457 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 13:31:08,459 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 13:31:08,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 13:31:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 13:31:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 13:31:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2018-07-25 13:31:08,664 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 314 [2018-07-25 13:31:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:08,665 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2018-07-25 13:31:08,665 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 13:31:08,665 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2018-07-25 13:31:08,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 13:31:08,666 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:08,667 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 78, 77, 1, 1, 1, 1] [2018-07-25 13:31:08,667 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:08,667 INFO L82 PathProgramCache]: Analyzing trace with hash -120316183, now seen corresponding path program 154 times [2018-07-25 13:31:08,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:09,084 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 13:31:09,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:09,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 13:31:09,085 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 13:31:09,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 13:31:09,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:31:09,085 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand 83 states. [2018-07-25 13:31:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:09,446 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2018-07-25 13:31:09,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 13:31:09,446 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 316 [2018-07-25 13:31:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:09,447 INFO L225 Difference]: With dead ends: 325 [2018-07-25 13:31:09,447 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 13:31:09,448 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 13:31:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 13:31:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2018-07-25 13:31:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 13:31:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-07-25 13:31:09,562 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 316 [2018-07-25 13:31:09,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:09,562 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-07-25 13:31:09,562 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 13:31:09,562 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-07-25 13:31:09,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 13:31:09,563 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:09,563 INFO L354 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 1, 1, 1, 1] [2018-07-25 13:31:09,564 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:09,564 INFO L82 PathProgramCache]: Analyzing trace with hash 340317475, now seen corresponding path program 155 times [2018-07-25 13:31:09,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:10,517 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 13:31:10,517 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:10,518 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 13:31:10,518 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 13:31:10,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 13:31:10,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6479, Invalid=18961, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 13:31:10,520 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 160 states. [2018-07-25 13:31:12,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:12,359 INFO L93 Difference]: Finished difference Result 482 states and 484 transitions. [2018-07-25 13:31:12,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 13:31:12,359 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 13:31:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:12,360 INFO L225 Difference]: With dead ends: 482 [2018-07-25 13:31:12,360 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 13:31:12,363 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9165 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=12957, Invalid=43925, Unknown=0, NotChecked=0, Total=56882 [2018-07-25 13:31:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 13:31:12,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 13:31:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 13:31:12,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-07-25 13:31:12,496 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 318 [2018-07-25 13:31:12,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:12,496 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-07-25 13:31:12,496 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 13:31:12,496 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-07-25 13:31:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 13:31:12,497 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:12,497 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 79, 78, 1, 1, 1, 1] [2018-07-25 13:31:12,498 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:12,498 INFO L82 PathProgramCache]: Analyzing trace with hash -487584163, now seen corresponding path program 156 times [2018-07-25 13:31:12,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:12,911 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 13:31:12,911 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:12,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:31:12,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:31:12,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:31:12,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:31:12,913 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 84 states. [2018-07-25 13:31:13,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:13,339 INFO L93 Difference]: Finished difference Result 329 states and 330 transitions. [2018-07-25 13:31:13,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 13:31:13,339 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 320 [2018-07-25 13:31:13,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:13,340 INFO L225 Difference]: With dead ends: 329 [2018-07-25 13:31:13,340 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 13:31:13,342 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 13:31:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 13:31:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 323. [2018-07-25 13:31:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 13:31:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-07-25 13:31:13,465 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 320 [2018-07-25 13:31:13,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:13,465 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-07-25 13:31:13,465 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:31:13,465 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-07-25 13:31:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 13:31:13,466 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:13,466 INFO L354 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-07-25 13:31:13,466 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:13,466 INFO L82 PathProgramCache]: Analyzing trace with hash -416893033, now seen corresponding path program 157 times [2018-07-25 13:31:13,466 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:14,354 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 13:31:14,354 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:14,354 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 13:31:14,354 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 13:31:14,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 13:31:14,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6641, Invalid=19441, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 13:31:14,357 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 162 states. [2018-07-25 13:31:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:16,014 INFO L93 Difference]: Finished difference Result 488 states and 490 transitions. [2018-07-25 13:31:16,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 13:31:16,014 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 13:31:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:16,014 INFO L225 Difference]: With dead ends: 488 [2018-07-25 13:31:16,014 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 13:31:16,016 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9401 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13281, Invalid=45041, Unknown=0, NotChecked=0, Total=58322 [2018-07-25 13:31:16,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 13:31:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 13:31:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 13:31:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 326 transitions. [2018-07-25 13:31:16,133 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 326 transitions. Word has length 322 [2018-07-25 13:31:16,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:16,133 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 326 transitions. [2018-07-25 13:31:16,133 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 13:31:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 326 transitions. [2018-07-25 13:31:16,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 13:31:16,134 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:16,134 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 80, 79, 1, 1, 1, 1] [2018-07-25 13:31:16,135 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:16,135 INFO L82 PathProgramCache]: Analyzing trace with hash 817546193, now seen corresponding path program 158 times [2018-07-25 13:31:16,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:16,495 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 13:31:16,495 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:16,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:31:16,496 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:31:16,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:31:16,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:31:16,496 INFO L87 Difference]: Start difference. First operand 325 states and 326 transitions. Second operand 85 states. [2018-07-25 13:31:16,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:16,880 INFO L93 Difference]: Finished difference Result 333 states and 334 transitions. [2018-07-25 13:31:16,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 13:31:16,880 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 324 [2018-07-25 13:31:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:16,881 INFO L225 Difference]: With dead ends: 333 [2018-07-25 13:31:16,881 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 13:31:16,882 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:31:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 13:31:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2018-07-25 13:31:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 13:31:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-07-25 13:31:17,004 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 324 [2018-07-25 13:31:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:17,004 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-07-25 13:31:17,004 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:31:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-07-25 13:31:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 13:31:17,005 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:17,005 INFO L354 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 1, 1, 1, 1] [2018-07-25 13:31:17,005 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:17,005 INFO L82 PathProgramCache]: Analyzing trace with hash -317071349, now seen corresponding path program 159 times [2018-07-25 13:31:17,005 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:17,980 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 13:31:17,981 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:17,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 13:31:17,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 13:31:17,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 13:31:17,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6805, Invalid=19927, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 13:31:17,983 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 164 states. [2018-07-25 13:31:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:19,161 INFO L93 Difference]: Finished difference Result 494 states and 496 transitions. [2018-07-25 13:31:19,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 13:31:19,162 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 13:31:19,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:19,162 INFO L225 Difference]: With dead ends: 494 [2018-07-25 13:31:19,162 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 13:31:19,164 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 13:31:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 13:31:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 13:31:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 13:31:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2018-07-25 13:31:19,284 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 326 [2018-07-25 13:31:19,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:19,284 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2018-07-25 13:31:19,284 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 13:31:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2018-07-25 13:31:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 13:31:19,285 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:19,285 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 81, 80, 1, 1, 1, 1] [2018-07-25 13:31:19,286 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:19,286 INFO L82 PathProgramCache]: Analyzing trace with hash -117883067, now seen corresponding path program 160 times [2018-07-25 13:31:19,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:19,656 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 13:31:19,657 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:19,657 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:31:19,657 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:31:19,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:31:19,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:31:19,658 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand 86 states. [2018-07-25 13:31:20,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:20,044 INFO L93 Difference]: Finished difference Result 337 states and 338 transitions. [2018-07-25 13:31:20,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 13:31:20,044 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 328 [2018-07-25 13:31:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:20,044 INFO L225 Difference]: With dead ends: 337 [2018-07-25 13:31:20,044 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 13:31:20,046 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 13:31:20,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 13:31:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2018-07-25 13:31:20,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 13:31:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-07-25 13:31:20,169 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 328 [2018-07-25 13:31:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:20,170 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-07-25 13:31:20,170 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:31:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-07-25 13:31:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 13:31:20,171 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:20,171 INFO L354 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-07-25 13:31:20,171 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:20,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1616425345, now seen corresponding path program 161 times [2018-07-25 13:31:20,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:21,102 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 13:31:21,102 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:21,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 13:31:21,103 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 13:31:21,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 13:31:21,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6971, Invalid=20419, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 13:31:21,105 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 166 states. [2018-07-25 13:31:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:22,954 INFO L93 Difference]: Finished difference Result 500 states and 502 transitions. [2018-07-25 13:31:22,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 13:31:22,954 