java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/real-life/threadpooling_out_Reals.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:15:02,121 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:15:02,124 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:15:02,143 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:15:02,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:15:02,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:15:02,146 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:15:02,149 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:15:02,151 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:15:02,152 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:15:02,155 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 15:15:02,155 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 15:15:02,157 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 15:15:02,159 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 15:15:02,160 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 15:15:02,161 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 15:15:02,168 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 15:15:02,174 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 15:15:02,179 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 15:15:02,181 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 15:15:02,185 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 15:15:02,187 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 15:15:02,193 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 15:15:02,193 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 15:15:02,194 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 15:15:02,195 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 15:15:02,197 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 15:15:02,198 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 15:15:02,199 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 15:15:02,200 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 15:15:02,200 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 15:15:02,201 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 15:15:02,203 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 15:15:02,203 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 15:15:02,205 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 15:15:02,205 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 15:15:02,206 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 15:15:02,235 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:15:02,236 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:15:02,238 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:15:02,239 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:15:02,239 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:15:02,239 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:15:02,239 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:15:02,240 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:15:02,307 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:15:02,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:15:02,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:15:02,333 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:15:02,334 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:15:02,335 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_out_Reals.bpl [2018-07-23 15:15:02,335 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_out_Reals.bpl' [2018-07-23 15:15:02,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:15:02,438 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:15:02,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:15:02,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:15:02,439 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:15:02,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:02" (1/1) ... [2018-07-23 15:15:02,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:02" (1/1) ... [2018-07-23 15:15:02,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:02" (1/1) ... [2018-07-23 15:15:02,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:02" (1/1) ... [2018-07-23 15:15:02,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:02" (1/1) ... [2018-07-23 15:15:02,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:02" (1/1) ... [2018-07-23 15:15:02,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:02" (1/1) ... [2018-07-23 15:15:02,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:15:02,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:15:02,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:15:02,530 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:15:02,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:02" (1/1) ... [2018-07-23 15:15:02,630 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-07-23 15:15:02,631 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-07-23 15:15:02,631 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-07-23 15:15:02,985 INFO L258 CfgBuilder]: Using library mode [2018-07-23 15:15:02,986 INFO L202 PluginConnector]: Adding new model threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:15:02 BoogieIcfgContainer [2018-07-23 15:15:02,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:15:02,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:15:02,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:15:02,995 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:15:02,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:02" (1/2) ... [2018-07-23 15:15:02,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730847c5 and model type threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:15:02, skipping insertion in model container [2018-07-23 15:15:02,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:15:02" (2/2) ... [2018-07-23 15:15:03,000 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_out_Reals.bpl [2018-07-23 15:15:03,010 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:15:03,022 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2018-07-23 15:15:03,069 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:15:03,070 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:15:03,070 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:15:03,071 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:15:03,071 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:15:03,071 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:15:03,071 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:15:03,071 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:15:03,071 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:15:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-07-23 15:15:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:03,097 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:03,099 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:03,100 INFO L414 AbstractCegarLoop]: === Iteration 1 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash -2113132074, now seen corresponding path program 1 times [2018-07-23 15:15:03,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:03,219 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:03,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 15:15:03,224 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:15:03,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:15:03,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:15:03,244 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 6 states. [2018-07-23 15:15:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:03,846 INFO L93 Difference]: Finished difference Result 163 states and 353 transitions. [2018-07-23 15:15:03,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:15:03,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-23 15:15:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:03,872 INFO L225 Difference]: With dead ends: 163 [2018-07-23 15:15:03,872 INFO L226 Difference]: Without dead ends: 158 [2018-07-23 15:15:03,880 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-23 15:15:03,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 93. [2018-07-23 15:15:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-23 15:15:03,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 195 transitions. [2018-07-23 15:15:03,960 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 195 transitions. Word has length 7 [2018-07-23 15:15:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:03,960 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 195 transitions. [2018-07-23 15:15:03,960 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:15:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 195 transitions. [2018-07-23 15:15:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:03,962 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:03,962 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:03,962 INFO L414 AbstractCegarLoop]: === Iteration 2 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:03,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1894705935, now seen corresponding path program 1 times [2018-07-23 15:15:03,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:03,984 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:03,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 15:15:03,986 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:15:03,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:15:03,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:15:03,988 INFO L87 Difference]: Start difference. First operand 93 states and 195 transitions. Second operand 6 states. [2018-07-23 15:15:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:04,391 