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/nested1.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:26:53,204 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:26:53,206 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:26:53,218 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:26:53,219 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:26:53,220 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:26:53,221 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:26:53,223 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:26:53,225 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:26:53,226 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:26:53,226 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:26:53,227 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:26:53,228 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:26:53,229 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:26:53,230 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:26:53,231 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:26:53,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:26:53,233 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:26:53,235 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:26:53,237 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:26:53,238 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:26:53,239 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:26:53,241 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:26:53,242 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:26:53,242 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:26:53,243 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:26:53,244 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:26:53,245 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:26:53,245 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:26:53,247 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:26:53,247 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:26:53,248 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 13:26:53,248 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 13:26:53,248 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 13:26:53,249 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 13:26:53,250 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 13:26:53,250 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:26:53,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:26:53,264 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:26:53,269 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:26:53,269 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:26:53,270 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:26:53,270 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:26:53,270 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:26:53,270 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:26:53,345 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:26:53,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:26:53,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:26:53,379 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:26:53,380 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:26:53,380 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested1.i_4.bpl [2018-07-25 13:26:53,381 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested1.i_4.bpl' [2018-07-25 13:26:53,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:26:53,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:26:53,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:26:53,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:26:53,443 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:26:53,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/1) ... [2018-07-25 13:26:53,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/1) ... [2018-07-25 13:26:53,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:26:53,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:26:53,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:26:53,482 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:26:53,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/1) ... [2018-07-25 13:26:53,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/1) ... [2018-07-25 13:26:53,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/1) ... [2018-07-25 13:26:53,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/1) ... [2018-07-25 13:26:53,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/1) ... [2018-07-25 13:26:53,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/1) ... [2018-07-25 13:26:53,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/1) ... [2018-07-25 13:26:53,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:26:53,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:26:53,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:26:53,503 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:26:53,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/1) ... [2018-07-25 13:26:53,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:26:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:26:53,778 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:26:53,781 INFO L202 PluginConnector]: Adding new model nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:26:53 BoogieIcfgContainer [2018-07-25 13:26:53,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:26:53,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:26:53,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:26:53,786 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:26:53,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:26:53" (1/2) ... [2018-07-25 13:26:53,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fad272 and model type nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:26:53, skipping insertion in model container [2018-07-25 13:26:53,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:26:53" (2/2) ... [2018-07-25 13:26:53,791 INFO L112 eAbstractionObserver]: Analyzing ICFG nested1.i_4.bpl [2018-07-25 13:26:53,802 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:26:53,812 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:26:53,869 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:26:53,870 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:26:53,870 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:26:53,870 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:26:53,871 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:26:53,871 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:26:53,871 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:26:53,871 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:26:53,871 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:26:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-07-25 13:26:53,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:26:53,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:53,904 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:26:53,906 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:53,913 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 13:26:53,920 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:54,013 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 13:26:54,016 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:26:54,017 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 13:26:54,021 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 13:26:54,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 13:26:54,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:26:54,038 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-07-25 13:26:54,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:54,078 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-07-25 13:26:54,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 13:26:54,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 13:26:54,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:54,091 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:26:54,092 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 13:26:54,096 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:26:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 13:26:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-07-25 13:26:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:26:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-07-25 13:26:54,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-07-25 13:26:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:54,136 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-07-25 13:26:54,137 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 13:26:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-07-25 13:26:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:26:54,137 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:54,138 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:26:54,138 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:54,139 INFO L82 PathProgramCache]: Analyzing trace with hash 209100445, now seen corresponding path program 1 times [2018-07-25 13:26:54,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:54,173 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 13:26:54,174 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:26:54,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:26:54,176 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 13:26:54,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 13:26:54,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:26:54,177 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2018-07-25 13:26:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:54,193 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-07-25 13:26:54,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 13:26:54,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-07-25 13:26:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:54,195 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:26:54,195 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 13:26:54,197 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 13:26:54,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 13:26:54,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 13:26:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 13:26:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-25 13:26:54,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-07-25 13:26:54,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:54,205 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-25 13:26:54,205 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 13:26:54,205 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-25 13:26:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:26:54,205 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:54,206 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:26:54,206 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:54,206 INFO L82 PathProgramCache]: Analyzing trace with hash -850198025, now seen corresponding path program 1 times [2018-07-25 13:26:54,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:54,270 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 13:26:54,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:54,272 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:26:54,273 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:26:54,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:26:54,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:26:54,274 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-07-25 13:26:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:54,303 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-07-25 13:26:54,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:26:54,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-07-25 13:26:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:54,304 INFO L225 Difference]: With dead ends: 21 [2018-07-25 13:26:54,305 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 13:26:54,305 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:26:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 13:26:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 13:26:54,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 13:26:54,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-25 13:26:54,311 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-07-25 13:26:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:54,311 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-25 13:26:54,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:26:54,312 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-25 13:26:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 13:26:54,313 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:54,313 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-07-25 13:26:54,313 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:54,314 INFO L82 PathProgramCache]: Analyzing trace with hash -928778543, now seen corresponding path program 2 times [2018-07-25 13:26:54,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-25 13:26:54,405 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:54,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:26:54,406 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:26:54,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:26:54,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:26:54,410 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 4 states. [2018-07-25 13:26:54,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:54,453 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-07-25 13:26:54,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:26:54,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-07-25 13:26:54,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:54,458 INFO L225 Difference]: With dead ends: 29 [2018-07-25 13:26:54,458 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 13:26:54,459 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:26:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 13:26:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2018-07-25 13:26:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 13:26:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-07-25 13:26:54,478 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2018-07-25 13:26:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:54,478 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-07-25 13:26:54,478 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:26:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-07-25 13:26:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 13:26:54,479 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:54,479 INFO L354 BasicCegarLoop]: trace histogram [6, 4, 3, 2, 2, 1, 1, 1] [2018-07-25 13:26:54,480 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:54,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1881088987, now seen corresponding path program 3 times [2018-07-25 13:26:54,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-25 13:26:54,522 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:54,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:26:54,523 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:26:54,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:26:54,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:26:54,524 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-07-25 13:26:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:54,553 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2018-07-25 13:26:54,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:26:54,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-07-25 13:26:54,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:54,555 INFO L225 Difference]: With dead ends: 37 [2018-07-25 13:26:54,555 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 13:26:54,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:26:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 13:26:54,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 13:26:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 13:26:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-07-25 13:26:54,579 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2018-07-25 13:26:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:54,579 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-07-25 13:26:54,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:26:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-07-25 13:26:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 13:26:54,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:54,581 INFO L354 BasicCegarLoop]: trace histogram [8, 6, 3, 2, 2, 1, 1, 1] [2018-07-25 13:26:54,581 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:54,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1778757007, now seen corresponding path program 4 times [2018-07-25 13:26:54,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-25 13:26:54,643 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:54,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:26:54,643 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:26:54,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:26:54,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:26:54,644 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2018-07-25 13:26:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:54,684 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-07-25 13:26:54,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:26:54,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-07-25 13:26:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:54,689 INFO L225 Difference]: With dead ends: 45 [2018-07-25 13:26:54,689 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 13:26:54,690 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:26:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 13:26:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2018-07-25 13:26:54,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 13:26:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-07-25 13:26:54,715 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2018-07-25 13:26:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:54,716 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-07-25 13:26:54,716 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:26:54,716 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-07-25 13:26:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 13:26:54,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:54,719 INFO L354 BasicCegarLoop]: trace histogram [12, 9, 4, 3, 3, 1, 1, 1] [2018-07-25 13:26:54,720 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:54,720 INFO L82 PathProgramCache]: Analyzing trace with hash 501354739, now seen corresponding path program 5 times [2018-07-25 13:26:54,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 70 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-25 13:26:54,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:54,805 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:26:54,805 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:26:54,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:26:54,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:26:54,806 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 6 states. [2018-07-25 13:26:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:54,873 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2018-07-25 13:26:54,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:26:54,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-07-25 13:26:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:54,877 INFO L225 Difference]: With dead ends: 65 [2018-07-25 13:26:54,878 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 13:26:54,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:26:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 13:26:54,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 13:26:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 13:26:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-07-25 13:26:54,900 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 34 [2018-07-25 13:26:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:54,901 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-07-25 13:26:54,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:26:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-07-25 13:26:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 13:26:54,903 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:54,903 INFO L354 BasicCegarLoop]: trace histogram [15, 12, 4, 3, 3, 1, 1, 1] [2018-07-25 13:26:54,903 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:54,905 INFO L82 PathProgramCache]: Analyzing trace with hash 209827969, now seen corresponding path program 6 times [2018-07-25 13:26:54,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-07-25 13:26:54,995 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:54,995 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:26:54,996 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:26:54,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:26:54,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:26:54,998 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 6 states. [2018-07-25 13:26:55,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:55,057 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2018-07-25 13:26:55,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:26:55,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-07-25 13:26:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:55,060 INFO L225 Difference]: With dead ends: 65 [2018-07-25 13:26:55,060 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 13:26:55,062 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:26:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 13:26:55,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2018-07-25 13:26:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 13:26:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2018-07-25 13:26:55,084 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 40 [2018-07-25 13:26:55,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:55,084 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2018-07-25 13:26:55,085 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:26:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2018-07-25 13:26:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 13:26:55,089 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:55,089 INFO L354 BasicCegarLoop]: trace histogram [20, 16, 5, 4, 4, 1, 1, 1] [2018-07-25 13:26:55,090 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:55,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1874565441, now seen corresponding path program 7 times [2018-07-25 13:26:55,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-07-25 13:26:55,179 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:55,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:26:55,180 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:26:55,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:26:55,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:26:55,181 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2018-07-25 13:26:55,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:55,265 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-07-25 13:26:55,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:26:55,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2018-07-25 13:26:55,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:55,267 INFO L225 Difference]: With dead ends: 77 [2018-07-25 13:26:55,267 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 13:26:55,270 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:26:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 13:26:55,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2018-07-25 13:26:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 13:26:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-07-25 13:26:55,295 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 52 [2018-07-25 13:26:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:55,296 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-07-25 13:26:55,296 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:26:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-07-25 13:26:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 13:26:55,299 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:55,299 INFO L354 BasicCegarLoop]: trace histogram [25, 20, 6, 5, 5, 1, 1, 1] [2018-07-25 13:26:55,301 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:55,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1395501053, now seen corresponding path program 8 times [2018-07-25 13:26:55,303 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 530 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-25 13:26:55,427 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:55,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:26:55,428 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:26:55,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:26:55,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:26:55,431 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 8 states. [2018-07-25 13:26:55,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:55,508 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2018-07-25 13:26:55,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:26:55,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2018-07-25 13:26:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:55,511 INFO L225 Difference]: With dead ends: 89 [2018-07-25 13:26:55,514 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 13:26:55,515 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:26:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 13:26:55,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2018-07-25 13:26:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 13:26:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-07-25 13:26:55,545 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 64 [2018-07-25 13:26:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:55,546 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-07-25 13:26:55,546 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:26:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-07-25 13:26:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 13:26:55,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:55,548 INFO L354 BasicCegarLoop]: trace histogram [30, 24, 7, 6, 6, 1, 1, 1] [2018-07-25 13:26:55,548 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:55,549 INFO L82 PathProgramCache]: Analyzing trace with hash 150535227, now seen corresponding path program 9 times [2018-07-25 13:26:55,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 792 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-25 13:26:55,660 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:55,660 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:26:55,661 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:26:55,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:26:55,661 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:26:55,662 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 9 states. [2018-07-25 13:26:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:55,724 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2018-07-25 13:26:55,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 13:26:55,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2018-07-25 13:26:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:55,725 INFO L225 Difference]: With dead ends: 101 [2018-07-25 13:26:55,726 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 13:26:55,726 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:26:55,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 13:26:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2018-07-25 13:26:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 13:26:55,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2018-07-25 13:26:55,759 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 76 [2018-07-25 13:26:55,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:55,760 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2018-07-25 13:26:55,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:26:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2018-07-25 13:26:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 13:26:55,761 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:55,763 INFO L354 BasicCegarLoop]: trace histogram [35, 28, 8, 7, 7, 1, 1, 1] [2018-07-25 13:26:55,763 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:55,763 INFO L82 PathProgramCache]: Analyzing trace with hash 673309561, now seen corresponding path program 10 times [2018-07-25 13:26:55,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-07-25 13:26:55,880 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:55,880 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:26:55,881 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:26:55,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:26:55,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:26:55,882 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 10 states. [2018-07-25 13:26:55,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:55,957 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2018-07-25 13:26:55,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:26:55,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2018-07-25 13:26:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:55,959 INFO L225 Difference]: With dead ends: 113 [2018-07-25 13:26:55,959 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 13:26:55,960 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:26:55,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 13:26:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2018-07-25 13:26:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 13:26:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2018-07-25 13:26:55,991 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 88 [2018-07-25 13:26:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:55,991 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2018-07-25 13:26:55,991 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:26:55,991 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2018-07-25 13:26:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 13:26:55,993 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:55,993 INFO L354 BasicCegarLoop]: trace histogram [40, 32, 9, 8, 8, 1, 1, 1] [2018-07-25 13:26:55,993 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:55,994 INFO L82 PathProgramCache]: Analyzing trace with hash -907813449, now seen corresponding path program 11 times [2018-07-25 13:26:55,994 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-07-25 13:26:56,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:56,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:26:56,131 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:26:56,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:26:56,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:26:56,132 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 11 states. [2018-07-25 13:26:56,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:56,223 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2018-07-25 13:26:56,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:26:56,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2018-07-25 13:26:56,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:56,225 INFO L225 Difference]: With dead ends: 125 [2018-07-25 13:26:56,225 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 13:26:56,226 