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 13:31:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:22,955 INFO L225 Difference]: With dead ends: 500 [2018-07-25 13:31:22,955 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 13:31:22,957 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 13:31:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 13:31:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 13:31:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 13:31:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2018-07-25 13:31:23,147 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 330 [2018-07-25 13:31:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:23,147 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2018-07-25 13:31:23,147 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 13:31:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2018-07-25 13:31:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 13:31:23,148 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:23,148 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 82, 81, 1, 1, 1, 1] [2018-07-25 13:31:23,148 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:23,148 INFO L82 PathProgramCache]: Analyzing trace with hash -504332103, now seen corresponding path program 162 times [2018-07-25 13:31:23,148 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:23,531 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 13:31:23,531 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:23,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 13:31:23,532 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 13:31:23,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 13:31:23,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:31:23,533 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand 87 states. [2018-07-25 13:31:23,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:23,924 INFO L93 Difference]: Finished difference Result 341 states and 342 transitions. [2018-07-25 13:31:23,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 13:31:23,924 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 332 [2018-07-25 13:31:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:23,924 INFO L225 Difference]: With dead ends: 341 [2018-07-25 13:31:23,925 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 13:31:23,926 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6889 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:31:23,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 13:31:24,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2018-07-25 13:31:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 13:31:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-07-25 13:31:24,056 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 332 [2018-07-25 13:31:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:24,056 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-07-25 13:31:24,056 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 13:31:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-07-25 13:31:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 13:31:24,057 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:24,057 INFO L354 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 1, 1, 1, 1] [2018-07-25 13:31:24,057 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:24,058 INFO L82 PathProgramCache]: Analyzing trace with hash 668205811, now seen corresponding path program 163 times [2018-07-25 13:31:24,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:25,026 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 13:31:25,027 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:25,027 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 13:31:25,027 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 13:31:25,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 13:31:25,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7139, Invalid=20917, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 13:31:25,029 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 168 states. [2018-07-25 13:31:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:26,892 INFO L93 Difference]: Finished difference Result 506 states and 508 transitions. [2018-07-25 13:31:26,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 13:31:26,892 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 13:31:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:26,893 INFO L225 Difference]: With dead ends: 506 [2018-07-25 13:31:26,893 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 13:31:26,895 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 13:31:26,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 13:31:27,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 13:31:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 13:31:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-07-25 13:31:27,022 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 334 [2018-07-25 13:31:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:27,023 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-07-25 13:31:27,023 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 13:31:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-07-25 13:31:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 13:31:27,024 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:27,024 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 83, 82, 1, 1, 1, 1] [2018-07-25 13:31:27,024 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:27,024 INFO L82 PathProgramCache]: Analyzing trace with hash -513439699, now seen corresponding path program 164 times [2018-07-25 13:31:27,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:27,413 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 13:31:27,414 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:27,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:31:27,414 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:31:27,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:31:27,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:31:27,415 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 88 states. [2018-07-25 13:31:27,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:27,845 INFO L93 Difference]: Finished difference Result 345 states and 346 transitions. [2018-07-25 13:31:27,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 13:31:27,846 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 336 [2018-07-25 13:31:27,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:27,846 INFO L225 Difference]: With dead ends: 345 [2018-07-25 13:31:27,846 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 13:31:27,848 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 13:31:27,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 13:31:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-07-25 13:31:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 13:31:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-07-25 13:31:27,977 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 336 [2018-07-25 13:31:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:27,977 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-07-25 13:31:27,977 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:31:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-07-25 13:31:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 13:31:27,978 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:27,978 INFO L354 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-07-25 13:31:27,978 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:27,978 INFO L82 PathProgramCache]: Analyzing trace with hash 505740647, now seen corresponding path program 165 times [2018-07-25 13:31:27,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:28,958 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 13:31:28,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:28,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 13:31:28,959 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 13:31:28,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 13:31:28,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7309, Invalid=21421, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 13:31:28,961 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 170 states. [2018-07-25 13:31:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:30,637 INFO L93 Difference]: Finished difference Result 512 states and 514 transitions. [2018-07-25 13:31:30,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 13:31:30,637 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 13:31:30,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:30,638 INFO L225 Difference]: With dead ends: 512 [2018-07-25 13:31:30,638 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 13:31:30,640 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10375 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14617, Invalid=49645, Unknown=0, NotChecked=0, Total=64262 [2018-07-25 13:31:30,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 13:31:30,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 13:31:30,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 13:31:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2018-07-25 13:31:30,768 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 338 [2018-07-25 13:31:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:30,769 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2018-07-25 13:31:30,769 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 13:31:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2018-07-25 13:31:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 13:31:30,770 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:30,770 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 84, 83, 1, 1, 1, 1] [2018-07-25 13:31:30,770 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:30,770 INFO L82 PathProgramCache]: Analyzing trace with hash -56797791, now seen corresponding path program 166 times [2018-07-25 13:31:30,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:31,182 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 13:31:31,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:31,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:31:31,183 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:31:31,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:31:31,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:31:31,183 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand 89 states. [2018-07-25 13:31:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:31,617 INFO L93 Difference]: Finished difference Result 349 states and 350 transitions. [2018-07-25 13:31:31,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 13:31:31,617 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 340 [2018-07-25 13:31:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:31,618 INFO L225 Difference]: With dead ends: 349 [2018-07-25 13:31:31,618 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 13:31:31,619 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 13:31:31,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 13:31:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2018-07-25 13:31:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 13:31:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-07-25 13:31:31,752 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 340 [2018-07-25 13:31:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:31,752 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-07-25 13:31:31,752 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:31:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-07-25 13:31:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 13:31:31,753 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:31,753 INFO L354 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 1, 1, 1, 1] [2018-07-25 13:31:31,753 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1251950043, now seen corresponding path program 167 times [2018-07-25 13:31:31,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:32,773 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 13:31:32,774 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:32,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 13:31:32,774 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 13:31:32,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 13:31:32,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7481, Invalid=21931, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 13:31:32,776 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 172 states. [2018-07-25 13:31:34,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:34,627 INFO L93 Difference]: Finished difference Result 518 states and 520 transitions. [2018-07-25 13:31:34,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 13:31:34,627 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 13:31:34,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:34,628 INFO L225 Difference]: With dead ends: 518 [2018-07-25 13:31:34,628 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 13:31:34,631 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 13:31:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 13:31:34,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 13:31:34,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 13:31:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2018-07-25 13:31:34,762 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 342 [2018-07-25 13:31:34,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:34,763 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2018-07-25 13:31:34,763 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 13:31:34,763 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2018-07-25 13:31:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 13:31:34,764 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:34,764 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 85, 84, 1, 1, 1, 1] [2018-07-25 13:31:34,764 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:34,764 INFO L82 PathProgramCache]: Analyzing trace with hash 140306709, now seen corresponding path program 168 times [2018-07-25 13:31:34,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:35,189 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 13:31:35,190 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:35,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:31:35,190 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:31:35,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:31:35,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:31:35,191 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand 90 states. [2018-07-25 13:31:35,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:35,624 INFO L93 Difference]: Finished difference Result 353 states and 354 transitions. [2018-07-25 13:31:35,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-07-25 13:31:35,624 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 344 [2018-07-25 13:31:35,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:35,625 INFO L225 Difference]: With dead ends: 353 [2018-07-25 13:31:35,625 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 13:31:35,627 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 13:31:35,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 13:31:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 347. [2018-07-25 13:31:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 13:31:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-07-25 13:31:35,763 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 344 [2018-07-25 13:31:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:35,763 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-07-25 13:31:35,763 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:31:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-07-25 13:31:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 13:31:35,764 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:35,764 INFO L354 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-07-25 13:31:35,764 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:35,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1690813519, now seen corresponding path program 169 times [2018-07-25 13:31:35,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:36,811 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 13:31:36,811 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:36,812 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 13:31:36,812 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 13:31:36,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 13:31:36,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7655, Invalid=22447, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 13:31:36,816 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 174 states. [2018-07-25 13:31:38,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:38,538 INFO L93 Difference]: Finished difference Result 524 states and 526 transitions. [2018-07-25 13:31:38,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-07-25 13:31:38,538 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-07-25 13:31:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:38,539 