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/functions1.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:45:43,183 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:45:43,185 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:45:43,200 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:45:43,201 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:45:43,202 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:45:43,203 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:45:43,205 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:45:43,209 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:45:43,210 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:45:43,219 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:45:43,219 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:45:43,220 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:45:43,221 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:45:43,222 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:45:43,223 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:45:43,227 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:45:43,229 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:45:43,233 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:45:43,237 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:45:43,238 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:45:43,241 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:45:43,245 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:45:43,245 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:45:43,245 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:45:43,247 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:45:43,248 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:45:43,249 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:45:43,250 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:45:43,251 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:45:43,251 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:45:43,252 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 08:45:43,252 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 08:45:43,252 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 08:45:43,253 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 08:45:43,254 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 08:45:43,254 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:45:43,272 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:45:43,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:45:43,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:45:43,274 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:45:43,274 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:45:43,274 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:45:43,275 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:45:43,275 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:45:43,323 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:45:43,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:45:43,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:45:43,344 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:45:43,345 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:45:43,347 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/functions1.i_3.bpl [2018-07-25 08:45:43,347 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/functions1.i_3.bpl' [2018-07-25 08:45:43,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:45:43,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:45:43,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:45:43,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:45:43,415 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:45:43,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/1) ... [2018-07-25 08:45:43,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/1) ... [2018-07-25 08:45:43,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:45:43,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:45:43,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:45:43,459 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:45:43,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/1) ... [2018-07-25 08:45:43,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/1) ... [2018-07-25 08:45:43,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/1) ... [2018-07-25 08:45:43,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/1) ... [2018-07-25 08:45:43,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/1) ... [2018-07-25 08:45:43,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/1) ... [2018-07-25 08:45:43,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/1) ... [2018-07-25 08:45:43,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:45:43,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:45:43,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:45:43,489 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:45:43,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/1) ... [2018-07-25 08:45:43,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:45:43,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:45:43,768 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:45:43,769 INFO L202 PluginConnector]: Adding new model functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:45:43 BoogieIcfgContainer [2018-07-25 08:45:43,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:45:43,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:45:43,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:45:43,774 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:45:43,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:45:43" (1/2) ... [2018-07-25 08:45:43,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4032e5d5 and model type functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:45:43, skipping insertion in model container [2018-07-25 08:45:43,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:45:43" (2/2) ... [2018-07-25 08:45:43,778 INFO L112 eAbstractionObserver]: Analyzing ICFG functions1.i_3.bpl [2018-07-25 08:45:43,788 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:45:43,796 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:45:43,842 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:45:43,843 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:45:43,843 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:45:43,843 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:45:43,844 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:45:43,844 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:45:43,844 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:45:43,844 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:45:43,845 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:45:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:45:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:45:43,868 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:43,869 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:45:43,870 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:43,875 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 08:45:43,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:43,980 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:45:43,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:45:43,985 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:45:43,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:45:43,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:45:44,000 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:45:44,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,036 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 08:45:44,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:45:44,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 08:45:44,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,050 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:45:44,050 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:45:44,054 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:45:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:45:44,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:45:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:45:44,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:45:44,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:45:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,092 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:45:44,092 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:45:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:45:44,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:45:44,093 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,095 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:45:44,096 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,096 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-25 08:45:44,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:45:44,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:45:44,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:45:44,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:45:44,157 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-25 08:45:44,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,199 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:45:44,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:45:44,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:45:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,201 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:45:44,201 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:45:44,203 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 08:45:44,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:45:44,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:45:44,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:45:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:45:44,210 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:45:44,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,210 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:45:44,210 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:45:44,210 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:45:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:45:44,211 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,211 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:45:44,211 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,212 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-25 08:45:44,212 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,314 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:45:44,318 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:45:44,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:45:44,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:45:44,319 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-07-25 08:45:44,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,367 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 08:45:44,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:45:44,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:45:44,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,372 INFO L225 Difference]: With dead ends: 13 [2018-07-25 08:45:44,372 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 08:45:44,373 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 08:45:44,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 08:45:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 08:45:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 08:45:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 08:45:44,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 08:45:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,381 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 08:45:44,381 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:45:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 08:45:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:45:44,382 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,382 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 08:45:44,384 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-07-25 08:45:44,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:45:44,462 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:45:44,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:45:44,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:45:44,463 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-07-25 08:45:44,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,518 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 08:45:44,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:45:44,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-07-25 08:45:44,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,523 INFO L225 Difference]: With dead ends: 15 [2018-07-25 08:45:44,523 INFO L226 Difference]: Without dead ends: 13 [2018-07-25 08:45:44,524 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 08:45:44,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-07-25 08:45:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-07-25 08:45:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 08:45:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 08:45:44,533 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 08:45:44,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,534 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 08:45:44,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:45:44,534 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 08:45:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:45:44,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,535 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 08:45:44,535 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-07-25 08:45:44,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,649 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:45:44,652 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:45:44,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:45:44,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:45:44,654 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-07-25 08:45:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,706 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 08:45:44,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 08:45:44,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-07-25 08:45:44,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,708 INFO L225 Difference]: With dead ends: 17 [2018-07-25 08:45:44,708 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 08:45:44,709 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 08:45:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 08:45:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 08:45:44,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 08:45:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 08:45:44,715 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 08:45:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,716 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 08:45:44,716 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:45:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 08:45:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:45:44,718 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,719 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 08:45:44,719 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,722 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-07-25 08:45:44,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,797 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,797 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:45:44,798 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:45:44,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:45:44,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:45:44,799 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-07-25 08:45:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:44,852 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-07-25 08:45:44,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 08:45:44,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:45:44,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:44,855 INFO L225 Difference]: With dead ends: 19 [2018-07-25 08:45:44,856 INFO L226 Difference]: Without dead ends: 17 [2018-07-25 08:45:44,857 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 08:45:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-07-25 08:45:44,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-07-25 08:45:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-25 08:45:44,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-07-25 08:45:44,867 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-07-25 08:45:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:44,868 INFO L472 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-07-25 08:45:44,868 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:45:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-07-25 08:45:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:45:44,869 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:44,869 INFO L354 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-07-25 08:45:44,870 INFO L415 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:44,870 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-07-25 08:45:44,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:44,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:44,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:45:44,968 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:45:44,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:45:44,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:45:44,971 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-07-25 08:45:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:45,036 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-07-25 08:45:45,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:45:45,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:45:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:45,040 INFO L225 Difference]: With dead ends: 21 [2018-07-25 08:45:45,040 INFO L226 Difference]: Without dead ends: 19 [2018-07-25 08:45:45,041 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 08:45:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-25 08:45:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-07-25 08:45:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-07-25 08:45:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-07-25 08:45:45,051 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-07-25 08:45:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:45,052 INFO L472 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-07-25 08:45:45,052 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:45:45,052 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-07-25 08:45:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:45:45,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:45,054 INFO L354 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-07-25 08:45:45,054 INFO L415 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:45,055 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-07-25 08:45:45,055 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:45,130 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:45,131 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:45:45,131 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:45:45,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:45:45,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:45:45,132 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-07-25 08:45:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:45,202 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-07-25 08:45:45,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:45:45,203 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-07-25 08:45:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:45,204 INFO L225 Difference]: With dead ends: 23 [2018-07-25 08:45:45,204 INFO L226 Difference]: Without dead ends: 21 [2018-07-25 08:45:45,207 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 08:45:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-07-25 08:45:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-07-25 08:45:45,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-07-25 08:45:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-07-25 08:45:45,218 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-07-25 08:45:45,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:45,219 INFO L472 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-07-25 08:45:45,219 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:45:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-07-25 08:45:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:45:45,220 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:45,221 INFO L354 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-07-25 08:45:45,221 INFO L415 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:45,221 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-07-25 08:45:45,222 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:45,301 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:45,301 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:45:45,301 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:45:45,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:45:45,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:45:45,303 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-07-25 08:45:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:45,365 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-07-25 08:45:45,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:45:45,366 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 08:45:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:45,367 INFO L225 Difference]: With dead ends: 25 [2018-07-25 08:45:45,367 INFO L226 Difference]: Without dead ends: 23 [2018-07-25 08:45:45,368 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 08:45:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-25 08:45:45,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-07-25 08:45:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-07-25 08:45:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-07-25 08:45:45,374 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-07-25 08:45:45,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:45,375 INFO L472 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-07-25 08:45:45,375 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:45:45,375 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-07-25 08:45:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:45:45,376 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:45,376 INFO L354 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-07-25 08:45:45,376 INFO L415 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:45,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-07-25 08:45:45,377 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:45,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:45,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:45:45,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:45:45,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:45:45,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:45:45,453 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-07-25 08:45:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:45,513 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-07-25 08:45:45,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:45:45,514 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-07-25 08:45:45,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:45,515 INFO L225 Difference]: With dead ends: 27 [2018-07-25 08:45:45,515 INFO L226 Difference]: Without dead ends: 25 [2018-07-25 08:45:45,516 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 08:45:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-07-25 08:45:45,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-07-25 08:45:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-07-25 08:45:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-07-25 08:45:45,523 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-07-25 08:45:45,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:45,523 INFO L472 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-07-25 08:45:45,523 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:45:45,523 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-07-25 08:45:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:45:45,526 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:45,526 INFO L354 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-07-25 08:45:45,526 INFO L415 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:45,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-07-25 08:45:45,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:45,627 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:45,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-07-25 08:45:45,627 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:45:45,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:45:45,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:45:45,629 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-07-25 08:45:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:45,694 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-07-25 08:45:45,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:45:45,695 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-07-25 08:45:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:45,698 INFO L225 Difference]: With dead ends: 29 [2018-07-25 08:45:45,699 INFO L226 Difference]: Without dead ends: 27 [2018-07-25 08:45:45,699 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 08:45:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-07-25 08:45:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-07-25 08:45:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-07-25 08:45:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-07-25 08:45:45,708 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-07-25 08:45:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:45,708 INFO L472 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-07-25 08:45:45,708 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:45:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-07-25 08:45:45,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:45:45,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:45,711 INFO L354 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-07-25 08:45:45,712 INFO L415 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:45,712 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-07-25 08:45:45,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:45,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:45,805 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-07-25 08:45:45,805 INFO L451 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-25 08:45:45,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-25 08:45:45,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:45:45,808 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-07-25 08:45:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:45,879 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-07-25 08:45:45,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:45:45,879 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-07-25 08:45:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:45,880 INFO L225 Difference]: With dead ends: 31 [2018-07-25 08:45:45,880 INFO L226 Difference]: Without dead ends: 29 [2018-07-25 08:45:45,881 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 08:45:45,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-07-25 08:45:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-07-25 08:45:45,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-07-25 08:45:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-07-25 08:45:45,892 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-07-25 08:45:45,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:45,893 INFO L472 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-07-25 08:45:45,893 INFO L473 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-25 08:45:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-07-25 08:45:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-25 08:45:45,895 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:45,895 INFO L354 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-07-25 08:45:45,896 INFO L415 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-07-25 08:45:45,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:46,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:46,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-07-25 08:45:46,015 INFO L451 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-25 08:45:46,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-25 08:45:46,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-07-25 08:45:46,020 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-07-25 08:45:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:46,118 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-07-25 08:45:46,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:45:46,119 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-07-25 08:45:46,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:46,120 INFO L225 Difference]: With dead ends: 33 [2018-07-25 08:45:46,120 INFO L226 Difference]: Without dead ends: 31 [2018-07-25 08:45:46,121 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 08:45:46,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-25 08:45:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-25 08:45:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-25 08:45:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-07-25 08:45:46,130 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-07-25 08:45:46,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:46,130 INFO L472 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-07-25 08:45:46,130 INFO L473 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-25 08:45:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-07-25 08:45:46,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-07-25 08:45:46,134 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:46,134 INFO L354 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-07-25 08:45:46,135 INFO L415 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:46,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-07-25 08:45:46,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:46,257 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:46,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-07-25 08:45:46,258 INFO L451 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-25 08:45:46,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-25 08:45:46,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:45:46,263 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-07-25 08:45:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:46,357 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-07-25 08:45:46,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:45:46,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-07-25 08:45:46,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:46,358 INFO L225 Difference]: With dead ends: 35 [2018-07-25 08:45:46,358 INFO L226 Difference]: Without dead ends: 33 [2018-07-25 08:45:46,359 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 08:45:46,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-07-25 08:45:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-07-25 08:45:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-25 08:45:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-25 08:45:46,371 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-07-25 08:45:46,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:46,371 INFO L472 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-25 08:45:46,371 INFO L473 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-25 08:45:46,371 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-25 08:45:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-25 08:45:46,372 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:46,374 INFO L354 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-07-25 08:45:46,374 INFO L415 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:46,374 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-07-25 08:45:46,375 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:46,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:46,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-07-25 08:45:46,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-25 08:45:46,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-25 08:45:46,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-07-25 08:45:46,515 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-07-25 08:45:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:46,618 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-07-25 08:45:46,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:45:46,619 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-07-25 08:45:46,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:46,620 INFO L225 Difference]: With dead ends: 37 [2018-07-25 08:45:46,620 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 08:45:46,621 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 08:45:46,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 08:45:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-07-25 08:45:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-25 08:45:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-07-25 08:45:46,629 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-07-25 08:45:46,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:46,629 INFO L472 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-07-25 08:45:46,629 INFO L473 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-25 08:45:46,630 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-07-25 08:45:46,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-25 08:45:46,631 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:46,631 INFO L354 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-07-25 08:45:46,631 INFO L415 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:46,633 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-07-25 08:45:46,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:46,782 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:46,782 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-07-25 08:45:46,783 INFO L451 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-25 08:45:46,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-25 08:45:46,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:45:46,787 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-07-25 08:45:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:46,914 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-07-25 08:45:46,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:45:46,915 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-07-25 08:45:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:46,916 INFO L225 Difference]: With dead ends: 39 [2018-07-25 08:45:46,916 INFO L226 Difference]: Without dead ends: 37 [2018-07-25 08:45:46,917 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 08:45:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-07-25 08:45:46,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-07-25 08:45:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-07-25 08:45:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-07-25 08:45:46,926 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-07-25 08:45:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:46,927 INFO L472 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-07-25 08:45:46,927 INFO L473 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-25 08:45:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-07-25 08:45:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-25 08:45:46,928 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:46,928 INFO L354 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-07-25 08:45:46,928 INFO L415 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:46,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-07-25 08:45:46,929 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:47,072 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:47,072 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-07-25 08:45:47,072 INFO L451 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-25 08:45:47,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-25 08:45:47,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:45:47,073 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-07-25 08:45:47,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:47,193 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-07-25 08:45:47,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:45:47,193 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-07-25 08:45:47,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:47,194 INFO L225 Difference]: With dead ends: 41 [2018-07-25 08:45:47,194 INFO L226 Difference]: Without dead ends: 39 [2018-07-25 08:45:47,195 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 08:45:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-25 08:45:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-07-25 08:45:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 08:45:47,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-07-25 08:45:47,208 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-07-25 08:45:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:47,208 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-07-25 08:45:47,208 INFO L473 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-07-25 08:45:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-07-25 08:45:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-25 08:45:47,212 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:47,212 INFO L354 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-07-25 08:45:47,212 INFO L415 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:47,213 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-07-25 08:45:47,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:47,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:47,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-07-25 08:45:47,376 INFO L451 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-25 08:45:47,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-25 08:45:47,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-07-25 08:45:47,377 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-07-25 08:45:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:47,511 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-07-25 08:45:47,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:45:47,512 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-07-25 08:45:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:47,512 INFO L225 Difference]: With dead ends: 43 [2018-07-25 08:45:47,513 INFO L226 Difference]: Without dead ends: 41 [2018-07-25 08:45:47,513 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 08:45:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-07-25 08:45:47,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-07-25 08:45:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-07-25 08:45:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-07-25 08:45:47,525 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-07-25 08:45:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:47,525 INFO L472 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-07-25 08:45:47,526 INFO L473 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-25 08:45:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-07-25 08:45:47,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-25 08:45:47,530 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:47,530 INFO L354 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-07-25 08:45:47,531 INFO L415 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:47,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-07-25 08:45:47,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:47,687 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:47,688 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-07-25 08:45:47,688 INFO L451 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-25 08:45:47,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-25 08:45:47,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-07-25 08:45:47,689 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-07-25 08:45:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:47,821 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-07-25 08:45:47,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:45:47,822 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-07-25 08:45:47,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:47,822 INFO L225 Difference]: With dead ends: 45 [2018-07-25 08:45:47,822 INFO L226 Difference]: Without dead ends: 43 [2018-07-25 08:45:47,823 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 08:45:47,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-07-25 08:45:47,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-07-25 08:45:47,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-07-25 08:45:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-07-25 08:45:47,830 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-07-25 08:45:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:47,830 INFO L472 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-07-25 08:45:47,830 INFO L473 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-07-25 08:45:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-07-25 08:45:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-07-25 08:45:47,831 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:47,831 INFO L354 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-07-25 08:45:47,832 INFO L415 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:47,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-07-25 08:45:47,832 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:48,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:48,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-07-25 08:45:48,032 INFO L451 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-25 08:45:48,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-25 08:45:48,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:45:48,033 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-07-25 08:45:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:48,175 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-07-25 08:45:48,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:45:48,175 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-07-25 08:45:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:48,176 INFO L225 Difference]: With dead ends: 47 [2018-07-25 08:45:48,176 INFO L226 Difference]: Without dead ends: 45 [2018-07-25 08:45:48,177 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 08:45:48,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-07-25 08:45:48,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-07-25 08:45:48,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-07-25 08:45:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-07-25 08:45:48,182 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-07-25 08:45:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:48,183 INFO L472 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-07-25 08:45:48,183 INFO L473 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-07-25 08:45:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-07-25 08:45:48,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-07-25 08:45:48,184 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:48,184 INFO L354 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-07-25 08:45:48,184 INFO L415 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:48,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-07-25 08:45:48,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:48,339 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:48,340 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-07-25 08:45:48,340 INFO L451 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-07-25 08:45:48,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-07-25 08:45:48,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:45:48,341 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-07-25 08:45:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:48,497 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-07-25 08:45:48,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:45:48,497 