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:26:56,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 13:26:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 113. [2018-07-25 13:26:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 13:26:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2018-07-25 13:26:56,254 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 100 [2018-07-25 13:26:56,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:56,255 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2018-07-25 13:26:56,255 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:26:56,255 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2018-07-25 13:26:56,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 13:26:56,257 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:56,257 INFO L354 BasicCegarLoop]: trace histogram [45, 36, 10, 9, 9, 1, 1, 1] [2018-07-25 13:26:56,257 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:56,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1975883019, now seen corresponding path program 12 times [2018-07-25 13:26:56,258 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 1890 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-07-25 13:26:56,416 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:56,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:26:56,417 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:26:56,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:26:56,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:26:56,418 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 12 states. [2018-07-25 13:26:56,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:56,531 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2018-07-25 13:26:56,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 13:26:56,532 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2018-07-25 13:26:56,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:56,533 INFO L225 Difference]: With dead ends: 137 [2018-07-25 13:26:56,533 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 13:26:56,534 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:26:56,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 13:26:56,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-07-25 13:26:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 13:26:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2018-07-25 13:26:56,578 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 112 [2018-07-25 13:26:56,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:56,579 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2018-07-25 13:26:56,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:26:56,579 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2018-07-25 13:26:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 13:26:56,583 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:56,583 INFO L354 BasicCegarLoop]: trace histogram [50, 40, 11, 10, 10, 1, 1, 1] [2018-07-25 13:26:56,583 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:56,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1742801715, now seen corresponding path program 13 times [2018-07-25 13:26:56,584 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2560 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-07-25 13:26:56,748 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:56,748 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 13:26:56,749 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:26:56,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:26:56,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:26:56,750 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand 13 states. [2018-07-25 13:26:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:56,866 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2018-07-25 13:26:56,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:26:56,867 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2018-07-25 13:26:56,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:56,868 INFO L225 Difference]: With dead ends: 149 [2018-07-25 13:26:56,868 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 13:26:56,869 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:26:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 13:26:56,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2018-07-25 13:26:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 13:26:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2018-07-25 13:26:56,909 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 124 [2018-07-25 13:26:56,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:56,909 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2018-07-25 13:26:56,910 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:26:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2018-07-25 13:26:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 13:26:56,911 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:56,911 INFO L354 BasicCegarLoop]: trace histogram [55, 44, 12, 11, 11, 1, 1, 1] [2018-07-25 13:26:56,911 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:56,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1538048399, now seen corresponding path program 14 times [2018-07-25 13:26:56,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3102 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-07-25 13:26:57,100 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:57,100 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 13:26:57,101 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 13:26:57,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 13:26:57,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:26:57,105 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand 14 states. [2018-07-25 13:26:57,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:57,269 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2018-07-25 13:26:57,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:26:57,269 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 136 [2018-07-25 13:26:57,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:57,271 INFO L225 Difference]: With dead ends: 161 [2018-07-25 13:26:57,271 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 13:26:57,272 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-25 13:26:57,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 13:26:57,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2018-07-25 13:26:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 13:26:57,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 161 transitions. [2018-07-25 13:26:57,316 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 161 transitions. Word has length 136 [2018-07-25 13:26:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:57,317 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 161 transitions. [2018-07-25 13:26:57,317 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 13:26:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 161 transitions. [2018-07-25 13:26:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 13:26:57,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:57,319 INFO L354 BasicCegarLoop]: trace histogram [60, 48, 13, 12, 12, 1, 1, 1] [2018-07-25 13:26:57,319 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:57,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1546877777, now seen corresponding path program 15 times [2018-07-25 13:26:57,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3696 backedges. 0 proven. 3456 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-07-25 13:26:57,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:57,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 13:26:57,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 13:26:57,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 13:26:57,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:26:57,554 INFO L87 Difference]: Start difference. First operand 149 states and 161 transitions. Second operand 15 states. [2018-07-25 13:26:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:57,703 INFO L93 Difference]: Finished difference Result 173 states and 187 transitions. [2018-07-25 13:26:57,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:26:57,704 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2018-07-25 13:26:57,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:57,705 INFO L225 Difference]: With dead ends: 173 [2018-07-25 13:26:57,705 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 13:26:57,706 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-07-25 13:26:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 13:26:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2018-07-25 13:26:57,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 13:26:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 174 transitions. [2018-07-25 13:26:57,755 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 174 transitions. Word has length 148 [2018-07-25 13:26:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:57,755 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 174 transitions. [2018-07-25 13:26:57,755 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 13:26:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 174 transitions. [2018-07-25 13:26:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 13:26:57,758 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:57,758 INFO L354 BasicCegarLoop]: trace histogram [65, 52, 14, 13, 13, 1, 1, 1] [2018-07-25 13:26:57,759 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:57,759 INFO L82 PathProgramCache]: Analyzing trace with hash -850895379, now seen corresponding path program 16 times [2018-07-25 13:26:57,759 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4342 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-07-25 13:26:57,948 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:57,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 13:26:57,948 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 13:26:57,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 13:26:57,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:26:57,949 INFO L87 Difference]: Start difference. First operand 161 states and 174 transitions. Second operand 16 states. [2018-07-25 13:26:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:58,126 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2018-07-25 13:26:58,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:26:58,126 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2018-07-25 13:26:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:58,131 INFO L225 Difference]: With dead ends: 185 [2018-07-25 13:26:58,131 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 13:26:58,132 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:26:58,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 13:26:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 173. [2018-07-25 13:26:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 13:26:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2018-07-25 13:26:58,185 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 160 [2018-07-25 13:26:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:58,186 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2018-07-25 13:26:58,186 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 13:26:58,186 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2018-07-25 13:26:58,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 13:26:58,188 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:58,188 INFO L354 BasicCegarLoop]: trace histogram [70, 56, 15, 14, 14, 1, 1, 1] [2018-07-25 13:26:58,188 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:58,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1786923563, now seen corresponding path program 17 times [2018-07-25 13:26:58,188 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 4760 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-07-25 13:26:58,387 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:58,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 13:26:58,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 13:26:58,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 13:26:58,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:26:58,388 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand 17 states. [2018-07-25 13:26:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:58,550 INFO L93 Difference]: Finished difference Result 197 states and 213 transitions. [2018-07-25 13:26:58,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:26:58,550 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 172 [2018-07-25 13:26:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:58,552 INFO L225 Difference]: With dead ends: 197 [2018-07-25 13:26:58,552 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 13:26:58,553 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-07-25 13:26:58,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 13:26:58,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 185. [2018-07-25 13:26:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 13:26:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 200 transitions. [2018-07-25 13:26:58,614 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 200 transitions. Word has length 172 [2018-07-25 13:26:58,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:58,615 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 200 transitions. [2018-07-25 13:26:58,615 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 13:26:58,615 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 200 transitions. [2018-07-25 13:26:58,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 13:26:58,617 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:58,618 INFO L354 BasicCegarLoop]: trace histogram [75, 60, 16, 15, 15, 1, 1, 1] [2018-07-25 13:26:58,618 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:58,618 INFO L82 PathProgramCache]: Analyzing trace with hash -2013935255, now seen corresponding path program 18 times [2018-07-25 13:26:58,618 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 0 proven. 5490 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-07-25 13:26:58,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:58,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 13:26:58,845 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 13:26:58,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 13:26:58,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:26:58,846 INFO L87 Difference]: Start difference. First operand 185 states and 200 transitions. Second operand 18 states. [2018-07-25 13:26:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:59,051 INFO L93 Difference]: Finished difference Result 209 states and 226 transitions. [2018-07-25 13:26:59,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:26:59,051 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 184 [2018-07-25 13:26:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:59,053 INFO L225 Difference]: With dead ends: 209 [2018-07-25 13:26:59,053 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 13:26:59,054 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-25 13:26:59,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 13:26:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 197. [2018-07-25 13:26:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 13:26:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 213 transitions. [2018-07-25 13:26:59,128 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 213 transitions. Word has length 184 [2018-07-25 13:26:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:59,129 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 213 transitions. [2018-07-25 13:26:59,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 13:26:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 213 transitions. [2018-07-25 13:26:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 13:26:59,131 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:59,131 INFO L354 BasicCegarLoop]: trace histogram [80, 64, 17, 16, 16, 1, 1, 1] [2018-07-25 13:26:59,132 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash -723625049, now seen corresponding path program 19 times [2018-07-25 13:26:59,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:26:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6592 backedges. 0 proven. 6272 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-07-25 13:26:59,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:26:59,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 13:26:59,376 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 13:26:59,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 13:26:59,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:26:59,377 INFO L87 Difference]: Start difference. First operand 197 states and 213 transitions. Second operand 19 states. [2018-07-25 13:26:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:26:59,631 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2018-07-25 13:26:59,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:26:59,632 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 196 [2018-07-25 13:26:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:26:59,635 INFO L225 Difference]: With dead ends: 221 [2018-07-25 13:26:59,635 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 13:26:59,636 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-07-25 13:26:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 13:26:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 209. [2018-07-25 13:26:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 13:26:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 226 transitions. [2018-07-25 13:26:59,733 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 226 transitions. Word has length 196 [2018-07-25 13:26:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:26:59,733 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 226 transitions. [2018-07-25 13:26:59,734 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 13:26:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 226 transitions. [2018-07-25 13:26:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 13:26:59,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:26:59,737 INFO L354 BasicCegarLoop]: trace histogram [85, 68, 18, 17, 17, 1, 1, 1] [2018-07-25 13:26:59,737 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:26:59,738 INFO L82 PathProgramCache]: Analyzing trace with hash -2093514523, now seen corresponding path program 20 times [2018-07-25 13:26:59,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:26:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7446 backedges. 0 proven. 7106 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-07-25 13:27:00,096 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:00,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 13:27:00,096 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 13:27:00,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 13:27:00,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:27:00,097 INFO L87 Difference]: Start difference. First operand 209 states and 226 transitions. Second operand 20 states. [2018-07-25 13:27:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:00,342 INFO L93 Difference]: Finished difference Result 233 states and 252 transitions. [2018-07-25 13:27:00,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:27:00,343 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 208 [2018-07-25 13:27:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:00,344 INFO L225 Difference]: With dead ends: 233 [2018-07-25 13:27:00,344 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 13:27:00,345 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-25 13:27:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 13:27:00,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 221. [2018-07-25 13:27:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 13:27:00,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 239 transitions. [2018-07-25 13:27:00,426 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 239 transitions. Word has length 208 [2018-07-25 13:27:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:00,426 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 239 transitions. [2018-07-25 13:27:00,426 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 13:27:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 239 transitions. [2018-07-25 13:27:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 13:27:00,429 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:00,429 INFO L354 BasicCegarLoop]: trace histogram [90, 72, 19, 18, 18, 1, 1, 1] [2018-07-25 13:27:00,429 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:00,430 INFO L82 PathProgramCache]: Analyzing trace with hash 666679587, now seen corresponding path program 21 times [2018-07-25 13:27:00,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8352 backedges. 0 proven. 7992 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2018-07-25 13:27:00,689 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:00,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 13:27:00,689 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 13:27:00,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 13:27:00,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:27:00,690 INFO L87 Difference]: Start difference. First operand 221 states and 239 transitions. Second operand 21 states. [2018-07-25 13:27:00,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:00,938 INFO L93 Difference]: Finished difference Result 245 states and 265 transitions. [2018-07-25 13:27:00,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:27:00,939 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 220 [2018-07-25 13:27:00,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:00,940 INFO L225 Difference]: With dead ends: 245 [2018-07-25 13:27:00,941 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 13:27:00,941 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-07-25 13:27:00,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 13:27:01,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 233. [2018-07-25 13:27:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 13:27:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 252 transitions. [2018-07-25 13:27:01,025 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 252 transitions. Word has length 220 [2018-07-25 13:27:01,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:01,026 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 252 transitions. [2018-07-25 13:27:01,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 13:27:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 252 transitions. [2018-07-25 13:27:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 13:27:01,028 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:01,029 INFO L354 BasicCegarLoop]: trace histogram [95, 76, 20, 19, 19, 1, 1, 1] [2018-07-25 13:27:01,029 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:01,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1712749471, now seen corresponding path program 22 times [2018-07-25 13:27:01,029 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9310 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-07-25 13:27:01,317 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:01,317 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 13:27:01,317 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 13:27:01,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 13:27:01,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:27:01,318 INFO L87 Difference]: Start difference. First operand 233 states and 252 transitions. Second operand 22 states. [2018-07-25 13:27:01,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:01,591 INFO L93 Difference]: Finished difference Result 257 states and 278 transitions. [2018-07-25 13:27:01,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:27:01,591 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 232 [2018-07-25 13:27:01,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:01,593 INFO L225 Difference]: With dead ends: 257 [2018-07-25 13:27:01,593 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 13:27:01,594 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-25 13:27:01,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 13:27:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2018-07-25 13:27:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 13:27:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 265 transitions. [2018-07-25 13:27:01,690 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 265 transitions. Word has length 232 [2018-07-25 13:27:01,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:01,690 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 265 transitions. [2018-07-25 13:27:01,690 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 13:27:01,690 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 265 transitions. [2018-07-25 13:27:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 13:27:01,693 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:01,693 INFO L354 BasicCegarLoop]: trace histogram [100, 80, 21, 20, 20, 1, 1, 1] [2018-07-25 13:27:01,694 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:01,694 INFO L82 PathProgramCache]: Analyzing trace with hash -738631009, now seen corresponding path program 23 times [2018-07-25 13:27:01,694 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 9920 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-07-25 13:27:02,025 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:02,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 13:27:02,029 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 13:27:02,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 13:27:02,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:27:02,030 INFO L87 Difference]: Start difference. First operand 245 states and 265 transitions. Second operand 23 states. [2018-07-25 13:27:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:02,372 INFO L93 Difference]: Finished difference Result 269 states and 291 transitions. [2018-07-25 13:27:02,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:27:02,373 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 244 [2018-07-25 13:27:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:02,375 INFO L225 Difference]: With dead ends: 269 [2018-07-25 13:27:02,375 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 13:27:02,376 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:27:02,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 13:27:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 257. [2018-07-25 13:27:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 13:27:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 278 transitions. [2018-07-25 13:27:02,522 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 278 transitions. Word has length 244 [2018-07-25 13:27:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:02,523 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 278 transitions. [2018-07-25 13:27:02,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 13:27:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 278 transitions. [2018-07-25 13:27:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 13:27:02,526 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:02,526 INFO L354 BasicCegarLoop]: trace histogram [105, 84, 22, 21, 21, 1, 1, 1] [2018-07-25 13:27:02,526 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:02,527 INFO L82 PathProgramCache]: Analyzing trace with hash -756558883, now seen corresponding path program 24 times [2018-07-25 13:27:02,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11382 backedges. 0 proven. 10962 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-07-25 13:27:02,834 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:02,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 13:27:02,835 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 13:27:02,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 13:27:02,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:27:02,836 INFO L87 Difference]: Start difference. First operand 257 states and 278 transitions. Second operand 24 states. [2018-07-25 13:27:03,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:03,128 INFO L93 Difference]: Finished difference Result 281 states and 304 transitions. [2018-07-25 13:27:03,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:27:03,129 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 256 [2018-07-25 13:27:03,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:03,131 INFO L225 Difference]: With dead ends: 281 [2018-07-25 13:27:03,131 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 13:27:03,132 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-25 13:27:03,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 13:27:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 269. [2018-07-25 13:27:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 13:27:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2018-07-25 13:27:03,234 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 256 [2018-07-25 13:27:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:03,234 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2018-07-25 13:27:03,234 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 13:27:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2018-07-25 13:27:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 13:27:03,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:03,238 INFO L354 BasicCegarLoop]: trace histogram [110, 88, 23, 22, 22, 1, 1, 1] [2018-07-25 13:27:03,238 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:03,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1987074075, now seen corresponding path program 25 times [2018-07-25 13:27:03,239 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 0 proven. 12056 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-07-25 13:27:03,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:03,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 13:27:03,554 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 13:27:03,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 13:27:03,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:27:03,555 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand 25 states. [2018-07-25 13:27:03,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:03,893 INFO L93 Difference]: Finished difference Result 293 states and 317 transitions. [2018-07-25 13:27:03,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 13:27:03,894 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 268 [2018-07-25 13:27:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:03,896 INFO L225 Difference]: With dead ends: 293 [2018-07-25 13:27:03,896 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 13:27:03,897 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-25 13:27:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 13:27:04,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 281. [2018-07-25 13:27:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 13:27:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 304 transitions. [2018-07-25 13:27:04,010 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 304 transitions. Word has length 268 [2018-07-25 13:27:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:04,011 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 304 transitions. [2018-07-25 13:27:04,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 13:27:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 304 transitions. [2018-07-25 13:27:04,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 13:27:04,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:04,015 INFO L354 BasicCegarLoop]: trace histogram [115, 92, 24, 23, 23, 1, 1, 1] [2018-07-25 13:27:04,015 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:04,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1628335961, now seen corresponding path program 26 times [2018-07-25 13:27:04,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 13662 backedges. 