INFO L225 Difference]: With dead ends: 524 [2018-07-25 13:31:38,539 INFO L226 Difference]: Without dead ends: 349 [2018-07-25 13:31:38,542 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10880 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15309, Invalid=52031, Unknown=0, NotChecked=0, Total=67340 [2018-07-25 13:31:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-07-25 13:31:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-07-25 13:31:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-07-25 13:31:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 350 transitions. [2018-07-25 13:31:38,678 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 350 transitions. Word has length 346 [2018-07-25 13:31:38,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:38,679 INFO L472 AbstractCegarLoop]: Abstraction has 349 states and 350 transitions. [2018-07-25 13:31:38,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-07-25 13:31:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 350 transitions. [2018-07-25 13:31:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-25 13:31:38,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:38,680 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 86, 85, 1, 1, 1, 1] [2018-07-25 13:31:38,680 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1760117385, now seen corresponding path program 170 times [2018-07-25 13:31:38,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:39,095 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 13:31:39,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:39,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 13:31:39,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 13:31:39,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 13:31:39,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:31:39,097 INFO L87 Difference]: Start difference. First operand 349 states and 350 transitions. Second operand 91 states. [2018-07-25 13:31:39,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:39,538 INFO L93 Difference]: Finished difference Result 357 states and 358 transitions. [2018-07-25 13:31:39,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-07-25 13:31:39,539 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 348 [2018-07-25 13:31:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:39,539 INFO L225 Difference]: With dead ends: 357 [2018-07-25 13:31:39,539 INFO L226 Difference]: Without dead ends: 355 [2018-07-25 13:31:39,541 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 13:31:39,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-07-25 13:31:39,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2018-07-25 13:31:39,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-07-25 13:31:39,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-07-25 13:31:39,681 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 348 [2018-07-25 13:31:39,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:39,681 INFO L472 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-07-25 13:31:39,681 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 13:31:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-07-25 13:31:39,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-25 13:31:39,682 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:39,682 INFO L354 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 1, 1, 1, 1] [2018-07-25 13:31:39,682 INFO L415 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:39,682 INFO L82 PathProgramCache]: Analyzing trace with hash -744255293, now seen corresponding path program 171 times [2018-07-25 13:31:39,683 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:40,785 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 13:31:40,786 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:40,786 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175] total 175 [2018-07-25 13:31:40,786 INFO L451 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-07-25 13:31:40,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-07-25 13:31:40,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7831, Invalid=22969, Unknown=0, NotChecked=0, Total=30800 [2018-07-25 13:31:40,787 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 176 states. [2018-07-25 13:31:42,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:42,898 INFO L93 Difference]: Finished difference Result 530 states and 532 transitions. [2018-07-25 13:31:42,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-07-25 13:31:42,899 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-07-25 13:31:42,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:42,899 INFO L225 Difference]: With dead ends: 530 [2018-07-25 13:31:42,899 INFO L226 Difference]: Without dead ends: 353 [2018-07-25 13:31:42,902 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 13:31:42,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-07-25 13:31:43,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-07-25 13:31:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 13:31:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2018-07-25 13:31:43,041 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 350 [2018-07-25 13:31:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:43,041 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2018-07-25 13:31:43,041 INFO L473 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-07-25 13:31:43,041 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2018-07-25 13:31:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 13:31:43,042 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:43,042 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 87, 86, 1, 1, 1, 1] [2018-07-25 13:31:43,042 INFO L415 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:43,042 INFO L82 PathProgramCache]: Analyzing trace with hash -771268099, now seen corresponding path program 172 times [2018-07-25 13:31:43,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:43,511 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 13:31:43,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:43,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:31:43,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:31:43,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:31:43,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:31:43,513 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand 92 states. [2018-07-25 13:31:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:44,024 INFO L93 Difference]: Finished difference Result 361 states and 362 transitions. [2018-07-25 13:31:44,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-07-25 13:31:44,025 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 352 [2018-07-25 13:31:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:44,026 INFO L225 Difference]: With dead ends: 361 [2018-07-25 13:31:44,026 INFO L226 Difference]: Without dead ends: 359 [2018-07-25 13:31:44,028 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 13:31:44,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-07-25 13:31:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 355. [2018-07-25 13:31:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-07-25 13:31:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-07-25 13:31:44,173 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 352 [2018-07-25 13:31:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:44,174 INFO L472 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-07-25 13:31:44,174 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:31:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-07-25 13:31:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-25 13:31:44,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:44,175 INFO L354 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-07-25 13:31:44,175 INFO L415 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:44,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1840751415, now seen corresponding path program 173 times [2018-07-25 13:31:44,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:45,279 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 13:31:45,280 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:45,280 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177] total 177 [2018-07-25 13:31:45,280 INFO L451 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-07-25 13:31:45,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-07-25 13:31:45,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8009, Invalid=23497, Unknown=0, NotChecked=0, Total=31506 [2018-07-25 13:31:45,283 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 178 states. [2018-07-25 13:31:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:47,582 INFO L93 Difference]: Finished difference Result 536 states and 538 transitions. [2018-07-25 13:31:47,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-07-25 13:31:47,582 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-07-25 13:31:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:47,583 INFO L225 Difference]: With dead ends: 536 [2018-07-25 13:31:47,583 INFO L226 Difference]: Without dead ends: 357 [2018-07-25 13:31:47,588 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11397 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=16017, Invalid=54473, Unknown=0, NotChecked=0, Total=70490 [2018-07-25 13:31:47,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-07-25 13:31:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-07-25 13:31:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-07-25 13:31:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2018-07-25 13:31:47,737 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 354 [2018-07-25 13:31:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:47,738 INFO L472 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2018-07-25 13:31:47,738 INFO L473 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-07-25 13:31:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2018-07-25 13:31:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-07-25 13:31:47,739 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:47,739 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 88, 87, 1, 1, 1, 1] [2018-07-25 13:31:47,739 INFO L415 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:47,739 INFO L82 PathProgramCache]: Analyzing trace with hash 117196657, now seen corresponding path program 174 times [2018-07-25 13:31:47,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:48,181 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 13:31:48,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:48,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:31:48,182 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:31:48,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:31:48,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:31:48,183 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 93 states. [2018-07-25 13:31:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:48,657 INFO L93 Difference]: Finished difference Result 365 states and 366 transitions. [2018-07-25 13:31:48,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-07-25 13:31:48,657 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 356 [2018-07-25 13:31:48,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:48,658 INFO L225 Difference]: With dead ends: 365 [2018-07-25 13:31:48,658 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 13:31:48,659 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 13:31:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 13:31:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2018-07-25 13:31:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-07-25 13:31:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-07-25 13:31:48,805 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 356 [2018-07-25 13:31:48,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:48,805 INFO L472 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-07-25 13:31:48,805 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:31:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-07-25 13:31:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-25 13:31:48,806 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:48,806 INFO L354 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 1, 1, 1, 1] [2018-07-25 13:31:48,807 INFO L415 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:48,807 INFO L82 PathProgramCache]: Analyzing trace with hash 956890027, now seen corresponding path program 175 times [2018-07-25 13:31:48,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:49,933 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 13:31:49,933 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:49,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179] total 179 [2018-07-25 13:31:49,933 INFO L451 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-07-25 13:31:49,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-07-25 13:31:49,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8189, Invalid=24031, Unknown=0, NotChecked=0, Total=32220 [2018-07-25 13:31:49,936 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 180 states. [2018-07-25 13:31:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:52,381 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2018-07-25 13:31:52,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-07-25 13:31:52,381 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-07-25 13:31:52,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:52,382 INFO L225 Difference]: With dead ends: 542 [2018-07-25 13:31:52,382 INFO L226 Difference]: Without dead ends: 361 [2018-07-25 13:31:52,386 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11660 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=16377, Invalid=55715, Unknown=0, NotChecked=0, Total=72092 [2018-07-25 13:31:52,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-07-25 13:31:52,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-07-25 13:31:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-07-25 13:31:52,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2018-07-25 13:31:52,533 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 358 [2018-07-25 13:31:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:52,533 INFO L472 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2018-07-25 13:31:52,533 INFO L473 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-07-25 13:31:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2018-07-25 13:31:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-25 13:31:52,534 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:52,534 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 89, 88, 1, 1, 1, 1] [2018-07-25 13:31:52,534 INFO L415 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:52,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1702038811, now seen corresponding path program 176 times [2018-07-25 13:31:52,534 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:53,021 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 13:31:53,021 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:53,021 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:31:53,021 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:31:53,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:31:53,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:31:53,023 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 94 states. [2018-07-25 13:31:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:53,583 INFO L93 Difference]: Finished difference Result 369 states and 370 transitions. [2018-07-25 13:31:53,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-07-25 13:31:53,584 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 360 [2018-07-25 13:31:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:53,584 INFO L225 Difference]: With dead ends: 369 [2018-07-25 13:31:53,584 INFO L226 Difference]: Without dead ends: 367 [2018-07-25 13:31:53,586 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:31:53,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-07-25 13:31:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 363. [2018-07-25 13:31:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-07-25 13:31:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-07-25 13:31:53,740 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 360 [2018-07-25 13:31:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:53,740 INFO L472 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-07-25 13:31:53,740 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:31:53,741 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-07-25 13:31:53,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-25 13:31:53,741 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:53,742 INFO L354 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-07-25 13:31:53,742 INFO L415 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:53,742 INFO L82 PathProgramCache]: Analyzing trace with hash 723294751, now seen corresponding path program 177 times [2018-07-25 13:31:53,742 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:54,847 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 13:31:54,847 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:54,847 