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-07-25 08:45:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:48,498 INFO L225 Difference]: With dead ends: 49 [2018-07-25 08:45:48,498 INFO L226 Difference]: Without dead ends: 47 [2018-07-25 08:45:48,499 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 08:45:48,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-07-25 08:45:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-07-25 08:45:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 08:45:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-07-25 08:45:48,510 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-07-25 08:45:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:48,510 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-07-25 08:45:48,511 INFO L473 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-07-25 08:45:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-07-25 08:45:48,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-07-25 08:45:48,511 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:48,511 INFO L354 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-07-25 08:45:48,512 INFO L415 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:48,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-07-25 08:45:48,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:48,690 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:48,691 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-07-25 08:45:48,691 INFO L451 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-25 08:45:48,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-25 08:45:48,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:45:48,693 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-07-25 08:45:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:48,858 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-07-25 08:45:48,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:45:48,859 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-07-25 08:45:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:48,859 INFO L225 Difference]: With dead ends: 51 [2018-07-25 08:45:48,859 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 08:45:48,860 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:45:48,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 08:45:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-07-25 08:45:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-07-25 08:45:48,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-07-25 08:45:48,873 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-07-25 08:45:48,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:48,873 INFO L472 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-07-25 08:45:48,873 INFO L473 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-25 08:45:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-07-25 08:45:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-25 08:45:48,874 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:48,875 INFO L354 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-07-25 08:45:48,875 INFO L415 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:48,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-07-25 08:45:48,876 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:49,074 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:49,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-07-25 08:45:49,074 INFO L451 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-07-25 08:45:49,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-07-25 08:45:49,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:45:49,075 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-07-25 08:45:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:49,232 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-07-25 08:45:49,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:45:49,232 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-07-25 08:45:49,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:49,233 INFO L225 Difference]: With dead ends: 53 [2018-07-25 08:45:49,233 INFO L226 Difference]: Without dead ends: 51 [2018-07-25 08:45:49,234 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:45:49,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-07-25 08:45:49,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-07-25 08:45:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-07-25 08:45:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-07-25 08:45:49,241 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-07-25 08:45:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:49,241 INFO L472 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-07-25 08:45:49,241 INFO L473 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-07-25 08:45:49,241 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-07-25 08:45:49,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-25 08:45:49,242 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:49,242 INFO L354 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-07-25 08:45:49,242 INFO L415 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:49,242 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-07-25 08:45:49,243 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:49,426 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:49,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-07-25 08:45:49,427 INFO L451 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-25 08:45:49,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-25 08:45:49,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:45:49,428 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-07-25 08:45:49,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:49,593 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-07-25 08:45:49,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:45:49,593 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-07-25 08:45:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:49,594 INFO L225 Difference]: With dead ends: 55 [2018-07-25 08:45:49,594 INFO L226 Difference]: Without dead ends: 53 [2018-07-25 08:45:49,595 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:45:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-07-25 08:45:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-07-25 08:45:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-07-25 08:45:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-07-25 08:45:49,601 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-07-25 08:45:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:49,602 INFO L472 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-07-25 08:45:49,602 INFO L473 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-07-25 08:45:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-07-25 08:45:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-25 08:45:49,602 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:49,603 INFO L354 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-07-25 08:45:49,603 INFO L415 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:49,603 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-07-25 08:45:49,603 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:49,809 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:49,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-07-25 08:45:49,810 INFO L451 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-07-25 08:45:49,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-07-25 08:45:49,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:45:49,811 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-07-25 08:45:49,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:49,996 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-07-25 08:45:49,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:45:49,996 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-07-25 08:45:49,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:49,997 INFO L225 Difference]: With dead ends: 57 [2018-07-25 08:45:49,997 INFO L226 Difference]: Without dead ends: 55 [2018-07-25 08:45:49,999 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 08:45:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-07-25 08:45:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-07-25 08:45:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 08:45:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-07-25 08:45:50,016 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-07-25 08:45:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:50,016 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-07-25 08:45:50,016 INFO L473 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-07-25 08:45:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-07-25 08:45:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-25 08:45:50,017 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:50,017 INFO L354 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-07-25 08:45:50,017 INFO L415 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-07-25 08:45:50,018 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:50,238 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:50,239 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:50,239 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-07-25 08:45:50,239 INFO L451 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-07-25 08:45:50,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-07-25 08:45:50,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:45:50,241 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-07-25 08:45:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:50,425 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-07-25 08:45:50,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:45:50,425 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-07-25 08:45:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:50,426 INFO L225 Difference]: With dead ends: 59 [2018-07-25 08:45:50,426 INFO L226 Difference]: Without dead ends: 57 [2018-07-25 08:45:50,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:45:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-25 08:45:50,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-25 08:45:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:45:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-07-25 08:45:50,435 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-07-25 08:45:50,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:50,435 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-07-25 08:45:50,435 INFO L473 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-07-25 08:45:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-07-25 08:45:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-25 08:45:50,436 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:50,436 INFO L354 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-07-25 08:45:50,436 INFO L415 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-07-25 08:45:50,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:50,675 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:50,675 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-07-25 08:45:50,675 INFO L451 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-25 08:45:50,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-25 08:45:50,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:45:50,677 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-07-25 08:45:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:50,903 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-07-25 08:45:50,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:45:50,904 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-07-25 08:45:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:50,905 INFO L225 Difference]: With dead ends: 61 [2018-07-25 08:45:50,906 INFO L226 Difference]: Without dead ends: 59 [2018-07-25 08:45:50,907 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:45:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-07-25 08:45:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-07-25 08:45:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-07-25 08:45:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-07-25 08:45:50,914 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-07-25 08:45:50,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:50,914 INFO L472 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-07-25 08:45:50,915 INFO L473 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-07-25 08:45:50,915 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-07-25 08:45:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-25 08:45:50,920 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:50,920 INFO L354 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-07-25 08:45:50,920 INFO L415 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:50,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-07-25 08:45:50,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:51,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:51,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-07-25 08:45:51,192 INFO L451 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-07-25 08:45:51,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-07-25 08:45:51,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:45:51,193 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-07-25 08:45:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:51,428 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-07-25 08:45:51,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:45:51,428 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-07-25 08:45:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:51,429 INFO L225 Difference]: With dead ends: 63 [2018-07-25 08:45:51,429 INFO L226 Difference]: Without dead ends: 61 [2018-07-25 08:45:51,430 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:45:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-07-25 08:45:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-07-25 08:45:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-07-25 08:45:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-07-25 08:45:51,436 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-07-25 08:45:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:51,436 INFO L472 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-07-25 08:45:51,436 INFO L473 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-07-25 08:45:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-07-25 08:45:51,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-25 08:45:51,437 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:51,437 INFO L354 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-07-25 08:45:51,437 INFO L415 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:51,437 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-07-25 08:45:51,437 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:51,680 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:51,681 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-07-25 08:45:51,681 INFO L451 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-07-25 08:45:51,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-07-25 08:45:51,682 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:45:51,682 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-07-25 08:45:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:51,907 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-07-25 08:45:51,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:45:51,907 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-07-25 08:45:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:51,908 INFO L225 Difference]: With dead ends: 65 [2018-07-25 08:45:51,908 INFO L226 Difference]: Without dead ends: 63 [2018-07-25 08:45:51,909 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:45:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-07-25 08:45:51,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-07-25 08:45:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-25 08:45:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-07-25 08:45:51,915 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-07-25 08:45:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:51,916 INFO L472 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-07-25 08:45:51,916 INFO L473 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-07-25 08:45:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-07-25 08:45:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-25 08:45:51,917 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:51,917 INFO L354 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-07-25 08:45:51,917 INFO L415 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:51,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-07-25 08:45:51,918 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:52,155 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:52,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-07-25 08:45:52,156 INFO L451 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-07-25 08:45:52,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-07-25 08:45:52,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:45:52,157 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-07-25 08:45:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:52,396 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-07-25 08:45:52,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:45:52,396 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-07-25 08:45:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:52,397 INFO L225 Difference]: With dead ends: 67 [2018-07-25 08:45:52,397 INFO L226 Difference]: Without dead ends: 65 [2018-07-25 08:45:52,398 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:45:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-07-25 08:45:52,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-07-25 08:45:52,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-07-25 08:45:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-07-25 08:45:52,404 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-07-25 08:45:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:52,404 INFO L472 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-07-25 08:45:52,404 INFO L473 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-07-25 08:45:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-07-25 08:45:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-25 08:45:52,405 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:52,405 INFO L354 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-07-25 08:45:52,406 INFO L415 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:52,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-07-25 08:45:52,406 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:52,677 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:52,677 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-07-25 08:45:52,677 INFO L451 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-07-25 08:45:52,678 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-07-25 08:45:52,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:45:52,678 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-07-25 08:45:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:52,921 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-07-25 08:45:52,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:45:52,921 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-07-25 08:45:52,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:52,922 INFO L225 Difference]: With dead ends: 69 [2018-07-25 08:45:52,922 INFO L226 Difference]: Without dead ends: 67 [2018-07-25 08:45:52,923 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:45:52,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-07-25 08:45:52,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-07-25 08:45:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-07-25 08:45:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-07-25 08:45:52,929 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-07-25 08:45:52,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:52,929 INFO L472 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-07-25 08:45:52,929 INFO L473 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-07-25 08:45:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-07-25 08:45:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-25 08:45:52,930 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:52,930 INFO L354 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-07-25 08:45:52,930 INFO L415 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:52,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-07-25 08:45:52,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:53,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:53,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-07-25 08:45:53,198 INFO L451 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-07-25 08:45:53,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-07-25 08:45:53,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:45:53,200 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-07-25 08:45:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:53,458 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-07-25 08:45:53,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:45:53,458 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-07-25 08:45:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:53,459 INFO L225 Difference]: With dead ends: 71 [2018-07-25 08:45:53,459 INFO L226 Difference]: Without dead ends: 69 [2018-07-25 08:45:53,460 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:45:53,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-07-25 08:45:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-07-25 08:45:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-07-25 08:45:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-07-25 08:45:53,466 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-07-25 08:45:53,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:53,466 INFO L472 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-07-25 08:45:53,466 INFO L473 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-07-25 08:45:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-07-25 08:45:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-25 08:45:53,467 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:53,467 INFO L354 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-07-25 08:45:53,468 INFO L415 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:53,468 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-07-25 08:45:53,468 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:53,738 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:53,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-07-25 08:45:53,738 INFO L451 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-07-25 08:45:53,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-07-25 08:45:53,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:45:53,739 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-07-25 08:45:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:54,011 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-07-25 08:45:54,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:45:54,014 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-07-25 08:45:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:54,015 INFO L225 Difference]: With dead ends: 73 [2018-07-25 08:45:54,015 INFO L226 Difference]: Without dead ends: 71 [2018-07-25 08:45:54,019 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:45:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-07-25 08:45:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-07-25 08:45:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-07-25 08:45:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-07-25 08:45:54,029 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-07-25 08:45:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:54,030 INFO L472 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-07-25 08:45:54,030 INFO L473 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-07-25 08:45:54,030 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-07-25 08:45:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-07-25 08:45:54,031 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:54,031 INFO L354 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-07-25 08:45:54,031 INFO L415 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:54,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-07-25 08:45:54,032 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:54,379 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:54,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-07-25 08:45:54,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-07-25 08:45:54,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-07-25 08:45:54,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:45:54,380 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-07-25 08:45:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:54,677 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-07-25 08:45:54,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:45:54,677 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-07-25 08:45:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:54,678 INFO L225 Difference]: With dead ends: 75 [2018-07-25 08:45:54,678 INFO L226 Difference]: Without dead ends: 73 [2018-07-25 08:45:54,679 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-07-25 08:45:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-07-25 08:45:54,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-07-25 08:45:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:45:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-07-25 08:45:54,686 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-07-25 08:45:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:54,687 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-07-25 08:45:54,687 INFO L473 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-07-25 08:45:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-07-25 08:45:54,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-25 08:45:54,688 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:54,688 INFO L354 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-07-25 08:45:54,691 INFO L415 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-07-25 08:45:54,692 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:55,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:55,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-07-25 08:45:55,014 INFO L451 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-07-25 08:45:55,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-07-25 08:45:55,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:45:55,015 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-07-25 08:45:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:55,295 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-07-25 08:45:55,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-07-25 08:45:55,296 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-07-25 08:45:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:55,297 INFO L225 Difference]: With dead ends: 77 [2018-07-25 08:45:55,297 INFO L226 Difference]: Without dead ends: 75 [2018-07-25 08:45:55,298 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 08:45:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-07-25 08:45:55,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-07-25 08:45:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-07-25 08:45:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-07-25 08:45:55,304 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-07-25 08:45:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:55,305 INFO L472 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-07-25 08:45:55,305 INFO L473 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-07-25 08:45:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-07-25 08:45:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-07-25 08:45:55,305 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:55,306 INFO L354 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-07-25 08:45:55,306 INFO L415 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:55,306 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-07-25 08:45:55,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:55,591 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:55,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-07-25 08:45:55,591 INFO L451 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-07-25 08:45:55,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-07-25 08:45:55,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:45:55,592 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-07-25 08:45:55,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:55,876 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-07-25 08:45:55,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:45:55,876 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-07-25 08:45:55,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:55,877 INFO L225 Difference]: With dead ends: 79 [2018-07-25 08:45:55,877 INFO L226 Difference]: Without dead ends: 77 [2018-07-25 08:45:55,878 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-07-25 08:45:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-07-25 08:45:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-07-25 08:45:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-25 08:45:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-07-25 08:45:55,884 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-07-25 08:45:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:55,885 INFO L472 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-07-25 08:45:55,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-07-25 08:45:55,885 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-07-25 08:45:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-07-25 08:45:55,885 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:55,886 INFO L354 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-07-25 08:45:55,886 INFO L415 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:55,886 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-07-25 08:45:55,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:56,197 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:56,197 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-07-25 08:45:56,197 INFO L451 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-07-25 08:45:56,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-07-25 08:45:56,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:45:56,199 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-07-25 08:45:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:56,492 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-07-25 08:45:56,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:45:56,492 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-07-25 08:45:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:56,493 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:45:56,493 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:45:56,494 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:45:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:45:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-07-25 08:45:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-07-25 08:45:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-07-25 08:45:56,500 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-07-25 08:45:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:56,501 INFO L472 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-07-25 08:45:56,501 INFO L473 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-07-25 08:45:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-07-25 08:45:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-07-25 08:45:56,502 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:56,502 INFO L354 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-07-25 08:45:56,502 INFO L415 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:56,502 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-07-25 08:45:56,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:56,799 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:56,800 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-07-25 08:45:56,800 INFO L451 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-07-25 08:45:56,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-07-25 08:45:56,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:45:56,801 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-07-25 08:45:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:57,115 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-07-25 08:45:57,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-25 08:45:57,115 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-07-25 08:45:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:57,116 INFO L225 Difference]: With dead ends: 83 [2018-07-25 08:45:57,116 INFO L226 Difference]: Without dead ends: 81 [2018-07-25 08:45:57,117 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-07-25 08:45:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-07-25 08:45:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-07-25 08:45:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-07-25 08:45:57,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-07-25 08:45:57,124 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-07-25 08:45:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:57,124 INFO L472 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-07-25 08:45:57,124 INFO L473 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-07-25 08:45:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-07-25 08:45:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-07-25 08:45:57,125 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:57,126 INFO L354 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-07-25 08:45:57,126 INFO L415 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:57,126 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-07-25 08:45:57,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:57,427 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:57,427 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-07-25 08:45:57,427 INFO L451 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-07-25 08:45:57,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-07-25 08:45:57,428 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-07-25 08:45:57,428 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-07-25 08:45:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:57,740 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-07-25 08:45:57,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:45:57,740 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-07-25 08:45:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:57,741 INFO L225 Difference]: With dead ends: 85 [2018-07-25 08:45:57,741 INFO L226 Difference]: Without dead ends: 83 [2018-07-25 08:45:57,742 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 08:45:57,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-25 08:45:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-07-25 08:45:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-07-25 08:45:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-07-25 08:45:57,748 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-07-25 08:45:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:57,749 INFO L472 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-07-25 08:45:57,749 INFO L473 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-07-25 08:45:57,749 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-07-25 08:45:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-07-25 08:45:57,750 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:57,750 INFO L354 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-07-25 08:45:57,750 INFO L415 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:57,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-07-25 08:45:57,751 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:58,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:58,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-07-25 08:45:58,113 INFO L451 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-07-25 08:45:58,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-07-25 08:45:58,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:45:58,114 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-07-25 08:45:58,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:58,512 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-07-25 08:45:58,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-07-25 08:45:58,513 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-07-25 08:45:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:58,513 INFO L225 Difference]: With dead ends: 87 [2018-07-25 08:45:58,514 INFO L226 Difference]: Without dead ends: 85 [2018-07-25 08:45:58,515 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-07-25 08:45:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-07-25 08:45:58,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-07-25 08:45:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:45:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-07-25 08:45:58,522 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-07-25 08:45:58,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:58,522 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-07-25 08:45:58,522 INFO L473 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-07-25 08:45:58,523 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-07-25 08:45:58,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-25 08:45:58,523 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:58,524 INFO L354 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-07-25 08:45:58,524 INFO L415 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:58,524 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-07-25 08:45:58,524 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:58,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:58,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-07-25 08:45:58,849 INFO L451 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-07-25 08:45:58,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-07-25 08:45:58,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:45:58,851 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-07-25 08:45:59,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:59,186 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-07-25 08:45:59,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-25 08:45:59,186 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-07-25 08:45:59,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:59,187 INFO L225 Difference]: With dead ends: 89 [2018-07-25 08:45:59,187 INFO L226 Difference]: Without dead ends: 87 [2018-07-25 08:45:59,189 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:45:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-07-25 08:45:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-07-25 08:45:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-07-25 08:45:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-07-25 08:45:59,198 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-07-25 08:45:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:59,198 INFO L472 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-07-25 08:45:59,198 INFO L473 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-07-25 08:45:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-07-25 08:45:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-07-25 08:45:59,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:59,199 INFO L354 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-07-25 08:45:59,200 INFO L415 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-07-25 08:45:59,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:45:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:45:59,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:45:59,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-07-25 08:45:59,512 INFO L451 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-07-25 08:45:59,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-07-25 08:45:59,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:45:59,514 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-07-25 08:45:59,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:45:59,866 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-07-25 08:45:59,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:45:59,867 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-07-25 08:45:59,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:45:59,868 INFO L225 Difference]: With dead ends: 91 [2018-07-25 08:45:59,868 INFO L226 Difference]: Without dead ends: 89 [2018-07-25 08:45:59,869 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:45:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-07-25 08:45:59,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-07-25 08:45:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-07-25 08:45:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-07-25 08:45:59,878 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-07-25 08:45:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:45:59,878 INFO L472 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-07-25 08:45:59,878 INFO L473 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-07-25 08:45:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-07-25 08:45:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-25 08:45:59,879 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:45:59,879 INFO L354 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-07-25 08:45:59,879 INFO L415 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:45:59,880 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-07-25 08:45:59,880 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:45:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:00,193 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:00,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-07-25 08:46:00,194 INFO L451 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-07-25 08:46:00,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-07-25 08:46:00,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:46:00,195 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-07-25 08:46:00,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:00,535 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-07-25 08:46:00,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-25 08:46:00,535 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-07-25 08:46:00,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:00,536 INFO L225 Difference]: With dead ends: 93 [2018-07-25 08:46:00,536 INFO L226 Difference]: Without dead ends: 91 [2018-07-25 08:46:00,537 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-07-25 08:46:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-07-25 08:46:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-07-25 08:46:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-07-25 08:46:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-07-25 08:46:00,545 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-07-25 08:46:00,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:00,545 INFO L472 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-07-25 08:46:00,545 INFO L473 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-07-25 08:46:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-07-25 08:46:00,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-25 08:46:00,546 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:00,546 INFO L354 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-07-25 08:46:00,547 INFO L415 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:00,547 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-07-25 08:46:00,547 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:00,849 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:00,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-07-25 08:46:00,850 INFO L451 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-07-25 08:46:00,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-07-25 08:46:00,851 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:46:00,851 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-07-25 08:46:01,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:01,181 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-07-25 08:46:01,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-25 08:46:01,182 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-07-25 08:46:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:01,183 