0 proven. 13202 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2018-07-25 13:27:04,385 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:04,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 13:27:04,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 13:27:04,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 13:27:04,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:27:04,387 INFO L87 Difference]: Start difference. First operand 281 states and 304 transitions. Second operand 26 states. [2018-07-25 13:27:04,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:04,747 INFO L93 Difference]: Finished difference Result 305 states and 330 transitions. [2018-07-25 13:27:04,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:27:04,748 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 280 [2018-07-25 13:27:04,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:04,750 INFO L225 Difference]: With dead ends: 305 [2018-07-25 13:27:04,750 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 13:27:04,751 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:27:04,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 13:27:04,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 293. [2018-07-25 13:27:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 13:27:04,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 317 transitions. [2018-07-25 13:27:04,893 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 317 transitions. Word has length 280 [2018-07-25 13:27:04,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:04,894 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 317 transitions. [2018-07-25 13:27:04,894 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 13:27:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 317 transitions. [2018-07-25 13:27:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 13:27:04,899 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:04,899 INFO L354 BasicCegarLoop]: trace histogram [120, 96, 25, 24, 24, 1, 1, 1] [2018-07-25 13:27:04,899 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:04,900 INFO L82 PathProgramCache]: Analyzing trace with hash -671245929, now seen corresponding path program 27 times [2018-07-25 13:27:04,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14880 backedges. 0 proven. 14400 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2018-07-25 13:27:05,335 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:05,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 13:27:05,336 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 13:27:05,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 13:27:05,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:27:05,337 INFO L87 Difference]: Start difference. First operand 293 states and 317 transitions. Second operand 27 states. [2018-07-25 13:27:05,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:05,703 INFO L93 Difference]: Finished difference Result 317 states and 343 transitions. [2018-07-25 13:27:05,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 13:27:05,704 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 292 [2018-07-25 13:27:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:05,706 INFO L225 Difference]: With dead ends: 317 [2018-07-25 13:27:05,706 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 13:27:05,707 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-07-25 13:27:05,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 13:27:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 305. [2018-07-25 13:27:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 13:27:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 330 transitions. [2018-07-25 13:27:05,841 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 330 transitions. Word has length 292 [2018-07-25 13:27:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:05,842 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 330 transitions. [2018-07-25 13:27:05,842 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 13:27:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 330 transitions. [2018-07-25 13:27:05,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 13:27:05,846 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:05,846 INFO L354 BasicCegarLoop]: trace histogram [125, 100, 26, 25, 25, 1, 1, 1] [2018-07-25 13:27:05,846 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:05,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1556523307, now seen corresponding path program 28 times [2018-07-25 13:27:05,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 16150 backedges. 0 proven. 15650 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2018-07-25 13:27:06,190 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:06,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 13:27:06,191 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 13:27:06,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 13:27:06,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:27:06,191 INFO L87 Difference]: Start difference. First operand 305 states and 330 transitions. Second operand 28 states. [2018-07-25 13:27:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:06,586 INFO L93 Difference]: Finished difference Result 329 states and 356 transitions. [2018-07-25 13:27:06,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:27:06,586 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 304 [2018-07-25 13:27:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:06,589 INFO L225 Difference]: With dead ends: 329 [2018-07-25 13:27:06,589 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 13:27:06,590 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-25 13:27:06,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 13:27:06,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2018-07-25 13:27:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 13:27:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 343 transitions. [2018-07-25 13:27:06,732 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 343 transitions. Word has length 304 [2018-07-25 13:27:06,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:06,733 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 343 transitions. [2018-07-25 13:27:06,733 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 13:27:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 343 transitions. [2018-07-25 13:27:06,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 13:27:06,737 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:06,738 INFO L354 BasicCegarLoop]: trace histogram [130, 104, 27, 26, 26, 1, 1, 1] [2018-07-25 13:27:06,738 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:06,738 INFO L82 PathProgramCache]: Analyzing trace with hash -310565101, now seen corresponding path program 29 times [2018-07-25 13:27:06,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 17472 backedges. 0 proven. 16952 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2018-07-25 13:27:07,135 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:07,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 13:27:07,135 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 13:27:07,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 13:27:07,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:27:07,136 INFO L87 Difference]: Start difference. First operand 317 states and 343 transitions. Second operand 29 states. [2018-07-25 13:27:07,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:07,549 INFO L93 Difference]: Finished difference Result 341 states and 369 transitions. [2018-07-25 13:27:07,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:27:07,550 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 316 [2018-07-25 13:27:07,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:07,552 INFO L225 Difference]: With dead ends: 341 [2018-07-25 13:27:07,553 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 13:27:07,553 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:27:07,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 13:27:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 329. [2018-07-25 13:27:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 13:27:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 356 transitions. [2018-07-25 13:27:07,735 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 356 transitions. Word has length 316 [2018-07-25 13:27:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:07,739 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 356 transitions. [2018-07-25 13:27:07,739 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 13:27:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 356 transitions. [2018-07-25 13:27:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 13:27:07,745 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:07,745 INFO L354 BasicCegarLoop]: trace histogram [135, 108, 28, 27, 27, 1, 1, 1] [2018-07-25 13:27:07,745 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:07,746 INFO L82 PathProgramCache]: Analyzing trace with hash 608471633, now seen corresponding path program 30 times [2018-07-25 13:27:07,746 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18846 backedges. 0 proven. 18306 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2018-07-25 13:27:08,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:08,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 13:27:08,145 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 13:27:08,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 13:27:08,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:27:08,146 INFO L87 Difference]: Start difference. First operand 329 states and 356 transitions. Second operand 30 states. [2018-07-25 13:27:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:08,565 INFO L93 Difference]: Finished difference Result 353 states and 382 transitions. [2018-07-25 13:27:08,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:27:08,566 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 328 [2018-07-25 13:27:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:08,568 INFO L225 Difference]: With dead ends: 353 [2018-07-25 13:27:08,568 INFO L226 Difference]: Without dead ends: 351 [2018-07-25 13:27:08,569 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-25 13:27:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-07-25 13:27:08,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 341. [2018-07-25 13:27:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 13:27:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 369 transitions. [2018-07-25 13:27:08,724 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 369 transitions. Word has length 328 [2018-07-25 13:27:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:08,725 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 369 transitions. [2018-07-25 13:27:08,725 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 13:27:08,726 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 369 transitions. [2018-07-25 13:27:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 13:27:08,731 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:08,731 INFO L354 BasicCegarLoop]: trace histogram [140, 112, 29, 28, 28, 1, 1, 1] [2018-07-25 13:27:08,732 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:08,732 INFO L82 PathProgramCache]: Analyzing trace with hash -674561905, now seen corresponding path program 31 times [2018-07-25 13:27:08,732 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 20272 backedges. 0 proven. 19712 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2018-07-25 13:27:09,167 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:09,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 13:27:09,168 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 13:27:09,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 13:27:09,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:27:09,172 INFO L87 Difference]: Start difference. First operand 341 states and 369 transitions. Second operand 31 states. [2018-07-25 13:27:09,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:09,640 INFO L93 Difference]: Finished difference Result 365 states and 395 transitions. [2018-07-25 13:27:09,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 13:27:09,641 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 340 [2018-07-25 13:27:09,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:09,643 INFO L225 Difference]: With dead ends: 365 [2018-07-25 13:27:09,643 INFO L226 Difference]: Without dead ends: 363 [2018-07-25 13:27:09,644 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-25 13:27:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-07-25 13:27:09,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 353. [2018-07-25 13:27:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-07-25 13:27:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 382 transitions. [2018-07-25 13:27:09,810 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 382 transitions. Word has length 340 [2018-07-25 13:27:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:09,811 INFO L472 AbstractCegarLoop]: Abstraction has 353 states and 382 transitions. [2018-07-25 13:27:09,811 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 13:27:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 382 transitions. [2018-07-25 13:27:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-25 13:27:09,816 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:09,816 INFO L354 BasicCegarLoop]: trace histogram [145, 116, 30, 29, 29, 1, 1, 1] [2018-07-25 13:27:09,816 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:09,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1693709875, now seen corresponding path program 32 times [2018-07-25 13:27:09,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 21750 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2018-07-25 13:27:10,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:10,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 13:27:10,309 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 13:27:10,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 13:27:10,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:27:10,310 INFO L87 Difference]: Start difference. First operand 353 states and 382 transitions. Second operand 32 states. [2018-07-25 13:27:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:10,793 INFO L93 Difference]: Finished difference Result 377 states and 408 transitions. [2018-07-25 13:27:10,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 13:27:10,793 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 352 [2018-07-25 13:27:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:10,796 INFO L225 Difference]: With dead ends: 377 [2018-07-25 13:27:10,796 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 13:27:10,798 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-25 13:27:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 13:27:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 365. [2018-07-25 13:27:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-07-25 13:27:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 395 transitions. [2018-07-25 13:27:10,977 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 395 transitions. Word has length 352 [2018-07-25 13:27:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:10,978 INFO L472 AbstractCegarLoop]: Abstraction has 365 states and 395 transitions. [2018-07-25 13:27:10,978 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 13:27:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 395 transitions. [2018-07-25 13:27:10,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-07-25 13:27:10,986 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:10,987 INFO L354 BasicCegarLoop]: trace histogram [150, 120, 31, 30, 30, 1, 1, 1] [2018-07-25 13:27:10,987 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:10,987 INFO L82 PathProgramCache]: Analyzing trace with hash -473750005, now seen corresponding path program 33 times [2018-07-25 13:27:10,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 23280 backedges. 0 proven. 22680 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-07-25 13:27:11,409 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:11,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 13:27:11,410 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 13:27:11,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 13:27:11,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:27:11,411 INFO L87 Difference]: Start difference. First operand 365 states and 395 transitions. Second operand 33 states. [2018-07-25 13:27:11,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:11,872 INFO L93 Difference]: Finished difference Result 389 states and 421 transitions. [2018-07-25 13:27:11,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:27:11,872 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 364 [2018-07-25 13:27:11,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:11,875 INFO L225 Difference]: With dead ends: 389 [2018-07-25 13:27:11,876 INFO L226 Difference]: Without dead ends: 387 [2018-07-25 13:27:11,876 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 13:27:11,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-07-25 13:27:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 377. [2018-07-25 13:27:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-07-25 13:27:12,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 408 transitions. [2018-07-25 13:27:12,057 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 408 transitions. Word has length 364 [2018-07-25 13:27:12,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:12,058 INFO L472 AbstractCegarLoop]: Abstraction has 377 states and 408 transitions. [2018-07-25 13:27:12,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 13:27:12,058 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 408 transitions. [2018-07-25 13:27:12,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-25 13:27:12,063 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:12,064 INFO L354 BasicCegarLoop]: trace histogram [155, 124, 32, 31, 31, 1, 1, 1] [2018-07-25 13:27:12,064 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:12,064 INFO L82 PathProgramCache]: Analyzing trace with hash -362031799, now seen corresponding path program 34 times [2018-07-25 13:27:12,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 24862 backedges. 0 proven. 24242 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-07-25 13:27:12,487 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:12,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 13:27:12,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 13:27:12,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 13:27:12,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:27:12,489 INFO L87 Difference]: Start difference. First operand 377 states and 408 transitions. Second operand 34 states. [2018-07-25 13:27:12,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:12,959 INFO L93 Difference]: Finished difference Result 401 states and 434 transitions. [2018-07-25 13:27:12,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 13:27:12,960 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 376 [2018-07-25 13:27:12,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:12,962 INFO L225 Difference]: With dead ends: 401 [2018-07-25 13:27:12,962 INFO L226 Difference]: Without dead ends: 399 [2018-07-25 13:27:12,963 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 13:27:12,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-07-25 13:27:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 389. [2018-07-25 13:27:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-07-25 13:27:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 421 transitions. [2018-07-25 13:27:13,154 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 421 transitions. Word has length 376 [2018-07-25 13:27:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:13,155 INFO L472 AbstractCegarLoop]: Abstraction has 389 states and 421 transitions. [2018-07-25 13:27:13,155 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 13:27:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 421 transitions. [2018-07-25 13:27:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-25 13:27:13,161 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:13,162 INFO L354 BasicCegarLoop]: trace histogram [160, 128, 33, 32, 32, 1, 1, 1] [2018-07-25 13:27:13,162 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:13,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1975412857, now seen corresponding path program 35 times [2018-07-25 13:27:13,162 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 26496 backedges. 0 proven. 25856 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2018-07-25 13:27:13,643 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:13,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 13:27:13,644 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 13:27:13,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 13:27:13,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:27:13,645 INFO L87 Difference]: Start difference. First operand 389 states and 421 transitions. Second operand 35 states. [2018-07-25 13:27:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:14,133 INFO L93 Difference]: Finished difference Result 413 states and 447 transitions. [2018-07-25 13:27:14,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 13:27:14,133 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 388 [2018-07-25 13:27:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:14,136 INFO L225 Difference]: With dead ends: 413 [2018-07-25 13:27:14,136 INFO L226 Difference]: Without dead ends: 411 [2018-07-25 13:27:14,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 13:27:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-07-25 13:27:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 401. [2018-07-25 13:27:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-07-25 13:27:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 434 transitions. [2018-07-25 13:27:14,339 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 434 transitions. Word has length 388 [2018-07-25 13:27:14,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:14,340 INFO L472 AbstractCegarLoop]: Abstraction has 401 states and 434 transitions. [2018-07-25 13:27:14,340 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 13:27:14,340 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 434 transitions. [2018-07-25 13:27:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-07-25 13:27:14,345 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:14,345 INFO L354 BasicCegarLoop]: trace histogram [165, 132, 34, 33, 33, 1, 1, 1] [2018-07-25 13:27:14,345 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash 557837509, now seen corresponding path program 36 times [2018-07-25 13:27:14,346 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 28182 backedges. 0 proven. 27522 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-07-25 13:27:14,877 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:14,878 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 13:27:14,878 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 13:27:14,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 13:27:14,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:27:14,880 INFO L87 Difference]: Start difference. First operand 401 states and 434 transitions. Second operand 36 states. [2018-07-25 13:27:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:15,426 INFO L93 Difference]: Finished difference Result 425 states and 460 transitions. [2018-07-25 13:27:15,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 13:27:15,426 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 400 [2018-07-25 13:27:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:15,430 INFO L225 Difference]: With dead ends: 425 [2018-07-25 13:27:15,430 INFO L226 Difference]: Without dead ends: 423 [2018-07-25 13:27:15,431 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 13:27:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-07-25 13:27:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 413. [2018-07-25 13:27:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-07-25 13:27:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 447 transitions. [2018-07-25 13:27:15,655 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 447 transitions. Word has length 400 [2018-07-25 13:27:15,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:15,656 INFO L472 AbstractCegarLoop]: Abstraction has 413 states and 447 transitions. [2018-07-25 13:27:15,656 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 13:27:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 447 transitions. [2018-07-25 13:27:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-25 13:27:15,658 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:15,659 INFO L354 BasicCegarLoop]: trace histogram [170, 136, 35, 34, 34, 1, 1, 1] [2018-07-25 13:27:15,659 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:15,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1881298179, now seen corresponding path program 37 times [2018-07-25 13:27:15,660 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 29920 backedges. 0 proven. 29240 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2018-07-25 13:27:16,299 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:16,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 13:27:16,300 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 13:27:16,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 13:27:16,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:27:16,301 INFO L87 Difference]: Start difference. First operand 413 states and 447 transitions. Second operand 37 states. [2018-07-25 13:27:16,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:16,824 INFO L93 Difference]: Finished difference Result 437 states and 473 transitions. [2018-07-25 13:27:16,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 13:27:16,824 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 412 [2018-07-25 13:27:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:16,829 INFO L225 Difference]: With dead ends: 437 [2018-07-25 13:27:16,829 INFO L226 Difference]: Without dead ends: 435 [2018-07-25 13:27:16,830 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 13:27:16,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-07-25 13:27:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 425. [2018-07-25 13:27:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-07-25 13:27:17,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 460 transitions. [2018-07-25 13:27:17,074 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 460 transitions. Word has length 412 [2018-07-25 13:27:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:17,075 INFO L472 AbstractCegarLoop]: Abstraction has 425 states and 460 transitions. [2018-07-25 13:27:17,075 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 13:27:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 460 transitions. [2018-07-25 13:27:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-07-25 13:27:17,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:17,078 INFO L354 BasicCegarLoop]: trace histogram [175, 140, 36, 35, 35, 1, 1, 1] [2018-07-25 13:27:17,078 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:17,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2053394497, now seen corresponding path program 38 times [2018-07-25 13:27:17,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 31710 backedges. 0 proven. 31010 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2018-07-25 13:27:17,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:17,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 13:27:17,513 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 13:27:17,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 13:27:17,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:27:17,515 INFO L87 Difference]: Start difference. First operand 425 states and 460 transitions. Second operand 38 states. [2018-07-25 13:27:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:18,082 INFO L93 Difference]: Finished difference Result 449 states and 486 transitions. [2018-07-25 13:27:18,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 13:27:18,082 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 424 [2018-07-25 13:27:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:18,085 INFO L225 Difference]: With dead ends: 449 [2018-07-25 13:27:18,085 INFO L226 Difference]: Without dead ends: 447 [2018-07-25 13:27:18,086 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 13:27:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-07-25 13:27:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 437. [2018-07-25 13:27:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 13:27:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 473 transitions. [2018-07-25 13:27:18,290 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 473 transitions. Word has length 424 [2018-07-25 13:27:18,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:18,291 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 473 transitions. [2018-07-25 13:27:18,291 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 13:27:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 473 transitions. [2018-07-25 13:27:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-07-25 13:27:18,294 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:18,294 INFO L354 BasicCegarLoop]: trace histogram [180, 144, 37, 36, 36, 1, 1, 1] [2018-07-25 13:27:18,295 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:18,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1715560063, now seen corresponding path program 39 times [2018-07-25 13:27:18,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 33552 backedges. 0 proven. 32832 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2018-07-25 13:27:18,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:18,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 13:27:18,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 13:27:18,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 13:27:18,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:27:18,734 INFO L87 Difference]: Start difference. First operand 437 states and 473 transitions. Second operand 39 states. [2018-07-25 13:27:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:19,232 INFO L93 Difference]: Finished difference Result 461 states and 499 transitions. [2018-07-25 13:27:19,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 13:27:19,232 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 436 [2018-07-25 13:27:19,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:19,235 INFO L225 Difference]: With dead ends: 461 [2018-07-25 13:27:19,235 INFO L226 Difference]: Without dead ends: 459 [2018-07-25 13:27:19,236 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 13:27:19,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-07-25 13:27:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 449. [2018-07-25 13:27:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-07-25 13:27:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 486 transitions. [2018-07-25 13:27:19,490 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 486 transitions. Word has length 436 [2018-07-25 13:27:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:19,490 INFO L472 AbstractCegarLoop]: Abstraction has 449 states and 486 transitions. [2018-07-25 13:27:19,490 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 13:27:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 486 transitions. [2018-07-25 13:27:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-07-25 13:27:19,493 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:19,494 INFO L354 BasicCegarLoop]: trace histogram [185, 148, 38, 37, 37, 1, 1, 1] [2018-07-25 13:27:19,494 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:19,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1555365821, now seen corresponding path program 40 times [2018-07-25 13:27:19,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 35446 backedges. 