INFO L93 Difference]: Finished difference Result 188 states and 413 transitions. [2018-07-23 15:15:04,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-23 15:15:04,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-23 15:15:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:04,399 INFO L225 Difference]: With dead ends: 188 [2018-07-23 15:15:04,400 INFO L226 Difference]: Without dead ends: 183 [2018-07-23 15:15:04,401 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:04,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-23 15:15:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 118. [2018-07-23 15:15:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-23 15:15:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 255 transitions. [2018-07-23 15:15:04,447 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 255 transitions. Word has length 7 [2018-07-23 15:15:04,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:04,449 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 255 transitions. [2018-07-23 15:15:04,450 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:15:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 255 transitions. [2018-07-23 15:15:04,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-23 15:15:04,451 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:04,451 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:04,453 INFO L414 AbstractCegarLoop]: === Iteration 3 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:04,453 INFO L82 PathProgramCache]: Analyzing trace with hash 672968560, now seen corresponding path program 1 times [2018-07-23 15:15:04,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:04,473 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:04,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:04,474 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:04,474 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:04,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:04,475 INFO L87 Difference]: Start difference. First operand 118 states and 255 transitions. Second operand 7 states. [2018-07-23 15:15:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:04,810 INFO L93 Difference]: Finished difference Result 283 states and 637 transitions. [2018-07-23 15:15:04,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:04,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2018-07-23 15:15:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:04,815 INFO L225 Difference]: With dead ends: 283 [2018-07-23 15:15:04,815 INFO L226 Difference]: Without dead ends: 278 [2018-07-23 15:15:04,817 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:15:04,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-23 15:15:04,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 147. [2018-07-23 15:15:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-23 15:15:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 323 transitions. [2018-07-23 15:15:04,862 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 323 transitions. Word has length 9 [2018-07-23 15:15:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:04,865 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 323 transitions. [2018-07-23 15:15:04,865 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:04,865 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 323 transitions. [2018-07-23 15:15:04,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-23 15:15:04,867 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:04,867 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:04,867 INFO L414 AbstractCegarLoop]: === Iteration 4 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2061636985, now seen corresponding path program 1 times [2018-07-23 15:15:04,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:04,909 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:04,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:04,910 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:04,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:04,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:04,911 INFO L87 Difference]: Start difference. First operand 147 states and 323 transitions. Second operand 7 states. [2018-07-23 15:15:05,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:05,247 INFO L93 Difference]: Finished difference Result 387 states and 869 transitions. [2018-07-23 15:15:05,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:05,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2018-07-23 15:15:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:05,252 INFO L225 Difference]: With dead ends: 387 [2018-07-23 15:15:05,252 INFO L226 Difference]: Without dead ends: 375 [2018-07-23 15:15:05,253 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:05,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-23 15:15:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 203. [2018-07-23 15:15:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-23 15:15:05,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 455 transitions. [2018-07-23 15:15:05,324 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 455 transitions. Word has length 9 [2018-07-23 15:15:05,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:05,325 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 455 transitions. [2018-07-23 15:15:05,325 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 455 transitions. [2018-07-23 15:15:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:05,327 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:05,329 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:05,329 INFO L414 AbstractCegarLoop]: === Iteration 5 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:05,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1603442246, now seen corresponding path program 1 times [2018-07-23 15:15:05,330 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:05,367 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:05,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:05,370 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:05,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:05,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:05,371 INFO L87 Difference]: Start difference. First operand 203 states and 455 transitions. Second operand 9 states. [2018-07-23 15:15:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:06,274 INFO L93 Difference]: Finished difference Result 725 states and 1622 transitions. [2018-07-23 15:15:06,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:06,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-23 15:15:06,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:06,280 INFO L225 Difference]: With dead ends: 725 [2018-07-23 15:15:06,280 INFO L226 Difference]: Without dead ends: 717 [2018-07-23 15:15:06,281 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:15:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2018-07-23 15:15:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 354. [2018-07-23 15:15:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-07-23 15:15:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 843 transitions. [2018-07-23 15:15:06,387 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 843 transitions. Word has length 12 [2018-07-23 15:15:06,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:06,388 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 843 transitions. [2018-07-23 15:15:06,388 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 843 transitions. [2018-07-23 15:15:06,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:06,390 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:06,390 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:06,390 INFO L414 AbstractCegarLoop]: === Iteration 6 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:06,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1573889574, now seen corresponding path program 1 times [2018-07-23 15:15:06,391 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:06,413 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:06,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:06,414 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:06,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:06,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:06,415 INFO L87 Difference]: Start difference. First operand 354 states and 843 transitions. Second operand 9 states. [2018-07-23 15:15:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:07,691 INFO L93 Difference]: Finished difference Result 1008 states and 2278 transitions. [2018-07-23 15:15:07,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:15:07,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-23 15:15:07,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:07,703 INFO L225 Difference]: With dead ends: 1008 [2018-07-23 15:15:07,703 INFO L226 Difference]: Without dead ends: 1000 [2018-07-23 15:15:07,705 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:15:07,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2018-07-23 15:15:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 364. [2018-07-23 15:15:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-23 15:15:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 868 transitions. [2018-07-23 15:15:07,835 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 868 transitions. Word has length 12 [2018-07-23 15:15:07,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:07,835 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 868 transitions. [2018-07-23 15:15:07,836 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:07,836 