INFO L225 Difference]: With dead ends: 95 [2018-07-25 08:46:01,183 INFO L226 Difference]: Without dead ends: 93 [2018-07-25 08:46:01,184 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-07-25 08:46:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-07-25 08:46:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-07-25 08:46:01,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:46:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-07-25 08:46:01,193 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-07-25 08:46:01,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:01,193 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-07-25 08:46:01,193 INFO L473 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-07-25 08:46:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-07-25 08:46:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-25 08:46:01,194 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:01,194 INFO L354 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-07-25 08:46:01,194 INFO L415 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:01,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-07-25 08:46:01,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:01,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:01,550 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-07-25 08:46:01,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-07-25 08:46:01,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-07-25 08:46:01,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:46:01,552 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-07-25 08:46:01,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:01,891 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-07-25 08:46:01,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-25 08:46:01,892 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-07-25 08:46:01,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:01,893 INFO L225 Difference]: With dead ends: 97 [2018-07-25 08:46:01,893 INFO L226 Difference]: Without dead ends: 95 [2018-07-25 08:46:01,893 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-07-25 08:46:01,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-07-25 08:46:01,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-07-25 08:46:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-07-25 08:46:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-07-25 08:46:01,901 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-07-25 08:46:01,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:01,901 INFO L472 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-07-25 08:46:01,901 INFO L473 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-07-25 08:46:01,903 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-07-25 08:46:01,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-25 08:46:01,904 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:01,904 INFO L354 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-07-25 08:46:01,905 INFO L415 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:01,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-07-25 08:46:01,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:02,171 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:02,171 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-07-25 08:46:02,172 INFO L451 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-07-25 08:46:02,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-07-25 08:46:02,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:46:02,173 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-07-25 08:46:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:02,485 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-07-25 08:46:02,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:46:02,486 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-07-25 08:46:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:02,487 INFO L225 Difference]: With dead ends: 99 [2018-07-25 08:46:02,487 INFO L226 Difference]: Without dead ends: 97 [2018-07-25 08:46:02,487 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-07-25 08:46:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-07-25 08:46:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-07-25 08:46:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-07-25 08:46:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-07-25 08:46:02,496 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-07-25 08:46:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:02,496 INFO L472 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-07-25 08:46:02,496 INFO L473 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-07-25 08:46:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-07-25 08:46:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-25 08:46:02,497 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:02,498 INFO L354 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-07-25 08:46:02,498 INFO L415 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:02,498 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-07-25 08:46:02,498 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:02,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:02,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-07-25 08:46:02,766 INFO L451 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-07-25 08:46:02,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-07-25 08:46:02,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:46:02,767 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-07-25 08:46:03,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:03,099 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-07-25 08:46:03,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-25 08:46:03,099 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-07-25 08:46:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:03,100 INFO L225 Difference]: With dead ends: 101 [2018-07-25 08:46:03,100 INFO L226 Difference]: Without dead ends: 99 [2018-07-25 08:46:03,104 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-07-25 08:46:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-07-25 08:46:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-07-25 08:46:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-07-25 08:46:03,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-07-25 08:46:03,113 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-07-25 08:46:03,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:03,113 INFO L472 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-07-25 08:46:03,113 INFO L473 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-07-25 08:46:03,113 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-07-25 08:46:03,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-25 08:46:03,114 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:03,114 INFO L354 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-07-25 08:46:03,115 INFO L415 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:03,115 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-07-25 08:46:03,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:03,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:03,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-07-25 08:46:03,386 INFO L451 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-07-25 08:46:03,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-07-25 08:46:03,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:46:03,387 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-07-25 08:46:03,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:03,726 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-07-25 08:46:03,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-25 08:46:03,726 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-07-25 08:46:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:03,727 INFO L225 Difference]: With dead ends: 103 [2018-07-25 08:46:03,727 INFO L226 Difference]: Without dead ends: 101 [2018-07-25 08:46:03,728 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 08:46:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-07-25 08:46:03,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-07-25 08:46:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-07-25 08:46:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-07-25 08:46:03,737 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-07-25 08:46:03,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:03,737 INFO L472 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-07-25 08:46:03,737 INFO L473 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-07-25 08:46:03,737 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-07-25 08:46:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-25 08:46:03,738 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:03,738 INFO L354 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-07-25 08:46:03,738 INFO L415 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:03,739 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-07-25 08:46:03,739 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:04,040 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:04,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-07-25 08:46:04,041 INFO L451 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-07-25 08:46:04,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-07-25 08:46:04,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-07-25 08:46:04,042 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-07-25 08:46:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:04,424 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-07-25 08:46:04,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-25 08:46:04,424 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-07-25 08:46:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:04,426 INFO L225 Difference]: With dead ends: 105 [2018-07-25 08:46:04,426 INFO L226 Difference]: Without dead ends: 103 [2018-07-25 08:46:04,426 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 08:46:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-07-25 08:46:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-07-25 08:46:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-07-25 08:46:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-07-25 08:46:04,433 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-07-25 08:46:04,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:04,434 INFO L472 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-07-25 08:46:04,434 INFO L473 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-07-25 08:46:04,434 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-07-25 08:46:04,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-25 08:46:04,435 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:04,435 INFO L354 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-07-25 08:46:04,435 INFO L415 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:04,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-07-25 08:46:04,435 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:04,735 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:04,735 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-07-25 08:46:04,736 INFO L451 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-07-25 08:46:04,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-07-25 08:46:04,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-07-25 08:46:04,737 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-07-25 08:46:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:05,074 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-07-25 08:46:05,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-07-25 08:46:05,075 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-07-25 08:46:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:05,075 INFO L225 Difference]: With dead ends: 107 [2018-07-25 08:46:05,076 INFO L226 Difference]: Without dead ends: 105 [2018-07-25 08:46:05,076 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 08:46:05,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-07-25 08:46:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-07-25 08:46:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-07-25 08:46:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-07-25 08:46:05,083 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-07-25 08:46:05,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:05,083 INFO L472 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-07-25 08:46:05,083 INFO L473 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-07-25 08:46:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-07-25 08:46:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-25 08:46:05,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:05,084 INFO L354 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-07-25 08:46:05,084 INFO L415 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:05,085 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-07-25 08:46:05,085 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:05,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:05,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-07-25 08:46:05,363 INFO L451 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-07-25 08:46:05,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-07-25 08:46:05,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-07-25 08:46:05,364 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-07-25 08:46:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:05,744 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-07-25 08:46:05,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:46:05,745 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-07-25 08:46:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:05,746 INFO L225 Difference]: With dead ends: 109 [2018-07-25 08:46:05,746 INFO L226 Difference]: Without dead ends: 107 [2018-07-25 08:46:05,746 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 08:46:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-07-25 08:46:05,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-07-25 08:46:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-07-25 08:46:05,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-07-25 08:46:05,762 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-07-25 08:46:05,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:05,762 INFO L472 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-07-25 08:46:05,762 INFO L473 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-07-25 08:46:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-07-25 08:46:05,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-25 08:46:05,763 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:05,764 INFO L354 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-07-25 08:46:05,764 INFO L415 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:05,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-07-25 08:46:05,766 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:06,064 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:06,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-07-25 08:46:06,064 INFO L451 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-07-25 08:46:06,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-07-25 08:46:06,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:46:06,065 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-07-25 08:46:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:06,476 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-07-25 08:46:06,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-25 08:46:06,476 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-07-25 08:46:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:06,477 INFO L225 Difference]: With dead ends: 111 [2018-07-25 08:46:06,477 INFO L226 Difference]: Without dead ends: 109 [2018-07-25 08:46:06,478 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:46:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-07-25 08:46:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-07-25 08:46:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-07-25 08:46:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-07-25 08:46:06,487 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-07-25 08:46:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:06,488 INFO L472 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-07-25 08:46:06,488 INFO L473 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-07-25 08:46:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-07-25 08:46:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-07-25 08:46:06,489 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:06,489 INFO L354 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-07-25 08:46:06,489 INFO L415 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:06,490 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-07-25 08:46:06,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:06,824 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:06,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-07-25 08:46:06,824 INFO L451 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-07-25 08:46:06,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-07-25 08:46:06,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:46:06,825 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-07-25 08:46:07,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:07,279 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-07-25 08:46:07,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-25 08:46:07,279 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-07-25 08:46:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:07,280 INFO L225 Difference]: With dead ends: 113 [2018-07-25 08:46:07,281 INFO L226 Difference]: Without dead ends: 111 [2018-07-25 08:46:07,281 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-07-25 08:46:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-07-25 08:46:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-07-25 08:46:07,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-07-25 08:46:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-07-25 08:46:07,289 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-07-25 08:46:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:07,289 INFO L472 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-07-25 08:46:07,289 INFO L473 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-07-25 08:46:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-07-25 08:46:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-25 08:46:07,291 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:07,291 INFO L354 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-07-25 08:46:07,291 INFO L415 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:07,291 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-07-25 08:46:07,291 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:07,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:07,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-07-25 08:46:07,601 INFO L451 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-07-25 08:46:07,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-07-25 08:46:07,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-07-25 08:46:07,602 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-07-25 08:46:08,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:08,016 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-07-25 08:46:08,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-25 08:46:08,017 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-07-25 08:46:08,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:08,018 INFO L225 Difference]: With dead ends: 115 [2018-07-25 08:46:08,018 INFO L226 Difference]: Without dead ends: 113 [2018-07-25 08:46:08,019 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 08:46:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-07-25 08:46:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-07-25 08:46:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-07-25 08:46:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-07-25 08:46:08,025 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-07-25 08:46:08,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:08,025 INFO L472 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-07-25 08:46:08,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-07-25 08:46:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-07-25 08:46:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-25 08:46:08,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:08,027 INFO L354 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-07-25 08:46:08,027 INFO L415 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-07-25 08:46:08,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:08,359 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:08,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-07-25 08:46:08,359 INFO L451 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-07-25 08:46:08,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-07-25 08:46:08,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:46:08,360 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-07-25 08:46:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:08,823 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-07-25 08:46:08,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-25 08:46:08,824 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-07-25 08:46:08,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:08,825 INFO L225 Difference]: With dead ends: 117 [2018-07-25 08:46:08,825 INFO L226 Difference]: Without dead ends: 115 [2018-07-25 08:46:08,826 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:46:08,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-07-25 08:46:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-07-25 08:46:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-07-25 08:46:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-07-25 08:46:08,834 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-07-25 08:46:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:08,835 INFO L472 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-07-25 08:46:08,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-07-25 08:46:08,835 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-07-25 08:46:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-25 08:46:08,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:08,836 INFO L354 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-07-25 08:46:08,837 INFO L415 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:08,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-07-25 08:46:08,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:09,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:09,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-07-25 08:46:09,212 INFO L451 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-07-25 08:46:09,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-07-25 08:46:09,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:46:09,213 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-07-25 08:46:09,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:09,653 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-07-25 08:46:09,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-25 08:46:09,653 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-07-25 08:46:09,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:09,654 INFO L225 Difference]: With dead ends: 119 [2018-07-25 08:46:09,654 INFO L226 Difference]: Without dead ends: 117 [2018-07-25 08:46:09,655 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-07-25 08:46:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-07-25 08:46:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-07-25 08:46:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-07-25 08:46:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-07-25 08:46:09,663 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-07-25 08:46:09,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:09,663 INFO L472 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-07-25 08:46:09,663 INFO L473 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-07-25 08:46:09,663 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-07-25 08:46:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-25 08:46:09,664 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:09,664 INFO L354 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-07-25 08:46:09,665 INFO L415 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:09,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-07-25 08:46:09,665 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:10,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:10,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-07-25 08:46:10,017 INFO L451 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-07-25 08:46:10,017 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-07-25 08:46:10,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:46:10,018 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-07-25 08:46:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:10,438 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-07-25 08:46:10,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-25 08:46:10,439 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-07-25 08:46:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:10,439 INFO L225 Difference]: With dead ends: 121 [2018-07-25 08:46:10,440 INFO L226 Difference]: Without dead ends: 119 [2018-07-25 08:46:10,440 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-07-25 08:46:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-07-25 08:46:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-07-25 08:46:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-07-25 08:46:10,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-07-25 08:46:10,447 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-07-25 08:46:10,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:10,447 INFO L472 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-07-25 08:46:10,448 INFO L473 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-07-25 08:46:10,448 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-07-25 08:46:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-25 08:46:10,448 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:10,448 INFO L354 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-07-25 08:46:10,449 INFO L415 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:10,449 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-07-25 08:46:10,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:10,762 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:10,762 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-07-25 08:46:10,763 INFO L451 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-25 08:46:10,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-25 08:46:10,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:46:10,764 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-07-25 08:46:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:11,085 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-07-25 08:46:11,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-25 08:46:11,085 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-07-25 08:46:11,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:11,086 INFO L225 Difference]: With dead ends: 123 [2018-07-25 08:46:11,086 INFO L226 Difference]: Without dead ends: 121 [2018-07-25 08:46:11,087 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-07-25 08:46:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-07-25 08:46:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-07-25 08:46:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-07-25 08:46:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-07-25 08:46:11,093 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-07-25 08:46:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:11,093 INFO L472 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-07-25 08:46:11,093 INFO L473 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-07-25 08:46:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-07-25 08:46:11,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-25 08:46:11,094 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:11,094 INFO L354 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-07-25 08:46:11,094 INFO L415 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:11,095 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-07-25 08:46:11,095 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:11,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:11,454 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-07-25 08:46:11,454 INFO L451 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-07-25 08:46:11,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-07-25 08:46:11,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:46:11,456 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-07-25 08:46:11,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:11,943 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-07-25 08:46:11,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-25 08:46:11,943 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-07-25 08:46:11,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:11,944 INFO L225 Difference]: With dead ends: 125 [2018-07-25 08:46:11,944 INFO L226 Difference]: Without dead ends: 123 [2018-07-25 08:46:11,945 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-07-25 08:46:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-07-25 08:46:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-07-25 08:46:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-07-25 08:46:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-07-25 08:46:11,952 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-07-25 08:46:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:11,952 INFO L472 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-07-25 08:46:11,952 INFO L473 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-07-25 08:46:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-07-25 08:46:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-25 08:46:11,953 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:11,953 INFO L354 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-07-25 08:46:11,953 INFO L415 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:11,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-07-25 08:46:11,954 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:12,293 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:12,293 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-07-25 08:46:12,293 INFO L451 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-07-25 08:46:12,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-07-25 08:46:12,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:46:12,294 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-07-25 08:46:12,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:12,633 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-07-25 08:46:12,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-25 08:46:12,633 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-07-25 08:46:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:12,634 INFO L225 Difference]: With dead ends: 127 [2018-07-25 08:46:12,634 INFO L226 Difference]: Without dead ends: 125 [2018-07-25 08:46:12,635 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-07-25 08:46:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-07-25 08:46:12,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-07-25 08:46:12,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-07-25 08:46:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-07-25 08:46:12,642 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-07-25 08:46:12,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:12,642 INFO L472 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-07-25 08:46:12,642 INFO L473 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-07-25 08:46:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-07-25 08:46:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-25 08:46:12,643 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:12,643 INFO L354 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-07-25 08:46:12,643 INFO L415 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:12,643 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-07-25 08:46:12,643 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:12,937 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:12,937 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-07-25 08:46:12,938 INFO L451 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-07-25 08:46:12,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-07-25 08:46:12,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-07-25 08:46:12,938 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-07-25 08:46:13,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:13,284 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-07-25 08:46:13,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-25 08:46:13,284 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-07-25 08:46:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:13,285 INFO L225 Difference]: With dead ends: 129 [2018-07-25 08:46:13,285 INFO L226 Difference]: Without dead ends: 127 [2018-07-25 08:46:13,285 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 08:46:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-25 08:46:13,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-07-25 08:46:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-07-25 08:46:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-07-25 08:46:13,293 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-07-25 08:46:13,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:13,293 INFO L472 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-07-25 08:46:13,293 INFO L473 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-07-25 08:46:13,293 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-07-25 08:46:13,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-25 08:46:13,294 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:13,294 INFO L354 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-07-25 08:46:13,294 INFO L415 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:13,295 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-07-25 08:46:13,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:13,615 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:13,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-07-25 08:46:13,616 INFO L451 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-07-25 08:46:13,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-07-25 08:46:13,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-07-25 08:46:13,617 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-07-25 08:46:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:13,985 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-07-25 08:46:13,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-07-25 08:46:13,986 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-07-25 08:46:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:13,987 INFO L225 Difference]: With dead ends: 131 [2018-07-25 08:46:13,987 INFO L226 Difference]: Without dead ends: 129 [2018-07-25 08:46:13,988 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 08:46:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-07-25 08:46:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-07-25 08:46:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-07-25 08:46:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-07-25 08:46:14,001 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-07-25 08:46:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:14,002 INFO L472 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-07-25 08:46:14,002 INFO L473 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-07-25 08:46:14,002 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-07-25 08:46:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-25 08:46:14,003 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:14,003 INFO L354 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-07-25 08:46:14,003 INFO L415 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:14,005 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-07-25 08:46:14,006 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:14,356 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:14,357 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-07-25 08:46:14,357 INFO L451 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-07-25 08:46:14,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-07-25 08:46:14,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:46:14,358 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-07-25 08:46:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:14,697 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-07-25 08:46:14,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-25 08:46:14,697 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-07-25 08:46:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:14,698 INFO L225 Difference]: With dead ends: 133 [2018-07-25 08:46:14,699 INFO L226 Difference]: Without dead ends: 131 [2018-07-25 08:46:14,699 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-07-25 08:46:14,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-07-25 08:46:14,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-07-25 08:46:14,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-07-25 08:46:14,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-07-25 08:46:14,709 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-07-25 08:46:14,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:14,709 INFO L472 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-07-25 08:46:14,709 INFO L473 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-07-25 08:46:14,710 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-07-25 08:46:14,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-25 08:46:14,711 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:14,711 INFO L354 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-07-25 08:46:14,711 INFO L415 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:14,711 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-07-25 08:46:14,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:15,072 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:15,073 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-07-25 08:46:15,073 INFO L451 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-07-25 08:46:15,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-07-25 08:46:15,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:46:15,074 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-07-25 08:46:15,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:15,494 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-07-25 08:46:15,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-07-25 08:46:15,494 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-07-25 08:46:15,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:15,495 INFO L225 Difference]: With dead ends: 135 [2018-07-25 08:46:15,496 INFO L226 Difference]: Without dead ends: 133 [2018-07-25 08:46:15,496 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-07-25 08:46:15,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-07-25 08:46:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-07-25 08:46:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-07-25 08:46:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-07-25 08:46:15,534 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-07-25 08:46:15,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:15,535 INFO L472 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-07-25 08:46:15,535 INFO L473 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-07-25 08:46:15,535 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-07-25 08:46:15,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-25 08:46:15,536 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:15,536 INFO L354 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-07-25 08:46:15,536 INFO L415 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:15,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-07-25 08:46:15,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:15,907 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:15,907 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-07-25 08:46:15,907 INFO L451 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-07-25 08:46:15,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-07-25 08:46:15,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:46:15,908 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-07-25 08:46:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:16,296 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-07-25 08:46:16,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-07-25 08:46:16,297 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-07-25 08:46:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:16,297 INFO L225 Difference]: With dead ends: 137 [2018-07-25 08:46:16,298 INFO L226 Difference]: Without dead ends: 135 [2018-07-25 08:46:16,298 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-07-25 08:46:16,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-07-25 08:46:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-07-25 08:46:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-07-25 08:46:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-07-25 08:46:16,306 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-07-25 08:46:16,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:16,306 INFO L472 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-07-25 08:46:16,307 INFO L473 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-07-25 08:46:16,307 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-07-25 08:46:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-25 08:46:16,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:16,308 INFO L354 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-07-25 08:46:16,308 INFO L415 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:16,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-07-25 08:46:16,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:16,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:16,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-07-25 08:46:16,606 INFO L451 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-07-25 08:46:16,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-07-25 08:46:16,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-07-25 08:46:16,607 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-07-25 08:46:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:16,995 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-07-25 08:46:16,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-07-25 08:46:16,996 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-07-25 08:46:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:16,997 INFO L225 Difference]: With dead ends: 139 [2018-07-25 08:46:16,997 INFO L226 Difference]: Without dead ends: 137 [2018-07-25 08:46:16,997 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 08:46:16,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-07-25 08:46:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-07-25 08:46:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-07-25 08:46:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-07-25 08:46:17,005 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-07-25 08:46:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:17,006 INFO L472 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-07-25 08:46:17,006 INFO L473 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-07-25 08:46:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-07-25 08:46:17,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-25 08:46:17,006 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:17,007 INFO L354 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-07-25 08:46:17,007 INFO L415 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:17,007 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-07-25 08:46:17,007 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:17,293 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:17,293 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-07-25 08:46:17,293 INFO L451 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-07-25 08:46:17,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-07-25 08:46:17,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-07-25 08:46:17,294 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-07-25 