0 proven. 34706 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2018-07-25 13:27:19,980 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:19,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 13:27:19,980 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 13:27:19,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 13:27:19,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:27:19,982 INFO L87 Difference]: Start difference. First operand 449 states and 486 transitions. Second operand 40 states. [2018-07-25 13:27:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:20,388 INFO L93 Difference]: Finished difference Result 473 states and 512 transitions. [2018-07-25 13:27:20,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 13:27:20,389 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 448 [2018-07-25 13:27:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:20,391 INFO L225 Difference]: With dead ends: 473 [2018-07-25 13:27:20,391 INFO L226 Difference]: Without dead ends: 471 [2018-07-25 13:27:20,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 13:27:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-07-25 13:27:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 461. [2018-07-25 13:27:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-07-25 13:27:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 499 transitions. [2018-07-25 13:27:20,594 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 499 transitions. Word has length 448 [2018-07-25 13:27:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:20,595 INFO L472 AbstractCegarLoop]: Abstraction has 461 states and 499 transitions. [2018-07-25 13:27:20,595 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 13:27:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 499 transitions. [2018-07-25 13:27:20,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-07-25 13:27:20,597 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:20,597 INFO L354 BasicCegarLoop]: trace histogram [190, 152, 39, 38, 38, 1, 1, 1] [2018-07-25 13:27:20,597 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:20,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1769649147, now seen corresponding path program 41 times [2018-07-25 13:27:20,598 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 37392 backedges. 0 proven. 36632 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2018-07-25 13:27:21,136 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:21,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 13:27:21,137 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 13:27:21,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 13:27:21,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:27:21,138 INFO L87 Difference]: Start difference. First operand 461 states and 499 transitions. Second operand 41 states. [2018-07-25 13:27:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:21,640 INFO L93 Difference]: Finished difference Result 485 states and 525 transitions. [2018-07-25 13:27:21,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 13:27:21,640 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 460 [2018-07-25 13:27:21,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:21,643 INFO L225 Difference]: With dead ends: 485 [2018-07-25 13:27:21,643 INFO L226 Difference]: Without dead ends: 483 [2018-07-25 13:27:21,644 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 13:27:21,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-07-25 13:27:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 473. [2018-07-25 13:27:21,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-07-25 13:27:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 512 transitions. [2018-07-25 13:27:21,870 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 512 transitions. Word has length 460 [2018-07-25 13:27:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:21,871 INFO L472 AbstractCegarLoop]: Abstraction has 473 states and 512 transitions. [2018-07-25 13:27:21,871 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 13:27:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 512 transitions. [2018-07-25 13:27:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-07-25 13:27:21,874 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:21,874 INFO L354 BasicCegarLoop]: trace histogram [195, 156, 40, 39, 39, 1, 1, 1] [2018-07-25 13:27:21,875 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:21,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1527642937, now seen corresponding path program 42 times [2018-07-25 13:27:21,875 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 39390 backedges. 0 proven. 38610 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-07-25 13:27:22,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:22,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 13:27:22,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 13:27:22,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 13:27:22,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:27:22,376 INFO L87 Difference]: Start difference. First operand 473 states and 512 transitions. Second operand 42 states. [2018-07-25 13:27:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:22,791 INFO L93 Difference]: Finished difference Result 497 states and 538 transitions. [2018-07-25 13:27:22,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 13:27:22,791 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 472 [2018-07-25 13:27:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:22,793 INFO L225 Difference]: With dead ends: 497 [2018-07-25 13:27:22,794 INFO L226 Difference]: Without dead ends: 495 [2018-07-25 13:27:22,795 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 13:27:22,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-07-25 13:27:23,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 485. [2018-07-25 13:27:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-07-25 13:27:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 525 transitions. [2018-07-25 13:27:23,002 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 525 transitions. Word has length 472 [2018-07-25 13:27:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:23,003 INFO L472 AbstractCegarLoop]: Abstraction has 485 states and 525 transitions. [2018-07-25 13:27:23,003 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 13:27:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 525 transitions. [2018-07-25 13:27:23,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-07-25 13:27:23,006 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:23,006 INFO L354 BasicCegarLoop]: trace histogram [200, 160, 41, 40, 40, 1, 1, 1] [2018-07-25 13:27:23,007 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:23,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1565895305, now seen corresponding path program 43 times [2018-07-25 13:27:23,007 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 41440 backedges. 0 proven. 40640 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2018-07-25 13:27:23,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:23,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 13:27:23,456 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 13:27:23,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 13:27:23,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:27:23,456 INFO L87 Difference]: Start difference. First operand 485 states and 525 transitions. Second operand 43 states. [2018-07-25 13:27:23,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:23,916 INFO L93 Difference]: Finished difference Result 509 states and 551 transitions. [2018-07-25 13:27:23,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 13:27:23,916 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 484 [2018-07-25 13:27:23,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:23,918 INFO L225 Difference]: With dead ends: 509 [2018-07-25 13:27:23,918 INFO L226 Difference]: Without dead ends: 507 [2018-07-25 13:27:23,919 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 13:27:23,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-07-25 13:27:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 497. [2018-07-25 13:27:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2018-07-25 13:27:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 538 transitions. [2018-07-25 13:27:24,164 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 538 transitions. Word has length 484 [2018-07-25 13:27:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:24,164 INFO L472 AbstractCegarLoop]: Abstraction has 497 states and 538 transitions. [2018-07-25 13:27:24,164 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 13:27:24,165 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 538 transitions. [2018-07-25 13:27:24,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-07-25 13:27:24,168 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:24,168 INFO L354 BasicCegarLoop]: trace histogram [205, 164, 42, 41, 41, 1, 1, 1] [2018-07-25 13:27:24,168 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:24,169 INFO L82 PathProgramCache]: Analyzing trace with hash 877347509, now seen corresponding path program 44 times [2018-07-25 13:27:24,169 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 43542 backedges. 0 proven. 42722 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2018-07-25 13:27:24,644 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:24,644 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 13:27:24,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 13:27:24,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 13:27:24,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:27:24,646 INFO L87 Difference]: Start difference. First operand 497 states and 538 transitions. Second operand 44 states. [2018-07-25 13:27:25,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:25,090 INFO L93 Difference]: Finished difference Result 521 states and 564 transitions. [2018-07-25 13:27:25,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 13:27:25,090 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 496 [2018-07-25 13:27:25,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:25,093 INFO L225 Difference]: With dead ends: 521 [2018-07-25 13:27:25,093 INFO L226 Difference]: Without dead ends: 519 [2018-07-25 13:27:25,094 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 13:27:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2018-07-25 13:27:25,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 509. [2018-07-25 13:27:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-07-25 13:27:25,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 551 transitions. [2018-07-25 13:27:25,344 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 551 transitions. Word has length 496 [2018-07-25 13:27:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:25,344 INFO L472 AbstractCegarLoop]: Abstraction has 509 states and 551 transitions. [2018-07-25 13:27:25,344 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 13:27:25,345 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 551 transitions. [2018-07-25 13:27:25,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-07-25 13:27:25,348 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:25,348 INFO L354 BasicCegarLoop]: trace histogram [210, 168, 43, 42, 42, 1, 1, 1] [2018-07-25 13:27:25,349 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:25,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1722565363, now seen corresponding path program 45 times [2018-07-25 13:27:25,349 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 45696 backedges. 0 proven. 44856 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2018-07-25 13:27:25,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:25,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 13:27:25,883 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 13:27:25,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 13:27:25,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:27:25,884 INFO L87 Difference]: Start difference. First operand 509 states and 551 transitions. Second operand 45 states. [2018-07-25 13:27:26,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:26,534 INFO L93 Difference]: Finished difference Result 533 states and 577 transitions. [2018-07-25 13:27:26,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 13:27:26,534 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 508 [2018-07-25 13:27:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:26,537 INFO L225 Difference]: With dead ends: 533 [2018-07-25 13:27:26,538 INFO L226 Difference]: Without dead ends: 531 [2018-07-25 13:27:26,539 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 13:27:26,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-07-25 13:27:26,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 521. [2018-07-25 13:27:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2018-07-25 13:27:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 564 transitions. [2018-07-25 13:27:26,837 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 564 transitions. Word has length 508 [2018-07-25 13:27:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:26,837 INFO L472 AbstractCegarLoop]: Abstraction has 521 states and 564 transitions. [2018-07-25 13:27:26,837 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 13:27:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 564 transitions. [2018-07-25 13:27:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-07-25 13:27:26,841 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:26,841 INFO L354 BasicCegarLoop]: trace histogram [215, 172, 44, 43, 43, 1, 1, 1] [2018-07-25 13:27:26,842 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash -750201295, now seen corresponding path program 46 times [2018-07-25 13:27:26,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 47902 backedges. 0 proven. 47042 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2018-07-25 13:27:27,338 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:27,338 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 13:27:27,339 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 13:27:27,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 13:27:27,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:27:27,340 INFO L87 Difference]: Start difference. First operand 521 states and 564 transitions. Second operand 46 states. [2018-07-25 13:27:27,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:27,935 INFO L93 Difference]: Finished difference Result 545 states and 590 transitions. [2018-07-25 13:27:27,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 13:27:27,936 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 520 [2018-07-25 13:27:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:27,938 INFO L225 Difference]: With dead ends: 545 [2018-07-25 13:27:27,939 INFO L226 Difference]: Without dead ends: 543 [2018-07-25 13:27:27,939 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 13:27:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-07-25 13:27:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 533. [2018-07-25 13:27:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2018-07-25 13:27:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 577 transitions. [2018-07-25 13:27:28,220 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 577 transitions. Word has length 520 [2018-07-25 13:27:28,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:28,220 INFO L472 AbstractCegarLoop]: Abstraction has 533 states and 577 transitions. [2018-07-25 13:27:28,220 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 13:27:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 577 transitions. [2018-07-25 13:27:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-07-25 13:27:28,223 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:28,223 INFO L354 BasicCegarLoop]: trace histogram [220, 176, 45, 44, 44, 1, 1, 1] [2018-07-25 13:27:28,223 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:28,223 INFO L82 PathProgramCache]: Analyzing trace with hash 912030831, now seen corresponding path program 47 times [2018-07-25 13:27:28,223 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 50160 backedges. 0 proven. 49280 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-07-25 13:27:29,064 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:29,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 13:27:29,065 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 13:27:29,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 13:27:29,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:27:29,066 INFO L87 Difference]: Start difference. First operand 533 states and 577 transitions. Second operand 47 states. [2018-07-25 13:27:29,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:29,704 INFO L93 Difference]: Finished difference Result 557 states and 603 transitions. [2018-07-25 13:27:29,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 13:27:29,704 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 532 [2018-07-25 13:27:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:29,706 INFO L225 Difference]: With dead ends: 557 [2018-07-25 13:27:29,706 INFO L226 Difference]: Without dead ends: 555 [2018-07-25 13:27:29,707 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 13:27:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2018-07-25 13:27:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 545. [2018-07-25 13:27:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2018-07-25 13:27:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 590 transitions. [2018-07-25 13:27:29,959 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 590 transitions. Word has length 532 [2018-07-25 13:27:29,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:29,960 INFO L472 AbstractCegarLoop]: Abstraction has 545 states and 590 transitions. [2018-07-25 13:27:29,960 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 13:27:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 590 transitions. [2018-07-25 13:27:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-07-25 13:27:29,962 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:29,963 INFO L354 BasicCegarLoop]: trace histogram [225, 180, 46, 45, 45, 1, 1, 1] [2018-07-25 13:27:29,963 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:29,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1323480493, now seen corresponding path program 48 times [2018-07-25 13:27:29,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 52470 backedges. 0 proven. 51570 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2018-07-25 13:27:30,557 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:30,557 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 13:27:30,557 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 13:27:30,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 13:27:30,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:27:30,558 INFO L87 Difference]: Start difference. First operand 545 states and 590 transitions. Second operand 48 states. [2018-07-25 13:27:31,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:31,124 INFO L93 Difference]: Finished difference Result 569 states and 616 transitions. [2018-07-25 13:27:31,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 13:27:31,124 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 544 [2018-07-25 13:27:31,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:31,126 INFO L225 Difference]: With dead ends: 569 [2018-07-25 13:27:31,126 INFO L226 Difference]: Without dead ends: 567 [2018-07-25 13:27:31,127 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 13:27:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2018-07-25 13:27:31,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 557. [2018-07-25 13:27:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2018-07-25 13:27:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 603 transitions. [2018-07-25 13:27:31,408 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 603 transitions. Word has length 544 [2018-07-25 13:27:31,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:31,409 INFO L472 AbstractCegarLoop]: Abstraction has 557 states and 603 transitions. [2018-07-25 13:27:31,409 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 13:27:31,409 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 603 transitions. [2018-07-25 13:27:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2018-07-25 13:27:31,412 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:31,413 INFO L354 BasicCegarLoop]: trace histogram [230, 184, 47, 46, 46, 1, 1, 1] [2018-07-25 13:27:31,413 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:31,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1097399829, now seen corresponding path program 49 times [2018-07-25 13:27:31,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 54832 backedges. 0 proven. 53912 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2018-07-25 13:27:32,042 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:32,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 13:27:32,042 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 13:27:32,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 13:27:32,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:27:32,043 INFO L87 Difference]: Start difference. First operand 557 states and 603 transitions. Second operand 49 states. [2018-07-25 13:27:32,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:32,617 INFO L93 Difference]: Finished difference Result 581 states and 629 transitions. [2018-07-25 13:27:32,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 13:27:32,617 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 556 [2018-07-25 13:27:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:32,620 INFO L225 Difference]: With dead ends: 581 [2018-07-25 13:27:32,620 INFO L226 Difference]: Without dead ends: 579 [2018-07-25 13:27:32,621 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 13:27:32,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2018-07-25 13:27:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 569. [2018-07-25 13:27:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2018-07-25 13:27:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 616 transitions. [2018-07-25 13:27:32,912 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 616 transitions. Word has length 556 [2018-07-25 13:27:32,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:32,912 INFO L472 AbstractCegarLoop]: Abstraction has 569 states and 616 transitions. [2018-07-25 13:27:32,913 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 13:27:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 616 transitions. [2018-07-25 13:27:32,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-07-25 13:27:32,916 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:32,917 INFO L354 BasicCegarLoop]: trace histogram [235, 188, 48, 47, 47, 1, 1, 1] [2018-07-25 13:27:32,917 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:32,917 INFO L82 PathProgramCache]: Analyzing trace with hash -369827543, now seen corresponding path program 50 times [2018-07-25 13:27:32,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 57246 backedges. 0 proven. 56306 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2018-07-25 13:27:33,517 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:33,517 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 13:27:33,518 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 13:27:33,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 13:27:33,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:27:33,519 INFO L87 Difference]: Start difference. First operand 569 states and 616 transitions. Second operand 50 states. [2018-07-25 13:27:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:34,080 INFO L93 Difference]: Finished difference Result 593 states and 642 transitions. [2018-07-25 13:27:34,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 13:27:34,080 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 568 [2018-07-25 13:27:34,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:34,083 INFO L225 Difference]: With dead ends: 593 [2018-07-25 13:27:34,083 INFO L226 Difference]: Without dead ends: 591 [2018-07-25 13:27:34,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 13:27:34,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-07-25 13:27:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 581. [2018-07-25 13:27:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-07-25 13:27:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 629 transitions. [2018-07-25 13:27:34,455 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 629 transitions. Word has length 568 [2018-07-25 13:27:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:34,455 INFO L472 AbstractCegarLoop]: Abstraction has 581 states and 629 transitions. [2018-07-25 13:27:34,455 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 13:27:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 629 transitions. [2018-07-25 13:27:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2018-07-25 13:27:34,460 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:34,460 INFO L354 BasicCegarLoop]: trace histogram [240, 192, 49, 48, 48, 1, 1, 1] [2018-07-25 13:27:34,460 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:34,461 INFO L82 PathProgramCache]: Analyzing trace with hash -667430041, now seen corresponding path program 51 times [2018-07-25 13:27:34,461 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 59712 backedges. 0 proven. 58752 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2018-07-25 13:27:35,152 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:35,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 13:27:35,153 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 13:27:35,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 13:27:35,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:27:35,154 INFO L87 Difference]: Start difference. First operand 581 states and 629 transitions. Second operand 51 states. [2018-07-25 13:27:35,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:35,762 INFO L93 Difference]: Finished difference Result 605 states and 655 transitions. [2018-07-25 13:27:35,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 13:27:35,762 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 580 [2018-07-25 13:27:35,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:35,765 INFO L225 Difference]: With dead ends: 605 [2018-07-25 13:27:35,765 INFO L226 Difference]: Without dead ends: 603 [2018-07-25 13:27:35,766 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 13:27:35,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2018-07-25 13:27:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 593. [2018-07-25 13:27:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2018-07-25 13:27:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 642 transitions. [2018-07-25 13:27:36,049 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 642 transitions. Word has length 580 [2018-07-25 13:27:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:36,049 INFO L472 AbstractCegarLoop]: Abstraction has 593 states and 642 transitions. [2018-07-25 13:27:36,049 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 13:27:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 642 transitions. [2018-07-25 13:27:36,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-07-25 13:27:36,052 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:36,053 INFO L354 BasicCegarLoop]: trace histogram [245, 196, 50, 49, 49, 1, 1, 1] [2018-07-25 13:27:36,053 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:36,053 INFO L82 PathProgramCache]: Analyzing trace with hash 324753573, now seen corresponding path program 52 times [2018-07-25 13:27:36,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 62230 backedges. 0 proven. 61250 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2018-07-25 13:27:36,722 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:36,722 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 13:27:36,722 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 13:27:36,723 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 13:27:36,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:27:36,723 INFO L87 Difference]: Start difference. First operand 593 states and 642 transitions. Second operand 52 states. [2018-07-25 13:27:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:37,367 INFO L93 Difference]: Finished difference Result 617 states and 668 transitions. [2018-07-25 13:27:37,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 13:27:37,368 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 592 [2018-07-25 13:27:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:37,371 INFO L225 Difference]: With dead ends: 617 [2018-07-25 13:27:37,371 INFO L226 Difference]: Without dead ends: 615 [2018-07-25 13:27:37,372 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 13:27:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2018-07-25 13:27:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 605. [2018-07-25 13:27:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2018-07-25 13:27:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 655 transitions. [2018-07-25 13:27:37,728 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 655 transitions. Word has length 592 [2018-07-25 13:27:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:37,728 INFO L472 AbstractCegarLoop]: Abstraction has 605 states and 655 transitions. [2018-07-25 13:27:37,728 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 13:27:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 655 transitions. [2018-07-25 13:27:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2018-07-25 13:27:37,733 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:37,733 INFO L354 BasicCegarLoop]: trace histogram [250, 200, 51, 50, 50, 1, 1, 1] [2018-07-25 13:27:37,733 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:37,734 INFO L82 PathProgramCache]: Analyzing trace with hash -2011500317, now seen corresponding path program 53 times [2018-07-25 13:27:37,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 64800 backedges. 0 proven. 