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181] total 181 [2018-07-25 13:31:54,847 INFO L451 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-07-25 13:31:54,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-07-25 13:31:54,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8371, Invalid=24571, Unknown=0, NotChecked=0, Total=32942 [2018-07-25 13:31:54,850 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand 182 states. [2018-07-25 13:31:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:56,747 INFO L93 Difference]: Finished difference Result 548 states and 550 transitions. [2018-07-25 13:31:56,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-07-25 13:31:56,747 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-07-25 13:31:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:56,748 INFO L225 Difference]: With dead ends: 548 [2018-07-25 13:31:56,748 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 13:31:56,752 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11926 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=16741, Invalid=56971, Unknown=0, NotChecked=0, Total=73712 [2018-07-25 13:31:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 13:31:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-07-25 13:31:56,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 13:31:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-07-25 13:31:56,901 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 362 [2018-07-25 13:31:56,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:56,901 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-07-25 13:31:56,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-07-25 13:31:56,901 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-07-25 13:31:56,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 13:31:56,902 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:56,902 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 90, 89, 1, 1, 1, 1] [2018-07-25 13:31:56,902 INFO L415 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:56,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1359059879, now seen corresponding path program 178 times [2018-07-25 13:31:56,903 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:57,435 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 13:31:57,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:57,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 13:31:57,435 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 13:31:57,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 13:31:57,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:31:57,436 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 95 states. [2018-07-25 13:31:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:57,906 INFO L93 Difference]: Finished difference Result 373 states and 374 transitions. [2018-07-25 13:31:57,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-07-25 13:31:57,906 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 364 [2018-07-25 13:31:57,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:57,906 INFO L225 Difference]: With dead ends: 373 [2018-07-25 13:31:57,906 INFO L226 Difference]: Without dead ends: 371 [2018-07-25 13:31:57,908 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:31:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-07-25 13:31:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2018-07-25 13:31:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-07-25 13:31:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2018-07-25 13:31:58,061 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 364 [2018-07-25 13:31:58,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:58,061 INFO L472 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2018-07-25 13:31:58,061 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 13:31:58,061 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2018-07-25 13:31:58,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-25 13:31:58,062 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:58,062 INFO L354 BasicCegarLoop]: trace histogram [91, 91, 90, 90, 1, 1, 1, 1] [2018-07-25 13:31:58,063 INFO L415 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:58,063 INFO L82 PathProgramCache]: Analyzing trace with hash -386433389, now seen corresponding path program 179 times [2018-07-25 13:31:58,063 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:59,225 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 13:31:59,226 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:59,226 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183] total 183 [2018-07-25 13:31:59,226 INFO L451 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-07-25 13:31:59,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-07-25 13:31:59,228 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8555, Invalid=25117, Unknown=0, NotChecked=0, Total=33672 [2018-07-25 13:31:59,229 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 184 states. [2018-07-25 13:32:01,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:01,530 INFO L93 Difference]: Finished difference Result 554 states and 556 transitions. [2018-07-25 13:32:01,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-07-25 13:32:01,530 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-07-25 13:32:01,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:01,531 INFO L225 Difference]: With dead ends: 554 [2018-07-25 13:32:01,531 INFO L226 Difference]: Without dead ends: 369 [2018-07-25 13:32:01,533 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 13:32:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-07-25 13:32:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-07-25 13:32:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-07-25 13:32:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2018-07-25 13:32:01,686 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 366 [2018-07-25 13:32:01,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:01,687 INFO L472 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2018-07-25 13:32:01,687 INFO L473 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-07-25 13:32:01,687 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2018-07-25 13:32:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-25 13:32:01,688 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:01,688 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 91, 90, 1, 1, 1, 1] [2018-07-25 13:32:01,688 INFO L415 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:01,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1240097843, now seen corresponding path program 180 times [2018-07-25 13:32:01,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:02,156 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 13:32:02,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:02,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:32:02,157 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:32:02,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:32:02,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:32:02,158 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand 96 states. [2018-07-25 13:32:02,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:02,654 INFO L93 Difference]: Finished difference Result 377 states and 378 transitions. [2018-07-25 13:32:02,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-07-25 13:32:02,655 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 368 [2018-07-25 13:32:02,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:02,655 INFO L225 Difference]: With dead ends: 377 [2018-07-25 13:32:02,655 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 13:32:02,657 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 13:32:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 13:32:02,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 371. [2018-07-25 13:32:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-07-25 13:32:02,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2018-07-25 13:32:02,815 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 368 [2018-07-25 13:32:02,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:02,815 INFO L472 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2018-07-25 13:32:02,815 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:32:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2018-07-25 13:32:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-25 13:32:02,816 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:02,816 INFO L354 BasicCegarLoop]: trace histogram [92, 92, 91, 91, 1, 1, 1, 1] [2018-07-25 13:32:02,817 INFO L415 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:02,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2028033785, now seen corresponding path program 181 times [2018-07-25 13:32:02,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:04,071 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 13:32:04,071 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:04,071 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185] total 185 [2018-07-25 13:32:04,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-07-25 13:32:04,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-07-25 13:32:04,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8741, Invalid=25669, Unknown=0, NotChecked=0, Total=34410 [2018-07-25 13:32:04,073 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 186 states. [2018-07-25 13:32:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:05,902 INFO L93 Difference]: Finished difference Result 560 states and 562 transitions. [2018-07-25 13:32:05,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-07-25 13:32:05,902 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-07-25 13:32:05,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:05,903 INFO L225 Difference]: With dead ends: 560 [2018-07-25 13:32:05,903 INFO L226 Difference]: Without dead ends: 373 [2018-07-25 13:32:05,906 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12467 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=17481, Invalid=59525, Unknown=0, NotChecked=0, Total=77006 [2018-07-25 13:32:05,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-07-25 13:32:06,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-07-25 13:32:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-07-25 13:32:06,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 374 transitions. [2018-07-25 13:32:06,062 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 374 transitions. Word has length 370 [2018-07-25 13:32:06,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:06,062 INFO L472 AbstractCegarLoop]: Abstraction has 373 states and 374 transitions. [2018-07-25 13:32:06,062 INFO L473 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-07-25 13:32:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 374 transitions. [2018-07-25 13:32:06,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-25 13:32:06,063 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:06,063 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 92, 91, 1, 1, 1, 1] [2018-07-25 13:32:06,064 INFO L415 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:06,064 INFO L82 PathProgramCache]: Analyzing trace with hash 823630145, now seen corresponding path program 182 times [2018-07-25 13:32:06,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:06,552 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 13:32:06,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:06,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:32:06,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:32:06,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:32:06,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:32:06,554 INFO L87 Difference]: Start difference. First operand 373 states and 374 transitions. Second operand 97 states. [2018-07-25 13:32:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:07,054 INFO L93 Difference]: Finished difference Result 381 states and 382 transitions. [2018-07-25 13:32:07,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-07-25 13:32:07,054 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 372 [2018-07-25 13:32:07,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:07,055 INFO L225 Difference]: With dead ends: 381 [2018-07-25 13:32:07,055 INFO L226 Difference]: Without dead ends: 379 [2018-07-25 13:32:07,057 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8649 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:32:07,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-07-25 13:32:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2018-07-25 13:32:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-07-25 13:32:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2018-07-25 13:32:07,217 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 372 [2018-07-25 13:32:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:07,217 INFO L472 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2018-07-25 13:32:07,217 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:32:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2018-07-25 13:32:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-07-25 13:32:07,218 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:07,218 INFO L354 BasicCegarLoop]: trace histogram [93, 93, 92, 92, 1, 1, 1, 1] [2018-07-25 13:32:07,219 INFO L415 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:07,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1234639227, now seen corresponding path program 183 times [2018-07-25 13:32:07,219 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:08,475 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 13:32:08,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:08,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187] total 187 [2018-07-25 13:32:08,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-07-25 13:32:08,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-07-25 13:32:08,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8929, Invalid=26227, Unknown=0, NotChecked=0, Total=35156 [2018-07-25 13:32:08,477 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand 188 states. [2018-07-25 13:32:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:11,017 INFO L93 Difference]: Finished difference Result 566 states and 568 transitions. [2018-07-25 13:32:11,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-07-25 13:32:11,017 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-07-25 13:32:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:11,018 INFO L225 Difference]: With dead ends: 566 [2018-07-25 13:32:11,018 INFO L226 Difference]: Without dead ends: 377 [2018-07-25 13:32:11,021 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12742 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=17857, Invalid=60823, Unknown=0, NotChecked=0, Total=78680 [2018-07-25 13:32:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-07-25 13:32:11,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-07-25 13:32:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 13:32:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2018-07-25 13:32:11,179 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 374 [2018-07-25 13:32:11,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:11,180 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2018-07-25 13:32:11,180 INFO L473 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-07-25 13:32:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2018-07-25 13:32:11,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 13:32:11,181 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:11,182 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 93, 92, 1, 1, 1, 1] [2018-07-25 13:32:11,182 INFO L415 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:11,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1892244661, now seen corresponding path program 184 times [2018-07-25 13:32:11,182 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:11,705 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 13:32:11,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:11,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:32:11,706 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:32:11,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:32:11,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:32:11,707 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand 98 states. [2018-07-25 13:32:12,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:12,250 INFO L93 Difference]: Finished difference Result 385 states and 386 transitions. [2018-07-25 13:32:12,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-07-25 13:32:12,250 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 376 [2018-07-25 13:32:12,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:12,251 INFO L225 Difference]: With dead ends: 385 [2018-07-25 13:32:12,251 INFO L226 Difference]: Without dead ends: 383 [2018-07-25 13:32:12,252 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8836 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:32:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-07-25 13:32:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2018-07-25 13:32:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-07-25 