08:46:17,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:17,718 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-07-25 08:46:17,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-07-25 08:46:17,719 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-07-25 08:46:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:17,720 INFO L225 Difference]: With dead ends: 141 [2018-07-25 08:46:17,720 INFO L226 Difference]: Without dead ends: 139 [2018-07-25 08:46:17,721 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 08:46:17,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-07-25 08:46:17,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-07-25 08:46:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-07-25 08:46:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-07-25 08:46:17,730 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-07-25 08:46:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:17,731 INFO L472 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-07-25 08:46:17,731 INFO L473 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-07-25 08:46:17,731 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-07-25 08:46:17,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-25 08:46:17,732 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:17,732 INFO L354 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-07-25 08:46:17,732 INFO L415 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:17,732 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-07-25 08:46:17,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:18,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:18,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-07-25 08:46:18,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-07-25 08:46:18,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-07-25 08:46:18,089 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-07-25 08:46:18,090 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-07-25 08:46:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:18,517 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-07-25 08:46:18,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-25 08:46:18,517 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-07-25 08:46:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:18,518 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:46:18,518 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:46:18,519 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 08:46:18,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:46:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-07-25 08:46:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-07-25 08:46:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-07-25 08:46:18,528 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-07-25 08:46:18,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:18,528 INFO L472 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-07-25 08:46:18,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-07-25 08:46:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-07-25 08:46:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-25 08:46:18,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:18,529 INFO L354 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-07-25 08:46:18,530 INFO L415 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:18,530 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-07-25 08:46:18,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:18,877 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:18,877 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-07-25 08:46:18,878 INFO L451 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-07-25 08:46:18,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-07-25 08:46:18,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-07-25 08:46:18,878 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-07-25 08:46:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:19,270 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-07-25 08:46:19,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-07-25 08:46:19,270 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-07-25 08:46:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:19,271 INFO L225 Difference]: With dead ends: 145 [2018-07-25 08:46:19,271 INFO L226 Difference]: Without dead ends: 143 [2018-07-25 08:46:19,271 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 08:46:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-07-25 08:46:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-07-25 08:46:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-07-25 08:46:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-07-25 08:46:19,279 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-07-25 08:46:19,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:19,279 INFO L472 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-07-25 08:46:19,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-07-25 08:46:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-07-25 08:46:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-07-25 08:46:19,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:19,280 INFO L354 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-07-25 08:46:19,281 INFO L415 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:19,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-07-25 08:46:19,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:19,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:19,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-07-25 08:46:19,743 INFO L451 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-07-25 08:46:19,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-07-25 08:46:19,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:46:19,744 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-07-25 08:46:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:20,254 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-07-25 08:46:20,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-07-25 08:46:20,254 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-07-25 08:46:20,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:20,255 INFO L225 Difference]: With dead ends: 147 [2018-07-25 08:46:20,255 INFO L226 Difference]: Without dead ends: 145 [2018-07-25 08:46:20,256 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-07-25 08:46:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-07-25 08:46:20,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-07-25 08:46:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-07-25 08:46:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-07-25 08:46:20,264 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-07-25 08:46:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:20,265 INFO L472 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-07-25 08:46:20,265 INFO L473 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-07-25 08:46:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-07-25 08:46:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-25 08:46:20,266 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:20,266 INFO L354 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-07-25 08:46:20,266 INFO L415 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:20,267 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-07-25 08:46:20,267 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:20,654 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:20,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-07-25 08:46:20,654 INFO L451 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-07-25 08:46:20,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-07-25 08:46:20,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-07-25 08:46:20,655 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-07-25 08:46:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:21,070 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-07-25 08:46:21,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-07-25 08:46:21,071 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-07-25 08:46:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:21,071 INFO L225 Difference]: With dead ends: 149 [2018-07-25 08:46:21,072 INFO L226 Difference]: Without dead ends: 147 [2018-07-25 08:46:21,072 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 08:46:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-07-25 08:46:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-07-25 08:46:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:46:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-07-25 08:46:21,079 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-07-25 08:46:21,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:21,079 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-07-25 08:46:21,079 INFO L473 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-07-25 08:46:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-07-25 08:46:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-25 08:46:21,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:21,080 INFO L354 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-07-25 08:46:21,081 INFO L415 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:21,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-07-25 08:46:21,081 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:21,417 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:21,417 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-07-25 08:46:21,417 INFO L451 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-07-25 08:46:21,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-07-25 08:46:21,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:46:21,418 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-07-25 08:46:21,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:21,857 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-07-25 08:46:21,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-07-25 08:46:21,857 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-07-25 08:46:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:21,858 INFO L225 Difference]: With dead ends: 151 [2018-07-25 08:46:21,859 INFO L226 Difference]: Without dead ends: 149 [2018-07-25 08:46:21,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-07-25 08:46:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-07-25 08:46:21,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-07-25 08:46:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-07-25 08:46:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-07-25 08:46:21,867 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-07-25 08:46:21,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:21,868 INFO L472 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-07-25 08:46:21,868 INFO L473 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-07-25 08:46:21,868 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-07-25 08:46:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-07-25 08:46:21,869 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:21,869 INFO L354 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-07-25 08:46:21,869 INFO L415 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:21,870 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-07-25 08:46:21,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:22,285 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:22,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-07-25 08:46:22,285 INFO L451 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-07-25 08:46:22,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-07-25 08:46:22,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:46:22,286 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-07-25 08:46:22,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:22,734 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-07-25 08:46:22,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-25 08:46:22,735 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-07-25 08:46:22,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:22,736 INFO L225 Difference]: With dead ends: 153 [2018-07-25 08:46:22,736 INFO L226 Difference]: Without dead ends: 151 [2018-07-25 08:46:22,737 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-07-25 08:46:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-07-25 08:46:22,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-07-25 08:46:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:46:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-07-25 08:46:22,745 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-07-25 08:46:22,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:22,745 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-07-25 08:46:22,745 INFO L473 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-07-25 08:46:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-07-25 08:46:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-25 08:46:22,746 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:22,746 INFO L354 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-07-25 08:46:22,746 INFO L415 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:22,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-07-25 08:46:22,747 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:23,103 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:23,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2018-07-25 08:46:23,104 INFO L451 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-07-25 08:46:23,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-07-25 08:46:23,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:46:23,104 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-07-25 08:46:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:23,555 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-07-25 08:46:23,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-07-25 08:46:23,555 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-07-25 08:46:23,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:23,556 INFO L225 Difference]: With dead ends: 155 [2018-07-25 08:46:23,556 INFO L226 Difference]: Without dead ends: 153 [2018-07-25 08:46:23,556 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-07-25 08:46:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-07-25 08:46:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-07-25 08:46:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-07-25 08:46:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-07-25 08:46:23,565 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-07-25 08:46:23,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:23,565 INFO L472 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-07-25 08:46:23,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-07-25 08:46:23,566 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-07-25 08:46:23,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-25 08:46:23,566 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:23,567 INFO L354 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-07-25 08:46:23,567 INFO L415 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:23,567 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-07-25 08:46:23,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:23,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:23,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2018-07-25 08:46:23,914 INFO L451 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-07-25 08:46:23,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-07-25 08:46:23,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-07-25 08:46:23,915 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-07-25 08:46:24,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:24,383 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-07-25 08:46:24,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-25 08:46:24,384 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-07-25 08:46:24,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:24,385 INFO L225 Difference]: With dead ends: 157 [2018-07-25 08:46:24,385 INFO L226 Difference]: Without dead ends: 155 [2018-07-25 08:46:24,386 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 08:46:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-07-25 08:46:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-07-25 08:46:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-07-25 08:46:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-07-25 08:46:24,393 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-07-25 08:46:24,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:24,394 INFO L472 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-07-25 08:46:24,394 INFO L473 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-07-25 08:46:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-07-25 08:46:24,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-07-25 08:46:24,395 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:24,395 INFO L354 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-07-25 08:46:24,395 INFO L415 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:24,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-07-25 08:46:24,396 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:24,779 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:24,779 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2018-07-25 08:46:24,780 INFO L451 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-07-25 08:46:24,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-07-25 08:46:24,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-07-25 08:46:24,780 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-07-25 08:46:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:25,264 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-07-25 08:46:25,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-07-25 08:46:25,264 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-07-25 08:46:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:25,265 INFO L225 Difference]: With dead ends: 159 [2018-07-25 08:46:25,265 INFO L226 Difference]: Without dead ends: 157 [2018-07-25 08:46:25,266 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 08:46:25,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-07-25 08:46:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-07-25 08:46:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-07-25 08:46:25,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-07-25 08:46:25,274 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-07-25 08:46:25,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:25,274 INFO L472 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-07-25 08:46:25,274 INFO L473 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-07-25 08:46:25,275 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-07-25 08:46:25,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-25 08:46:25,275 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:25,276 INFO L354 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-07-25 08:46:25,276 INFO L415 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:25,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-07-25 08:46:25,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:25,769 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:25,769 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-07-25 08:46:25,769 INFO L451 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-07-25 08:46:25,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-07-25 08:46:25,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:46:25,770 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-07-25 08:46:26,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:26,242 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-07-25 08:46:26,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-07-25 08:46:26,243 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-07-25 08:46:26,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:26,243 INFO L225 Difference]: With dead ends: 161 [2018-07-25 08:46:26,244 INFO L226 Difference]: Without dead ends: 159 [2018-07-25 08:46:26,244 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-07-25 08:46:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-07-25 08:46:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-07-25 08:46:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-07-25 08:46:26,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-07-25 08:46:26,250 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-07-25 08:46:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:26,250 INFO L472 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-07-25 08:46:26,251 INFO L473 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-07-25 08:46:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-07-25 08:46:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-25 08:46:26,251 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:26,251 INFO L354 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-07-25 08:46:26,252 INFO L415 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:26,252 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-07-25 08:46:26,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:26,645 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:26,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-07-25 08:46:26,645 INFO L451 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-07-25 08:46:26,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-07-25 08:46:26,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2018-07-25 08:46:26,646 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-07-25 08:46:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:27,155 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-07-25 08:46:27,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-07-25 08:46:27,155 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-07-25 08:46:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:27,156 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:46:27,156 INFO L226 Difference]: Without dead ends: 161 [2018-07-25 08:46:27,157 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 08:46:27,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-07-25 08:46:27,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-07-25 08:46:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-07-25 08:46:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-07-25 08:46:27,165 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-07-25 08:46:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:27,165 INFO L472 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-07-25 08:46:27,165 INFO L473 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-07-25 08:46:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-07-25 08:46:27,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-25 08:46:27,166 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:27,166 INFO L354 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-07-25 08:46:27,167 INFO L415 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:27,167 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-07-25 08:46:27,167 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:27,532 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:27,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2018-07-25 08:46:27,532 INFO L451 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-07-25 08:46:27,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-07-25 08:46:27,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=6321, Unknown=0, NotChecked=0, Total=6480 [2018-07-25 08:46:27,533 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-07-25 08:46:28,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:28,069 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-07-25 08:46:28,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-07-25 08:46:28,069 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-07-25 08:46:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:28,070 INFO L225 Difference]: With dead ends: 165 [2018-07-25 08:46:28,071 INFO L226 Difference]: Without dead ends: 163 [2018-07-25 08:46:28,071 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 08:46:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-07-25 08:46:28,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-07-25 08:46:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-07-25 08:46:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-07-25 08:46:28,079 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-07-25 08:46:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:28,080 INFO L472 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-07-25 08:46:28,080 INFO L473 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-07-25 08:46:28,080 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-07-25 08:46:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-25 08:46:28,081 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:28,081 INFO L354 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-07-25 08:46:28,081 INFO L415 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:28,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-07-25 08:46:28,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:28,464 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:28,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2018-07-25 08:46:28,465 INFO L451 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-07-25 08:46:28,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-07-25 08:46:28,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2018-07-25 08:46:28,466 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-07-25 08:46:29,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:29,003 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-07-25 08:46:29,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-07-25 08:46:29,004 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-07-25 08:46:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:29,005 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:46:29,005 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:46:29,006 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 08:46:29,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:46:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-07-25 08:46:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-25 08:46:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-07-25 08:46:29,015 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-07-25 08:46:29,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:29,015 INFO L472 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-07-25 08:46:29,015 INFO L473 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-07-25 08:46:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-07-25 08:46:29,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-25 08:46:29,016 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:29,016 INFO L354 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-07-25 08:46:29,017 INFO L415 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:29,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-07-25 08:46:29,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:29,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:29,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2018-07-25 08:46:29,452 INFO L451 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-07-25 08:46:29,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-07-25 08:46:29,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=6643, Unknown=0, NotChecked=0, Total=6806 [2018-07-25 08:46:29,453 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-07-25 08:46:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:30,087 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-07-25 08:46:30,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-07-25 08:46:30,087 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-07-25 08:46:30,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:30,088 INFO L225 Difference]: With dead ends: 169 [2018-07-25 08:46:30,088 INFO L226 Difference]: Without dead ends: 167 [2018-07-25 08:46:30,089 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 08:46:30,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-07-25 08:46:30,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-07-25 08:46:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-07-25 08:46:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-07-25 08:46:30,097 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-07-25 08:46:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:30,098 INFO L472 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-07-25 08:46:30,098 INFO L473 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-07-25 08:46:30,098 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-07-25 08:46:30,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-07-25 08:46:30,099 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:30,099 INFO L354 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-07-25 08:46:30,099 INFO L415 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:30,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-07-25 08:46:30,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:30,552 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:30,552 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-07-25 08:46:30,552 INFO L451 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-07-25 08:46:30,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-07-25 08:46:30,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2018-07-25 08:46:30,553 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-07-25 08:46:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:31,112 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-07-25 08:46:31,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-07-25 08:46:31,112 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-07-25 08:46:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:31,113 INFO L225 Difference]: With dead ends: 171 [2018-07-25 08:46:31,113 INFO L226 Difference]: Without dead ends: 169 [2018-07-25 08:46:31,114 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 08:46:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-07-25 08:46:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-07-25 08:46:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-07-25 08:46:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-07-25 08:46:31,121 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-07-25 08:46:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:31,121 INFO L472 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-07-25 08:46:31,122 INFO L473 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-07-25 08:46:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-07-25 08:46:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-07-25 08:46:31,123 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:31,123 INFO L354 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-07-25 08:46:31,123 INFO L415 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:31,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-07-25 08:46:31,124 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:31,614 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:31,614 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2018-07-25 08:46:31,614 INFO L451 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-07-25 08:46:31,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-07-25 08:46:31,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6973, Unknown=0, NotChecked=0, Total=7140 [2018-07-25 08:46:31,615 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-07-25 08:46:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:32,172 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-07-25 08:46:32,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-07-25 08:46:32,172 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-07-25 08:46:32,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:32,173 INFO L225 Difference]: With dead ends: 173 [2018-07-25 08:46:32,173 INFO L226 Difference]: Without dead ends: 171 [2018-07-25 08:46:32,174 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 08:46:32,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-07-25 08:46:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-07-25 08:46:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-07-25 08:46:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-07-25 08:46:32,183 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-07-25 08:46:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:32,184 INFO L472 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-07-25 08:46:32,184 INFO L473 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-07-25 08:46:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-07-25 08:46:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-25 08:46:32,185 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:32,185 INFO L354 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-07-25 08:46:32,185 INFO L415 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:32,186 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-07-25 08:46:32,186 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:32,598 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:32,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2018-07-25 08:46:32,598 INFO L451 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-07-25 08:46:32,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-07-25 08:46:32,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:46:32,599 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-07-25 08:46:33,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:33,180 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-07-25 08:46:33,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-07-25 08:46:33,180 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-07-25 08:46:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:33,181 INFO L225 Difference]: With dead ends: 175 [2018-07-25 08:46:33,181 INFO L226 Difference]: Without dead ends: 173 [2018-07-25 08:46:33,182 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2018-07-25 08:46:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-07-25 08:46:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-07-25 08:46:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-07-25 08:46:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-07-25 08:46:33,191 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-07-25 08:46:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:33,191 INFO L472 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-07-25 08:46:33,191 INFO L473 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-07-25 08:46:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-07-25 08:46:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-25 08:46:33,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:33,192 INFO L354 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-07-25 08:46:33,193 INFO L415 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:33,193 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-07-25 08:46:33,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:33,653 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:33,653 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2018-07-25 08:46:33,653 INFO L451 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-07-25 08:46:33,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-07-25 08:46:33,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=7311, Unknown=0, NotChecked=0, Total=7482 [2018-07-25 08:46:33,654 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-07-25 08:46:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:34,281 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-07-25 08:46:34,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-07-25 08:46:34,282 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-07-25 08:46:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:34,283 INFO L225 Difference]: With dead ends: 177 [2018-07-25 08:46:34,283 INFO L226 Difference]: Without dead ends: 175 [2018-07-25 08:46:34,284 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 08:46:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-07-25 08:46:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-07-25 08:46:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-07-25 08:46:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-07-25 08:46:34,293 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-07-25 08:46:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:34,293 INFO L472 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-07-25 08:46:34,293 INFO L473 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-07-25 08:46:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-07-25 08:46:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-25 08:46:34,294 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:34,294 INFO L354 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-07-25 08:46:34,295 INFO L415 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:34,295 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-07-25 08:46:34,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:34,738 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:34,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2018-07-25 08:46:34,739 INFO L451 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-07-25 08:46:34,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-07-25 08:46:34,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:46:34,740 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-07-25 08:46:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:35,327 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-07-25 08:46:35,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-07-25 08:46:35,327 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-07-25 08:46:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:35,328 INFO L225 Difference]: With dead ends: 179 [2018-07-25 08:46:35,329 INFO L226 Difference]: Without dead ends: 177 [2018-07-25 08:46:35,329 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2018-07-25 08:46:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-07-25 08:46:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-07-25 08:46:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-07-25 08:46:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-07-25 08:46:35,339 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-07-25 08:46:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:35,339 INFO L472 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-07-25 08:46:35,339 INFO L473 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-07-25 08:46:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-07-25 08:46:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-25 08:46:35,340 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:35,340 INFO L354 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-07-25 08:46:35,341 INFO L415 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:35,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-07-25 08:46:35,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:35,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:35,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2018-07-25 08:46:35,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-07-25 08:46:35,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-07-25 08:46:35,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:46:35,963 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-07-25 08:46:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:36,576 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-07-25 08:46:36,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-25 08:46:36,576 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-07-25 08:46:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:36,577 INFO L225 Difference]: With dead ends: 181 [2018-07-25 08:46:36,577 INFO L226 Difference]: Without dead ends: 179 [2018-07-25 08:46:36,578 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=7657, Unknown=0, NotChecked=0, Total=7832 [2018-07-25 08:46:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-07-25 08:46:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-07-25 08:46:36,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-07-25 08:46:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-07-25 08:46:36,586 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-07-25 08:46:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:36,587 INFO L472 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-07-25 08:46:36,587 INFO L473 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-07-25 08:46:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-07-25 08:46:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-25 08:46:36,588 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:36,588 INFO L354 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-07-25 08:46:36,588 INFO L415 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:36,588 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-07-25 08:46:36,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:37,025 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:37,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2018-07-25 08:46:37,025 INFO L451 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-07-25 08:46:37,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-07-25 08:46:37,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:46:37,026 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-07-25 08:46:37,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:37,722 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-07-25 08:46:37,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-07-25 08:46:37,723 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-07-25 08:46:37,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:37,723 INFO L225 Difference]: With dead ends: 183 [2018-07-25 08:46:37,723 INFO L226 Difference]: Without dead ends: 181 [2018-07-25 08:46:37,724 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2018-07-25 08:46:37,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-07-25 08:46:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-07-25 08:46:37,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-07-25 08:46:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-07-25 08:46:37,732 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-07-25 08:46:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:37,732 INFO L472 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-07-25 08:46:37,732 INFO L473 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-07-25 08:46:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-07-25 08:46:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-25 08:46:37,733 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:37,733 INFO L354 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-07-25 08:46:37,734 INFO L415 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:37,734 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-07-25 08:46:37,734 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:38,143 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:38,143 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2018-07-25 08:46:38,143 INFO L451 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-07-25 08:46:38,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-07-25 08:46:38,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:46:38,144 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-07-25 08:46:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:38,767 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-07-25 08:46:38,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-07-25 08:46:38,767 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-07-25 08:46:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:38,768 INFO L225 Difference]: With dead ends: 185 [2018-07-25 08:46:38,768 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:46:38,768 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=8011, Unknown=0, NotChecked=0, Total=8190 [2018-07-25 08:46:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:46:38,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-07-25 08:46:38,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-07-25 08:46:38,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-07-25 08:46:38,777 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-07-25 08:46:38,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:38,777 INFO L472 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-07-25 08:46:38,777 INFO L473 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-07-25 08:46:38,777 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-07-25 08:46:38,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-25 08:46:38,778 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:38,778 INFO L354 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-07-25 