63800 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2018-07-25 13:27:38,573 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:38,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 13:27:38,573 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 13:27:38,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 13:27:38,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:27:38,574 INFO L87 Difference]: Start difference. First operand 605 states and 655 transitions. Second operand 53 states. [2018-07-25 13:27:39,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:39,223 INFO L93 Difference]: Finished difference Result 629 states and 681 transitions. [2018-07-25 13:27:39,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 13:27:39,223 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 604 [2018-07-25 13:27:39,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:39,226 INFO L225 Difference]: With dead ends: 629 [2018-07-25 13:27:39,226 INFO L226 Difference]: Without dead ends: 627 [2018-07-25 13:27:39,226 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 13:27:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2018-07-25 13:27:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 617. [2018-07-25 13:27:39,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2018-07-25 13:27:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 668 transitions. [2018-07-25 13:27:39,550 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 668 transitions. Word has length 604 [2018-07-25 13:27:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:39,551 INFO L472 AbstractCegarLoop]: Abstraction has 617 states and 668 transitions. [2018-07-25 13:27:39,551 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 13:27:39,551 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 668 transitions. [2018-07-25 13:27:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2018-07-25 13:27:39,555 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:39,555 INFO L354 BasicCegarLoop]: trace histogram [255, 204, 52, 51, 51, 1, 1, 1] [2018-07-25 13:27:39,556 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:39,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1710365729, now seen corresponding path program 54 times [2018-07-25 13:27:39,556 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 67422 backedges. 0 proven. 66402 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2018-07-25 13:27:40,236 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:40,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 13:27:40,236 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 13:27:40,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 13:27:40,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:27:40,237 INFO L87 Difference]: Start difference. First operand 617 states and 668 transitions. Second operand 54 states. [2018-07-25 13:27:40,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:40,980 INFO L93 Difference]: Finished difference Result 641 states and 694 transitions. [2018-07-25 13:27:40,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 13:27:40,981 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 616 [2018-07-25 13:27:40,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:40,983 INFO L225 Difference]: With dead ends: 641 [2018-07-25 13:27:40,983 INFO L226 Difference]: Without dead ends: 639 [2018-07-25 13:27:40,984 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 13:27:40,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2018-07-25 13:27:41,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 629. [2018-07-25 13:27:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2018-07-25 13:27:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 681 transitions. [2018-07-25 13:27:41,356 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 681 transitions. Word has length 616 [2018-07-25 13:27:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:41,357 INFO L472 AbstractCegarLoop]: Abstraction has 629 states and 681 transitions. [2018-07-25 13:27:41,357 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 13:27:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 681 transitions. [2018-07-25 13:27:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2018-07-25 13:27:41,361 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:41,361 INFO L354 BasicCegarLoop]: trace histogram [260, 208, 53, 52, 52, 1, 1, 1] [2018-07-25 13:27:41,362 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:41,362 INFO L82 PathProgramCache]: Analyzing trace with hash -14919073, now seen corresponding path program 55 times [2018-07-25 13:27:41,362 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 70096 backedges. 0 proven. 69056 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2018-07-25 13:27:42,060 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:42,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 13:27:42,060 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 13:27:42,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 13:27:42,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:27:42,061 INFO L87 Difference]: Start difference. First operand 629 states and 681 transitions. Second operand 55 states. [2018-07-25 13:27:42,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:42,737 INFO L93 Difference]: Finished difference Result 653 states and 707 transitions. [2018-07-25 13:27:42,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 13:27:42,737 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 628 [2018-07-25 13:27:42,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:42,739 INFO L225 Difference]: With dead ends: 653 [2018-07-25 13:27:42,739 INFO L226 Difference]: Without dead ends: 651 [2018-07-25 13:27:42,740 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 13:27:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2018-07-25 13:27:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 641. [2018-07-25 13:27:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2018-07-25 13:27:43,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 694 transitions. [2018-07-25 13:27:43,092 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 694 transitions. Word has length 628 [2018-07-25 13:27:43,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:43,092 INFO L472 AbstractCegarLoop]: Abstraction has 641 states and 694 transitions. [2018-07-25 13:27:43,092 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 13:27:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 694 transitions. [2018-07-25 13:27:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-07-25 13:27:43,096 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:43,097 INFO L354 BasicCegarLoop]: trace histogram [265, 212, 54, 53, 53, 1, 1, 1] [2018-07-25 13:27:43,097 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:43,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1466618979, now seen corresponding path program 56 times [2018-07-25 13:27:43,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 72822 backedges. 0 proven. 71762 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2018-07-25 13:27:43,858 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:43,858 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 13:27:43,859 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 13:27:43,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 13:27:43,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:27:43,860 INFO L87 Difference]: Start difference. First operand 641 states and 694 transitions. Second operand 56 states. [2018-07-25 13:27:44,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:44,672 INFO L93 Difference]: Finished difference Result 665 states and 720 transitions. [2018-07-25 13:27:44,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 13:27:44,673 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 640 [2018-07-25 13:27:44,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:44,675 INFO L225 Difference]: With dead ends: 665 [2018-07-25 13:27:44,675 INFO L226 Difference]: Without dead ends: 663 [2018-07-25 13:27:44,675 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 13:27:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2018-07-25 13:27:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 653. [2018-07-25 13:27:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2018-07-25 13:27:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 707 transitions. [2018-07-25 13:27:45,051 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 707 transitions. Word has length 640 [2018-07-25 13:27:45,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:45,051 INFO L472 AbstractCegarLoop]: Abstraction has 653 states and 707 transitions. [2018-07-25 13:27:45,051 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 13:27:45,051 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 707 transitions. [2018-07-25 13:27:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2018-07-25 13:27:45,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:45,054 INFO L354 BasicCegarLoop]: trace histogram [270, 216, 55, 54, 54, 1, 1, 1] [2018-07-25 13:27:45,055 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:45,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1709699109, now seen corresponding path program 57 times [2018-07-25 13:27:45,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 75600 backedges. 0 proven. 74520 refuted. 0 times theorem prover too weak. 1080 trivial. 0 not checked. [2018-07-25 13:27:45,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:45,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 13:27:45,758 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 13:27:45,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 13:27:45,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:27:45,759 INFO L87 Difference]: Start difference. First operand 653 states and 707 transitions. Second operand 57 states. [2018-07-25 13:27:46,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:46,495 INFO L93 Difference]: Finished difference Result 677 states and 733 transitions. [2018-07-25 13:27:46,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 13:27:46,496 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 652 [2018-07-25 13:27:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:46,498 INFO L225 Difference]: With dead ends: 677 [2018-07-25 13:27:46,498 INFO L226 Difference]: Without dead ends: 675 [2018-07-25 13:27:46,499 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 13:27:46,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2018-07-25 13:27:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 665. [2018-07-25 13:27:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2018-07-25 13:27:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 720 transitions. [2018-07-25 13:27:46,860 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 720 transitions. Word has length 652 [2018-07-25 13:27:46,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:46,860 INFO L472 AbstractCegarLoop]: Abstraction has 665 states and 720 transitions. [2018-07-25 13:27:46,860 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 13:27:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 720 transitions. [2018-07-25 13:27:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-07-25 13:27:46,864 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:46,864 INFO L354 BasicCegarLoop]: trace histogram [275, 220, 56, 55, 55, 1, 1, 1] [2018-07-25 13:27:46,865 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:46,865 INFO L82 PathProgramCache]: Analyzing trace with hash -836729063, now seen corresponding path program 58 times [2018-07-25 13:27:46,865 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 78430 backedges. 0 proven. 77330 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2018-07-25 13:27:47,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:47,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 13:27:47,706 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 13:27:47,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 13:27:47,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:27:47,707 INFO L87 Difference]: Start difference. First operand 665 states and 720 transitions. Second operand 58 states. [2018-07-25 13:27:48,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:48,441 INFO L93 Difference]: Finished difference Result 689 states and 746 transitions. [2018-07-25 13:27:48,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 13:27:48,441 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 664 [2018-07-25 13:27:48,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:48,444 INFO L225 Difference]: With dead ends: 689 [2018-07-25 13:27:48,444 INFO L226 Difference]: Without dead ends: 687 [2018-07-25 13:27:48,444 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 13:27:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2018-07-25 13:27:48,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 677. [2018-07-25 13:27:48,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2018-07-25 13:27:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 733 transitions. [2018-07-25 13:27:48,850 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 733 transitions. Word has length 664 [2018-07-25 13:27:48,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:48,850 INFO L472 AbstractCegarLoop]: Abstraction has 677 states and 733 transitions. [2018-07-25 13:27:48,850 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 13:27:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 733 transitions. [2018-07-25 13:27:48,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2018-07-25 13:27:48,853 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:48,854 INFO L354 BasicCegarLoop]: trace histogram [280, 224, 57, 56, 56, 1, 1, 1] [2018-07-25 13:27:48,854 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:48,854 INFO L82 PathProgramCache]: Analyzing trace with hash -504753833, now seen corresponding path program 59 times [2018-07-25 13:27:48,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 81312 backedges. 0 proven. 80192 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2018-07-25 13:27:49,617 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:49,617 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 13:27:49,618 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 13:27:49,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 13:27:49,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:27:49,618 INFO L87 Difference]: Start difference. First operand 677 states and 733 transitions. Second operand 59 states. [2018-07-25 13:27:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:50,425 INFO L93 Difference]: Finished difference Result 701 states and 759 transitions. [2018-07-25 13:27:50,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 13:27:50,425 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 676 [2018-07-25 13:27:50,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:50,429 INFO L225 Difference]: With dead ends: 701 [2018-07-25 13:27:50,429 INFO L226 Difference]: Without dead ends: 699 [2018-07-25 13:27:50,430 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 13:27:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-07-25 13:27:50,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 689. [2018-07-25 13:27:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2018-07-25 13:27:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 746 transitions. [2018-07-25 13:27:50,896 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 746 transitions. Word has length 676 [2018-07-25 13:27:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:50,896 INFO L472 AbstractCegarLoop]: Abstraction has 689 states and 746 transitions. [2018-07-25 13:27:50,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 13:27:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 746 transitions. [2018-07-25 13:27:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-07-25 13:27:50,899 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:50,899 INFO L354 BasicCegarLoop]: trace histogram [285, 228, 58, 57, 57, 1, 1, 1] [2018-07-25 13:27:50,900 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:50,900 INFO L82 PathProgramCache]: Analyzing trace with hash -177197419, now seen corresponding path program 60 times [2018-07-25 13:27:50,900 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 84246 backedges. 0 proven. 83106 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2018-07-25 13:27:51,688 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:51,688 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 13:27:51,689 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 13:27:51,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 13:27:51,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:27:51,690 INFO L87 Difference]: Start difference. First operand 689 states and 746 transitions. Second operand 60 states. [2018-07-25 13:27:52,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:52,578 INFO L93 Difference]: Finished difference Result 713 states and 772 transitions. [2018-07-25 13:27:52,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 13:27:52,578 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 688 [2018-07-25 13:27:52,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:52,580 INFO L225 Difference]: With dead ends: 713 [2018-07-25 13:27:52,580 INFO L226 Difference]: Without dead ends: 711 [2018-07-25 13:27:52,581 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 13:27:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2018-07-25 13:27:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 701. [2018-07-25 13:27:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2018-07-25 13:27:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 759 transitions. [2018-07-25 13:27:53,010 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 759 transitions. Word has length 688 [2018-07-25 13:27:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:53,011 INFO L472 AbstractCegarLoop]: Abstraction has 701 states and 759 transitions. [2018-07-25 13:27:53,011 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 13:27:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 759 transitions. [2018-07-25 13:27:53,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2018-07-25 13:27:53,015 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:53,015 INFO L354 BasicCegarLoop]: trace histogram [290, 232, 59, 58, 58, 1, 1, 1] [2018-07-25 13:27:53,015 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:53,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1955701037, now seen corresponding path program 61 times [2018-07-25 13:27:53,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 87232 backedges. 0 proven. 86072 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2018-07-25 13:27:53,859 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:53,859 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 13:27:53,860 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 13:27:53,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 13:27:53,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:27:53,861 INFO L87 Difference]: Start difference. First operand 701 states and 759 transitions. Second operand 61 states. [2018-07-25 13:27:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:54,692 INFO L93 Difference]: Finished difference Result 725 states and 785 transitions. [2018-07-25 13:27:54,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 13:27:54,692 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 700 [2018-07-25 13:27:54,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:54,695 INFO L225 Difference]: With dead ends: 725 [2018-07-25 13:27:54,695 INFO L226 Difference]: Without dead ends: 723 [2018-07-25 13:27:54,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 13:27:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2018-07-25 13:27:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 713. [2018-07-25 13:27:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2018-07-25 13:27:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 772 transitions. [2018-07-25 13:27:55,099 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 772 transitions. Word has length 700 [2018-07-25 13:27:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:55,100 INFO L472 AbstractCegarLoop]: Abstraction has 713 states and 772 transitions. [2018-07-25 13:27:55,100 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 13:27:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 772 transitions. [2018-07-25 13:27:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2018-07-25 13:27:55,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:55,105 INFO L354 BasicCegarLoop]: trace histogram [295, 236, 60, 59, 59, 1, 1, 1] [2018-07-25 13:27:55,105 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:55,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1767907857, now seen corresponding path program 62 times [2018-07-25 13:27:55,106 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 90270 backedges. 0 proven. 89090 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-07-25 13:27:55,936 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:55,936 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 13:27:55,937 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 13:27:55,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 13:27:55,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:27:55,938 INFO L87 Difference]: Start difference. First operand 713 states and 772 transitions. Second operand 62 states. [2018-07-25 13:27:56,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:56,820 INFO L93 Difference]: Finished difference Result 737 states and 798 transitions. [2018-07-25 13:27:56,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:27:56,820 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 712 [2018-07-25 13:27:56,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:56,822 INFO L225 Difference]: With dead ends: 737 [2018-07-25 13:27:56,822 INFO L226 Difference]: Without dead ends: 735 [2018-07-25 13:27:56,823 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 13:27:56,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2018-07-25 13:27:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 725. [2018-07-25 13:27:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2018-07-25 13:27:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 785 transitions. [2018-07-25 13:27:57,266 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 785 transitions. Word has length 712 [2018-07-25 13:27:57,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:57,267 INFO L472 AbstractCegarLoop]: Abstraction has 725 states and 785 transitions. [2018-07-25 13:27:57,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 13:27:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 785 transitions. [2018-07-25 13:27:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2018-07-25 13:27:57,271 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:57,271 INFO L354 BasicCegarLoop]: trace histogram [300, 240, 61, 60, 60, 1, 1, 1] [2018-07-25 13:27:57,271 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:57,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2004940879, now seen corresponding path program 63 times [2018-07-25 13:27:57,272 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:27:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 93360 backedges. 0 proven. 92160 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2018-07-25 13:27:58,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:27:58,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 13:27:58,164 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 13:27:58,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 13:27:58,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:27:58,165 INFO L87 Difference]: Start difference. First operand 725 states and 785 transitions. Second operand 63 states. [2018-07-25 13:27:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:27:59,113 INFO L93 Difference]: Finished difference Result 749 states and 811 transitions. [2018-07-25 13:27:59,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 13:27:59,113 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 724 [2018-07-25 13:27:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:27:59,116 INFO L225 Difference]: With dead ends: 749 [2018-07-25 13:27:59,116 INFO L226 Difference]: Without dead ends: 747 [2018-07-25 13:27:59,117 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 13:27:59,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2018-07-25 13:27:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 737. [2018-07-25 13:27:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2018-07-25 13:27:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 798 transitions. [2018-07-25 13:27:59,557 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 798 transitions. Word has length 724 [2018-07-25 13:27:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:27:59,557 INFO L472 AbstractCegarLoop]: Abstraction has 737 states and 798 transitions. [2018-07-25 13:27:59,557 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 13:27:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 798 transitions. [2018-07-25 13:27:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2018-07-25 13:27:59,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:27:59,561 INFO L354 BasicCegarLoop]: trace histogram [305, 244, 62, 61, 61, 1, 1, 1] [2018-07-25 13:27:59,562 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:27:59,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1597218419, now seen corresponding path program 64 times [2018-07-25 13:27:59,562 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:27:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 96502 backedges. 0 proven. 95282 refuted. 0 times theorem prover too weak. 1220 trivial. 0 not checked. [2018-07-25 13:28:00,472 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:00,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 13:28:00,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 13:28:00,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 13:28:00,474 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:28:00,474 INFO L87 Difference]: Start difference. First operand 737 states and 798 transitions. Second operand 64 states. [2018-07-25 13:28:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:01,389 INFO L93 Difference]: Finished difference Result 761 states and 824 transitions. [2018-07-25 13:28:01,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 13:28:01,389 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 736 [2018-07-25 13:28:01,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:01,392 INFO L225 Difference]: With dead ends: 761 [2018-07-25 13:28:01,392 INFO L226 Difference]: Without dead ends: 759 [2018-07-25 13:28:01,392 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 13:28:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2018-07-25 13:28:01,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 749. [2018-07-25 13:28:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2018-07-25 13:28:01,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 811 transitions. [2018-07-25 13:28:01,845 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 811 transitions. Word has length 736 [2018-07-25 13:28:01,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:01,846 INFO L472 AbstractCegarLoop]: Abstraction has 749 states and 811 transitions. [2018-07-25 13:28:01,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 13:28:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 811 transitions. [2018-07-25 13:28:01,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2018-07-25 13:28:01,849 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:01,850 INFO L354 BasicCegarLoop]: trace histogram [310, 248, 63, 62, 62, 1, 1, 1] [2018-07-25 13:28:01,850 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:01,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1291985461, now seen corresponding path program 65 times [2018-07-25 13:28:01,850 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 99696 backedges. 0 proven. 98456 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-07-25 13:28:02,768 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:02,768 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 13:28:02,769 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 13:28:02,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 13:28:02,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:28:02,769 INFO L87 Difference]: Start difference. First operand 749 states and 811 transitions. Second operand 65 states. [2018-07-25 13:28:03,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:03,807 INFO L93 Difference]: Finished difference Result 773 states and 837 transitions. [2018-07-25 13:28:03,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 13:28:03,807 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 748 [2018-07-25 13:28:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:03,810 INFO L225 Difference]: With dead ends: 773 [2018-07-25 13:28:03,810 INFO L226 Difference]: Without dead ends: 771 [2018-07-25 13:28:03,810 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 13:28:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2018-07-25 13:28:04,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 761. [2018-07-25 13:28:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2018-07-25 13:28:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 824 transitions. [2018-07-25 13:28:04,283 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 824 transitions. Word has length 748 [2018-07-25 13:28:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:04,284 INFO L472 AbstractCegarLoop]: Abstraction has 761 states and 824 transitions. [2018-07-25 13:28:04,284 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 13:28:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 824 transitions. [2018-07-25 13:28:04,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2018-07-25 13:28:04,287 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:04,288 INFO L354 BasicCegarLoop]: trace histogram [315, 252, 64, 63, 63, 1, 1, 1] [2018-07-25 13:28:04,288 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:04,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1049685257, now seen corresponding path program 66 times [2018-07-25 13:28:04,288 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 102942 backedges. 0 proven. 101682 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-07-25 13:28:05,256 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:05,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 13:28:05,257 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 13:28:05,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 13:28:05,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:28:05,258 INFO L87 Difference]: Start difference. First operand 761 states and 824 transitions. Second operand 66 states. [2018-07-25 13:28:06,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:06,284 INFO L93 Difference]: Finished difference Result 785 states and 850 transitions. [2018-07-25 13:28:06,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 13:28:06,285 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 760 [2018-07-25 13:28:06,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:06,287 INFO L225 Difference]: With dead ends: 785 [2018-07-25 13:28:06,287 INFO L226 Difference]: Without dead ends: 783 [2018-07-25 13:28:06,288 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 13:28:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2018-07-25 13:28:06,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 773. [2018-07-25 13:28:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2018-07-25 13:28:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 837 transitions. [2018-07-25 13:28:06,798 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 837 transitions. Word has length 760 [2018-07-25 13:28:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:06,799 INFO L472 AbstractCegarLoop]: Abstraction has 773 states and 837 transitions. [2018-07-25 13:28:06,799 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 13:28:06,799 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 837 transitions. [2018-07-25 13:28:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2018-07-25 13:28:06,802 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:06,803 INFO L354 BasicCegarLoop]: trace histogram [320, 256, 65, 64, 64, 1, 1, 1] [2018-07-25 13:28:06,803 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:06,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1992363847, now seen corresponding path program 67 times [2018-07-25 13:28:06,803 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 106240 backedges. 0 proven. 104960 refuted. 0 times theorem prover too weak. 1280 trivial. 