13:32:12,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 380 transitions. [2018-07-25 13:32:12,413 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 380 transitions. Word has length 376 [2018-07-25 13:32:12,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:12,413 INFO L472 AbstractCegarLoop]: Abstraction has 379 states and 380 transitions. [2018-07-25 13:32:12,413 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:32:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 380 transitions. [2018-07-25 13:32:12,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-07-25 13:32:12,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:12,414 INFO L354 BasicCegarLoop]: trace histogram [94, 94, 93, 93, 1, 1, 1, 1] [2018-07-25 13:32:12,414 INFO L415 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:12,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1676005359, now seen corresponding path program 185 times [2018-07-25 13:32:12,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:13,644 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 13:32:13,644 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:13,644 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189] total 189 [2018-07-25 13:32:13,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-07-25 13:32:13,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-07-25 13:32:13,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2018-07-25 13:32:13,647 INFO L87 Difference]: Start difference. First operand 379 states and 380 transitions. Second operand 190 states. [2018-07-25 13:32:16,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:16,395 INFO L93 Difference]: Finished difference Result 572 states and 574 transitions. [2018-07-25 13:32:16,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-07-25 13:32:16,395 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-07-25 13:32:16,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:16,395 INFO L225 Difference]: With dead ends: 572 [2018-07-25 13:32:16,396 INFO L226 Difference]: Without dead ends: 381 [2018-07-25 13:32:16,399 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13020 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=18237, Invalid=62135, Unknown=0, NotChecked=0, Total=80372 [2018-07-25 13:32:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-07-25 13:32:16,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-07-25 13:32:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 13:32:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2018-07-25 13:32:16,561 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 378 [2018-07-25 13:32:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:16,561 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2018-07-25 13:32:16,561 INFO L473 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-07-25 13:32:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2018-07-25 13:32:16,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-25 13:32:16,562 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:16,562 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 94, 93, 1, 1, 1, 1] [2018-07-25 13:32:16,562 INFO L415 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:16,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1433396777, now seen corresponding path program 186 times [2018-07-25 13:32:16,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:17,115 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 13:32:17,116 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:17,116 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 13:32:17,116 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 13:32:17,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 13:32:17,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:32:17,117 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand 99 states. [2018-07-25 13:32:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:17,635 INFO L93 Difference]: Finished difference Result 389 states and 390 transitions. [2018-07-25 13:32:17,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-07-25 13:32:17,635 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 380 [2018-07-25 13:32:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:17,636 INFO L225 Difference]: With dead ends: 389 [2018-07-25 13:32:17,636 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 13:32:17,638 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9025 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:32:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 13:32:17,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2018-07-25 13:32:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-07-25 13:32:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2018-07-25 13:32:17,802 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 380 [2018-07-25 13:32:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:17,803 INFO L472 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2018-07-25 13:32:17,803 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 13:32:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2018-07-25 13:32:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-25 13:32:17,804 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:17,804 INFO L354 BasicCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1] [2018-07-25 13:32:17,804 INFO L415 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:17,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1190146973, now seen corresponding path program 187 times [2018-07-25 13:32:17,804 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:19,056 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 13:32:19,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:19,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191] total 191 [2018-07-25 13:32:19,057 INFO L451 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-07-25 13:32:19,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-07-25 13:32:19,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2018-07-25 13:32:19,059 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand 192 states. [2018-07-25 13:32:21,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:21,205 INFO L93 Difference]: Finished difference Result 578 states and 580 transitions. [2018-07-25 13:32:21,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-07-25 13:32:21,205 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-07-25 13:32:21,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:21,206 INFO L225 Difference]: With dead ends: 578 [2018-07-25 13:32:21,206 INFO L226 Difference]: Without dead ends: 385 [2018-07-25 13:32:21,209 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13301 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=18621, Invalid=63461, Unknown=0, NotChecked=0, Total=82082 [2018-07-25 13:32:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-07-25 13:32:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-07-25 13:32:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-07-25 13:32:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2018-07-25 13:32:21,372 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 382 [2018-07-25 13:32:21,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:21,372 INFO L472 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2018-07-25 13:32:21,372 INFO L473 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-07-25 13:32:21,372 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2018-07-25 13:32:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-07-25 13:32:21,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:21,374 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 95, 94, 1, 1, 1, 1] [2018-07-25 13:32:21,374 INFO L415 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:21,374 INFO L82 PathProgramCache]: Analyzing trace with hash 248526237, now seen corresponding path program 188 times [2018-07-25 13:32:21,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:21,883 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 13:32:21,884 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:21,884 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:32:21,884 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:32:21,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:32:21,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:32:21,885 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand 100 states. [2018-07-25 13:32:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:22,421 INFO L93 Difference]: Finished difference Result 393 states and 394 transitions. [2018-07-25 13:32:22,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-07-25 13:32:22,421 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 384 [2018-07-25 13:32:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:22,422 INFO L225 Difference]: With dead ends: 393 [2018-07-25 13:32:22,422 INFO L226 Difference]: Without dead ends: 391 [2018-07-25 13:32:22,424 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:32:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-07-25 13:32:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 387. [2018-07-25 13:32:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 13:32:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2018-07-25 13:32:22,593 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 384 [2018-07-25 13:32:22,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:22,593 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2018-07-25 13:32:22,594 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:32:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2018-07-25 13:32:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-25 13:32:22,595 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:22,595 INFO L354 BasicCegarLoop]: trace histogram [96, 96, 95, 95, 1, 1, 1, 1] [2018-07-25 13:32:22,596 INFO L415 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:22,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1684402473, now seen corresponding path program 189 times [2018-07-25 13:32:22,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:23,906 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 13:32:23,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:23,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193] total 193 [2018-07-25 13:32:23,907 INFO L451 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-07-25 13:32:23,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-07-25 13:32:23,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9505, Invalid=27937, Unknown=0, NotChecked=0, Total=37442 [2018-07-25 13:32:23,909 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 194 states. [2018-07-25 13:32:25,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:25,620 INFO L93 Difference]: Finished difference Result 584 states and 586 transitions. [2018-07-25 13:32:25,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-07-25 13:32:25,620 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-07-25 13:32:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:25,621 INFO L225 Difference]: With dead ends: 584 [2018-07-25 13:32:25,621 INFO L226 Difference]: Without dead ends: 389 [2018-07-25 13:32:25,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13585 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=19009, Invalid=64801, Unknown=0, NotChecked=0, Total=83810 [2018-07-25 13:32:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-07-25 13:32:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-07-25 13:32:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 13:32:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2018-07-25 13:32:25,793 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 386 [2018-07-25 13:32:25,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:25,793 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2018-07-25 13:32:25,793 INFO L473 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-07-25 13:32:25,793 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2018-07-25 13:32:25,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 13:32:25,795 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:25,795 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 96, 95, 1, 1, 1, 1] [2018-07-25 13:32:25,795 INFO L415 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:25,795 INFO L82 PathProgramCache]: Analyzing trace with hash -600880367, now seen corresponding path program 190 times [2018-07-25 13:32:25,795 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:26,319 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 13:32:26,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:26,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:32:26,319 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:32:26,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:32:26,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:32:26,321 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand 101 states. [2018-07-25 13:32:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:26,877 INFO L93 Difference]: Finished difference Result 397 states and 398 transitions. [2018-07-25 13:32:26,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-07-25 13:32:26,877 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 388 [2018-07-25 13:32:26,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:26,877 INFO L225 Difference]: With dead ends: 397 [2018-07-25 13:32:26,878 INFO L226 Difference]: Without dead ends: 395 [2018-07-25 13:32:26,879 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9409 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:32:26,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-07-25 13:32:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2018-07-25 13:32:27,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 13:32:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2018-07-25 13:32:27,097 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 388 [2018-07-25 13:32:27,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:27,097 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2018-07-25 13:32:27,097 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:32:27,097 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2018-07-25 13:32:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-25 13:32:27,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:27,099 INFO L354 BasicCegarLoop]: trace histogram [97, 97, 96, 96, 1, 1, 1, 1] [2018-07-25 13:32:27,100 INFO L415 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:27,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1920362677, now seen corresponding path program 191 times [2018-07-25 13:32:27,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:28,408 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 13:32:28,409 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:28,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195] total 195 [2018-07-25 13:32:28,409 INFO L451 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-07-25 13:32:28,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-07-25 13:32:28,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9701, Invalid=28519, Unknown=0, NotChecked=0, Total=38220 [2018-07-25 13:32:28,412 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand 196 states. [2018-07-25 13:32:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:30,580 INFO L93 Difference]: Finished difference Result 590 states and 592 transitions. [2018-07-25 13:32:30,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-07-25 13:32:30,580 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-07-25 13:32:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:30,581 INFO L225 Difference]: With dead ends: 590 [2018-07-25 13:32:30,581 INFO L226 Difference]: Without dead ends: 393 [2018-07-25 13:32:30,585 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 13:32:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-07-25 13:32:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-07-25 13:32:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-07-25 13:32:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2018-07-25 13:32:30,758 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 390 [2018-07-25 13:32:30,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:30,758 INFO L472 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2018-07-25 13:32:30,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-07-25 13:32:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2018-07-25 13:32:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-25 13:32:30,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:30,760 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 97, 96, 1, 1, 1, 1] [2018-07-25 13:32:30,760 INFO L415 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:30,760 INFO L82 PathProgramCache]: Analyzing trace with hash -867031419, now seen corresponding path program 192 times [2018-07-25 13:32:30,760 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:31,355 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 13:32:31,356 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:31,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:32:31,356 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:32:31,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:32:31,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:32:31,357 