08:46:38,779 INFO L415 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:38,779 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-07-25 08:46:38,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:39,281 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:39,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2018-07-25 08:46:39,281 INFO L451 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-07-25 08:46:39,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-07-25 08:46:39,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:46:39,282 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-07-25 08:46:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:39,951 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-07-25 08:46:39,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-07-25 08:46:39,951 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-07-25 08:46:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:39,952 INFO L225 Difference]: With dead ends: 187 [2018-07-25 08:46:39,952 INFO L226 Difference]: Without dead ends: 185 [2018-07-25 08:46:39,953 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=8191, Unknown=0, NotChecked=0, Total=8372 [2018-07-25 08:46:39,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-07-25 08:46:39,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-07-25 08:46:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-07-25 08:46:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-07-25 08:46:39,958 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-07-25 08:46:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:39,959 INFO L472 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-07-25 08:46:39,959 INFO L473 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-07-25 08:46:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-07-25 08:46:39,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-25 08:46:39,959 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:39,959 INFO L354 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-07-25 08:46:39,960 INFO L415 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:39,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-07-25 08:46:39,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:40,575 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:40,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2018-07-25 08:46:40,576 INFO L451 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-07-25 08:46:40,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-07-25 08:46:40,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:46:40,577 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-07-25 08:46:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:41,206 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-07-25 08:46:41,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-07-25 08:46:41,206 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-07-25 08:46:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:41,207 INFO L225 Difference]: With dead ends: 189 [2018-07-25 08:46:41,207 INFO L226 Difference]: Without dead ends: 187 [2018-07-25 08:46:41,208 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=8373, Unknown=0, NotChecked=0, Total=8556 [2018-07-25 08:46:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-07-25 08:46:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-07-25 08:46:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-07-25 08:46:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-07-25 08:46:41,215 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-07-25 08:46:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:41,215 INFO L472 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-07-25 08:46:41,215 INFO L473 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-07-25 08:46:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-07-25 08:46:41,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-25 08:46:41,216 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:41,217 INFO L354 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-07-25 08:46:41,217 INFO L415 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:41,217 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-07-25 08:46:41,217 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:41,665 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:41,665 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2018-07-25 08:46:41,665 INFO L451 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-07-25 08:46:41,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-07-25 08:46:41,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:46:41,666 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-07-25 08:46:42,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:42,348 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-07-25 08:46:42,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-07-25 08:46:42,348 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-07-25 08:46:42,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:42,349 INFO L225 Difference]: With dead ends: 191 [2018-07-25 08:46:42,349 INFO L226 Difference]: Without dead ends: 189 [2018-07-25 08:46:42,350 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=8557, Unknown=0, NotChecked=0, Total=8742 [2018-07-25 08:46:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-07-25 08:46:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-07-25 08:46:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-07-25 08:46:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-07-25 08:46:42,355 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-07-25 08:46:42,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:42,356 INFO L472 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-07-25 08:46:42,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-07-25 08:46:42,356 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-07-25 08:46:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-25 08:46:42,356 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:42,356 INFO L354 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-07-25 08:46:42,357 INFO L415 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:42,357 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-07-25 08:46:42,357 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:42,862 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:42,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-07-25 08:46:42,862 INFO L451 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-07-25 08:46:42,863 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-07-25 08:46:42,863 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:46:42,863 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-07-25 08:46:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:43,557 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-07-25 08:46:43,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-07-25 08:46:43,557 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-07-25 08:46:43,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:43,558 INFO L225 Difference]: With dead ends: 193 [2018-07-25 08:46:43,558 INFO L226 Difference]: Without dead ends: 191 [2018-07-25 08:46:43,559 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=8743, Unknown=0, NotChecked=0, Total=8930 [2018-07-25 08:46:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-07-25 08:46:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-07-25 08:46:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-07-25 08:46:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-07-25 08:46:43,566 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-07-25 08:46:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:43,567 INFO L472 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-07-25 08:46:43,567 INFO L473 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-07-25 08:46:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-07-25 08:46:43,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-25 08:46:43,568 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:43,568 INFO L354 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-07-25 08:46:43,569 INFO L415 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-07-25 08:46:43,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:44,132 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:44,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2018-07-25 08:46:44,132 INFO L451 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-07-25 08:46:44,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-07-25 08:46:44,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=8931, Unknown=0, NotChecked=0, Total=9120 [2018-07-25 08:46:44,133 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-07-25 08:46:44,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:44,819 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-07-25 08:46:44,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-07-25 08:46:44,819 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-07-25 08:46:44,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:44,820 INFO L225 Difference]: With dead ends: 195 [2018-07-25 08:46:44,820 INFO L226 Difference]: Without dead ends: 193 [2018-07-25 08:46:44,821 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 08:46:44,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-07-25 08:46:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-07-25 08:46:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-07-25 08:46:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-07-25 08:46:44,829 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-07-25 08:46:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:44,829 INFO L472 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-07-25 08:46:44,829 INFO L473 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-07-25 08:46:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-07-25 08:46:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-25 08:46:44,830 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:44,831 INFO L354 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-07-25 08:46:44,831 INFO L415 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:44,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-07-25 08:46:44,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:45,323 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:45,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2018-07-25 08:46:45,323 INFO L451 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-07-25 08:46:45,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-07-25 08:46:45,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=9121, Unknown=0, NotChecked=0, Total=9312 [2018-07-25 08:46:45,325 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-07-25 08:46:46,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:46,060 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-07-25 08:46:46,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-25 08:46:46,061 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-07-25 08:46:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:46,062 INFO L225 Difference]: With dead ends: 197 [2018-07-25 08:46:46,062 INFO L226 Difference]: Without dead ends: 195 [2018-07-25 08:46:46,063 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 08:46:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-07-25 08:46:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-07-25 08:46:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-07-25 08:46:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-07-25 08:46:46,071 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-07-25 08:46:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:46,072 INFO L472 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-07-25 08:46:46,072 INFO L473 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-07-25 08:46:46,072 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-07-25 08:46:46,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-25 08:46:46,073 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:46,073 INFO L354 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-07-25 08:46:46,073 INFO L415 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:46,073 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-07-25 08:46:46,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:46,632 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:46,633 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2018-07-25 08:46:46,633 INFO L451 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-07-25 08:46:46,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-07-25 08:46:46,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=9313, Unknown=0, NotChecked=0, Total=9506 [2018-07-25 08:46:46,634 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-07-25 08:46:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:47,379 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-07-25 08:46:47,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-07-25 08:46:47,379 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-07-25 08:46:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:47,380 INFO L225 Difference]: With dead ends: 199 [2018-07-25 08:46:47,380 INFO L226 Difference]: Without dead ends: 197 [2018-07-25 08:46:47,381 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 08:46:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-07-25 08:46:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-07-25 08:46:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-25 08:46:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-07-25 08:46:47,386 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-07-25 08:46:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:47,387 INFO L472 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-07-25 08:46:47,387 INFO L473 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-07-25 08:46:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-07-25 08:46:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-25 08:46:47,388 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:47,388 INFO L354 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-07-25 08:46:47,388 INFO L415 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:47,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-07-25 08:46:47,389 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:47,884 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:47,884 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-07-25 08:46:47,885 INFO L451 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-07-25 08:46:47,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-07-25 08:46:47,885 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=9507, Unknown=0, NotChecked=0, Total=9702 [2018-07-25 08:46:47,885 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-07-25 08:46:48,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:48,627 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-07-25 08:46:48,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-07-25 08:46:48,627 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-07-25 08:46:48,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:48,628 INFO L225 Difference]: With dead ends: 201 [2018-07-25 08:46:48,628 INFO L226 Difference]: Without dead ends: 199 [2018-07-25 08:46:48,628 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 08:46:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-07-25 08:46:48,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-07-25 08:46:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-07-25 08:46:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-07-25 08:46:48,634 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-07-25 08:46:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:48,634 INFO L472 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-07-25 08:46:48,634 INFO L473 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-07-25 08:46:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-07-25 08:46:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-25 08:46:48,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:48,635 INFO L354 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-07-25 08:46:48,635 INFO L415 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:48,635 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-07-25 08:46:48,635 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:49,161 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:49,161 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99] total 99 [2018-07-25 08:46:49,161 INFO L451 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-07-25 08:46:49,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-07-25 08:46:49,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=9703, Unknown=0, NotChecked=0, Total=9900 [2018-07-25 08:46:49,163 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-07-25 08:46:49,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:49,912 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-07-25 08:46:49,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-25 08:46:49,912 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-07-25 08:46:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:49,913 INFO L225 Difference]: With dead ends: 203 [2018-07-25 08:46:49,913 INFO L226 Difference]: Without dead ends: 201 [2018-07-25 08:46:49,914 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 08:46:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-07-25 08:46:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-07-25 08:46:49,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-07-25 08:46:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-07-25 08:46:49,919 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-07-25 08:46:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:49,919 INFO L472 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-07-25 08:46:49,919 INFO L473 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-07-25 08:46:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-07-25 08:46:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-25 08:46:49,920 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:49,920 INFO L354 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-07-25 08:46:49,920 INFO L415 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:49,921 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-07-25 08:46:49,921 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:50,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:50,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100] total 100 [2018-07-25 08:46:50,517 INFO L451 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-07-25 08:46:50,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-07-25 08:46:50,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=9901, Unknown=0, NotChecked=0, Total=10100 [2018-07-25 08:46:50,519 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-07-25 08:46:51,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:51,263 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-07-25 08:46:51,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-07-25 08:46:51,263 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-07-25 08:46:51,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:51,264 INFO L225 Difference]: With dead ends: 205 [2018-07-25 08:46:51,264 INFO L226 Difference]: Without dead ends: 203 [2018-07-25 08:46:51,265 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 08:46:51,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-07-25 08:46:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-07-25 08:46:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:46:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-07-25 08:46:51,273 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-07-25 08:46:51,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:51,274 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-07-25 08:46:51,274 INFO L473 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-07-25 08:46:51,274 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-07-25 08:46:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-25 08:46:51,275 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:51,275 INFO L354 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-07-25 08:46:51,275 INFO L415 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:51,276 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-07-25 08:46:51,276 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:51,785 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:51,785 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101] total 101 [2018-07-25 08:46:51,785 INFO L451 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-07-25 08:46:51,785 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-07-25 08:46:51,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=10101, Unknown=0, NotChecked=0, Total=10302 [2018-07-25 08:46:51,786 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-07-25 08:46:52,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:52,591 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-07-25 08:46:52,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-07-25 08:46:52,591 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-07-25 08:46:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:52,592 INFO L225 Difference]: With dead ends: 207 [2018-07-25 08:46:52,592 INFO L226 Difference]: Without dead ends: 205 [2018-07-25 08:46:52,593 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 08:46:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-07-25 08:46:52,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-07-25 08:46:52,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-25 08:46:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-07-25 08:46:52,601 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-07-25 08:46:52,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:52,602 INFO L472 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-07-25 08:46:52,602 INFO L473 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-07-25 08:46:52,602 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-07-25 08:46:52,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-25 08:46:52,603 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:52,603 INFO L354 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-07-25 08:46:52,603 INFO L415 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:52,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-07-25 08:46:52,604 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:53,137 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:53,137 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102] total 102 [2018-07-25 08:46:53,137 INFO L451 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-07-25 08:46:53,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-07-25 08:46:53,138 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=10303, Unknown=0, NotChecked=0, Total=10506 [2018-07-25 08:46:53,139 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-07-25 08:46:53,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:53,951 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-07-25 08:46:53,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-07-25 08:46:53,951 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-07-25 08:46:53,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:53,952 INFO L225 Difference]: With dead ends: 209 [2018-07-25 08:46:53,952 INFO L226 Difference]: Without dead ends: 207 [2018-07-25 08:46:53,953 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 08:46:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-07-25 08:46:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-07-25 08:46:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-07-25 08:46:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-07-25 08:46:53,961 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-07-25 08:46:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:53,962 INFO L472 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-07-25 08:46:53,962 INFO L473 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-07-25 08:46:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-07-25 08:46:53,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-25 08:46:53,963 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:53,963 INFO L354 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-07-25 08:46:53,963 INFO L415 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:53,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-07-25 08:46:53,964 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:54,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:54,477 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103] total 103 [2018-07-25 08:46:54,477 INFO L451 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-07-25 08:46:54,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-07-25 08:46:54,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=10507, Unknown=0, NotChecked=0, Total=10712 [2018-07-25 08:46:54,479 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-07-25 08:46:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:55,298 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-07-25 08:46:55,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-07-25 08:46:55,298 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-07-25 08:46:55,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:55,299 INFO L225 Difference]: With dead ends: 211 [2018-07-25 08:46:55,299 INFO L226 Difference]: Without dead ends: 209 [2018-07-25 08:46:55,300 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 08:46:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-07-25 08:46:55,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-07-25 08:46:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-07-25 08:46:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-07-25 08:46:55,306 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-07-25 08:46:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:55,306 INFO L472 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-07-25 08:46:55,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-07-25 08:46:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-07-25 08:46:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-25 08:46:55,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:55,307 INFO L354 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-07-25 08:46:55,307 INFO L415 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:55,307 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-07-25 08:46:55,307 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:55,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:55,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104] total 104 [2018-07-25 08:46:55,899 INFO L451 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-07-25 08:46:55,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-07-25 08:46:55,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=10713, Unknown=0, NotChecked=0, Total=10920 [2018-07-25 08:46:55,900 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-07-25 08:46:56,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:56,718 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-07-25 08:46:56,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-07-25 08:46:56,718 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-07-25 08:46:56,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:56,719 INFO L225 Difference]: With dead ends: 213 [2018-07-25 08:46:56,719 INFO L226 Difference]: Without dead ends: 211 [2018-07-25 08:46:56,720 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 08:46:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-07-25 08:46:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-07-25 08:46:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-07-25 08:46:56,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-07-25 08:46:56,728 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-07-25 08:46:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:56,728 INFO L472 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-07-25 08:46:56,728 INFO L473 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-07-25 08:46:56,728 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-07-25 08:46:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-25 08:46:56,729 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:56,729 INFO L354 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-07-25 08:46:56,729 INFO L415 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:56,729 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-07-25 08:46:56,730 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:57,375 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:57,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105] total 105 [2018-07-25 08:46:57,376 INFO L451 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-07-25 08:46:57,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-07-25 08:46:57,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=10921, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:46:57,377 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-07-25 08:46:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:58,212 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-07-25 08:46:58,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-07-25 08:46:58,212 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-07-25 08:46:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:58,213 INFO L225 Difference]: With dead ends: 215 [2018-07-25 08:46:58,213 INFO L226 Difference]: Without dead ends: 213 [2018-07-25 08:46:58,214 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=10921, Unknown=0, NotChecked=0, Total=11130 [2018-07-25 08:46:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-25 08:46:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-07-25 08:46:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-07-25 08:46:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-07-25 08:46:58,223 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-07-25 08:46:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:58,224 INFO L472 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-07-25 08:46:58,224 INFO L473 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-07-25 08:46:58,224 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-07-25 08:46:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-25 08:46:58,225 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:58,225 INFO L354 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-07-25 08:46:58,225 INFO L415 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:58,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-07-25 08:46:58,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:58,963 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:58,963 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106] total 106 [2018-07-25 08:46:58,964 INFO L451 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-07-25 08:46:58,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-07-25 08:46:58,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:46:58,965 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-07-25 08:46:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:59,843 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-07-25 08:46:59,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-07-25 08:46:59,843 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-07-25 08:46:59,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:59,844 INFO L225 Difference]: With dead ends: 217 [2018-07-25 08:46:59,844 INFO L226 Difference]: Without dead ends: 215 [2018-07-25 08:46:59,846 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=11131, Unknown=0, NotChecked=0, Total=11342 [2018-07-25 08:46:59,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-07-25 08:46:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-07-25 08:46:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-07-25 08:46:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-07-25 08:46:59,854 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-07-25 08:46:59,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:59,854 INFO L472 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-07-25 08:46:59,854 INFO L473 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-07-25 08:46:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-07-25 08:46:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-25 08:46:59,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:59,856 INFO L354 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-07-25 08:46:59,856 INFO L415 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:59,856 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-07-25 08:46:59,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:00,420 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:00,420 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107] total 107 [2018-07-25 08:47:00,420 INFO L451 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-07-25 08:47:00,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-07-25 08:47:00,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=11343, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:47:00,421 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-07-25 08:47:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:01,316 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-07-25 08:47:01,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-07-25 08:47:01,317 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-07-25 08:47:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:01,317 INFO L225 Difference]: With dead ends: 219 [2018-07-25 08:47:01,318 INFO L226 Difference]: Without dead ends: 217 [2018-07-25 08:47:01,318 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=11343, Unknown=0, NotChecked=0, Total=11556 [2018-07-25 08:47:01,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-25 08:47:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-07-25 08:47:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-07-25 08:47:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-07-25 08:47:01,323 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-07-25 08:47:01,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:01,323 INFO L472 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-07-25 08:47:01,323 INFO L473 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-07-25 08:47:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-07-25 08:47:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-25 08:47:01,324 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:01,324 INFO L354 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-07-25 08:47:01,324 INFO L415 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:01,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-07-25 08:47:01,325 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:01,883 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:01,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108] total 108 [2018-07-25 08:47:01,883 INFO L451 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-07-25 08:47:01,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-07-25 08:47:01,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:47:01,884 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-07-25 08:47:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:02,766 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-07-25 08:47:02,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-07-25 08:47:02,767 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-07-25 08:47:02,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:02,767 INFO L225 Difference]: With dead ends: 221 [2018-07-25 08:47:02,767 INFO L226 Difference]: Without dead ends: 219 [2018-07-25 08:47:02,769 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=11557, Unknown=0, NotChecked=0, Total=11772 [2018-07-25 08:47:02,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-07-25 08:47:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-07-25 08:47:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-07-25 08:47:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-07-25 08:47:02,775 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-07-25 08:47:02,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:02,776 INFO L472 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-07-25 08:47:02,776 INFO L473 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-07-25 08:47:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-07-25 08:47:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-25 08:47:02,776 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:02,777 INFO L354 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-07-25 08:47:02,777 INFO L415 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:02,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-07-25 08:47:02,777 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:03,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:03,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109] total 109 [2018-07-25 08:47:03,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-07-25 08:47:03,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-07-25 08:47:03,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=11773, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:47:03,454 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-07-25 08:47:04,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:04,423 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-07-25 08:47:04,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-07-25 08:47:04,423 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-07-25 08:47:04,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:04,424 INFO L225 Difference]: With dead ends: 223 [2018-07-25 08:47:04,424 INFO L226 Difference]: Without dead ends: 221 [2018-07-25 08:47:04,426 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=11773, Unknown=0, NotChecked=0, Total=11990 [2018-07-25 08:47:04,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-07-25 08:47:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-07-25 08:47:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-07-25 08:47:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-07-25 08:47:04,437 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-07-25 08:47:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:04,437 INFO L472 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-07-25 08:47:04,437 INFO L473 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-07-25 08:47:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-07-25 08:47:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-07-25 08:47:04,439 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:04,439 INFO L354 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-07-25 08:47:04,439 INFO L415 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:04,439 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-07-25 08:47:04,440 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:05,208 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:05,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110] total 110 [2018-07-25 08:47:05,208 INFO L451 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-07-25 08:47:05,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-07-25 08:47:05,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:47:05,209 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-07-25 08:47:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:06,120 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-07-25 08:47:06,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-07-25 08:47:06,121 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-07-25 08:47:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:06,121 INFO L225 Difference]: With dead ends: 225 [2018-07-25 08:47:06,121 INFO L226 Difference]: Without dead ends: 223 [2018-07-25 08:47:06,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=11991, Unknown=0, NotChecked=0, Total=12210 [2018-07-25 08:47:06,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-07-25 08:47:06,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-07-25 08:47:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-07-25 08:47:06,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-07-25 08:47:06,130 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-07-25 08:47:06,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:06,131 INFO L472 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-07-25 08:47:06,131 INFO L473 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-07-25 08:47:06,131 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-07-25 08:47:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-25 08:47:06,132 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:06,132 INFO L354 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-07-25 08:47:06,132 INFO L415 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:06,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-07-25 08:47:06,132 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:06,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:06,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111] total 111 [2018-07-25 08:47:06,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-07-25 08:47:06,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-07-25 08:47:06,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=12211, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:47:06,782 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-07-25 08:47:07,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:07,736 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-07-25 08:47:07,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-07-25 08:47:07,736 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-07-25 08:47:07,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:07,737 INFO L225 Difference]: With dead ends: 227 [2018-07-25 08:47:07,737 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:47:07,738 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=12211, Unknown=0, NotChecked=0, Total=12432 [2018-07-25 08:47:07,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:47:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:47:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:47:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-07-25 08:47:07,746 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-07-25 08:47:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:07,747 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-07-25 08:47:07,747 INFO L473 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-07-25 08:47:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-07-25 08:47:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-25 08:47:07,748 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:07,748 INFO L354 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-07-25 08:47:07,748 INFO L415 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:07,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-07-25 08:47:07,749 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:08,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:08,757 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112] total 112 [2018-07-25 08:47:08,757 INFO L451 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-07-25 08:47:08,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-07-25 08:47:08,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=12433, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:47:08,758 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-07-25 08:47:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:09,708 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-07-25 08:47:09,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-07-25 08:47:09,708 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-07-25 08:47:09,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:09,708 INFO L225 Difference]: With dead ends: 229 [2018-07-25 08:47:09,708 INFO L226 Difference]: Without dead ends: 227 [2018-07-25 08:47:09,709 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=223, Invalid=12433, Unknown=0, NotChecked=0, Total=12656 [2018-07-25 08:47:09,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-07-25 08:47:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-07-25 08:47:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-07-25 08:47:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-07-25 08:47:09,715 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-07-25 08:47:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:09,715 INFO L472 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-07-25 08:47:09,715 INFO L473 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-07-25 08:47:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-07-25 08:47:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-25 08:47:09,716 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:09,716 INFO L354 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-07-25 