0 not checked. [2018-07-25 13:28:07,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:07,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 13:28:07,779 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 13:28:07,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 13:28:07,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:28:07,780 INFO L87 Difference]: Start difference. First operand 773 states and 837 transitions. Second operand 67 states. [2018-07-25 13:28:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:08,884 INFO L93 Difference]: Finished difference Result 797 states and 863 transitions. [2018-07-25 13:28:08,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 13:28:08,884 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 772 [2018-07-25 13:28:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:08,887 INFO L225 Difference]: With dead ends: 797 [2018-07-25 13:28:08,887 INFO L226 Difference]: Without dead ends: 795 [2018-07-25 13:28:08,888 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 13:28:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2018-07-25 13:28:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 785. [2018-07-25 13:28:09,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2018-07-25 13:28:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 850 transitions. [2018-07-25 13:28:09,393 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 850 transitions. Word has length 772 [2018-07-25 13:28:09,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:09,394 INFO L472 AbstractCegarLoop]: Abstraction has 785 states and 850 transitions. [2018-07-25 13:28:09,394 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 13:28:09,394 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 850 transitions. [2018-07-25 13:28:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-07-25 13:28:09,398 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:09,398 INFO L354 BasicCegarLoop]: trace histogram [325, 260, 66, 65, 65, 1, 1, 1] [2018-07-25 13:28:09,398 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:09,399 INFO L82 PathProgramCache]: Analyzing trace with hash 294241413, now seen corresponding path program 68 times [2018-07-25 13:28:09,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 109590 backedges. 0 proven. 108290 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2018-07-25 13:28:10,442 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:10,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 13:28:10,443 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 13:28:10,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 13:28:10,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:28:10,443 INFO L87 Difference]: Start difference. First operand 785 states and 850 transitions. Second operand 68 states. [2018-07-25 13:28:11,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:11,522 INFO L93 Difference]: Finished difference Result 809 states and 876 transitions. [2018-07-25 13:28:11,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 13:28:11,522 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 784 [2018-07-25 13:28:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:11,526 INFO L225 Difference]: With dead ends: 809 [2018-07-25 13:28:11,526 INFO L226 Difference]: Without dead ends: 807 [2018-07-25 13:28:11,526 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 13:28:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2018-07-25 13:28:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 797. [2018-07-25 13:28:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-07-25 13:28:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 863 transitions. [2018-07-25 13:28:12,073 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 863 transitions. Word has length 784 [2018-07-25 13:28:12,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:12,073 INFO L472 AbstractCegarLoop]: Abstraction has 797 states and 863 transitions. [2018-07-25 13:28:12,073 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 13:28:12,073 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 863 transitions. [2018-07-25 13:28:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2018-07-25 13:28:12,077 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:12,078 INFO L354 BasicCegarLoop]: trace histogram [330, 264, 67, 66, 66, 1, 1, 1] [2018-07-25 13:28:12,078 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:12,078 INFO L82 PathProgramCache]: Analyzing trace with hash 665226435, now seen corresponding path program 69 times [2018-07-25 13:28:12,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 112992 backedges. 0 proven. 111672 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2018-07-25 13:28:13,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:13,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 13:28:13,158 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 13:28:13,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 13:28:13,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:28:13,158 INFO L87 Difference]: Start difference. First operand 797 states and 863 transitions. Second operand 69 states. [2018-07-25 13:28:14,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:14,384 INFO L93 Difference]: Finished difference Result 821 states and 889 transitions. [2018-07-25 13:28:14,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 13:28:14,384 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 796 [2018-07-25 13:28:14,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:14,387 INFO L225 Difference]: With dead ends: 821 [2018-07-25 13:28:14,387 INFO L226 Difference]: Without dead ends: 819 [2018-07-25 13:28:14,388 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 13:28:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-07-25 13:28:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 809. [2018-07-25 13:28:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2018-07-25 13:28:14,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 876 transitions. [2018-07-25 13:28:14,944 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 876 transitions. Word has length 796 [2018-07-25 13:28:14,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:14,945 INFO L472 AbstractCegarLoop]: Abstraction has 809 states and 876 transitions. [2018-07-25 13:28:14,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 13:28:14,945 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 876 transitions. [2018-07-25 13:28:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2018-07-25 13:28:14,949 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:14,949 INFO L354 BasicCegarLoop]: trace histogram [335, 268, 68, 67, 67, 1, 1, 1] [2018-07-25 13:28:14,950 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:14,950 INFO L82 PathProgramCache]: Analyzing trace with hash 345171969, now seen corresponding path program 70 times [2018-07-25 13:28:14,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 116446 backedges. 0 proven. 115106 refuted. 0 times theorem prover too weak. 1340 trivial. 0 not checked. [2018-07-25 13:28:16,109 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:16,109 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 13:28:16,110 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 13:28:16,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 13:28:16,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:28:16,111 INFO L87 Difference]: Start difference. First operand 809 states and 876 transitions. Second operand 70 states. [2018-07-25 13:28:17,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:17,375 INFO L93 Difference]: Finished difference Result 833 states and 902 transitions. [2018-07-25 13:28:17,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 13:28:17,375 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 808 [2018-07-25 13:28:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:17,379 INFO L225 Difference]: With dead ends: 833 [2018-07-25 13:28:17,379 INFO L226 Difference]: Without dead ends: 831 [2018-07-25 13:28:17,379 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 13:28:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2018-07-25 13:28:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 821. [2018-07-25 13:28:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2018-07-25 13:28:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 889 transitions. [2018-07-25 13:28:17,945 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 889 transitions. Word has length 808 [2018-07-25 13:28:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:17,945 INFO L472 AbstractCegarLoop]: Abstraction has 821 states and 889 transitions. [2018-07-25 13:28:17,945 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 13:28:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 889 transitions. [2018-07-25 13:28:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2018-07-25 13:28:17,949 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:17,950 INFO L354 BasicCegarLoop]: trace histogram [340, 272, 69, 68, 68, 1, 1, 1] [2018-07-25 13:28:17,950 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:17,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1451906623, now seen corresponding path program 71 times [2018-07-25 13:28:17,950 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 119952 backedges. 0 proven. 118592 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2018-07-25 13:28:19,077 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:19,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 13:28:19,078 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 13:28:19,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 13:28:19,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:28:19,079 INFO L87 Difference]: Start difference. First operand 821 states and 889 transitions. Second operand 71 states. [2018-07-25 13:28:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:20,383 INFO L93 Difference]: Finished difference Result 845 states and 915 transitions. [2018-07-25 13:28:20,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 13:28:20,383 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 820 [2018-07-25 13:28:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:20,387 INFO L225 Difference]: With dead ends: 845 [2018-07-25 13:28:20,387 INFO L226 Difference]: Without dead ends: 843 [2018-07-25 13:28:20,388 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 13:28:20,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2018-07-25 13:28:20,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 833. [2018-07-25 13:28:20,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2018-07-25 13:28:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 902 transitions. [2018-07-25 13:28:20,974 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 902 transitions. Word has length 820 [2018-07-25 13:28:20,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:20,974 INFO L472 AbstractCegarLoop]: Abstraction has 833 states and 902 transitions. [2018-07-25 13:28:20,974 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 13:28:20,974 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 902 transitions. [2018-07-25 13:28:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2018-07-25 13:28:20,979 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:20,979 INFO L354 BasicCegarLoop]: trace histogram [345, 276, 70, 69, 69, 1, 1, 1] [2018-07-25 13:28:20,979 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1854429053, now seen corresponding path program 72 times [2018-07-25 13:28:20,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 123510 backedges. 0 proven. 122130 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2018-07-25 13:28:22,131 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:22,131 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 13:28:22,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 13:28:22,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 13:28:22,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:28:22,132 INFO L87 Difference]: Start difference. First operand 833 states and 902 transitions. Second operand 72 states. [2018-07-25 13:28:23,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:23,387 INFO L93 Difference]: Finished difference Result 857 states and 928 transitions. [2018-07-25 13:28:23,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 13:28:23,387 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 832 [2018-07-25 13:28:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:23,389 INFO L225 Difference]: With dead ends: 857 [2018-07-25 13:28:23,389 INFO L226 Difference]: Without dead ends: 855 [2018-07-25 13:28:23,390 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 13:28:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2018-07-25 13:28:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 845. [2018-07-25 13:28:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2018-07-25 13:28:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 915 transitions. [2018-07-25 13:28:24,015 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 915 transitions. Word has length 832 [2018-07-25 13:28:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:24,015 INFO L472 AbstractCegarLoop]: Abstraction has 845 states and 915 transitions. [2018-07-25 13:28:24,015 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 13:28:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 915 transitions. [2018-07-25 13:28:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2018-07-25 13:28:24,020 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:24,021 INFO L354 BasicCegarLoop]: trace histogram [350, 280, 71, 70, 70, 1, 1, 1] [2018-07-25 13:28:24,021 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:24,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1068995653, now seen corresponding path program 73 times [2018-07-25 13:28:24,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 127120 backedges. 0 proven. 125720 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2018-07-25 13:28:25,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:25,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 13:28:25,258 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 13:28:25,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 13:28:25,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:28:25,259 INFO L87 Difference]: Start difference. First operand 845 states and 915 transitions. Second operand 73 states. [2018-07-25 13:28:26,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:26,574 INFO L93 Difference]: Finished difference Result 869 states and 941 transitions. [2018-07-25 13:28:26,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 13:28:26,574 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 844 [2018-07-25 13:28:26,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:26,576 INFO L225 Difference]: With dead ends: 869 [2018-07-25 13:28:26,576 INFO L226 Difference]: Without dead ends: 867 [2018-07-25 13:28:26,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 13:28:26,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2018-07-25 13:28:27,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 857. [2018-07-25 13:28:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2018-07-25 13:28:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 928 transitions. [2018-07-25 13:28:27,205 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 928 transitions. Word has length 844 [2018-07-25 13:28:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:27,205 INFO L472 AbstractCegarLoop]: Abstraction has 857 states and 928 transitions. [2018-07-25 13:28:27,206 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 13:28:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 928 transitions. [2018-07-25 13:28:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2018-07-25 13:28:27,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:27,210 INFO L354 BasicCegarLoop]: trace histogram [355, 284, 72, 71, 71, 1, 1, 1] [2018-07-25 13:28:27,210 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:27,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1917195001, now seen corresponding path program 74 times [2018-07-25 13:28:27,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 130782 backedges. 0 proven. 129362 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2018-07-25 13:28:28,397 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:28,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 13:28:28,398 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 13:28:28,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 13:28:28,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:28:28,399 INFO L87 Difference]: Start difference. First operand 857 states and 928 transitions. Second operand 74 states. [2018-07-25 13:28:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:29,842 INFO L93 Difference]: Finished difference Result 881 states and 954 transitions. [2018-07-25 13:28:29,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 13:28:29,842 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 856 [2018-07-25 13:28:29,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:29,845 INFO L225 Difference]: With dead ends: 881 [2018-07-25 13:28:29,845 INFO L226 Difference]: Without dead ends: 879 [2018-07-25 13:28:29,845 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 13:28:29,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2018-07-25 13:28:30,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 869. [2018-07-25 13:28:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2018-07-25 13:28:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 941 transitions. [2018-07-25 13:28:30,503 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 941 transitions. Word has length 856 [2018-07-25 13:28:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:30,503 INFO L472 AbstractCegarLoop]: Abstraction has 869 states and 941 transitions. [2018-07-25 13:28:30,503 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 13:28:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 941 transitions. [2018-07-25 13:28:30,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2018-07-25 13:28:30,508 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:30,508 INFO L354 BasicCegarLoop]: trace histogram [360, 288, 73, 72, 72, 1, 1, 1] [2018-07-25 13:28:30,509 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:30,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1304218935, now seen corresponding path program 75 times [2018-07-25 13:28:30,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 134496 backedges. 0 proven. 133056 refuted. 0 times theorem prover too weak. 1440 trivial. 0 not checked. [2018-07-25 13:28:31,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:31,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 13:28:31,743 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 13:28:31,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 13:28:31,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:28:31,744 INFO L87 Difference]: Start difference. First operand 869 states and 941 transitions. Second operand 75 states. [2018-07-25 13:28:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:33,251 INFO L93 Difference]: Finished difference Result 893 states and 967 transitions. [2018-07-25 13:28:33,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 13:28:33,251 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 868 [2018-07-25 13:28:33,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:33,253 INFO L225 Difference]: With dead ends: 893 [2018-07-25 13:28:33,253 INFO L226 Difference]: Without dead ends: 891 [2018-07-25 13:28:33,253 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 13:28:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2018-07-25 13:28:33,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 881. [2018-07-25 13:28:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2018-07-25 13:28:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 954 transitions. [2018-07-25 13:28:33,946 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 954 transitions. Word has length 868 [2018-07-25 13:28:33,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:33,947 INFO L472 AbstractCegarLoop]: Abstraction has 881 states and 954 transitions. [2018-07-25 13:28:33,947 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 13:28:33,947 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 954 transitions. [2018-07-25 13:28:33,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2018-07-25 13:28:33,953 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:33,953 INFO L354 BasicCegarLoop]: trace histogram [365, 292, 74, 73, 73, 1, 1, 1] [2018-07-25 13:28:33,953 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1633150347, now seen corresponding path program 76 times [2018-07-25 13:28:33,954 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 138262 backedges. 0 proven. 136802 refuted. 0 times theorem prover too weak. 1460 trivial. 0 not checked. [2018-07-25 13:28:35,220 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:35,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 13:28:35,221 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 13:28:35,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 13:28:35,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:28:35,221 INFO L87 Difference]: Start difference. First operand 881 states and 954 transitions. Second operand 76 states. [2018-07-25 13:28:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:36,667 INFO L93 Difference]: Finished difference Result 905 states and 980 transitions. [2018-07-25 13:28:36,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 13:28:36,667 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 880 [2018-07-25 13:28:36,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:36,668 INFO L225 Difference]: With dead ends: 905 [2018-07-25 13:28:36,669 INFO L226 Difference]: Without dead ends: 903 [2018-07-25 13:28:36,669 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 13:28:36,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2018-07-25 13:28:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 893. [2018-07-25 13:28:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2018-07-25 13:28:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 967 transitions. [2018-07-25 13:28:37,355 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 967 transitions. Word has length 880 [2018-07-25 13:28:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:37,356 INFO L472 AbstractCegarLoop]: Abstraction has 893 states and 967 transitions. [2018-07-25 13:28:37,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 13:28:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 967 transitions. [2018-07-25 13:28:37,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2018-07-25 13:28:37,363 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:37,364 INFO L354 BasicCegarLoop]: trace histogram [370, 296, 75, 74, 74, 1, 1, 1] [2018-07-25 13:28:37,364 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:37,365 INFO L82 PathProgramCache]: Analyzing trace with hash 331578035, now seen corresponding path program 77 times [2018-07-25 13:28:37,365 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 142080 backedges. 0 proven. 140600 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-07-25 13:28:38,694 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:38,694 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 13:28:38,694 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 13:28:38,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 13:28:38,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:28:38,695 INFO L87 Difference]: Start difference. First operand 893 states and 967 transitions. Second operand 77 states. [2018-07-25 13:28:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:40,122 INFO L93 Difference]: Finished difference Result 917 states and 993 transitions. [2018-07-25 13:28:40,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 13:28:40,123 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 892 [2018-07-25 13:28:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:40,124 INFO L225 Difference]: With dead ends: 917 [2018-07-25 13:28:40,125 INFO L226 Difference]: Without dead ends: 915 [2018-07-25 13:28:40,125 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 13:28:40,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2018-07-25 13:28:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 905. [2018-07-25 13:28:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2018-07-25 13:28:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 980 transitions. [2018-07-25 13:28:40,831 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 980 transitions. Word has length 892 [2018-07-25 13:28:40,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:40,832 INFO L472 AbstractCegarLoop]: Abstraction has 905 states and 980 transitions. [2018-07-25 13:28:40,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 13:28:40,832 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 980 transitions. [2018-07-25 13:28:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2018-07-25 13:28:40,838 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:40,839 INFO L354 BasicCegarLoop]: trace histogram [375, 300, 76, 75, 75, 1, 1, 1] [2018-07-25 13:28:40,839 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:40,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1635095055, now seen corresponding path program 78 times [2018-07-25 13:28:40,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 145950 backedges. 0 proven. 144450 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2018-07-25 13:28:42,193 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:42,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 13:28:42,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 13:28:42,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 13:28:42,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:28:42,194 INFO L87 Difference]: Start difference. First operand 905 states and 980 transitions. Second operand 78 states. [2018-07-25 13:28:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:43,738 INFO L93 Difference]: Finished difference Result 929 states and 1006 transitions. [2018-07-25 13:28:43,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 13:28:43,738 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 904 [2018-07-25 13:28:43,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:43,740 INFO L225 Difference]: With dead ends: 929 [2018-07-25 13:28:43,740 INFO L226 Difference]: Without dead ends: 927 [2018-07-25 13:28:43,740 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 13:28:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2018-07-25 13:28:44,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 917. [2018-07-25 13:28:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2018-07-25 13:28:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 993 transitions. [2018-07-25 13:28:44,522 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 993 transitions. Word has length 904 [2018-07-25 13:28:44,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:44,522 INFO L472 AbstractCegarLoop]: Abstraction has 917 states and 993 transitions. [2018-07-25 13:28:44,522 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 13:28:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 993 transitions. [2018-07-25 13:28:44,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2018-07-25 13:28:44,528 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:44,528 INFO L354 BasicCegarLoop]: trace histogram [380, 304, 77, 76, 76, 1, 1, 1] [2018-07-25 13:28:44,528 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1396208687, now seen corresponding path program 79 times [2018-07-25 13:28:44,529 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 149872 backedges. 0 proven. 148352 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2018-07-25 13:28:45,924 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:45,924 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 13:28:45,925 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 13:28:45,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 13:28:45,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:28:45,925 INFO L87 Difference]: Start difference. First operand 917 states and 993 transitions. Second operand 79 states. [2018-07-25 13:28:47,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:47,513 INFO L93 Difference]: Finished difference Result 941 states and 1019 transitions. [2018-07-25 13:28:47,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 13:28:47,513 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 916 [2018-07-25 13:28:47,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:47,515 INFO L225 Difference]: With dead ends: 941 [2018-07-25 13:28:47,515 INFO L226 Difference]: Without dead ends: 939 [2018-07-25 13:28:47,515 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 13:28:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-07-25 13:28:48,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 929. [2018-07-25 13:28:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2018-07-25 13:28:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1006 transitions. [2018-07-25 13:28:48,342 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1006 transitions. Word has length 916 [2018-07-25 13:28:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:48,343 INFO L472 AbstractCegarLoop]: Abstraction has 929 states and 1006 transitions. [2018-07-25 13:28:48,343 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 13:28:48,343 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1006 transitions. [2018-07-25 13:28:48,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2018-07-25 13:28:48,349 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:48,349 INFO L354 BasicCegarLoop]: trace histogram [385, 308, 78, 77, 77, 1, 1, 1] [2018-07-25 13:28:48,349 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:48,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1221135725, now seen corresponding path program 80 times [2018-07-25 13:28:48,350 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 153846 backedges. 0 proven. 152306 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2018-07-25 13:28:49,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:49,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 13:28:49,882 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 13:28:49,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 13:28:49,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:28:49,883 INFO L87 Difference]: Start difference. First operand 929 states and 1006 transitions. Second operand 80 states. [2018-07-25 13:28:51,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:51,425 INFO L93 Difference]: Finished difference Result 953 states and 1032 transitions. [2018-07-25 13:28:51,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 13:28:51,425 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 928 [2018-07-25 13:28:51,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:51,427 INFO L225 Difference]: With dead ends: 953 [2018-07-25 13:28:51,427 INFO L226 Difference]: Without dead ends: 951 [2018-07-25 13:28:51,428 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 13:28:51,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2018-07-25 13:28:52,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 941. [2018-07-25 13:28:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2018-07-25 13:28:52,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1019 transitions. [2018-07-25 13:28:52,265 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1019 transitions. Word has length 928 [2018-07-25 13:28:52,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:52,266 INFO L472 AbstractCegarLoop]: Abstraction has 941 states and 1019 transitions. [2018-07-25 13:28:52,266 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 13:28:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1019 transitions. [2018-07-25 13:28:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2018-07-25 13:28:52,271 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:52,272 INFO L354 BasicCegarLoop]: trace histogram [390, 312, 79, 78, 78, 1, 1, 1] [2018-07-25 13:28:52,272 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:52,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2029500843, now seen corresponding path program 81 times [2018-07-25 13:28:52,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 157872 backedges. 