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand 102 states. [2018-07-25 13:32:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:31,918 INFO L93 Difference]: Finished difference Result 401 states and 402 transitions. [2018-07-25 13:32:31,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-07-25 13:32:31,919 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 392 [2018-07-25 13:32:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:31,919 INFO L225 Difference]: With dead ends: 401 [2018-07-25 13:32:31,919 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 13:32:31,922 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 13:32:31,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 13:32:32,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 395. [2018-07-25 13:32:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-07-25 13:32:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 396 transitions. [2018-07-25 13:32:32,096 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 396 transitions. Word has length 392 [2018-07-25 13:32:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:32,097 INFO L472 AbstractCegarLoop]: Abstraction has 395 states and 396 transitions. [2018-07-25 13:32:32,097 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:32:32,097 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 396 transitions. [2018-07-25 13:32:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-07-25 13:32:32,098 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:32,098 INFO L354 BasicCegarLoop]: trace histogram [98, 98, 97, 97, 1, 1, 1, 1] [2018-07-25 13:32:32,098 INFO L415 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:32,098 INFO L82 PathProgramCache]: Analyzing trace with hash 6514111, now seen corresponding path program 193 times [2018-07-25 13:32:32,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:33,439 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 13:32:33,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:33,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2018-07-25 13:32:33,440 INFO L451 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-07-25 13:32:33,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-07-25 13:32:33,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9899, Invalid=29107, Unknown=0, NotChecked=0, Total=39006 [2018-07-25 13:32:33,443 INFO L87 Difference]: Start difference. First operand 395 states and 396 transitions. Second operand 198 states. [2018-07-25 13:32:35,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:35,517 INFO L93 Difference]: Finished difference Result 596 states and 598 transitions. [2018-07-25 13:32:35,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-07-25 13:32:35,517 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-07-25 13:32:35,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:35,518 INFO L225 Difference]: With dead ends: 596 [2018-07-25 13:32:35,518 INFO L226 Difference]: Without dead ends: 397 [2018-07-25 13:32:35,521 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14162 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=19797, Invalid=67523, Unknown=0, NotChecked=0, Total=87320 [2018-07-25 13:32:35,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-07-25 13:32:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-07-25 13:32:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 13:32:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2018-07-25 13:32:35,696 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 394 [2018-07-25 13:32:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:35,696 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2018-07-25 13:32:35,696 INFO L473 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-07-25 13:32:35,696 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2018-07-25 13:32:35,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-25 13:32:35,697 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:35,698 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 98, 97, 1, 1, 1, 1] [2018-07-25 13:32:35,698 INFO L415 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:35,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2105395193, now seen corresponding path program 194 times [2018-07-25 13:32:35,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:36,250 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 13:32:36,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:36,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 13:32:36,251 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 13:32:36,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 13:32:36,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:32:36,251 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand 103 states. [2018-07-25 13:32:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:36,837 INFO L93 Difference]: Finished difference Result 405 states and 406 transitions. [2018-07-25 13:32:36,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-07-25 13:32:36,837 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 396 [2018-07-25 13:32:36,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:36,838 INFO L225 Difference]: With dead ends: 405 [2018-07-25 13:32:36,838 INFO L226 Difference]: Without dead ends: 403 [2018-07-25 13:32:36,840 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 13:32:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-07-25 13:32:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2018-07-25 13:32:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-07-25 13:32:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2018-07-25 13:32:37,019 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 396 [2018-07-25 13:32:37,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:37,019 INFO L472 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2018-07-25 13:32:37,019 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 13:32:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2018-07-25 13:32:37,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-25 13:32:37,020 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:37,020 INFO L354 BasicCegarLoop]: trace histogram [99, 99, 98, 98, 1, 1, 1, 1] [2018-07-25 13:32:37,020 INFO L415 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:37,021 INFO L82 PathProgramCache]: Analyzing trace with hash 355236403, now seen corresponding path program 195 times [2018-07-25 13:32:37,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:38,404 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 13:32:38,404 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:38,404 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199] total 199 [2018-07-25 13:32:38,405 INFO L451 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-07-25 13:32:38,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-07-25 13:32:38,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2018-07-25 13:32:38,407 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand 200 states. [2018-07-25 13:32:40,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:40,721 INFO L93 Difference]: Finished difference Result 602 states and 604 transitions. [2018-07-25 13:32:40,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-07-25 13:32:40,721 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-07-25 13:32:40,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:40,722 INFO L225 Difference]: With dead ends: 602 [2018-07-25 13:32:40,722 INFO L226 Difference]: Without dead ends: 401 [2018-07-25 13:32:40,727 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14455 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=20197, Invalid=68905, Unknown=0, NotChecked=0, Total=89102 [2018-07-25 13:32:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-07-25 13:32:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-07-25 13:32:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 13:32:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2018-07-25 13:32:40,906 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 398 [2018-07-25 13:32:40,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:40,906 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2018-07-25 13:32:40,906 INFO L473 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-07-25 13:32:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2018-07-25 13:32:40,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 13:32:40,908 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:40,908 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 99, 98, 1, 1, 1, 1] [2018-07-25 13:32:40,908 INFO L415 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:40,908 INFO L82 PathProgramCache]: Analyzing trace with hash -579391635, now seen corresponding path program 196 times [2018-07-25 13:32:40,908 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:41,525 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 13:32:41,525 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:41,525 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:32:41,526 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:32:41,526 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:32:41,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:32:41,527 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand 104 states. [2018-07-25 13:32:42,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:42,091 INFO L93 Difference]: Finished difference Result 409 states and 410 transitions. [2018-07-25 13:32:42,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-07-25 13:32:42,091 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 400 [2018-07-25 13:32:42,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:42,092 INFO L225 Difference]: With dead ends: 409 [2018-07-25 13:32:42,093 INFO L226 Difference]: Without dead ends: 407 [2018-07-25 13:32:42,095 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 13:32:42,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-07-25 13:32:42,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 403. [2018-07-25 13:32:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-07-25 13:32:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 404 transitions. [2018-07-25 13:32:42,283 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 404 transitions. Word has length 400 [2018-07-25 13:32:42,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:42,284 INFO L472 AbstractCegarLoop]: Abstraction has 403 states and 404 transitions. [2018-07-25 13:32:42,284 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:32:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 404 transitions. [2018-07-25 13:32:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-07-25 13:32:42,285 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:42,285 INFO L354 BasicCegarLoop]: trace histogram [100, 100, 99, 99, 1, 1, 1, 1] [2018-07-25 13:32:42,285 INFO L415 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:42,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1550439591, now seen corresponding path program 197 times [2018-07-25 13:32:42,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:43,672 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 13:32:43,672 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:43,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201] total 201 [2018-07-25 13:32:43,673 INFO L451 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-07-25 13:32:43,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-07-25 13:32:43,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10301, Invalid=30301, Unknown=0, NotChecked=0, Total=40602 [2018-07-25 13:32:43,676 INFO L87 Difference]: Start difference. First operand 403 states and 404 transitions. Second operand 202 states. [2018-07-25 13:32:45,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:45,999 INFO L93 Difference]: Finished difference Result 608 states and 610 transitions. [2018-07-25 13:32:45,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-07-25 13:32:45,999 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-07-25 13:32:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:45,999 INFO L225 Difference]: With dead ends: 608 [2018-07-25 13:32:45,999 INFO L226 Difference]: Without dead ends: 405 [2018-07-25 13:32:46,002 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14751 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=20601, Invalid=70301, Unknown=0, NotChecked=0, Total=90902 [2018-07-25 13:32:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-07-25 13:32:46,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-07-25 13:32:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-07-25 13:32:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 406 transitions. [2018-07-25 13:32:46,184 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 406 transitions. Word has length 402 [2018-07-25 13:32:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:46,184 INFO L472 AbstractCegarLoop]: Abstraction has 405 states and 406 transitions. [2018-07-25 13:32:46,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-07-25 13:32:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 406 transitions. [2018-07-25 13:32:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-25 13:32:46,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:46,185 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 100, 99, 1, 1, 1, 1] [2018-07-25 13:32:46,185 INFO L415 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash -377266975, now seen corresponding path program 198 times [2018-07-25 13:32:46,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:46,761 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 13:32:46,761 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:46,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:32:46,762 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:32:46,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:32:46,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:32:46,763 INFO L87 Difference]: Start difference. First operand 405 states and 406 transitions. Second operand 105 states. [2018-07-25 13:32:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:47,375 INFO L93 Difference]: Finished difference Result 413 states and 414 transitions. [2018-07-25 13:32:47,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-07-25 13:32:47,375 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 404 [2018-07-25 13:32:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:47,376 INFO L225 Difference]: With dead ends: 413 [2018-07-25 13:32:47,376 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 13:32:47,378 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:32:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 13:32:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2018-07-25 13:32:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-25 13:32:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2018-07-25 13:32:47,564 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 404 [2018-07-25 13:32:47,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:47,564 INFO L472 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2018-07-25 13:32:47,564 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:32:47,564 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2018-07-25 13:32:47,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-25 13:32:47,565 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:47,565 INFO L354 BasicCegarLoop]: trace histogram [101, 101, 100, 100, 1, 1, 1, 1] [2018-07-25 13:32:47,566 INFO L415 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:47,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1776257765, now seen corresponding path program 199 times [2018-07-25 13:32:47,566 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:49,011 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 13:32:49,011 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:49,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203] total 203 [2018-07-25 13:32:49,012 INFO L451 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-07-25 13:32:49,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-07-25 13:32:49,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10505, Invalid=30907, Unknown=0, NotChecked=0, Total=41412 [2018-07-25 13:32:49,014 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand 204 states. [2018-07-25 13:32:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:51,408 INFO L93 Difference]: Finished difference Result 614 states and 616 transitions. [2018-07-25 13:32:51,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-07-25 13:32:51,408 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-07-25 13:32:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:51,409 INFO L225 Difference]: With dead ends: 614 [2018-07-25 13:32:51,410 INFO L226 Difference]: Without dead ends: 409 [2018-07-25 13:32:51,415 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15050 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=21009, Invalid=71711, Unknown=0, NotChecked=0, Total=92720 [2018-07-25 13:32:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-07-25 13:32:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-07-25 