08:47:09,716 INFO L415 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:09,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-07-25 08:47:09,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:10,340 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:10,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2018-07-25 08:47:10,341 INFO L451 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-07-25 08:47:10,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-07-25 08:47:10,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=12657, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:47:10,343 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-07-25 08:47:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:11,327 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-07-25 08:47:11,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-07-25 08:47:11,327 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-07-25 08:47:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:11,328 INFO L225 Difference]: With dead ends: 231 [2018-07-25 08:47:11,328 INFO L226 Difference]: Without dead ends: 229 [2018-07-25 08:47:11,329 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=12657, Unknown=0, NotChecked=0, Total=12882 [2018-07-25 08:47:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-07-25 08:47:11,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-07-25 08:47:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-07-25 08:47:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-07-25 08:47:11,338 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-07-25 08:47:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:11,338 INFO L472 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-07-25 08:47:11,338 INFO L473 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-07-25 08:47:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-07-25 08:47:11,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-25 08:47:11,339 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:11,339 INFO L354 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-07-25 08:47:11,339 INFO L415 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:11,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-07-25 08:47:11,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:12,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:12,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2018-07-25 08:47:12,070 INFO L451 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-07-25 08:47:12,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-07-25 08:47:12,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=12883, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:47:12,070 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-07-25 08:47:13,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:13,025 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-07-25 08:47:13,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-07-25 08:47:13,025 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-07-25 08:47:13,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:13,026 INFO L225 Difference]: With dead ends: 233 [2018-07-25 08:47:13,026 INFO L226 Difference]: Without dead ends: 231 [2018-07-25 08:47:13,026 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=12883, Unknown=0, NotChecked=0, Total=13110 [2018-07-25 08:47:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-07-25 08:47:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-07-25 08:47:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-07-25 08:47:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-07-25 08:47:13,035 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-07-25 08:47:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:13,035 INFO L472 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-07-25 08:47:13,035 INFO L473 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-07-25 08:47:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-07-25 08:47:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-25 08:47:13,036 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:13,036 INFO L354 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-07-25 08:47:13,037 INFO L415 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:13,037 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-07-25 08:47:13,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:13,712 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:13,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115] total 115 [2018-07-25 08:47:13,713 INFO L451 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-07-25 08:47:13,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-07-25 08:47:13,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=13111, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:47:13,714 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-07-25 08:47:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:14,710 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-07-25 08:47:14,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-25 08:47:14,710 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-07-25 08:47:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:14,710 INFO L225 Difference]: With dead ends: 235 [2018-07-25 08:47:14,710 INFO L226 Difference]: Without dead ends: 233 [2018-07-25 08:47:14,712 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=13111, Unknown=0, NotChecked=0, Total=13340 [2018-07-25 08:47:14,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-07-25 08:47:14,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-07-25 08:47:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-07-25 08:47:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-07-25 08:47:14,718 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-07-25 08:47:14,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:14,718 INFO L472 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-07-25 08:47:14,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-07-25 08:47:14,718 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-07-25 08:47:14,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-25 08:47:14,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:14,719 INFO L354 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-07-25 08:47:14,720 INFO L415 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:14,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-07-25 08:47:14,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:15,437 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:15,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116] total 116 [2018-07-25 08:47:15,437 INFO L451 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-07-25 08:47:15,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-07-25 08:47:15,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=13341, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:47:15,439 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-07-25 08:47:16,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:16,486 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-07-25 08:47:16,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-07-25 08:47:16,486 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-07-25 08:47:16,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:16,487 INFO L225 Difference]: With dead ends: 237 [2018-07-25 08:47:16,487 INFO L226 Difference]: Without dead ends: 235 [2018-07-25 08:47:16,488 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=13341, Unknown=0, NotChecked=0, Total=13572 [2018-07-25 08:47:16,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-07-25 08:47:16,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-07-25 08:47:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-07-25 08:47:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-07-25 08:47:16,493 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-07-25 08:47:16,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:16,493 INFO L472 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-07-25 08:47:16,493 INFO L473 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-07-25 08:47:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-07-25 08:47:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-25 08:47:16,494 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:16,494 INFO L354 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-07-25 08:47:16,494 INFO L415 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:16,495 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-07-25 08:47:16,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:17,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:17,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117] total 117 [2018-07-25 08:47:17,153 INFO L451 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-07-25 08:47:17,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-07-25 08:47:17,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=13573, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:47:17,154 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-07-25 08:47:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:18,202 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-07-25 08:47:18,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-07-25 08:47:18,203 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-07-25 08:47:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:18,203 INFO L225 Difference]: With dead ends: 239 [2018-07-25 08:47:18,203 INFO L226 Difference]: Without dead ends: 237 [2018-07-25 08:47:18,205 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=13573, Unknown=0, NotChecked=0, Total=13806 [2018-07-25 08:47:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-07-25 08:47:18,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-07-25 08:47:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-07-25 08:47:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-07-25 08:47:18,211 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-07-25 08:47:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:18,211 INFO L472 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-07-25 08:47:18,211 INFO L473 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-07-25 08:47:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-07-25 08:47:18,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-07-25 08:47:18,212 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:18,212 INFO L354 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-07-25 08:47:18,213 INFO L415 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:18,213 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-07-25 08:47:18,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:18,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:18,990 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118] total 118 [2018-07-25 08:47:18,991 INFO L451 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-07-25 08:47:18,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-07-25 08:47:18,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=13807, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:47:18,992 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-07-25 08:47:20,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:20,162 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-07-25 08:47:20,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-07-25 08:47:20,163 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-07-25 08:47:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:20,163 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:47:20,163 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:47:20,164 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=235, Invalid=13807, Unknown=0, NotChecked=0, Total=14042 [2018-07-25 08:47:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:47:20,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-07-25 08:47:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-07-25 08:47:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-07-25 08:47:20,173 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-07-25 08:47:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:20,173 INFO L472 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-07-25 08:47:20,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-07-25 08:47:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-07-25 08:47:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-25 08:47:20,174 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:20,174 INFO L354 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-07-25 08:47:20,175 INFO L415 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:20,175 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-07-25 08:47:20,175 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:21,012 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:21,012 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119] total 119 [2018-07-25 08:47:21,012 INFO L451 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-07-25 08:47:21,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-07-25 08:47:21,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=14043, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:47:21,014 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-07-25 08:47:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:22,200 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-07-25 08:47:22,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-07-25 08:47:22,200 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-07-25 08:47:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:22,201 INFO L225 Difference]: With dead ends: 243 [2018-07-25 08:47:22,201 INFO L226 Difference]: Without dead ends: 241 [2018-07-25 08:47:22,202 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=237, Invalid=14043, Unknown=0, NotChecked=0, Total=14280 [2018-07-25 08:47:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-07-25 08:47:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-07-25 08:47:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-07-25 08:47:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-07-25 08:47:22,211 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-07-25 08:47:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:22,211 INFO L472 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-07-25 08:47:22,211 INFO L473 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-07-25 08:47:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-07-25 08:47:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-25 08:47:22,212 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:22,212 INFO L354 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-07-25 08:47:22,212 INFO L415 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:22,213 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-07-25 08:47:22,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:23,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:23,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120] total 120 [2018-07-25 08:47:23,040 INFO L451 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-07-25 08:47:23,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-07-25 08:47:23,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=14281, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:47:23,041 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 121 states. [2018-07-25 08:47:24,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:24,243 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-07-25 08:47:24,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-07-25 08:47:24,243 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 240 [2018-07-25 08:47:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:24,244 INFO L225 Difference]: With dead ends: 245 [2018-07-25 08:47:24,244 INFO L226 Difference]: Without dead ends: 243 [2018-07-25 08:47:24,245 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=14281, Unknown=0, NotChecked=0, Total=14520 [2018-07-25 08:47:24,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-07-25 08:47:24,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-07-25 08:47:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-07-25 08:47:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-07-25 08:47:24,251 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-07-25 08:47:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:24,252 INFO L472 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-07-25 08:47:24,252 INFO L473 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-07-25 08:47:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-07-25 08:47:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-25 08:47:24,252 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:24,252 INFO L354 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-07-25 08:47:24,253 INFO L415 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:24,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1239446717, now seen corresponding path program 119 times [2018-07-25 08:47:24,253 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:25,069 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:25,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121] total 121 [2018-07-25 08:47:25,069 INFO L451 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-07-25 08:47:25,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-07-25 08:47:25,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=14521, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:47:25,070 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 122 states. [2018-07-25 08:47:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:26,187 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-07-25 08:47:26,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-07-25 08:47:26,187 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-07-25 08:47:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:26,188 INFO L225 Difference]: With dead ends: 247 [2018-07-25 08:47:26,188 INFO L226 Difference]: Without dead ends: 245 [2018-07-25 08:47:26,189 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=14521, Unknown=0, NotChecked=0, Total=14762 [2018-07-25 08:47:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-07-25 08:47:26,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-07-25 08:47:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-07-25 08:47:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-07-25 08:47:26,198 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-07-25 08:47:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:26,198 INFO L472 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-07-25 08:47:26,198 INFO L473 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-07-25 08:47:26,198 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-07-25 08:47:26,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-25 08:47:26,199 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:26,199 INFO L354 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-07-25 08:47:26,200 INFO L415 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:26,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1402406135, now seen corresponding path program 120 times [2018-07-25 08:47:26,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:26,923 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:26,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2018-07-25 08:47:26,923 INFO L451 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-07-25 08:47:26,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-07-25 08:47:26,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=14763, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:47:26,924 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 123 states. [2018-07-25 08:47:28,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:28,060 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-07-25 08:47:28,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-07-25 08:47:28,061 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 244 [2018-07-25 08:47:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:28,061 INFO L225 Difference]: With dead ends: 249 [2018-07-25 08:47:28,061 INFO L226 Difference]: Without dead ends: 247 [2018-07-25 08:47:28,062 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=243, Invalid=14763, Unknown=0, NotChecked=0, Total=15006 [2018-07-25 08:47:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-25 08:47:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-07-25 08:47:28,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-07-25 08:47:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-07-25 08:47:28,067 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-07-25 08:47:28,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:28,068 INFO L472 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-07-25 08:47:28,068 INFO L473 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-07-25 08:47:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-07-25 08:47:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-25 08:47:28,068 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:28,068 INFO L354 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-07-25 08:47:28,069 INFO L415 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:28,069 INFO L82 PathProgramCache]: Analyzing trace with hash -907383119, now seen corresponding path program 121 times [2018-07-25 08:47:28,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:28,815 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:28,815 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123] total 123 [2018-07-25 08:47:28,815 INFO L451 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-07-25 08:47:28,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-07-25 08:47:28,816 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=15007, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:47:28,816 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 124 states. [2018-07-25 08:47:29,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:29,963 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-07-25 08:47:29,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-07-25 08:47:29,963 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-07-25 08:47:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:29,964 INFO L225 Difference]: With dead ends: 251 [2018-07-25 08:47:29,964 INFO L226 Difference]: Without dead ends: 249 [2018-07-25 08:47:29,965 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=15007, Unknown=0, NotChecked=0, Total=15252 [2018-07-25 08:47:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-07-25 08:47:29,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-07-25 08:47:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-07-25 08:47:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-07-25 08:47:29,973 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-07-25 08:47:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:29,973 INFO L472 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-07-25 08:47:29,973 INFO L473 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-07-25 08:47:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-07-25 08:47:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-25 08:47:29,974 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:29,974 INFO L354 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-07-25 08:47:29,974 INFO L415 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:29,975 INFO L82 PathProgramCache]: Analyzing trace with hash -116764181, now seen corresponding path program 122 times [2018-07-25 08:47:29,975 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:30,965 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:30,965 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2018-07-25 08:47:30,965 INFO L451 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-07-25 08:47:30,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-07-25 08:47:30,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=15253, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:47:30,966 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 125 states. [2018-07-25 08:47:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:32,087 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-07-25 08:47:32,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-07-25 08:47:32,087 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 248 [2018-07-25 08:47:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:32,088 INFO L225 Difference]: With dead ends: 253 [2018-07-25 08:47:32,088 INFO L226 Difference]: Without dead ends: 251 [2018-07-25 08:47:32,089 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=15253, Unknown=0, NotChecked=0, Total=15500 [2018-07-25 08:47:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-07-25 08:47:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-07-25 08:47:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-07-25 08:47:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-07-25 08:47:32,095 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-07-25 08:47:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:32,095 INFO L472 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-07-25 08:47:32,095 INFO L473 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-07-25 08:47:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-07-25 08:47:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-25 08:47:32,096 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:32,096 INFO L354 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-07-25 08:47:32,096 INFO L415 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:32,096 INFO L82 PathProgramCache]: Analyzing trace with hash -541176155, now seen corresponding path program 123 times [2018-07-25 08:47:32,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:32,840 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:32,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125] total 125 [2018-07-25 08:47:32,840 INFO L451 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-07-25 08:47:32,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-07-25 08:47:32,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=15501, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:47:32,841 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 126 states. [2018-07-25 08:47:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:34,034 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-07-25 08:47:34,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-07-25 08:47:34,035 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-07-25 08:47:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:34,035 INFO L225 Difference]: With dead ends: 255 [2018-07-25 08:47:34,035 INFO L226 Difference]: Without dead ends: 253 [2018-07-25 08:47:34,036 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=15501, Unknown=0, NotChecked=0, Total=15750 [2018-07-25 08:47:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-07-25 08:47:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-07-25 08:47:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-07-25 08:47:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-07-25 08:47:34,042 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-07-25 08:47:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:34,043 INFO L472 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-07-25 08:47:34,043 INFO L473 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-07-25 08:47:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-07-25 08:47:34,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-07-25 08:47:34,044 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:34,044 INFO L354 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-07-25 08:47:34,044 INFO L415 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:34,044 INFO L82 PathProgramCache]: Analyzing trace with hash -379190049, now seen corresponding path program 124 times [2018-07-25 08:47:34,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:34,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:34,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126] total 126 [2018-07-25 08:47:34,838 INFO L451 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-07-25 08:47:34,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-07-25 08:47:34,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=15751, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:47:34,839 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 127 states. [2018-07-25 08:47:36,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:36,024 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-07-25 08:47:36,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-07-25 08:47:36,024 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 252 [2018-07-25 08:47:36,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:36,024 INFO L225 Difference]: With dead ends: 257 [2018-07-25 08:47:36,025 INFO L226 Difference]: Without dead ends: 255 [2018-07-25 08:47:36,025 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=251, Invalid=15751, Unknown=0, NotChecked=0, Total=16002 [2018-07-25 08:47:36,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-07-25 08:47:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-07-25 08:47:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-07-25 08:47:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-07-25 08:47:36,032 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-07-25 08:47:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:36,032 INFO L472 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-07-25 08:47:36,032 INFO L473 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-07-25 08:47:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-07-25 08:47:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-25 08:47:36,033 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:36,033 INFO L354 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-07-25 08:47:36,033 INFO L415 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:36,033 INFO L82 PathProgramCache]: Analyzing trace with hash 670635161, now seen corresponding path program 125 times [2018-07-25 08:47:36,033 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:36,800 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:36,800 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127] total 127 [2018-07-25 08:47:36,801 INFO L451 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-07-25 08:47:36,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-07-25 08:47:36,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=16003, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:47:36,802 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 128 states. [2018-07-25 08:47:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:38,035 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-07-25 08:47:38,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-07-25 08:47:38,035 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-07-25 08:47:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:38,035 INFO L225 Difference]: With dead ends: 259 [2018-07-25 08:47:38,036 INFO L226 Difference]: Without dead ends: 257 [2018-07-25 08:47:38,037 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=16003, Unknown=0, NotChecked=0, Total=16256 [2018-07-25 08:47:38,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-07-25 08:47:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-07-25 08:47:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-07-25 08:47:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-07-25 08:47:38,043 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-07-25 08:47:38,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:38,043 INFO L472 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-07-25 08:47:38,043 INFO L473 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-07-25 08:47:38,043 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-07-25 08:47:38,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-25 08:47:38,044 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:38,044 INFO L354 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-07-25 08:47:38,044 INFO L415 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:38,045 INFO L82 PathProgramCache]: Analyzing trace with hash 235347411, now seen corresponding path program 126 times [2018-07-25 08:47:38,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:38,874 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:38,874 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2018-07-25 08:47:38,875 INFO L451 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-07-25 08:47:38,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-07-25 08:47:38,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=16257, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:47:38,876 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 129 states. [2018-07-25 08:47:40,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:40,104 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-07-25 08:47:40,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-07-25 08:47:40,104 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 256 [2018-07-25 08:47:40,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:40,105 INFO L225 Difference]: With dead ends: 261 [2018-07-25 08:47:40,105 INFO L226 Difference]: Without dead ends: 259 [2018-07-25 08:47:40,106 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=16257, Unknown=0, NotChecked=0, Total=16512 [2018-07-25 08:47:40,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-07-25 08:47:40,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-07-25 08:47:40,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-07-25 08:47:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-07-25 08:47:40,113 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-07-25 08:47:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:40,113 INFO L472 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-07-25 08:47:40,113 INFO L473 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-07-25 08:47:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-07-25 08:47:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-25 08:47:40,114 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:40,114 INFO L354 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-07-25 08:47:40,114 INFO L415 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:40,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1464352627, now seen corresponding path program 127 times [2018-07-25 08:47:40,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:40,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:40,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129] total 129 [2018-07-25 08:47:40,951 INFO L451 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-07-25 08:47:40,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-07-25 08:47:40,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=16513, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:47:40,953 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 130 states. [2018-07-25 08:47:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:42,247 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-07-25 08:47:42,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-07-25 08:47:42,248 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-07-25 08:47:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:42,249 INFO L225 Difference]: With dead ends: 263 [2018-07-25 08:47:42,249 INFO L226 Difference]: Without dead ends: 261 [2018-07-25 08:47:42,250 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=16513, Unknown=0, NotChecked=0, Total=16770 [2018-07-25 08:47:42,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-07-25 08:47:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-07-25 08:47:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-07-25 08:47:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-07-25 08:47:42,259 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-07-25 08:47:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:42,259 INFO L472 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-07-25 08:47:42,259 INFO L473 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-07-25 08:47:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-07-25 08:47:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-25 08:47:42,260 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:42,261 INFO L354 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-07-25 08:47:42,261 INFO L415 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:42,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1506450631, now seen corresponding path program 128 times [2018-07-25 08:47:42,261 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:43,085 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:43,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130] total 130 [2018-07-25 08:47:43,086 INFO L451 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-07-25 08:47:43,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-07-25 08:47:43,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=16771, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:47:43,088 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 131 states. [2018-07-25 08:47:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:44,382 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-07-25 08:47:44,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-07-25 08:47:44,383 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 260 [2018-07-25 08:47:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:44,383 INFO L225 Difference]: With dead ends: 265 [2018-07-25 08:47:44,383 INFO L226 Difference]: Without dead ends: 263 [2018-07-25 08:47:44,385 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=259, Invalid=16771, Unknown=0, NotChecked=0, Total=17030 [2018-07-25 08:47:44,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-07-25 08:47:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-07-25 08:47:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-07-25 08:47:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-07-25 08:47:44,392 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-07-25 08:47:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:44,392 INFO L472 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-07-25 08:47:44,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-07-25 08:47:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-07-25 08:47:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-07-25 08:47:44,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:44,393 INFO L354 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-07-25 08:47:44,394 INFO L415 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:44,394 INFO L82 PathProgramCache]: Analyzing trace with hash 295129729, now seen corresponding path program 129 times [2018-07-25 08:47:44,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:45,265 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:45,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131] total 131 [2018-07-25 08:47:45,266 INFO L451 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-07-25 08:47:45,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-07-25 08:47:45,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=17031, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:47:45,267 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 132 states. [2018-07-25 08:47:46,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:46,548 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-07-25 08:47:46,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-07-25 08:47:46,548 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-07-25 08:47:46,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:46,549 INFO L225 Difference]: With dead ends: 267 [2018-07-25 08:47:46,549 INFO L226 Difference]: Without dead ends: 265 [2018-07-25 08:47:46,550 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=261, Invalid=17031, Unknown=0, NotChecked=0, Total=17292 [2018-07-25 08:47:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-07-25 08:47:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-07-25 08:47:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-07-25 08:47:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-07-25 08:47:46,559 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-07-25 08:47:46,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:46,560 INFO L472 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-07-25 08:47:46,560 INFO L473 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-07-25 08:47:46,560 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-07-25 08:47:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-25 08:47:46,561 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:46,561 INFO L354 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-07-25 08:47:46,561 INFO L415 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:46,561 INFO L82 PathProgramCache]: Analyzing trace with hash 151880123, now seen corresponding path program 130 times [2018-07-25 08:47:46,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:47,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:47,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132] total 132 [2018-07-25 08:47:47,433 INFO L451 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-07-25 08:47:47,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-07-25 08:47:47,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=17293, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:47:47,434 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 133 states. [2018-07-25 08:47:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:48,793 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-07-25 08:47:48,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-07-25 08:47:48,793 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 264 [2018-07-25 08:47:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:48,794 INFO L225 Difference]: With dead ends: 269 [2018-07-25 08:47:48,794 INFO L226 Difference]: Without dead ends: 267 [2018-07-25 08:47:48,794 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=17293, Unknown=0, NotChecked=0, Total=17556 [2018-07-25 08:47:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-07-25 08:47:48,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-07-25 08:47:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-07-25 08:47:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-07-25 08:47:48,800 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-07-25 08:47:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:48,800 INFO L472 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-07-25 08:47:48,800 INFO L473 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-07-25 08:47:48,801 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-07-25 08:47:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-25 08:47:48,801 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:48,801 INFO L354 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-07-25 08:47:48,801 INFO L415 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:48,802 INFO L82 PathProgramCache]: Analyzing trace with hash -72037771, now seen corresponding path program 131 times [2018-07-25 08:47:48,802 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:49,671 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:49,671 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:49,671 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133] total 133 [2018-07-25 08:47:49,671 INFO L451 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-07-25 08:47:49,672 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-07-25 08:47:49,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=17557, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:47:49,673 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 134 states. [2018-07-25 08:47:51,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:51,017 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-07-25 08:47:51,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-25 08:47:51,017 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-07-25 08:47:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:51,018 INFO L225 Difference]: With dead ends: 271 [2018-07-25 08:47:51,018 INFO L226 Difference]: Without dead ends: 269 [2018-07-25 08:47:51,019 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=17557, Unknown=0, NotChecked=0, Total=17822 [2018-07-25 08:47:51,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-07-25 08:47:51,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-07-25 08:47:51,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-07-25 08:47:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-07-25 08:47:51,025 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-07-25 08:47:51,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:51,025 INFO L472 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-07-25 08:47:51,025 INFO L473 