0 proven. 156312 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-07-25 13:28:53,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:53,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 13:28:53,754 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 13:28:53,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 13:28:53,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:28:53,754 INFO L87 Difference]: Start difference. First operand 941 states and 1019 transitions. Second operand 81 states. [2018-07-25 13:28:55,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:55,462 INFO L93 Difference]: Finished difference Result 965 states and 1045 transitions. [2018-07-25 13:28:55,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 13:28:55,462 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 940 [2018-07-25 13:28:55,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:55,464 INFO L225 Difference]: With dead ends: 965 [2018-07-25 13:28:55,464 INFO L226 Difference]: Without dead ends: 963 [2018-07-25 13:28:55,465 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 13:28:55,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2018-07-25 13:28:56,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 953. [2018-07-25 13:28:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2018-07-25 13:28:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1032 transitions. [2018-07-25 13:28:56,279 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1032 transitions. Word has length 940 [2018-07-25 13:28:56,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:56,279 INFO L472 AbstractCegarLoop]: Abstraction has 953 states and 1032 transitions. [2018-07-25 13:28:56,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 13:28:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1032 transitions. [2018-07-25 13:28:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2018-07-25 13:28:56,285 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:56,285 INFO L354 BasicCegarLoop]: trace histogram [395, 316, 80, 79, 79, 1, 1, 1] [2018-07-25 13:28:56,285 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:56,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1606420247, now seen corresponding path program 82 times [2018-07-25 13:28:56,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 161950 backedges. 0 proven. 160370 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2018-07-25 13:28:57,762 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:57,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 13:28:57,763 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 13:28:57,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 13:28:57,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:28:57,763 INFO L87 Difference]: Start difference. First operand 953 states and 1032 transitions. Second operand 82 states. [2018-07-25 13:28:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:59,567 INFO L93 Difference]: Finished difference Result 977 states and 1058 transitions. [2018-07-25 13:28:59,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 13:28:59,567 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 952 [2018-07-25 13:28:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:59,569 INFO L225 Difference]: With dead ends: 977 [2018-07-25 13:28:59,570 INFO L226 Difference]: Without dead ends: 975 [2018-07-25 13:28:59,570 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 13:28:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2018-07-25 13:29:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 965. [2018-07-25 13:29:00,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2018-07-25 13:29:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1045 transitions. [2018-07-25 13:29:00,390 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1045 transitions. Word has length 952 [2018-07-25 13:29:00,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:00,390 INFO L472 AbstractCegarLoop]: Abstraction has 965 states and 1045 transitions. [2018-07-25 13:29:00,390 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 13:29:00,390 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1045 transitions. [2018-07-25 13:29:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2018-07-25 13:29:00,396 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:00,396 INFO L354 BasicCegarLoop]: trace histogram [400, 320, 81, 80, 80, 1, 1, 1] [2018-07-25 13:29:00,396 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash 501041959, now seen corresponding path program 83 times [2018-07-25 13:29:00,397 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 166080 backedges. 0 proven. 164480 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2018-07-25 13:29:01,965 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:01,965 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 13:29:01,965 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 13:29:01,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 13:29:01,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:29:01,966 INFO L87 Difference]: Start difference. First operand 965 states and 1045 transitions. Second operand 83 states. [2018-07-25 13:29:03,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:03,728 INFO L93 Difference]: Finished difference Result 989 states and 1071 transitions. [2018-07-25 13:29:03,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 13:29:03,728 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 964 [2018-07-25 13:29:03,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:03,730 INFO L225 Difference]: With dead ends: 989 [2018-07-25 13:29:03,730 INFO L226 Difference]: Without dead ends: 987 [2018-07-25 13:29:03,731 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 13:29:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2018-07-25 13:29:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 977. [2018-07-25 13:29:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2018-07-25 13:29:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1058 transitions. [2018-07-25 13:29:04,684 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1058 transitions. Word has length 964 [2018-07-25 13:29:04,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:04,684 INFO L472 AbstractCegarLoop]: Abstraction has 977 states and 1058 transitions. [2018-07-25 13:29:04,685 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 13:29:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1058 transitions. [2018-07-25 13:29:04,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2018-07-25 13:29:04,690 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:04,691 INFO L354 BasicCegarLoop]: trace histogram [405, 324, 82, 81, 81, 1, 1, 1] [2018-07-25 13:29:04,691 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:04,692 INFO L82 PathProgramCache]: Analyzing trace with hash -741658523, now seen corresponding path program 84 times [2018-07-25 13:29:04,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 170262 backedges. 0 proven. 168642 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2018-07-25 13:29:06,269 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:06,269 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 13:29:06,269 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 13:29:06,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 13:29:06,270 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:29:06,270 INFO L87 Difference]: Start difference. First operand 977 states and 1058 transitions. Second operand 84 states. [2018-07-25 13:29:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:08,134 INFO L93 Difference]: Finished difference Result 1001 states and 1084 transitions. [2018-07-25 13:29:08,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 13:29:08,134 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 976 [2018-07-25 13:29:08,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:08,137 INFO L225 Difference]: With dead ends: 1001 [2018-07-25 13:29:08,137 INFO L226 Difference]: Without dead ends: 999 [2018-07-25 13:29:08,138 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 13:29:08,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2018-07-25 13:29:09,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 989. [2018-07-25 13:29:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2018-07-25 13:29:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1071 transitions. [2018-07-25 13:29:09,080 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1071 transitions. Word has length 976 [2018-07-25 13:29:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:09,080 INFO L472 AbstractCegarLoop]: Abstraction has 989 states and 1071 transitions. [2018-07-25 13:29:09,081 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 13:29:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1071 transitions. [2018-07-25 13:29:09,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-07-25 13:29:09,087 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:09,088 INFO L354 BasicCegarLoop]: trace histogram [410, 328, 83, 82, 82, 1, 1, 1] [2018-07-25 13:29:09,088 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:09,088 INFO L82 PathProgramCache]: Analyzing trace with hash 113584291, now seen corresponding path program 85 times [2018-07-25 13:29:09,088 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 174496 backedges. 0 proven. 172856 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2018-07-25 13:29:10,817 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:10,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 13:29:10,818 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 13:29:10,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 13:29:10,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:29:10,820 INFO L87 Difference]: Start difference. First operand 989 states and 1071 transitions. Second operand 85 states. [2018-07-25 13:29:12,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:12,819 INFO L93 Difference]: Finished difference Result 1013 states and 1097 transitions. [2018-07-25 13:29:12,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 13:29:12,820 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 988 [2018-07-25 13:29:12,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:12,821 INFO L225 Difference]: With dead ends: 1013 [2018-07-25 13:29:12,821 INFO L226 Difference]: Without dead ends: 1011 [2018-07-25 13:29:12,822 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 13:29:12,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2018-07-25 13:29:13,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2018-07-25 13:29:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2018-07-25 13:29:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1084 transitions. [2018-07-25 13:29:13,747 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1084 transitions. Word has length 988 [2018-07-25 13:29:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:13,748 INFO L472 AbstractCegarLoop]: Abstraction has 1001 states and 1084 transitions. [2018-07-25 13:29:13,748 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 13:29:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1084 transitions. [2018-07-25 13:29:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2018-07-25 13:29:13,755 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:13,755 INFO L354 BasicCegarLoop]: trace histogram [415, 332, 84, 83, 83, 1, 1, 1] [2018-07-25 13:29:13,755 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:13,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1044820961, now seen corresponding path program 86 times [2018-07-25 13:29:13,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 178782 backedges. 0 proven. 177122 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2018-07-25 13:29:15,641 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:15,641 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 13:29:15,642 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 13:29:15,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 13:29:15,642 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:29:15,642 INFO L87 Difference]: Start difference. First operand 1001 states and 1084 transitions. Second operand 86 states. [2018-07-25 13:29:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:17,563 INFO L93 Difference]: Finished difference Result 1025 states and 1110 transitions. [2018-07-25 13:29:17,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 13:29:17,564 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 1000 [2018-07-25 13:29:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:17,566 INFO L225 Difference]: With dead ends: 1025 [2018-07-25 13:29:17,566 INFO L226 Difference]: Without dead ends: 1023 [2018-07-25 13:29:17,567 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 13:29:17,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2018-07-25 13:29:18,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1013. [2018-07-25 13:29:18,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2018-07-25 13:29:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1097 transitions. [2018-07-25 13:29:18,612 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1097 transitions. Word has length 1000 [2018-07-25 13:29:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:18,612 INFO L472 AbstractCegarLoop]: Abstraction has 1013 states and 1097 transitions. [2018-07-25 13:29:18,612 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 13:29:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1097 transitions. [2018-07-25 13:29:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2018-07-25 13:29:18,619 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:18,619 INFO L354 BasicCegarLoop]: trace histogram [420, 336, 85, 84, 84, 1, 1, 1] [2018-07-25 13:29:18,620 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:18,620 INFO L82 PathProgramCache]: Analyzing trace with hash 613110303, now seen corresponding path program 87 times [2018-07-25 13:29:18,620 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 183120 backedges. 0 proven. 181440 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2018-07-25 13:29:20,475 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 [86] total 86 [2018-07-25 13:29:20,476 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 13:29:20,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 13:29:20,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:29:20,477 INFO L87 Difference]: Start difference. First operand 1013 states and 1097 transitions. Second operand 87 states. [2018-07-25 13:29:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:22,452 INFO L93 Difference]: Finished difference Result 1037 states and 1123 transitions. [2018-07-25 13:29:22,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 13:29:22,452 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 1012 [2018-07-25 13:29:22,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:22,454 INFO L225 Difference]: With dead ends: 1037 [2018-07-25 13:29:22,454 INFO L226 Difference]: Without dead ends: 1035 [2018-07-25 13:29:22,454 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 13:29:22,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2018-07-25 13:29:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1025. [2018-07-25 13:29:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2018-07-25 13:29:23,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1110 transitions. [2018-07-25 13:29:23,560 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1110 transitions. Word has length 1012 [2018-07-25 13:29:23,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:23,560 INFO L472 AbstractCegarLoop]: Abstraction has 1025 states and 1110 transitions. [2018-07-25 13:29:23,560 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 13:29:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1110 transitions. [2018-07-25 13:29:23,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2018-07-25 13:29:23,566 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:23,567 INFO L354 BasicCegarLoop]: trace histogram [425, 340, 86, 85, 85, 1, 1, 1] [2018-07-25 13:29:23,567 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:23,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1720615773, now seen corresponding path program 88 times [2018-07-25 13:29:23,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 187510 backedges. 0 proven. 185810 refuted. 0 times theorem prover too weak. 1700 trivial. 0 not checked. [2018-07-25 13:29:25,396 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:25,396 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 13:29:25,397 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 13:29:25,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 13:29:25,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:29:25,398 INFO L87 Difference]: Start difference. First operand 1025 states and 1110 transitions. Second operand 88 states. [2018-07-25 13:29:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:27,516 INFO L93 Difference]: Finished difference Result 1049 states and 1136 transitions. [2018-07-25 13:29:27,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 13:29:27,516 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 1024 [2018-07-25 13:29:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:27,518 INFO L225 Difference]: With dead ends: 1049 [2018-07-25 13:29:27,518 INFO L226 Difference]: Without dead ends: 1047 [2018-07-25 13:29:27,518 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 13:29:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2018-07-25 13:29:28,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1037. [2018-07-25 13:29:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-07-25 13:29:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1123 transitions. [2018-07-25 13:29:28,574 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1123 transitions. Word has length 1024 [2018-07-25 13:29:28,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:28,575 INFO L472 AbstractCegarLoop]: Abstraction has 1037 states and 1123 transitions. [2018-07-25 13:29:28,575 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 13:29:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1123 transitions. [2018-07-25 13:29:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2018-07-25 13:29:28,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:28,581 INFO L354 BasicCegarLoop]: trace histogram [430, 344, 87, 86, 86, 1, 1, 1] [2018-07-25 13:29:28,582 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:28,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1811167333, now seen corresponding path program 89 times [2018-07-25 13:29:28,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 191952 backedges. 0 proven. 190232 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2018-07-25 13:29:30,373 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:30,373 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 13:29:30,374 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 13:29:30,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 13:29:30,374 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:29:30,374 INFO L87 Difference]: Start difference. First operand 1037 states and 1123 transitions. Second operand 89 states. [2018-07-25 13:29:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:32,476 INFO L93 Difference]: Finished difference Result 1061 states and 1149 transitions. [2018-07-25 13:29:32,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 13:29:32,476 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 1036 [2018-07-25 13:29:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:32,478 INFO L225 Difference]: With dead ends: 1061 [2018-07-25 13:29:32,478 INFO L226 Difference]: Without dead ends: 1059 [2018-07-25 13:29:32,479 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 13:29:32,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2018-07-25 13:29:33,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1049. [2018-07-25 13:29:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2018-07-25 13:29:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1136 transitions. [2018-07-25 13:29:33,492 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1136 transitions. Word has length 1036 [2018-07-25 13:29:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:33,492 INFO L472 AbstractCegarLoop]: Abstraction has 1049 states and 1136 transitions. [2018-07-25 13:29:33,492 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 13:29:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1136 transitions. [2018-07-25 13:29:33,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2018-07-25 13:29:33,499 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:33,499 INFO L354 BasicCegarLoop]: trace histogram [435, 348, 88, 87, 87, 1, 1, 1] [2018-07-25 13:29:33,500 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:33,500 INFO L82 PathProgramCache]: Analyzing trace with hash -8479015, now seen corresponding path program 90 times [2018-07-25 13:29:33,500 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 196446 backedges. 0 proven. 194706 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2018-07-25 13:29:35,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:35,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 13:29:35,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 13:29:35,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 13:29:35,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:29:35,434 INFO L87 Difference]: Start difference. First operand 1049 states and 1136 transitions. Second operand 90 states. [2018-07-25 13:29:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:37,631 INFO L93 Difference]: Finished difference Result 1073 states and 1162 transitions. [2018-07-25 13:29:37,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 13:29:37,631 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 1048 [2018-07-25 13:29:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:37,632 INFO L225 Difference]: With dead ends: 1073 [2018-07-25 13:29:37,632 INFO L226 Difference]: Without dead ends: 1071 [2018-07-25 13:29:37,633 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 13:29:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2018-07-25 13:29:38,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1061. [2018-07-25 13:29:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2018-07-25 13:29:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1149 transitions. [2018-07-25 13:29:38,741 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1149 transitions. Word has length 1048 [2018-07-25 13:29:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:38,742 INFO L472 AbstractCegarLoop]: Abstraction has 1061 states and 1149 transitions. [2018-07-25 13:29:38,742 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 13:29:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1149 transitions. [2018-07-25 13:29:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2018-07-25 13:29:38,750 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:38,750 INFO L354 BasicCegarLoop]: trace histogram [440, 352, 89, 88, 88, 1, 1, 1] [2018-07-25 13:29:38,750 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1641903849, now seen corresponding path program 91 times [2018-07-25 13:29:38,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 200992 backedges. 0 proven. 199232 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2018-07-25 13:29:40,724 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:40,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 13:29:40,725 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 13:29:40,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 13:29:40,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:29:40,725 INFO L87 Difference]: Start difference. First operand 1061 states and 1149 transitions. Second operand 91 states. [2018-07-25 13:29:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:42,962 INFO L93 Difference]: Finished difference Result 1085 states and 1175 transitions. [2018-07-25 13:29:42,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 13:29:42,963 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 1060 [2018-07-25 13:29:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:42,964 INFO L225 Difference]: With dead ends: 1085 [2018-07-25 13:29:42,964 INFO L226 Difference]: Without dead ends: 1083 [2018-07-25 13:29:42,965 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 13:29:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2018-07-25 13:29:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1073. [2018-07-25 13:29:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-07-25 13:29:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1162 transitions. [2018-07-25 13:29:44,059 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1162 transitions. Word has length 1060 [2018-07-25 13:29:44,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:44,059 INFO L472 AbstractCegarLoop]: Abstraction has 1073 states and 1162 transitions. [2018-07-25 13:29:44,059 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 13:29:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1162 transitions. [2018-07-25 13:29:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2018-07-25 13:29:44,066 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:44,066 INFO L354 BasicCegarLoop]: trace histogram [445, 356, 90, 89, 89, 1, 1, 1] [2018-07-25 13:29:44,067 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:44,067 INFO L82 PathProgramCache]: Analyzing trace with hash -403503531, now seen corresponding path program 92 times [2018-07-25 13:29:44,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 205590 backedges. 0 proven. 203810 refuted. 0 times theorem prover too weak. 1780 trivial. 0 not checked. [2018-07-25 13:29:46,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:46,071 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 13:29:46,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 13:29:46,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 13:29:46,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:29:46,072 INFO L87 Difference]: Start difference. First operand 1073 states and 1162 transitions. Second operand 92 states. [2018-07-25 13:29:48,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:48,275 INFO L93 Difference]: Finished difference Result 1097 states and 1188 transitions. [2018-07-25 13:29:48,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 13:29:48,275 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 1072 [2018-07-25 13:29:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:48,277 INFO L225 Difference]: With dead ends: 1097 [2018-07-25 13:29:48,277 INFO L226 Difference]: Without dead ends: 1095 [2018-07-25 13:29:48,277 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 13:29:48,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-07-25 13:29:49,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1085. [2018-07-25 13:29:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2018-07-25 13:29:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1175 transitions. [2018-07-25 13:29:49,429 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1175 transitions. Word has length 1072 [2018-07-25 13:29:49,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:49,429 INFO L472 AbstractCegarLoop]: Abstraction has 1085 states and 1175 transitions. [2018-07-25 13:29:49,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 13:29:49,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1175 transitions. [2018-07-25 13:29:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2018-07-25 13:29:49,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:49,438 INFO L354 BasicCegarLoop]: trace histogram [450, 360, 91, 90, 90, 1, 1, 1] [2018-07-25 13:29:49,438 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:49,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1213491565, now seen corresponding path program 93 times [2018-07-25 13:29:49,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 210240 backedges. 0 proven. 208440 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2018-07-25 13:29:51,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:51,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 13:29:51,549 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 13:29:51,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 13:29:51,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:29:51,549 INFO L87 Difference]: Start difference. First operand 1085 states and 1175 transitions. Second operand 93 states. [2018-07-25 13:29:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:53,860 INFO L93 Difference]: Finished difference Result 1109 states and 1201 transitions. [2018-07-25 13:29:53,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 13:29:53,860 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 1084 [2018-07-25 13:29:53,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:53,861 INFO L225 Difference]: With dead ends: 1109 [2018-07-25 13:29:53,862 INFO L226 Difference]: Without dead ends: 1107 [2018-07-25 13:29:53,862 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 13:29:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2018-07-25 13:29:55,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1097. [2018-07-25 13:29:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-07-25 13:29:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1188 transitions. [2018-07-25 13:29:55,012 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1188 transitions. Word has length 1084 [2018-07-25 13:29:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:29:55,012 INFO L472 AbstractCegarLoop]: Abstraction has 1097 states and 1188 transitions. [2018-07-25 13:29:55,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 13:29:55,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1188 transitions. [2018-07-25 13:29:55,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2018-07-25 13:29:55,020 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:29:55,020 INFO L354 BasicCegarLoop]: trace histogram [455, 364, 92, 91, 91, 1, 1, 1] [2018-07-25 13:29:55,020 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:29:55,021 INFO L82 PathProgramCache]: Analyzing trace with hash 717732305, now seen corresponding path program 94 times [2018-07-25 13:29:55,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:29:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:29:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 214942 backedges. 0 proven. 213122 refuted. 0 times theorem prover too weak. 1820 trivial. 