13:32:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-07-25 13:32:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2018-07-25 13:32:51,604 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 406 [2018-07-25 13:32:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:51,604 INFO L472 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2018-07-25 13:32:51,604 INFO L473 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-07-25 13:32:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2018-07-25 13:32:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-25 13:32:51,605 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:51,605 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 101, 100, 1, 1, 1, 1] [2018-07-25 13:32:51,605 INFO L415 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:51,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1852264533, now seen corresponding path program 200 times [2018-07-25 13:32:51,606 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:52,246 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 13:32:52,247 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:52,247 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:32:52,247 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:32:52,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:32:52,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:32:52,248 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand 106 states. [2018-07-25 13:32:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:52,837 INFO L93 Difference]: Finished difference Result 417 states and 418 transitions. [2018-07-25 13:32:52,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-07-25 13:32:52,837 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 408 [2018-07-25 13:32:52,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:52,838 INFO L225 Difference]: With dead ends: 417 [2018-07-25 13:32:52,838 INFO L226 Difference]: Without dead ends: 415 [2018-07-25 13:32:52,840 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 13:32:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-07-25 13:32:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 411. [2018-07-25 13:32:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 13:32:53,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2018-07-25 13:32:53,028 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 408 [2018-07-25 13:32:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:53,028 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2018-07-25 13:32:53,028 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 13:32:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2018-07-25 13:32:53,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-25 13:32:53,029 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:53,030 INFO L354 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 1, 1, 1, 1] [2018-07-25 13:32:53,030 INFO L415 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:53,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1909808015, now seen corresponding path program 201 times [2018-07-25 13:32:53,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:54,466 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 13:32:54,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:54,467 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205] total 205 [2018-07-25 13:32:54,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-07-25 13:32:54,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-07-25 13:32:54,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10711, Invalid=31519, Unknown=0, NotChecked=0, Total=42230 [2018-07-25 13:32:54,470 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 206 states. [2018-07-25 13:32:56,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:56,729 INFO L93 Difference]: Finished difference Result 620 states and 622 transitions. [2018-07-25 13:32:56,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-07-25 13:32:56,729 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-07-25 13:32:56,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:56,729 INFO L225 Difference]: With dead ends: 620 [2018-07-25 13:32:56,730 INFO L226 Difference]: Without dead ends: 413 [2018-07-25 13:32:56,732 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15352 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=21421, Invalid=73135, Unknown=0, NotChecked=0, Total=94556 [2018-07-25 13:32:56,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-07-25 13:32:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-07-25 13:32:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 13:32:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2018-07-25 13:32:56,938 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 410 [2018-07-25 13:32:56,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:56,938 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2018-07-25 13:32:56,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-07-25 13:32:56,939 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2018-07-25 13:32:56,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 13:32:56,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:56,941 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 102, 101, 1, 1, 1, 1] [2018-07-25 13:32:56,941 INFO L415 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:56,941 INFO L82 PathProgramCache]: Analyzing trace with hash -932705847, now seen corresponding path program 202 times [2018-07-25 13:32:56,941 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:57,585 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 13:32:57,585 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:57,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 13:32:57,585 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 13:32:57,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 13:32:57,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 13:32:57,586 INFO L87 Difference]: Start difference. First operand 413 states and 414 transitions. Second operand 107 states. [2018-07-25 13:32:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:32:58,206 INFO L93 Difference]: Finished difference Result 421 states and 422 transitions. [2018-07-25 13:32:58,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-07-25 13:32:58,206 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 412 [2018-07-25 13:32:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:32:58,207 INFO L225 Difference]: With dead ends: 421 [2018-07-25 13:32:58,207 INFO L226 Difference]: Without dead ends: 419 [2018-07-25 13:32:58,209 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 13:32:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-07-25 13:32:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2018-07-25 13:32:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-07-25 13:32:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2018-07-25 13:32:58,404 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 412 [2018-07-25 13:32:58,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:32:58,404 INFO L472 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2018-07-25 13:32:58,404 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 13:32:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2018-07-25 13:32:58,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-25 13:32:58,405 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:32:58,405 INFO L354 BasicCegarLoop]: trace histogram [103, 103, 102, 102, 1, 1, 1, 1] [2018-07-25 13:32:58,405 INFO L415 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:32:58,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1317898243, now seen corresponding path program 203 times [2018-07-25 13:32:58,406 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:32:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:32:59,914 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 13:32:59,915 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:32:59,915 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207] total 207 [2018-07-25 13:32:59,915 INFO L451 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-07-25 13:32:59,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-07-25 13:32:59,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10919, Invalid=32137, Unknown=0, NotChecked=0, Total=43056 [2018-07-25 13:32:59,918 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand 208 states. [2018-07-25 13:33:02,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:02,345 INFO L93 Difference]: Finished difference Result 626 states and 628 transitions. [2018-07-25 13:33:02,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-07-25 13:33:02,346 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-07-25 13:33:02,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:02,346 INFO L225 Difference]: With dead ends: 626 [2018-07-25 13:33:02,346 INFO L226 Difference]: Without dead ends: 417 [2018-07-25 13:33:02,351 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15657 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=21837, Invalid=74573, Unknown=0, NotChecked=0, Total=96410 [2018-07-25 13:33:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-07-25 13:33:02,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-07-25 13:33:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-07-25 13:33:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2018-07-25 13:33:02,550 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 414 [2018-07-25 13:33:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:02,550 INFO L472 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2018-07-25 13:33:02,550 INFO L473 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-07-25 13:33:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2018-07-25 13:33:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-25 13:33:02,552 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:02,552 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 103, 102, 1, 1, 1, 1] [2018-07-25 13:33:02,552 INFO L415 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:02,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1555396291, now seen corresponding path program 204 times [2018-07-25 13:33:02,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:03,220 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 13:33:03,221 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:03,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 13:33:03,221 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 13:33:03,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 13:33:03,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 13:33:03,222 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand 108 states. [2018-07-25 13:33:03,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:03,852 INFO L93 Difference]: Finished difference Result 425 states and 426 transitions. [2018-07-25 13:33:03,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-07-25 13:33:03,852 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 416 [2018-07-25 13:33:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:03,853 INFO L225 Difference]: With dead ends: 425 [2018-07-25 13:33:03,853 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 13:33:03,855 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 13:33:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 13:33:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 419. [2018-07-25 13:33:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-25 13:33:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 420 transitions. [2018-07-25 13:33:04,051 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 420 transitions. Word has length 416 [2018-07-25 13:33:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:04,051 INFO L472 AbstractCegarLoop]: Abstraction has 419 states and 420 transitions. [2018-07-25 13:33:04,051 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 13:33:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 420 transitions. [2018-07-25 13:33:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-25 13:33:04,052 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:04,052 INFO L354 BasicCegarLoop]: trace histogram [104, 104, 103, 103, 1, 1, 1, 1] [2018-07-25 13:33:04,052 INFO L415 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:04,053 INFO L82 PathProgramCache]: Analyzing trace with hash -87164297, now seen corresponding path program 205 times [2018-07-25 13:33:04,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:05,587 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 13:33:05,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:05,587 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209] total 209 [2018-07-25 13:33:05,588 INFO L451 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-07-25 13:33:05,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-07-25 13:33:05,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11129, Invalid=32761, Unknown=0, NotChecked=0, Total=43890 [2018-07-25 13:33:05,591 INFO L87 Difference]: Start difference. First operand 419 states and 420 transitions. Second operand 210 states. [2018-07-25 13:33:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:07,776 INFO L93 Difference]: Finished difference Result 632 states and 634 transitions. [2018-07-25 13:33:07,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-07-25 13:33:07,776 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-07-25 13:33:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:07,777 INFO L225 Difference]: With dead ends: 632 [2018-07-25 13:33:07,777 INFO L226 Difference]: Without dead ends: 421 [2018-07-25 13:33:07,780 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15965 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=22257, Invalid=76025, Unknown=0, NotChecked=0, Total=98282 [2018-07-25 13:33:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-07-25 13:33:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-07-25 13:33:07,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 13:33:07,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2018-07-25 13:33:07,977 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 418 [2018-07-25 13:33:07,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:07,977 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2018-07-25 13:33:07,977 INFO L473 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-07-25 13:33:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2018-07-25 13:33:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-25 13:33:07,979 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:07,979 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 104, 103, 1, 1, 1, 1] [2018-07-25 13:33:07,979 INFO L415 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:07,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1168912719, now seen corresponding path program 206 times [2018-07-25 13:33:07,979 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:08,684 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 13:33:08,684 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:08,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 13:33:08,685 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 13:33:08,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 13:33:08,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 13:33:08,686 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand 109 states. [2018-07-25 13:33:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:09,387 INFO L93 Difference]: Finished difference Result 429 states and 430 transitions. [2018-07-25 13:33:09,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-07-25 13:33:09,387 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 420 [2018-07-25 13:33:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:09,387 INFO L225 Difference]: With dead ends: 429 [2018-07-25 13:33:09,388 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 13:33:09,390 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11025 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:33:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 13:33:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2018-07-25 13:33:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-25 13:33:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2018-07-25 13:33:09,590 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 420 [2018-07-25 13:33:09,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:09,590 INFO L472 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2018-07-25 13:33:09,590 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 13:33:09,590 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2018-07-25 13:33:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-07-25 13:33:09,591 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:09,592 INFO L354 BasicCegarLoop]: trace histogram [105, 105, 104, 104, 1, 1, 1, 1] [2018-07-25 13:33:09,592 INFO L415 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:09,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1956360939, now seen corresponding path program 207 times [2018-07-25 13:33:09,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:11,165 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 13:33:11,166 