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-07-25 08:47:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-07-25 08:47:51,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-25 08:47:51,026 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:51,026 INFO L354 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-07-25 08:47:51,026 INFO L415 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:51,026 INFO L82 PathProgramCache]: Analyzing trace with hash -508769105, now seen corresponding path program 132 times [2018-07-25 08:47:51,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:51,913 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:51,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134] total 134 [2018-07-25 08:47:51,913 INFO L451 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-07-25 08:47:51,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-07-25 08:47:51,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=17823, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:47:51,914 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 135 states. [2018-07-25 08:47:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:53,259 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-07-25 08:47:53,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-07-25 08:47:53,259 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 268 [2018-07-25 08:47:53,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:53,260 INFO L225 Difference]: With dead ends: 273 [2018-07-25 08:47:53,260 INFO L226 Difference]: Without dead ends: 271 [2018-07-25 08:47:53,261 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=17823, Unknown=0, NotChecked=0, Total=18090 [2018-07-25 08:47:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-07-25 08:47:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-07-25 08:47:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-07-25 08:47:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-07-25 08:47:53,267 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-07-25 08:47:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:53,267 INFO L472 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-07-25 08:47:53,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-07-25 08:47:53,267 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-07-25 08:47:53,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-25 08:47:53,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:53,268 INFO L354 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-07-25 08:47:53,268 INFO L415 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:53,268 INFO L82 PathProgramCache]: Analyzing trace with hash 699213929, now seen corresponding path program 133 times [2018-07-25 08:47:53,268 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:54,164 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:54,164 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:54,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135] total 135 [2018-07-25 08:47:54,165 INFO L451 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-07-25 08:47:54,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-07-25 08:47:54,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=18091, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:47:54,166 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 136 states. [2018-07-25 08:47:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:55,555 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-07-25 08:47:55,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-07-25 08:47:55,556 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-07-25 08:47:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:55,556 INFO L225 Difference]: With dead ends: 275 [2018-07-25 08:47:55,556 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:47:55,558 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=18091, Unknown=0, NotChecked=0, Total=18360 [2018-07-25 08:47:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:47:55,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:47:55,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:47:55,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-07-25 08:47:55,564 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-07-25 08:47:55,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:55,564 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-07-25 08:47:55,564 INFO L473 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-07-25 08:47:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-07-25 08:47:55,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-25 08:47:55,565 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:55,565 INFO L354 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-07-25 08:47:55,565 INFO L415 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:55,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1929739683, now seen corresponding path program 134 times [2018-07-25 08:47:55,565 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:56,631 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:56,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136] total 136 [2018-07-25 08:47:56,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-07-25 08:47:56,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-07-25 08:47:56,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=18361, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:47:56,633 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 137 states. [2018-07-25 08:47:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:47:58,026 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-07-25 08:47:58,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-07-25 08:47:58,026 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 272 [2018-07-25 08:47:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:47:58,027 INFO L225 Difference]: With dead ends: 277 [2018-07-25 08:47:58,027 INFO L226 Difference]: Without dead ends: 275 [2018-07-25 08:47:58,029 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=271, Invalid=18361, Unknown=0, NotChecked=0, Total=18632 [2018-07-25 08:47:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-07-25 08:47:58,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-07-25 08:47:58,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-07-25 08:47:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-07-25 08:47:58,040 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-07-25 08:47:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:47:58,040 INFO L472 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-07-25 08:47:58,040 INFO L473 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-07-25 08:47:58,040 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-07-25 08:47:58,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-25 08:47:58,041 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:47:58,041 INFO L354 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-07-25 08:47:58,041 INFO L415 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:47:58,042 INFO L82 PathProgramCache]: Analyzing trace with hash -945984419, now seen corresponding path program 135 times [2018-07-25 08:47:58,042 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:47:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:47:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:47:59,027 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:47:59,027 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137] total 137 [2018-07-25 08:47:59,027 INFO L451 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-07-25 08:47:59,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-07-25 08:47:59,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=18633, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:47:59,028 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 138 states. [2018-07-25 08:48:00,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:00,445 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-07-25 08:48:00,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-07-25 08:48:00,445 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-07-25 08:48:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:00,446 INFO L225 Difference]: With dead ends: 279 [2018-07-25 08:48:00,446 INFO L226 Difference]: Without dead ends: 277 [2018-07-25 08:48:00,447 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=273, Invalid=18633, Unknown=0, NotChecked=0, Total=18906 [2018-07-25 08:48:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-07-25 08:48:00,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-07-25 08:48:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-07-25 08:48:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-07-25 08:48:00,453 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-07-25 08:48:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:00,453 INFO L472 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-07-25 08:48:00,453 INFO L473 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-07-25 08:48:00,453 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-07-25 08:48:00,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-25 08:48:00,454 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:00,455 INFO L354 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-07-25 08:48:00,455 INFO L415 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:00,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1442092183, now seen corresponding path program 136 times [2018-07-25 08:48:00,455 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:01,378 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:01,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138] total 138 [2018-07-25 08:48:01,379 INFO L451 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-07-25 08:48:01,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-07-25 08:48:01,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=18907, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:48:01,381 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 139 states. [2018-07-25 08:48:02,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:02,886 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-07-25 08:48:02,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-07-25 08:48:02,886 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 276 [2018-07-25 08:48:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:02,887 INFO L225 Difference]: With dead ends: 281 [2018-07-25 08:48:02,887 INFO L226 Difference]: Without dead ends: 279 [2018-07-25 08:48:02,889 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=275, Invalid=18907, Unknown=0, NotChecked=0, Total=19182 [2018-07-25 08:48:02,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-25 08:48:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-07-25 08:48:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-07-25 08:48:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-07-25 08:48:02,896 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-07-25 08:48:02,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:02,896 INFO L472 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-07-25 08:48:02,896 INFO L473 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-07-25 08:48:02,896 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-07-25 08:48:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-25 08:48:02,897 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:02,897 INFO L354 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-07-25 08:48:02,897 INFO L415 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:02,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1423796655, now seen corresponding path program 137 times [2018-07-25 08:48:02,897 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:03,931 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:03,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139] total 139 [2018-07-25 08:48:03,931 INFO L451 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-07-25 08:48:03,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-07-25 08:48:03,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=19183, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:48:03,934 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 140 states. [2018-07-25 08:48:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:05,423 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-07-25 08:48:05,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-07-25 08:48:05,423 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-07-25 08:48:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:05,424 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:48:05,424 INFO L226 Difference]: Without dead ends: 281 [2018-07-25 08:48:05,425 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=19183, Unknown=0, NotChecked=0, Total=19460 [2018-07-25 08:48:05,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-07-25 08:48:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-07-25 08:48:05,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-07-25 08:48:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-07-25 08:48:05,431 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-07-25 08:48:05,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:05,431 INFO L472 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-07-25 08:48:05,432 INFO L473 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-07-25 08:48:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-07-25 08:48:05,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-07-25 08:48:05,432 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:05,432 INFO L354 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-07-25 08:48:05,433 INFO L415 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:05,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1826034059, now seen corresponding path program 138 times [2018-07-25 08:48:05,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:06,382 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:06,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140] total 140 [2018-07-25 08:48:06,383 INFO L451 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-07-25 08:48:06,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-07-25 08:48:06,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=19461, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:48:06,384 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 141 states. [2018-07-25 08:48:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:07,858 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-07-25 08:48:07,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-07-25 08:48:07,858 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 280 [2018-07-25 08:48:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:07,858 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:48:07,859 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:48:07,859 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=279, Invalid=19461, Unknown=0, NotChecked=0, Total=19740 [2018-07-25 08:48:07,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:48:07,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-07-25 08:48:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-07-25 08:48:07,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-07-25 08:48:07,865 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-07-25 08:48:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:07,866 INFO L472 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-07-25 08:48:07,866 INFO L473 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-07-25 08:48:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-07-25 08:48:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-25 08:48:07,866 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:07,867 INFO L354 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-07-25 08:48:07,867 INFO L415 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:07,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1822841275, now seen corresponding path program 139 times [2018-07-25 08:48:07,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:08,844 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:08,844 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141] total 141 [2018-07-25 08:48:08,845 INFO L451 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-07-25 08:48:08,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-07-25 08:48:08,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=19741, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:48:08,846 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 142 states. [2018-07-25 08:48:10,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:10,403 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-07-25 08:48:10,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-07-25 08:48:10,403 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-07-25 08:48:10,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:10,404 INFO L225 Difference]: With dead ends: 287 [2018-07-25 08:48:10,404 INFO L226 Difference]: Without dead ends: 285 [2018-07-25 08:48:10,405 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=281, Invalid=19741, Unknown=0, NotChecked=0, Total=20022 [2018-07-25 08:48:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-07-25 08:48:10,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-07-25 08:48:10,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-07-25 08:48:10,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-07-25 08:48:10,411 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-07-25 08:48:10,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:10,411 INFO L472 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-07-25 08:48:10,411 INFO L473 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-07-25 08:48:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-07-25 08:48:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-25 08:48:10,412 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:10,412 INFO L354 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-07-25 08:48:10,412 INFO L415 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:10,412 INFO L82 PathProgramCache]: Analyzing trace with hash 596243583, now seen corresponding path program 140 times [2018-07-25 08:48:10,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:11,416 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:11,416 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142] total 142 [2018-07-25 08:48:11,416 INFO L451 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-07-25 08:48:11,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-07-25 08:48:11,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=20023, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:48:11,418 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 143 states. [2018-07-25 08:48:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:13,017 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-07-25 08:48:13,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-07-25 08:48:13,017 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 284 [2018-07-25 08:48:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:13,018 INFO L225 Difference]: With dead ends: 289 [2018-07-25 08:48:13,018 INFO L226 Difference]: Without dead ends: 287 [2018-07-25 08:48:13,020 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=283, Invalid=20023, Unknown=0, NotChecked=0, Total=20306 [2018-07-25 08:48:13,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-07-25 08:48:13,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-07-25 08:48:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:48:13,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-07-25 08:48:13,027 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-07-25 08:48:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:13,027 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-07-25 08:48:13,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-07-25 08:48:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-07-25 08:48:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-07-25 08:48:13,028 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:13,028 INFO L354 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-07-25 08:48:13,028 INFO L415 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:13,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1759484985, now seen corresponding path program 141 times [2018-07-25 08:48:13,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:14,123 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:14,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143] total 143 [2018-07-25 08:48:14,124 INFO L451 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-07-25 08:48:14,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-07-25 08:48:14,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=20307, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:48:14,125 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 144 states. [2018-07-25 08:48:15,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:15,675 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-07-25 08:48:15,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-07-25 08:48:15,676 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-07-25 08:48:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:15,676 INFO L225 Difference]: With dead ends: 291 [2018-07-25 08:48:15,676 INFO L226 Difference]: Without dead ends: 289 [2018-07-25 08:48:15,677 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=285, Invalid=20307, Unknown=0, NotChecked=0, Total=20592 [2018-07-25 08:48:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-07-25 08:48:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-07-25 08:48:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-25 08:48:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-07-25 08:48:15,684 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-07-25 08:48:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:15,684 INFO L472 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-07-25 08:48:15,684 INFO L473 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-07-25 08:48:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-07-25 08:48:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-25 08:48:15,685 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:15,685 INFO L354 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-07-25 08:48:15,685 INFO L415 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:15,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1351991949, now seen corresponding path program 142 times [2018-07-25 08:48:15,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:17,170 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:17,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144] total 144 [2018-07-25 08:48:17,170 INFO L451 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-07-25 08:48:17,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-07-25 08:48:17,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=20593, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:48:17,172 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 145 states. [2018-07-25 08:48:18,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:18,796 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-07-25 08:48:18,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-07-25 08:48:18,796 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 288 [2018-07-25 08:48:18,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:18,797 INFO L225 Difference]: With dead ends: 293 [2018-07-25 08:48:18,797 INFO L226 Difference]: Without dead ends: 291 [2018-07-25 08:48:18,798 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=20593, Unknown=0, NotChecked=0, Total=20880 [2018-07-25 08:48:18,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-07-25 08:48:18,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-07-25 08:48:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-07-25 08:48:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-07-25 08:48:18,809 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-07-25 08:48:18,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:18,809 INFO L472 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-07-25 08:48:18,809 INFO L473 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-07-25 08:48:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-07-25 08:48:18,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-25 08:48:18,811 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:18,811 INFO L354 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-07-25 08:48:18,811 INFO L415 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:18,811 INFO L82 PathProgramCache]: Analyzing trace with hash 2110879789, now seen corresponding path program 143 times [2018-07-25 08:48:18,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:20,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:20,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145] total 145 [2018-07-25 08:48:20,004 INFO L451 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-07-25 08:48:20,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-07-25 08:48:20,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=20881, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:48:20,005 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 146 states. [2018-07-25 08:48:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:21,670 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-07-25 08:48:21,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-07-25 08:48:21,670 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-07-25 08:48:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:21,671 INFO L225 Difference]: With dead ends: 295 [2018-07-25 08:48:21,671 INFO L226 Difference]: Without dead ends: 293 [2018-07-25 08:48:21,672 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=289, Invalid=20881, Unknown=0, NotChecked=0, Total=21170 [2018-07-25 08:48:21,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-07-25 08:48:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-07-25 08:48:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-07-25 08:48:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-07-25 08:48:21,679 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-07-25 08:48:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:21,679 INFO L472 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-07-25 08:48:21,679 INFO L473 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-07-25 08:48:21,679 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-07-25 08:48:21,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-25 08:48:21,680 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:21,680 INFO L354 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-07-25 08:48:21,680 INFO L415 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:21,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965607, now seen corresponding path program 144 times [2018-07-25 08:48:21,681 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:22,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:22,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146] total 146 [2018-07-25 08:48:22,833 INFO L451 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-07-25 08:48:22,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-07-25 08:48:22,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=21171, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:48:22,834 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 147 states. [2018-07-25 08:48:24,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:24,518 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-07-25 08:48:24,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-07-25 08:48:24,518 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 292 [2018-07-25 08:48:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:24,519 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:48:24,519 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:48:24,520 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=291, Invalid=21171, Unknown=0, NotChecked=0, Total=21462 [2018-07-25 08:48:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:48:24,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-07-25 08:48:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-07-25 08:48:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-07-25 08:48:24,527 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-07-25 08:48:24,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:24,528 INFO L472 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-07-25 08:48:24,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-07-25 08:48:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-07-25 08:48:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-25 08:48:24,528 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:24,528 INFO L354 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-07-25 08:48:24,529 INFO L415 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:24,529 INFO L82 PathProgramCache]: Analyzing trace with hash -842253791, now seen corresponding path program 145 times [2018-07-25 08:48:24,529 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:25,719 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:25,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147] total 147 [2018-07-25 08:48:25,719 INFO L451 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-07-25 08:48:25,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-07-25 08:48:25,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=21463, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:48:25,720 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 148 states. [2018-07-25 08:48:27,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:27,401 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-07-25 08:48:27,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-07-25 08:48:27,401 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-07-25 08:48:27,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:27,402 INFO L225 Difference]: With dead ends: 299 [2018-07-25 08:48:27,402 INFO L226 Difference]: Without dead ends: 297 [2018-07-25 08:48:27,403 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=293, Invalid=21463, Unknown=0, NotChecked=0, Total=21756 [2018-07-25 08:48:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-07-25 08:48:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-07-25 08:48:27,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-07-25 08:48:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-07-25 08:48:27,410 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-07-25 08:48:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:27,410 INFO L472 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-07-25 08:48:27,410 INFO L473 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-07-25 08:48:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-07-25 08:48:27,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-25 08:48:27,411 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:27,411 INFO L354 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-07-25 08:48:27,412 INFO L415 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:27,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1951989413, now seen corresponding path program 146 times [2018-07-25 08:48:27,412 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:28,548 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:28,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148] total 148 [2018-07-25 08:48:28,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-07-25 08:48:28,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-07-25 08:48:28,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=21757, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:48:28,550 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 149 states. [2018-07-25 08:48:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:30,279 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-07-25 08:48:30,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-07-25 08:48:30,279 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 296 [2018-07-25 08:48:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:30,280 INFO L225 Difference]: With dead ends: 301 [2018-07-25 08:48:30,280 INFO L226 Difference]: Without dead ends: 299 [2018-07-25 08:48:30,281 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=295, Invalid=21757, Unknown=0, NotChecked=0, Total=22052 [2018-07-25 08:48:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-07-25 08:48:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-07-25 08:48:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-07-25 08:48:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-07-25 08:48:30,292 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-07-25 08:48:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:30,293 INFO L472 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-07-25 08:48:30,293 INFO L473 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-07-25 08:48:30,293 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-07-25 08:48:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-25 08:48:30,294 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:30,294 INFO L354 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-07-25 08:48:30,295 INFO L415 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1038934549, now seen corresponding path program 147 times [2018-07-25 08:48:30,295 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:31,505 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:31,505 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149] total 149 [2018-07-25 08:48:31,506 INFO L451 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-07-25 08:48:31,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-07-25 08:48:31,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=22053, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:48:31,508 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 150 states. [2018-07-25 08:48:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:33,321 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-07-25 08:48:33,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-07-25 08:48:33,321 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-07-25 08:48:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:33,322 INFO L225 Difference]: With dead ends: 303 [2018-07-25 08:48:33,322 INFO L226 Difference]: Without dead ends: 301 [2018-07-25 08:48:33,323 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=297, Invalid=22053, Unknown=0, NotChecked=0, Total=22350 [2018-07-25 08:48:33,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-07-25 08:48:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-07-25 08:48:33,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:48:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-07-25 08:48:33,335 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-07-25 08:48:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:33,335 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-07-25 08:48:33,335 INFO L473 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-07-25 08:48:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-07-25 08:48:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-25 08:48:33,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:33,337 INFO L354 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-07-25 08:48:33,337 INFO L415 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:33,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1983741007, now seen corresponding path program 148 times [2018-07-25 08:48:33,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:34,677 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:34,677 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150] total 150 [2018-07-25 08:48:34,677 INFO L451 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-07-25 08:48:34,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-07-25 08:48:34,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=22351, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:48:34,679 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 151 states. [2018-07-25 08:48:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:36,532 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-07-25 08:48:36,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-07-25 08:48:36,533 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 300 [2018-07-25 08:48:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:36,533 INFO L225 Difference]: With dead ends: 305 [2018-07-25 08:48:36,534 INFO L226 Difference]: Without dead ends: 303 [2018-07-25 08:48:36,536 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=299, Invalid=22351, Unknown=0, NotChecked=0, Total=22650 [2018-07-25 08:48:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-07-25 08:48:36,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-07-25 08:48:36,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:48:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-07-25 08:48:36,543 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-07-25 08:48:36,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:36,544 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-07-25 08:48:36,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-07-25 08:48:36,544 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-07-25 08:48:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-25 08:48:36,545 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:36,545 INFO L354 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-07-25 08:48:36,545 INFO L415 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:36,545 INFO L82 PathProgramCache]: Analyzing trace with hash -590319607, now seen corresponding path program 149 times [2018-07-25 08:48:36,545 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:37,763 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:37,763 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151] total 151 [2018-07-25 08:48:37,764 INFO L451 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-07-25 08:48:37,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-07-25 08:48:37,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=22651, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:48:37,766 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 152 states. [2018-07-25 08:48:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:39,528 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-07-25 08:48:39,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-07-25 08:48:39,529 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-07-25 08:48:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:39,529 INFO L225 Difference]: With dead ends: 307 [2018-07-25 08:48:39,529 INFO L226 Difference]: Without dead ends: 305 [2018-07-25 08:48:39,531 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=301, Invalid=22651, Unknown=0, NotChecked=0, Total=22952 [2018-07-25 08:48:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-07-25 08:48:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-07-25 08:48:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-07-25 08:48:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-07-25 08:48:39,538 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-07-25 08:48:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:39,538 INFO L472 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-07-25 08:48:39,538 INFO L473 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-07-25 08:48:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-07-25 08:48:39,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-25 08:48:39,539 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:39,539 INFO L354 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-07-25 08:48:39,539 INFO L415 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:39,539 INFO L82 PathProgramCache]: Analyzing trace with hash -361407165, now seen corresponding path program 150 times [2018-07-25 08:48:39,539 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:40,740 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:40,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152] total 152 [2018-07-25 08:48:40,740 INFO L451 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-07-25 08:48:40,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-07-25 08:48:40,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=22953, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:48:40,741 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 153 states. [2018-07-25 08:48:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:42,511 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-07-25 08:48:42,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-07-25 08:48:42,511 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 304 [2018-07-25 08:48:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:42,512 INFO L225 Difference]: With dead ends: 309 [2018-07-25 08:48:42,512 INFO L226 Difference]: Without dead ends: 307 [2018-07-25 08:48:42,513 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=303, Invalid=22953, Unknown=0, NotChecked=0, Total=23256 [2018-07-25 08:48:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-07-25 08:48:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-07-25 08:48:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-07-25 08:48:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-07-25 08:48:42,519 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-07-25 08:48:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:42,520 INFO L472 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-07-25 08:48:42,520 INFO L473 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-07-25 08:48:42,520 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-07-25 08:48:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-25 08:48:42,520 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:42,521 INFO L354 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-07-25 08:48:42,521 INFO L415 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:42,521 INFO L82 PathProgramCache]: Analyzing trace with hash 580117501, now seen corresponding path program 151 times [2018-07-25 08:48:42,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:43,693 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:43,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153] total 153 [2018-07-25 08:48:43,694 INFO L451 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-07-25 08:48:43,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-07-25 08:48:43,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=23257, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:48:43,695 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 154 states. [2018-07-25 08:48:45,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:45,519 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-07-25 08:48:45,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-07-25 08:48:45,519 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-07-25 08:48:45,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:45,520 INFO L225 Difference]: With dead ends: 311 [2018-07-25 08:48:45,520 INFO L226 Difference]: Without dead ends: 309 [2018-07-25 08:48:45,522 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=305, Invalid=23257, Unknown=0, NotChecked=0, Total=23562 [2018-07-25 08:48:45,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-07-25 08:48:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-07-25 08:48:45,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-07-25 08:48:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-07-25 08:48:45,533 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-07-25 08:48:45,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:45,534 INFO L472 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-07-25 08:48:45,534 INFO L473 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-07-25 08:48:45,534 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-07-25 08:48:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-25 08:48:45,535 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:45,535 INFO L354 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-07-25 08:48:45,536 INFO L415 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:45,536 INFO L82 PathProgramCache]: Analyzing trace with hash -852777929, now seen corresponding path program 152 times [2018-07-25 08:48:45,536 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:46,832 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:46,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154] total 154 [2018-07-25 08:48:46,833 INFO L451 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-07-25 08:48:46,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-07-25 08:48:46,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=23563, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:48:46,835 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 