0 not checked. [2018-07-25 13:29:57,023 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:29:57,023 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 13:29:57,024 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 13:29:57,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 13:29:57,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:29:57,025 INFO L87 Difference]: Start difference. First operand 1097 states and 1188 transitions. Second operand 94 states. [2018-07-25 13:29:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:29:59,300 INFO L93 Difference]: Finished difference Result 1121 states and 1214 transitions. [2018-07-25 13:29:59,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 13:29:59,300 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 1096 [2018-07-25 13:29:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:29:59,302 INFO L225 Difference]: With dead ends: 1121 [2018-07-25 13:29:59,302 INFO L226 Difference]: Without dead ends: 1119 [2018-07-25 13:29:59,303 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 13:29:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2018-07-25 13:30:00,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1109. [2018-07-25 13:30:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2018-07-25 13:30:00,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1201 transitions. [2018-07-25 13:30:00,444 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1201 transitions. Word has length 1096 [2018-07-25 13:30:00,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:00,445 INFO L472 AbstractCegarLoop]: Abstraction has 1109 states and 1201 transitions. [2018-07-25 13:30:00,445 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 13:30:00,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1201 transitions. [2018-07-25 13:30:00,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2018-07-25 13:30:00,452 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:00,452 INFO L354 BasicCegarLoop]: trace histogram [460, 368, 93, 92, 92, 1, 1, 1] [2018-07-25 13:30:00,453 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:00,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2122125297, now seen corresponding path program 95 times [2018-07-25 13:30:00,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 219696 backedges. 0 proven. 217856 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2018-07-25 13:30:02,557 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:02,557 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 13:30:02,558 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 13:30:02,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 13:30:02,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:30:02,558 INFO L87 Difference]: Start difference. First operand 1109 states and 1201 transitions. Second operand 95 states. [2018-07-25 13:30:04,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:04,854 INFO L93 Difference]: Finished difference Result 1133 states and 1227 transitions. [2018-07-25 13:30:04,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 13:30:04,854 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 1108 [2018-07-25 13:30:04,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:04,856 INFO L225 Difference]: With dead ends: 1133 [2018-07-25 13:30:04,856 INFO L226 Difference]: Without dead ends: 1131 [2018-07-25 13:30:04,856 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 13:30:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2018-07-25 13:30:06,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1121. [2018-07-25 13:30:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2018-07-25 13:30:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1214 transitions. [2018-07-25 13:30:06,021 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1214 transitions. Word has length 1108 [2018-07-25 13:30:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:06,022 INFO L472 AbstractCegarLoop]: Abstraction has 1121 states and 1214 transitions. [2018-07-25 13:30:06,022 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 13:30:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1214 transitions. [2018-07-25 13:30:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2018-07-25 13:30:06,029 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:06,030 INFO L354 BasicCegarLoop]: trace histogram [465, 372, 94, 93, 93, 1, 1, 1] [2018-07-25 13:30:06,030 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:06,030 INFO L82 PathProgramCache]: Analyzing trace with hash -19351219, now seen corresponding path program 96 times [2018-07-25 13:30:06,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 224502 backedges. 0 proven. 222642 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2018-07-25 13:30:08,127 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:08,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 13:30:08,128 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 13:30:08,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 13:30:08,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=8931, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:30:08,129 INFO L87 Difference]: Start difference. First operand 1121 states and 1214 transitions. Second operand 96 states. [2018-07-25 13:30:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:10,466 INFO L93 Difference]: Finished difference Result 1145 states and 1240 transitions. [2018-07-25 13:30:10,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 13:30:10,466 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 1120 [2018-07-25 13:30:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:10,467 INFO L225 Difference]: With dead ends: 1145 [2018-07-25 13:30:10,468 INFO L226 Difference]: Without dead ends: 1143 [2018-07-25 13:30:10,468 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=8931, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 13:30:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2018-07-25 13:30:11,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1133. [2018-07-25 13:30:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2018-07-25 13:30:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1227 transitions. [2018-07-25 13:30:11,659 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1227 transitions. Word has length 1120 [2018-07-25 13:30:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:11,659 INFO L472 AbstractCegarLoop]: Abstraction has 1133 states and 1227 transitions. [2018-07-25 13:30:11,659 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 13:30:11,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1227 transitions. [2018-07-25 13:30:11,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2018-07-25 13:30:11,667 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:11,667 INFO L354 BasicCegarLoop]: trace histogram [470, 376, 95, 94, 94, 1, 1, 1] [2018-07-25 13:30:11,667 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:11,668 INFO L82 PathProgramCache]: Analyzing trace with hash -930835061, now seen corresponding path program 97 times [2018-07-25 13:30:11,668 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 229360 backedges. 0 proven. 227480 refuted. 0 times theorem prover too weak. 1880 trivial. 0 not checked. [2018-07-25 13:30:13,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:13,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 13:30:13,770 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 13:30:13,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 13:30:13,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:30:13,771 INFO L87 Difference]: Start difference. First operand 1133 states and 1227 transitions. Second operand 97 states. [2018-07-25 13:30:16,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:16,098 INFO L93 Difference]: Finished difference Result 1157 states and 1253 transitions. [2018-07-25 13:30:16,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 13:30:16,098 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 1132 [2018-07-25 13:30:16,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:16,100 INFO L225 Difference]: With dead ends: 1157 [2018-07-25 13:30:16,100 INFO L226 Difference]: Without dead ends: 1155 [2018-07-25 13:30:16,100 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 13:30:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2018-07-25 13:30:17,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1145. [2018-07-25 13:30:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2018-07-25 13:30:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1240 transitions. [2018-07-25 13:30:17,324 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1240 transitions. Word has length 1132 [2018-07-25 13:30:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:17,325 INFO L472 AbstractCegarLoop]: Abstraction has 1145 states and 1240 transitions. [2018-07-25 13:30:17,325 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 13:30:17,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1240 transitions. [2018-07-25 13:30:17,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2018-07-25 13:30:17,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:17,333 INFO L354 BasicCegarLoop]: trace histogram [475, 380, 96, 95, 95, 1, 1, 1] [2018-07-25 13:30:17,333 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:17,334 INFO L82 PathProgramCache]: Analyzing trace with hash -956169015, now seen corresponding path program 98 times [2018-07-25 13:30:17,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 234270 backedges. 0 proven. 232370 refuted. 0 times theorem prover too weak. 1900 trivial. 0 not checked. [2018-07-25 13:30:19,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:19,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 13:30:19,451 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 13:30:19,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 13:30:19,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=9313, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:30:19,451 INFO L87 Difference]: Start difference. First operand 1145 states and 1240 transitions. Second operand 98 states. [2018-07-25 13:30:21,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:21,810 INFO L93 Difference]: Finished difference Result 1169 states and 1266 transitions. [2018-07-25 13:30:21,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 13:30:21,810 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 1144 [2018-07-25 13:30:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:21,812 INFO L225 Difference]: With dead ends: 1169 [2018-07-25 13:30:21,812 INFO L226 Difference]: Without dead ends: 1167 [2018-07-25 13:30:21,813 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=9313, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 13:30:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2018-07-25 13:30:23,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1157. [2018-07-25 13:30:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-07-25 13:30:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1253 transitions. [2018-07-25 13:30:23,069 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1253 transitions. Word has length 1144 [2018-07-25 13:30:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:23,069 INFO L472 AbstractCegarLoop]: Abstraction has 1157 states and 1253 transitions. [2018-07-25 13:30:23,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 13:30:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1253 transitions. [2018-07-25 13:30:23,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1157 [2018-07-25 13:30:23,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:23,079 INFO L354 BasicCegarLoop]: trace histogram [480, 384, 97, 96, 96, 1, 1, 1] [2018-07-25 13:30:23,079 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:23,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2054387961, now seen corresponding path program 99 times [2018-07-25 13:30:23,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 239232 backedges. 0 proven. 237312 refuted. 0 times theorem prover too weak. 1920 trivial. 0 not checked. [2018-07-25 13:30:25,260 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:25,260 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 13:30:25,261 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 13:30:25,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 13:30:25,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:30:25,262 INFO L87 Difference]: Start difference. First operand 1157 states and 1253 transitions. Second operand 99 states. [2018-07-25 13:30:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:27,854 INFO L93 Difference]: Finished difference Result 1181 states and 1279 transitions. [2018-07-25 13:30:27,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 13:30:27,855 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 1156 [2018-07-25 13:30:27,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:27,857 INFO L225 Difference]: With dead ends: 1181 [2018-07-25 13:30:27,857 INFO L226 Difference]: Without dead ends: 1179 [2018-07-25 13:30:27,858 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 13:30:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2018-07-25 13:30:29,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1169. [2018-07-25 13:30:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2018-07-25 13:30:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1266 transitions. [2018-07-25 13:30:29,126 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1266 transitions. Word has length 1156 [2018-07-25 13:30:29,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:29,127 INFO L472 AbstractCegarLoop]: Abstraction has 1169 states and 1266 transitions. [2018-07-25 13:30:29,127 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 13:30:29,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1266 transitions. [2018-07-25 13:30:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1169 [2018-07-25 13:30:29,134 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:29,135 INFO L354 BasicCegarLoop]: trace histogram [485, 388, 98, 97, 97, 1, 1, 1] [2018-07-25 13:30:29,135 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:29,135 INFO L82 PathProgramCache]: Analyzing trace with hash 304061509, now seen corresponding path program 100 times [2018-07-25 13:30:29,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 244246 backedges. 0 proven. 242306 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2018-07-25 13:30:31,398 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:31,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 13:30:31,399 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 13:30:31,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 13:30:31,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=9703, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:30:31,399 INFO L87 Difference]: Start difference. First operand 1169 states and 1266 transitions. Second operand 100 states. [2018-07-25 13:30:34,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:34,103 INFO L93 Difference]: Finished difference Result 1193 states and 1292 transitions. [2018-07-25 13:30:34,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 13:30:34,103 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 1168 [2018-07-25 13:30:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:34,106 INFO L225 Difference]: With dead ends: 1193 [2018-07-25 13:30:34,106 INFO L226 Difference]: Without dead ends: 1191 [2018-07-25 13:30:34,107 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=9703, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 13:30:34,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2018-07-25 13:30:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1181. [2018-07-25 13:30:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2018-07-25 13:30:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1279 transitions. [2018-07-25 13:30:35,441 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1279 transitions. Word has length 1168 [2018-07-25 13:30:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:35,441 INFO L472 AbstractCegarLoop]: Abstraction has 1181 states and 1279 transitions. [2018-07-25 13:30:35,441 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 13:30:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1279 transitions. [2018-07-25 13:30:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1181 [2018-07-25 13:30:35,448 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:35,449 INFO L354 BasicCegarLoop]: trace histogram [490, 392, 99, 98, 98, 1, 1, 1] [2018-07-25 13:30:35,449 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:35,449 INFO L82 PathProgramCache]: Analyzing trace with hash -579419005, now seen corresponding path program 101 times [2018-07-25 13:30:35,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 249312 backedges. 0 proven. 247352 refuted. 0 times theorem prover too weak. 1960 trivial. 0 not checked. [2018-07-25 13:30:37,730 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:37,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 13:30:37,731 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 13:30:37,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 13:30:37,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:30:37,732 INFO L87 Difference]: Start difference. First operand 1181 states and 1279 transitions. Second operand 101 states. [2018-07-25 13:30:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:40,364 INFO L93 Difference]: Finished difference Result 1205 states and 1305 transitions. [2018-07-25 13:30:40,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 13:30:40,364 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 1180 [2018-07-25 13:30:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:40,366 INFO L225 Difference]: With dead ends: 1205 [2018-07-25 13:30:40,366 INFO L226 Difference]: Without dead ends: 1203 [2018-07-25 13:30:40,367 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 13:30:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2018-07-25 13:30:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1193. [2018-07-25 13:30:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2018-07-25 13:30:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1292 transitions. [2018-07-25 13:30:41,696 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1292 transitions. Word has length 1180 [2018-07-25 13:30:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:41,696 INFO L472 AbstractCegarLoop]: Abstraction has 1193 states and 1292 transitions. [2018-07-25 13:30:41,696 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 13:30:41,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1292 transitions. [2018-07-25 13:30:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2018-07-25 13:30:41,704 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:41,704 INFO L354 BasicCegarLoop]: trace histogram [495, 396, 100, 99, 99, 1, 1, 1] [2018-07-25 13:30:41,704 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:41,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1693614143, now seen corresponding path program 102 times [2018-07-25 13:30:41,704 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 254430 backedges. 0 proven. 252450 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-07-25 13:30:43,991 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:43,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 13:30:43,992 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 13:30:43,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 13:30:43,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=10101, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:30:43,993 INFO L87 Difference]: Start difference. First operand 1193 states and 1292 transitions. Second operand 102 states. [2018-07-25 13:30:46,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:46,844 INFO L93 Difference]: Finished difference Result 1217 states and 1318 transitions. [2018-07-25 13:30:46,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 13:30:46,844 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 1192 [2018-07-25 13:30:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:46,846 INFO L225 Difference]: With dead ends: 1217 [2018-07-25 13:30:46,846 INFO L226 Difference]: Without dead ends: 1215 [2018-07-25 13:30:46,846 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=10101, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 13:30:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2018-07-25 13:30:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1205. [2018-07-25 13:30:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1205 states. [2018-07-25 13:30:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1305 transitions. [2018-07-25 13:30:48,222 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1305 transitions. Word has length 1192 [2018-07-25 13:30:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:48,222 INFO L472 AbstractCegarLoop]: Abstraction has 1205 states and 1305 transitions. [2018-07-25 13:30:48,222 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 13:30:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1305 transitions. [2018-07-25 13:30:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1205 [2018-07-25 13:30:48,230 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:48,230 INFO L354 BasicCegarLoop]: trace histogram [500, 400, 101, 100, 100, 1, 1, 1] [2018-07-25 13:30:48,230 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:48,230 INFO L82 PathProgramCache]: Analyzing trace with hash 555699711, now seen corresponding path program 103 times [2018-07-25 13:30:48,230 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 259600 backedges. 0 proven. 257600 refuted. 0 times theorem prover too weak. 2000 trivial. 0 not checked. [2018-07-25 13:30:50,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:50,560 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 13:30:50,560 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 13:30:50,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 13:30:50,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:30:50,561 INFO L87 Difference]: Start difference. First operand 1205 states and 1305 transitions. Second operand 103 states. [2018-07-25 13:30:53,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:30:53,272 INFO L93 Difference]: Finished difference Result 1229 states and 1331 transitions. [2018-07-25 13:30:53,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 13:30:53,272 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 1204 [2018-07-25 13:30:53,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:30:53,274 INFO L225 Difference]: With dead ends: 1229 [2018-07-25 13:30:53,274 INFO L226 Difference]: Without dead ends: 1227 [2018-07-25 13:30:53,275 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 13:30:53,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2018-07-25 13:30:54,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1217. [2018-07-25 13:30:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2018-07-25 13:30:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1318 transitions. [2018-07-25 13:30:54,658 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1318 transitions. Word has length 1204 [2018-07-25 13:30:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:30:54,658 INFO L472 AbstractCegarLoop]: Abstraction has 1217 states and 1318 transitions. [2018-07-25 13:30:54,658 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 13:30:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1318 transitions. [2018-07-25 13:30:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2018-07-25 13:30:54,666 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:30:54,666 INFO L354 BasicCegarLoop]: trace histogram [505, 404, 102, 101, 101, 1, 1, 1] [2018-07-25 13:30:54,666 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:30:54,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1218948925, now seen corresponding path program 104 times [2018-07-25 13:30:54,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:30:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:30:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 264822 backedges. 0 proven. 262802 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2018-07-25 13:30:57,054 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:30:57,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 13:30:57,055 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 13:30:57,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 13:30:57,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=10507, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:30:57,055 INFO L87 Difference]: Start difference. First operand 1217 states and 1318 transitions. Second operand 104 states. [2018-07-25 13:31:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:00,027 INFO L93 Difference]: Finished difference Result 1241 states and 1344 transitions. [2018-07-25 13:31:00,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 13:31:00,027 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 1216 [2018-07-25 13:31:00,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:00,029 INFO L225 Difference]: With dead ends: 1241 [2018-07-25 13:31:00,029 INFO L226 Difference]: Without dead ends: 1239 [2018-07-25 13:31:00,030 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=10507, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 13:31:00,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2018-07-25 13:31:01,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1229. [2018-07-25 13:31:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2018-07-25 13:31:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1331 transitions. [2018-07-25 13:31:01,485 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1331 transitions. Word has length 1216 [2018-07-25 13:31:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:01,486 INFO L472 AbstractCegarLoop]: Abstraction has 1229 states and 1331 transitions. [2018-07-25 13:31:01,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 13:31:01,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1331 transitions. [2018-07-25 13:31:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2018-07-25 13:31:01,494 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:01,494 INFO L354 BasicCegarLoop]: trace histogram [510, 408, 103, 102, 102, 1, 1, 1] [2018-07-25 13:31:01,494 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:01,494 INFO L82 PathProgramCache]: Analyzing trace with hash -849206405, now seen corresponding path program 105 times [2018-07-25 13:31:01,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 270096 backedges. 0 proven. 268056 refuted. 0 times theorem prover too weak. 2040 trivial. 0 not checked. [2018-07-25 13:31:03,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:03,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 13:31:03,988 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 13:31:03,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 13:31:03,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:31:03,989 INFO L87 Difference]: Start difference. First operand 1229 states and 1331 transitions. Second operand 105 states. [2018-07-25 13:31:06,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:31:06,865 INFO L93 Difference]: Finished difference Result 1253 states and 1357 transitions. [2018-07-25 13:31:06,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 13:31:06,866 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 1228 [2018-07-25 13:31:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:31:06,867 INFO L225 Difference]: With dead ends: 1253 [2018-07-25 13:31:06,867 INFO L226 Difference]: Without dead ends: 1251 [2018-07-25 13:31:06,868 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 13:31:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2018-07-25 13:31:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1241. [2018-07-25 13:31:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2018-07-25 13:31:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1344 transitions. [2018-07-25 13:31:08,358 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1344 transitions. Word has length 1228 [2018-07-25 13:31:08,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:31:08,358 INFO L472 AbstractCegarLoop]: Abstraction has 1241 states and 1344 transitions. [2018-07-25 13:31:08,359 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 13:31:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1344 transitions. [2018-07-25 13:31:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2018-07-25 13:31:08,367 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:31:08,367 INFO L354 BasicCegarLoop]: trace histogram [515, 412, 104, 103, 103, 1, 1, 1] [2018-07-25 13:31:08,367 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:31:08,367 INFO L82 PathProgramCache]: Analyzing trace with hash 768223929, now seen corresponding path program 106 times [2018-07-25 13:31:08,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:31:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:31:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 275422 backedges. 0 proven. 273362 refuted. 0 times theorem prover too weak. 2060 trivial. 0 not checked. [2018-07-25 13:31:10,874 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:31:10,874 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 13:31:10,875 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 13:31:10,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 13:31:10,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=10921, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 13:31:10,875 INFO L87 Difference]: Start difference. First operand 1241 states and 1344 transitions. Second operand 106 states. Received shutdown request... [2018-07-25 13:31:12,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 13:31:12,041 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:31:12,047 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:31:12,048 INFO L202 PluginConnector]: Adding new model nested1.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:31:12 BoogieIcfgContainer [2018-07-25 13:31:12,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:31:12,049 INFO L168 Benchmark]: Toolchain (without parser) took 258607.89 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 1.8 GB in the end (delta: -329.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-25 13:31:12,050 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 13:31:12,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.98 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 13:31:12,051 INFO L168 Benchmark]: Boogie Preprocessor took 20.99 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 13:31:12,052 INFO L168 Benchmark]: RCFGBuilder took 278.28 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 13:31:12,053 INFO L168 Benchmark]: TraceAbstraction took 258265.36 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -340.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-25 13:31:12,056 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 0.19 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 38.98 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 20.99 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 278.28 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 258265.36 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -340.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (1241states) and interpolant automaton (currently 62 states, 106 states before enhancement), while ReachableStatesComputation was computing reachable states (718 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 258.1s OverallTime, 108 OverallIterations, 515 TraceHistogramMax, 106.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 16592 SDtfs, 313 SDslu, 1116574 SDs, 0 SdLazy, 762376 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5582 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1241occurred in iteration=107, 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: 51.2s AutomataMinimizationTime, 107 MinimizatonAttempts, 1016 StatesRemovedByMinimization, 103 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 29.4s InterpolantComputationTime, 64752 NumberOfCodeBlocks, 64752 NumberOfCodeBlocksAsserted, 108 NumberOfCheckSat, 64644 ConstructedInterpolants, 0 QuantifiedInterpolants, 374841052 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 108 InterpolantComputations, 2 PerfectInterpolantSequences, 107256/9587378 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/nested1.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-31-12-070.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested1.i_4.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-31-12-070.csv Completed graceful shutdown