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:11,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211] total 211 [2018-07-25 13:33:11,166 INFO L451 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-07-25 13:33:11,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-07-25 13:33:11,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11341, Invalid=33391, Unknown=0, NotChecked=0, Total=44732 [2018-07-25 13:33:11,169 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand 212 states. [2018-07-25 13:33:13,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:13,092 INFO L93 Difference]: Finished difference Result 638 states and 640 transitions. [2018-07-25 13:33:13,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-07-25 13:33:13,092 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-07-25 13:33:13,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:13,093 INFO L225 Difference]: With dead ends: 638 [2018-07-25 13:33:13,093 INFO L226 Difference]: Without dead ends: 425 [2018-07-25 13:33:13,098 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16276 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=22681, Invalid=77491, Unknown=0, NotChecked=0, Total=100172 [2018-07-25 13:33:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-07-25 13:33:13,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-07-25 13:33:13,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 13:33:13,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2018-07-25 13:33:13,300 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 422 [2018-07-25 13:33:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:13,300 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2018-07-25 13:33:13,300 INFO L473 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-07-25 13:33:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2018-07-25 13:33:13,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 13:33:13,301 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:13,301 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 105, 104, 1, 1, 1, 1] [2018-07-25 13:33:13,301 INFO L415 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:13,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1740056027, now seen corresponding path program 208 times [2018-07-25 13:33:13,302 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:14,022 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 13:33:14,022 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:14,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 13:33:14,023 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 13:33:14,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 13:33:14,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5888, Invalid=6102, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 13:33:14,024 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand 110 states. [2018-07-25 13:33:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:14,706 INFO L93 Difference]: Finished difference Result 433 states and 434 transitions. [2018-07-25 13:33:14,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-07-25 13:33:14,706 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 424 [2018-07-25 13:33:14,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:14,707 INFO L225 Difference]: With dead ends: 433 [2018-07-25 13:33:14,707 INFO L226 Difference]: Without dead ends: 431 [2018-07-25 13:33:14,709 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17443, Invalid=28997, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:33:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-07-25 13:33:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 427. [2018-07-25 13:33:14,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 13:33:14,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 428 transitions. [2018-07-25 13:33:14,914 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 428 transitions. Word has length 424 [2018-07-25 13:33:14,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:14,914 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 428 transitions. [2018-07-25 13:33:14,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 13:33:14,914 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 428 transitions. [2018-07-25 13:33:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-25 13:33:14,915 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:14,916 INFO L354 BasicCegarLoop]: trace histogram [106, 106, 105, 105, 1, 1, 1, 1] [2018-07-25 13:33:14,916 INFO L415 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:14,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1451511457, now seen corresponding path program 209 times [2018-07-25 13:33:14,916 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 11130 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:16,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:16,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213] total 213 [2018-07-25 13:33:16,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-07-25 13:33:16,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-07-25 13:33:16,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11555, Invalid=34027, Unknown=0, NotChecked=0, Total=45582 [2018-07-25 13:33:16,561 INFO L87 Difference]: Start difference. First operand 427 states and 428 transitions. Second operand 214 states. [2018-07-25 13:33:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:19,316 INFO L93 Difference]: Finished difference Result 644 states and 646 transitions. [2018-07-25 13:33:19,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-07-25 13:33:19,316 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-07-25 13:33:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:19,317 INFO L225 Difference]: With dead ends: 644 [2018-07-25 13:33:19,317 INFO L226 Difference]: Without dead ends: 429 [2018-07-25 13:33:19,322 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16590 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=23109, Invalid=78971, Unknown=0, NotChecked=0, Total=102080 [2018-07-25 13:33:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-25 13:33:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-07-25 13:33:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-07-25 13:33:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 430 transitions. [2018-07-25 13:33:19,527 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 430 transitions. Word has length 426 [2018-07-25 13:33:19,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:19,527 INFO L472 AbstractCegarLoop]: Abstraction has 429 states and 430 transitions. [2018-07-25 13:33:19,527 INFO L473 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-07-25 13:33:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 430 transitions. [2018-07-25 13:33:19,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-07-25 13:33:19,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:19,529 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 106, 105, 1, 1, 1, 1] [2018-07-25 13:33:19,529 INFO L415 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:19,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1466870681, now seen corresponding path program 210 times [2018-07-25 13:33:19,529 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 22472 backedges. 11342 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:20,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:20,186 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 13:33:20,187 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 13:33:20,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 13:33:20,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 13:33:20,188 INFO L87 Difference]: Start difference. First operand 429 states and 430 transitions. Second operand 111 states. [2018-07-25 13:33:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:20,904 INFO L93 Difference]: Finished difference Result 437 states and 438 transitions. [2018-07-25 13:33:20,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-07-25 13:33:20,904 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 428 [2018-07-25 13:33:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:20,905 INFO L225 Difference]: With dead ends: 437 [2018-07-25 13:33:20,905 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 13:33:20,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11449 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2018-07-25 13:33:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 13:33:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2018-07-25 13:33:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-07-25 13:33:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2018-07-25 13:33:21,168 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 428 [2018-07-25 13:33:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:21,168 INFO L472 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2018-07-25 13:33:21,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 13:33:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2018-07-25 13:33:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-25 13:33:21,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:21,170 INFO L354 BasicCegarLoop]: trace histogram [107, 107, 106, 106, 1, 1, 1, 1] [2018-07-25 13:33:21,170 INFO L415 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:21,170 INFO L82 PathProgramCache]: Analyzing trace with hash 913503699, now seen corresponding path program 211 times [2018-07-25 13:33:21,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 11342 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:22,796 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:22,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215] total 215 [2018-07-25 13:33:22,796 INFO L451 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-07-25 13:33:22,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-07-25 13:33:22,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11771, Invalid=34669, Unknown=0, NotChecked=0, Total=46440 [2018-07-25 13:33:22,800 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand 216 states. [2018-07-25 13:33:24,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:24,895 INFO L93 Difference]: Finished difference Result 650 states and 652 transitions. [2018-07-25 13:33:24,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-07-25 13:33:24,895 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 430 [2018-07-25 13:33:24,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:24,896 INFO L225 Difference]: With dead ends: 650 [2018-07-25 13:33:24,896 INFO L226 Difference]: Without dead ends: 433 [2018-07-25 13:33:24,898 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16907 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=23541, Invalid=80465, Unknown=0, NotChecked=0, Total=104006 [2018-07-25 13:33:24,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-07-25 13:33:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-07-25 13:33:25,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-07-25 13:33:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2018-07-25 13:33:25,107 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 430 [2018-07-25 13:33:25,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:25,107 INFO L472 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2018-07-25 13:33:25,107 INFO L473 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-07-25 13:33:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2018-07-25 13:33:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-25 13:33:25,108 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:25,108 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 107, 106, 1, 1, 1, 1] [2018-07-25 13:33:25,108 INFO L415 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:25,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1636451085, now seen corresponding path program 212 times [2018-07-25 13:33:25,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:33:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 22898 backedges. 11556 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:33:25,784 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:33:25,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 13:33:25,784 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 13:33:25,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 13:33:25,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 13:33:25,785 INFO L87 Difference]: Start difference. First operand 433 states and 434 transitions. Second operand 112 states. [2018-07-25 13:33:26,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:33:26,539 INFO L93 Difference]: Finished difference Result 441 states and 442 transitions. [2018-07-25 13:33:26,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-07-25 13:33:26,539 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 432 [2018-07-25 13:33:26,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:33:26,540 INFO L225 Difference]: With dead ends: 441 [2018-07-25 13:33:26,540 INFO L226 Difference]: Without dead ends: 439 [2018-07-25 13:33:26,542 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11664 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2018-07-25 13:33:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-25 13:33:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 435. [2018-07-25 13:33:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-07-25 13:33:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 436 transitions. [2018-07-25 13:33:26,755 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 436 transitions. Word has length 432 [2018-07-25 13:33:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:33:26,756 INFO L472 AbstractCegarLoop]: Abstraction has 435 states and 436 transitions. [2018-07-25 13:33:26,756 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 13:33:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 436 transitions. [2018-07-25 13:33:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-07-25 13:33:26,757 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:33:26,757 INFO L354 BasicCegarLoop]: trace histogram [108, 108, 107, 107, 1, 1, 1, 1] [2018-07-25 13:33:26,757 INFO L415 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:33:26,757 INFO L82 PathProgramCache]: Analyzing trace with hash 671514695, now seen corresponding path program 213 times [2018-07-25 13:33:26,758 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:33:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-25 13:33:27,365 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:33:27,418 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:33:27,418 INFO L202 PluginConnector]: Adding new model seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:33:27 BoogieIcfgContainer [2018-07-25 13:33:27,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:33:27,419 INFO L168 Benchmark]: Toolchain (without parser) took 254019.83 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-25 13:33:27,423 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 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 13:33:27,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.38 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 13:33:27,424 INFO L168 Benchmark]: Boogie Preprocessor took 21.28 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 13:33:27,424 INFO L168 Benchmark]: RCFGBuilder took 264.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:33:27,425 INFO L168 Benchmark]: TraceAbstraction took 253688.33 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-25 13:33:27,431 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 0.18 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 40.38 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 21.28 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 264.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253688.33 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 80). Cancelled while BasicCegarLoop was analyzing trace of length 435 with TraceHistMax 108, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 100 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 253.6s OverallTime, 215 OverallIterations, 108 TraceHistogramMax, 139.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6743 SDtfs, 3178 SDslu, 31171 SDs, 0 SdLazy, 404240 SolverSat, 21699 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35202 GetRequests, 5885 SyntacticMatches, 0 SemanticMatches, 29317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032548 ImplicationChecksByTransitivity, 102.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=435occurred in iteration=214, 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: 17.7s AutomataMinimizationTime, 214 MinimizatonAttempts, 428 StatesRemovedByMinimization, 107 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 15.8s SatisfiabilityAnalysisTime, 65.2s InterpolantComputationTime, 46866 NumberOfCodeBlocks, 46866 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 46652 ConstructedInterpolants, 0 QuantifiedInterpolants, 60187972 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 214 InterpolantComputations, 2 PerfectInterpolantSequences, 828180/1644804 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_13-33-27-445.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_13-33-27-445.csv Completed graceful shutdown