155 states. [2018-07-25 08:48:48,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:48,715 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-07-25 08:48:48,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-07-25 08:48:48,715 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 308 [2018-07-25 08:48:48,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:48,716 INFO L225 Difference]: With dead ends: 313 [2018-07-25 08:48:48,716 INFO L226 Difference]: Without dead ends: 311 [2018-07-25 08:48:48,717 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=307, Invalid=23563, Unknown=0, NotChecked=0, Total=23870 [2018-07-25 08:48:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-07-25 08:48:48,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-07-25 08:48:48,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-07-25 08:48:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-07-25 08:48:48,724 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-07-25 08:48:48,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:48,724 INFO L472 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-07-25 08:48:48,724 INFO L473 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-07-25 08:48:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-07-25 08:48:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-07-25 08:48:48,725 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:48,725 INFO L354 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-07-25 08:48:48,725 INFO L415 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:48,725 INFO L82 PathProgramCache]: Analyzing trace with hash 819215857, now seen corresponding path program 153 times [2018-07-25 08:48:48,725 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:49,934 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:49,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155] total 155 [2018-07-25 08:48:49,934 INFO L451 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-07-25 08:48:49,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-07-25 08:48:49,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=23871, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:48:49,936 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 156 states. [2018-07-25 08:48:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:51,838 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-07-25 08:48:51,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-07-25 08:48:51,838 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-07-25 08:48:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:51,838 INFO L225 Difference]: With dead ends: 315 [2018-07-25 08:48:51,838 INFO L226 Difference]: Without dead ends: 313 [2018-07-25 08:48:51,840 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=309, Invalid=23871, Unknown=0, NotChecked=0, Total=24180 [2018-07-25 08:48:51,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-07-25 08:48:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-07-25 08:48:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-07-25 08:48:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-07-25 08:48:51,847 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-07-25 08:48:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:51,847 INFO L472 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-07-25 08:48:51,847 INFO L473 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-07-25 08:48:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-07-25 08:48:51,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-07-25 08:48:51,848 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:51,848 INFO L354 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-07-25 08:48:51,848 INFO L415 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:51,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1287475499, now seen corresponding path program 154 times [2018-07-25 08:48:51,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:53,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:53,091 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156] total 156 [2018-07-25 08:48:53,092 INFO L451 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-07-25 08:48:53,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-07-25 08:48:53,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=24181, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:48:53,094 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 157 states. [2018-07-25 08:48:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:55,005 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-07-25 08:48:55,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-25 08:48:55,005 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 312 [2018-07-25 08:48:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:55,006 INFO L225 Difference]: With dead ends: 317 [2018-07-25 08:48:55,006 INFO L226 Difference]: Without dead ends: 315 [2018-07-25 08:48:55,007 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=24181, Unknown=0, NotChecked=0, Total=24492 [2018-07-25 08:48:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-07-25 08:48:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-07-25 08:48:55,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-07-25 08:48:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-07-25 08:48:55,019 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-07-25 08:48:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:55,019 INFO L472 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-07-25 08:48:55,019 INFO L473 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-07-25 08:48:55,020 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-07-25 08:48:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-25 08:48:55,021 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:55,021 INFO L354 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-07-25 08:48:55,021 INFO L415 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:55,021 INFO L82 PathProgramCache]: Analyzing trace with hash 313425381, now seen corresponding path program 155 times [2018-07-25 08:48:55,021 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:56,574 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:56,574 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157] total 157 [2018-07-25 08:48:56,575 INFO L451 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-07-25 08:48:56,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-07-25 08:48:56,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=24493, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:48:56,576 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 158 states. [2018-07-25 08:48:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:48:58,479 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-07-25 08:48:58,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-07-25 08:48:58,480 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-07-25 08:48:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:48:58,480 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:48:58,480 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:48:58,482 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=313, Invalid=24493, Unknown=0, NotChecked=0, Total=24806 [2018-07-25 08:48:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:48:58,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-07-25 08:48:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-07-25 08:48:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-07-25 08:48:58,489 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-07-25 08:48:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:48:58,489 INFO L472 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-07-25 08:48:58,489 INFO L473 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-07-25 08:48:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-07-25 08:48:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-25 08:48:58,490 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:48:58,490 INFO L354 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-07-25 08:48:58,490 INFO L415 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:48:58,490 INFO L82 PathProgramCache]: Analyzing trace with hash 554132511, now seen corresponding path program 156 times [2018-07-25 08:48:58,490 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:48:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:48:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:48:59,740 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:48:59,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158] total 158 [2018-07-25 08:48:59,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-07-25 08:48:59,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-07-25 08:48:59,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=24807, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:48:59,742 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 159 states. [2018-07-25 08:49:01,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:01,645 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-07-25 08:49:01,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-07-25 08:49:01,646 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 316 [2018-07-25 08:49:01,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:01,646 INFO L225 Difference]: With dead ends: 321 [2018-07-25 08:49:01,646 INFO L226 Difference]: Without dead ends: 319 [2018-07-25 08:49:01,647 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=315, Invalid=24807, Unknown=0, NotChecked=0, Total=25122 [2018-07-25 08:49:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-07-25 08:49:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-07-25 08:49:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-07-25 08:49:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-07-25 08:49:01,654 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-07-25 08:49:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:01,655 INFO L472 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-07-25 08:49:01,655 INFO L473 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-07-25 08:49:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-07-25 08:49:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-25 08:49:01,656 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:01,656 INFO L354 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-07-25 08:49:01,656 INFO L415 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:01,656 INFO L82 PathProgramCache]: Analyzing trace with hash -54549543, now seen corresponding path program 157 times [2018-07-25 08:49:01,656 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:02,937 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:02,937 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159] total 159 [2018-07-25 08:49:02,937 INFO L451 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-07-25 08:49:02,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-07-25 08:49:02,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=25123, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:49:02,938 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 160 states. [2018-07-25 08:49:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:04,843 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-07-25 08:49:04,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-07-25 08:49:04,843 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-07-25 08:49:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:04,843 INFO L225 Difference]: With dead ends: 323 [2018-07-25 08:49:04,843 INFO L226 Difference]: Without dead ends: 321 [2018-07-25 08:49:04,844 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=317, Invalid=25123, Unknown=0, NotChecked=0, Total=25440 [2018-07-25 08:49:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-07-25 08:49:04,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-07-25 08:49:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-07-25 08:49:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-07-25 08:49:04,852 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-07-25 08:49:04,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:04,852 INFO L472 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-07-25 08:49:04,852 INFO L473 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-07-25 08:49:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-07-25 08:49:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-25 08:49:04,853 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:04,853 INFO L354 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-07-25 08:49:04,853 INFO L415 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:04,853 INFO L82 PathProgramCache]: Analyzing trace with hash -882451181, now seen corresponding path program 158 times [2018-07-25 08:49:04,853 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:06,112 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:06,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160] total 160 [2018-07-25 08:49:06,112 INFO L451 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-07-25 08:49:06,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-07-25 08:49:06,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=25441, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:49:06,114 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 161 states. [2018-07-25 08:49:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:08,059 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-07-25 08:49:08,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-07-25 08:49:08,059 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 320 [2018-07-25 08:49:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:08,060 INFO L225 Difference]: With dead ends: 325 [2018-07-25 08:49:08,060 INFO L226 Difference]: Without dead ends: 323 [2018-07-25 08:49:08,061 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=319, Invalid=25441, Unknown=0, NotChecked=0, Total=25760 [2018-07-25 08:49:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-07-25 08:49:08,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-07-25 08:49:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-07-25 08:49:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-07-25 08:49:08,068 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-07-25 08:49:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:08,068 INFO L472 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-07-25 08:49:08,068 INFO L473 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-07-25 08:49:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-07-25 08:49:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-25 08:49:08,069 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:08,069 INFO L354 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-07-25 08:49:08,069 INFO L415 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:08,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1926975539, now seen corresponding path program 159 times [2018-07-25 08:49:08,070 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:09,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:09,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161] total 161 [2018-07-25 08:49:09,332 INFO L451 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-07-25 08:49:09,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-07-25 08:49:09,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=25761, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:49:09,334 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 162 states. [2018-07-25 08:49:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:11,335 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-07-25 08:49:11,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-07-25 08:49:11,335 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-07-25 08:49:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:11,336 INFO L225 Difference]: With dead ends: 327 [2018-07-25 08:49:11,336 INFO L226 Difference]: Without dead ends: 325 [2018-07-25 08:49:11,337 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=321, Invalid=25761, Unknown=0, NotChecked=0, Total=26082 [2018-07-25 08:49:11,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-07-25 08:49:11,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-07-25 08:49:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-07-25 08:49:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-07-25 08:49:11,345 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-07-25 08:49:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:11,345 INFO L472 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-07-25 08:49:11,345 INFO L473 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-07-25 08:49:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-07-25 08:49:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-07-25 08:49:11,346 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:11,346 INFO L354 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-07-25 08:49:11,347 INFO L415 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:11,347 INFO L82 PathProgramCache]: Analyzing trace with hash -692536313, now seen corresponding path program 160 times [2018-07-25 08:49:11,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:12,697 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:12,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162] total 162 [2018-07-25 08:49:12,697 INFO L451 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-07-25 08:49:12,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-07-25 08:49:12,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=26083, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:49:12,699 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 163 states. [2018-07-25 08:49:14,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:14,726 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-07-25 08:49:14,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-07-25 08:49:14,726 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 324 [2018-07-25 08:49:14,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:14,727 INFO L225 Difference]: With dead ends: 329 [2018-07-25 08:49:14,727 INFO L226 Difference]: Without dead ends: 327 [2018-07-25 08:49:14,728 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=323, Invalid=26083, Unknown=0, NotChecked=0, Total=26406 [2018-07-25 08:49:14,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-07-25 08:49:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-07-25 08:49:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-07-25 08:49:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-07-25 08:49:14,735 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-07-25 08:49:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:14,735 INFO L472 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-07-25 08:49:14,735 INFO L473 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-07-25 08:49:14,735 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-07-25 08:49:14,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-25 08:49:14,736 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:14,736 INFO L354 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-07-25 08:49:14,736 INFO L415 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:14,736 INFO L82 PathProgramCache]: Analyzing trace with hash 192586177, now seen corresponding path program 161 times [2018-07-25 08:49:14,737 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:16,178 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:16,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163] total 163 [2018-07-25 08:49:16,178 INFO L451 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-07-25 08:49:16,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-07-25 08:49:16,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=26407, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:49:16,180 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 164 states. [2018-07-25 08:49:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:18,229 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-07-25 08:49:18,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-07-25 08:49:18,230 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-07-25 08:49:18,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:18,230 INFO L225 Difference]: With dead ends: 331 [2018-07-25 08:49:18,230 INFO L226 Difference]: Without dead ends: 329 [2018-07-25 08:49:18,231 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=325, Invalid=26407, Unknown=0, NotChecked=0, Total=26732 [2018-07-25 08:49:18,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-07-25 08:49:18,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-07-25 08:49:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-07-25 08:49:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-07-25 08:49:18,238 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-07-25 08:49:18,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:18,239 INFO L472 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-07-25 08:49:18,239 INFO L473 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-07-25 08:49:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-07-25 08:49:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-25 08:49:18,239 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:18,240 INFO L354 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-07-25 08:49:18,240 INFO L415 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:18,240 INFO L82 PathProgramCache]: Analyzing trace with hash 391774459, now seen corresponding path program 162 times [2018-07-25 08:49:18,240 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:19,590 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:19,590 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164] total 164 [2018-07-25 08:49:19,591 INFO L451 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-07-25 08:49:19,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-07-25 08:49:19,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=26733, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:49:19,592 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 165 states. [2018-07-25 08:49:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:21,676 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-07-25 08:49:21,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-07-25 08:49:21,677 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 328 [2018-07-25 08:49:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:21,677 INFO L225 Difference]: With dead ends: 333 [2018-07-25 08:49:21,677 INFO L226 Difference]: Without dead ends: 331 [2018-07-25 08:49:21,678 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=26733, Unknown=0, NotChecked=0, Total=27060 [2018-07-25 08:49:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-07-25 08:49:21,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-07-25 08:49:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:49:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-07-25 08:49:21,685 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-07-25 08:49:21,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:21,686 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-07-25 08:49:21,686 INFO L473 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-07-25 08:49:21,686 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-07-25 08:49:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-25 08:49:21,686 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:21,687 INFO L354 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-07-25 08:49:21,687 INFO L415 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:21,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1461814859, now seen corresponding path program 163 times [2018-07-25 08:49:21,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:22,986 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:22,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165] total 165 [2018-07-25 08:49:22,987 INFO L451 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-07-25 08:49:22,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-07-25 08:49:22,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=27061, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:49:22,989 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 166 states. [2018-07-25 08:49:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:25,060 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-07-25 08:49:25,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-07-25 08:49:25,060 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-07-25 08:49:25,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:25,061 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:49:25,061 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 08:49:25,062 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=329, Invalid=27061, Unknown=0, NotChecked=0, Total=27390 [2018-07-25 08:49:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 08:49:25,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-07-25 08:49:25,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-07-25 08:49:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-07-25 08:49:25,075 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-07-25 08:49:25,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:25,076 INFO L472 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-07-25 08:49:25,076 INFO L473 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-07-25 08:49:25,076 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-07-25 08:49:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-25 08:49:25,077 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:25,077 INFO L354 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-07-25 08:49:25,078 INFO L415 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:25,078 INFO L82 PathProgramCache]: Analyzing trace with hash -349721617, now seen corresponding path program 164 times [2018-07-25 08:49:25,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:26,553 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:26,553 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166] total 166 [2018-07-25 08:49:26,553 INFO L451 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-07-25 08:49:26,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-07-25 08:49:26,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=27391, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:49:26,555 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 167 states. [2018-07-25 08:49:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:28,628 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-07-25 08:49:28,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-07-25 08:49:28,628 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 332 [2018-07-25 08:49:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:28,629 INFO L225 Difference]: With dead ends: 337 [2018-07-25 08:49:28,629 INFO L226 Difference]: Without dead ends: 335 [2018-07-25 08:49:28,630 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=331, Invalid=27391, Unknown=0, NotChecked=0, Total=27722 [2018-07-25 08:49:28,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-07-25 08:49:28,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-07-25 08:49:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-07-25 08:49:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-07-25 08:49:28,637 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-07-25 08:49:28,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:28,637 INFO L472 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-07-25 08:49:28,637 INFO L473 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-07-25 08:49:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-07-25 08:49:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-25 08:49:28,638 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:28,638 INFO L354 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-07-25 08:49:28,638 INFO L415 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:28,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1074972759, now seen corresponding path program 165 times [2018-07-25 08:49:28,639 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:30,001 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:30,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167] total 167 [2018-07-25 08:49:30,002 INFO L451 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-07-25 08:49:30,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-07-25 08:49:30,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=27723, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:49:30,003 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 168 states. [2018-07-25 08:49:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:32,097 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-07-25 08:49:32,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-07-25 08:49:32,097 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-07-25 08:49:32,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:32,098 INFO L225 Difference]: With dead ends: 339 [2018-07-25 08:49:32,098 INFO L226 Difference]: Without dead ends: 337 [2018-07-25 08:49:32,099 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=333, Invalid=27723, Unknown=0, NotChecked=0, Total=28056 [2018-07-25 08:49:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-07-25 08:49:32,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-07-25 08:49:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-07-25 08:49:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-07-25 08:49:32,106 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-07-25 08:49:32,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:32,106 INFO L472 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-07-25 08:49:32,106 INFO L473 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-07-25 08:49:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-07-25 08:49:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-07-25 08:49:32,107 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:32,107 INFO L354 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-07-25 08:49:32,107 INFO L415 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:32,107 INFO L82 PathProgramCache]: Analyzing trace with hash 2038349027, now seen corresponding path program 166 times [2018-07-25 08:49:32,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:33,459 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:33,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168] total 168 [2018-07-25 08:49:33,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-07-25 08:49:33,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-07-25 08:49:33,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=28057, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:49:33,461 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 169 states. [2018-07-25 08:49:35,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:35,569 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-07-25 08:49:35,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-07-25 08:49:35,569 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 336 [2018-07-25 08:49:35,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:35,570 INFO L225 Difference]: With dead ends: 341 [2018-07-25 08:49:35,570 INFO L226 Difference]: Without dead ends: 339 [2018-07-25 08:49:35,571 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=335, Invalid=28057, Unknown=0, NotChecked=0, Total=28392 [2018-07-25 08:49:35,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-07-25 08:49:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-07-25 08:49:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-07-25 08:49:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-07-25 08:49:35,578 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-07-25 08:49:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:35,579 INFO L472 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-07-25 08:49:35,579 INFO L473 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-07-25 08:49:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-07-25 08:49:35,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-25 08:49:35,580 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:35,580 INFO L354 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-07-25 08:49:35,580 INFO L415 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:35,580 INFO L82 PathProgramCache]: Analyzing trace with hash 348380061, now seen corresponding path program 167 times [2018-07-25 08:49:35,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:37,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:37,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169] total 169 [2018-07-25 08:49:37,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-07-25 08:49:37,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-07-25 08:49:37,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=28393, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:49:37,055 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 170 states. [2018-07-25 08:49:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:39,291 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-07-25 08:49:39,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-07-25 08:49:39,291 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-07-25 08:49:39,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:39,292 INFO L225 Difference]: With dead ends: 343 [2018-07-25 08:49:39,292 INFO L226 Difference]: Without dead ends: 341 [2018-07-25 08:49:39,293 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=337, Invalid=28393, Unknown=0, NotChecked=0, Total=28730 [2018-07-25 08:49:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-07-25 08:49:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-07-25 08:49:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-07-25 08:49:39,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-07-25 08:49:39,300 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-07-25 08:49:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:39,301 INFO L472 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-07-25 08:49:39,301 INFO L473 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-07-25 08:49:39,301 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-07-25 08:49:39,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-25 08:49:39,302 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:39,302 INFO L354 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-07-25 08:49:39,302 INFO L415 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:39,302 INFO L82 PathProgramCache]: Analyzing trace with hash -214158377, now seen corresponding path program 168 times [2018-07-25 08:49:39,302 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:40,685 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:40,685 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170] total 170 [2018-07-25 08:49:40,685 INFO L451 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-07-25 08:49:40,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-07-25 08:49:40,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=28731, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:49:40,687 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 171 states. [2018-07-25 08:49:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:42,926 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-07-25 08:49:42,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-07-25 08:49:42,926 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 340 [2018-07-25 08:49:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:42,927 INFO L225 Difference]: With dead ends: 345 [2018-07-25 08:49:42,927 INFO L226 Difference]: Without dead ends: 343 [2018-07-25 08:49:42,928 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=339, Invalid=28731, Unknown=0, NotChecked=0, Total=29070 [2018-07-25 08:49:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-07-25 08:49:42,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-07-25 08:49:42,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-07-25 08:49:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-07-25 08:49:42,935 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-07-25 08:49:42,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:42,935 INFO L472 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-07-25 08:49:42,935 INFO L473 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-07-25 08:49:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-07-25 08:49:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-25 08:49:42,936 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:42,937 INFO L354 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-07-25 08:49:42,937 INFO L415 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:42,937 INFO L82 PathProgramCache]: Analyzing trace with hash 352282001, now seen corresponding path program 169 times [2018-07-25 08:49:42,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:44,344 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:44,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171] total 171 [2018-07-25 08:49:44,345 INFO L451 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-07-25 08:49:44,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-07-25 08:49:44,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=29071, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:49:44,347 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 172 states. [2018-07-25 08:49:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:46,592 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-07-25 08:49:46,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:49:46,593 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-07-25 08:49:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:46,593 INFO L225 Difference]: With dead ends: 347 [2018-07-25 08:49:46,593 INFO L226 Difference]: Without dead ends: 345 [2018-07-25 08:49:46,594 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=341, Invalid=29071, Unknown=0, NotChecked=0, Total=29412 [2018-07-25 08:49:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-07-25 08:49:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-07-25 08:49:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-07-25 08:49:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-07-25 08:49:46,602 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-07-25 08:49:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:46,602 INFO L472 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-07-25 08:49:46,603 INFO L473 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-07-25 08:49:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-07-25 08:49:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-25 08:49:46,604 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:46,604 INFO L354 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-07-25 08:49:46,604 INFO L415 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:46,604 INFO L82 PathProgramCache]: Analyzing trace with hash -759361333, now seen corresponding path program 170 times [2018-07-25 08:49:46,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:48,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:48,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172] total 172 [2018-07-25 08:49:48,041 INFO L451 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-07-25 08:49:48,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-07-25 08:49:48,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=29413, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:49:48,045 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 173 states. [2018-07-25 08:49:50,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:50,317 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-07-25 08:49:50,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-07-25 08:49:50,317 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 344 [2018-07-25 08:49:50,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:50,317 INFO L225 Difference]: With dead ends: 349 [2018-07-25 08:49:50,318 INFO L226 Difference]: Without dead ends: 347 [2018-07-25 08:49:50,319 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=343, Invalid=29413, Unknown=0, NotChecked=0, Total=29756 [2018-07-25 08:49:50,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-07-25 08:49:50,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-07-25 08:49:50,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-07-25 08:49:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-07-25 08:49:50,326 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-07-25 08:49:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:50,327 INFO L472 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-07-25 08:49:50,327 INFO L473 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-07-25 08:49:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-07-25 08:49:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-25 08:49:50,328 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:50,328 INFO L354 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-07-25 08:49:50,328 INFO L415 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:50,328 INFO L82 PathProgramCache]: Analyzing trace with hash 398251397, now seen corresponding path program 171 times [2018-07-25 08:49:50,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:51,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:51,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173] total 173 [2018-07-25 08:49:51,839 INFO L451 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-07-25 08:49:51,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-07-25 08:49:51,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=29757, Unknown=0, NotChecked=0, Total=30102 [2018-07-25 08:49:51,841 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 174 states. Received shutdown request... [2018-07-25 08:49:54,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-07-25 08:49:54,025 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:49:54,033 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:49:54,033 INFO L202 PluginConnector]: Adding new model functions1.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:49:54 BoogieIcfgContainer [2018-07-25 08:49:54,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:49:54,034 INFO L168 Benchmark]: Toolchain (without parser) took 250621.32 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: -340.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-25 08:49:54,036 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:54,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.51 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:54,037 INFO L168 Benchmark]: Boogie Preprocessor took 24.38 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:54,037 INFO L168 Benchmark]: RCFGBuilder took 280.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:49:54,038 INFO L168 Benchmark]: TraceAbstraction took 250263.12 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: -350.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-25 08:49:54,040 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 0.25 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 43.51 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 24.38 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 280.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250263.12 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: -350.7 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: 41]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 41). Cancelled while BasicCegarLoop was constructing difference of abstraction (347states) and interpolant automaton (currently 172 states, 174 states before enhancement), while ReachableStatesComputation was computing reachable states (340 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 250.2s OverallTime, 172 OverallIterations, 172 TraceHistogramMax, 144.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15390 SDtfs, 0 SDslu, 1710457 SDs, 0 SdLazy, 1740037 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15050 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 14878 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=347occurred in iteration=171, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 171 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 88.7s InterpolantComputationTime, 30100 NumberOfCodeBlocks, 30100 NumberOfCodeBlocksAsserted, 172 NumberOfCheckSat, 29928 ConstructedInterpolants, 0 QuantifiedInterpolants, 48145380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 172 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1696092 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/functions1.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-49-54-054.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/functions1.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-49-54-054.csv Completed graceful shutdown