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 868 transitions. [2018-07-23 15:15:07,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:07,840 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:07,840 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:07,840 INFO L414 AbstractCegarLoop]: === Iteration 7 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:07,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1576689928, now seen corresponding path program 1 times [2018-07-23 15:15:07,841 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:07,871 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:07,871 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:07,872 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:07,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:07,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:07,873 INFO L87 Difference]: Start difference. First operand 364 states and 868 transitions. Second operand 9 states. [2018-07-23 15:15:09,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:09,091 INFO L93 Difference]: Finished difference Result 924 states and 2097 transitions. [2018-07-23 15:15:09,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:15:09,091 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-23 15:15:09,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:09,100 INFO L225 Difference]: With dead ends: 924 [2018-07-23 15:15:09,100 INFO L226 Difference]: Without dead ends: 916 [2018-07-23 15:15:09,102 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:15:09,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2018-07-23 15:15:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 394. [2018-07-23 15:15:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-07-23 15:15:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 957 transitions. [2018-07-23 15:15:09,255 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 957 transitions. Word has length 12 [2018-07-23 15:15:09,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:09,255 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 957 transitions. [2018-07-23 15:15:09,255 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:09,255 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 957 transitions. [2018-07-23 15:15:09,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:09,256 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:09,256 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:09,257 INFO L414 AbstractCegarLoop]: === Iteration 8 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:09,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1576587783, now seen corresponding path program 1 times [2018-07-23 15:15:09,259 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:09,280 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:09,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:09,281 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:09,283 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:09,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:09,284 INFO L87 Difference]: Start difference. First operand 394 states and 957 transitions. Second operand 9 states. [2018-07-23 15:15:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:10,325 INFO L93 Difference]: Finished difference Result 791 states and 1795 transitions. [2018-07-23 15:15:10,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:10,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-23 15:15:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:10,331 INFO L225 Difference]: With dead ends: 791 [2018-07-23 15:15:10,332 INFO L226 Difference]: Without dead ends: 783 [2018-07-23 15:15:10,333 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:10,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2018-07-23 15:15:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 392. [2018-07-23 15:15:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-07-23 15:15:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 950 transitions. [2018-07-23 15:15:10,515 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 950 transitions. Word has length 12 [2018-07-23 15:15:10,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:10,515 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 950 transitions. [2018-07-23 15:15:10,515 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:10,516 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 950 transitions. [2018-07-23 15:15:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:10,517 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:10,517 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:10,517 INFO L414 AbstractCegarLoop]: === Iteration 9 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:10,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1733624339, now seen corresponding path program 1 times [2018-07-23 15:15:10,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:10,536 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:10,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:10,536 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:10,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:10,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:10,537 INFO L87 Difference]: Start difference. First operand 392 states and 950 transitions. Second operand 9 states. [2018-07-23 15:15:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:11,874 INFO L93 Difference]: Finished difference Result 1040 states and 2400 transitions. [2018-07-23 15:15:11,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:15:11,875 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-23 15:15:11,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:11,882 INFO L225 Difference]: With dead ends: 1040 [2018-07-23 15:15:11,882 INFO L226 Difference]: Without dead ends: 1032 [2018-07-23 15:15:11,884 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:15:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2018-07-23 15:15:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 397. [2018-07-23 15:15:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-23 15:15:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 962 transitions. [2018-07-23 15:15:12,084 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 962 transitions. Word has length 12 [2018-07-23 15:15:12,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:12,084 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 962 transitions. [2018-07-23 15:15:12,084 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 962 transitions. [2018-07-23 15:15:12,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:12,085 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:12,085 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:12,086 INFO L414 AbstractCegarLoop]: === Iteration 10 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:12,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1736424693, now seen corresponding path program 1 times [2018-07-23 15:15:12,086 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:12,101 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:12,101 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:12,101 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:12,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:12,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:12,102 INFO L87 Difference]: Start difference. First operand 397 states and 962 transitions. Second operand 9 states. [2018-07-23 15:15:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:13,637 INFO L93 Difference]: Finished difference Result 1166 states and 2697 transitions. [2018-07-23 15:15:13,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-23 15:15:13,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-23 15:15:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:13,647 INFO L225 Difference]: With dead ends: 1166 [2018-07-23 15:15:13,648 INFO L226 Difference]: Without dead ends: 1158 [2018-07-23 15:15:13,650 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=365, Invalid=967, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:15:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2018-07-23 15:15:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 427. [2018-07-23 15:15:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-23 15:15:13,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1051 transitions. [2018-07-23 15:15:13,866 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1051 transitions. Word has length 12 [2018-07-23 15:15:13,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:13,866 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 1051 transitions. [2018-07-23 15:15:13,866 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:13,867 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1051 transitions. [2018-07-23 15:15:13,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:13,867 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:13,868 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:13,868 INFO L414 AbstractCegarLoop]: === Iteration 11 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:13,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1736322548, now seen corresponding path program 1 times [2018-07-23 15:15:13,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:13,885 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:13,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:13,886 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:13,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:13,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:13,886 INFO L87 Difference]: Start difference. First operand 427 states and 1051 transitions. Second operand 9 states. [2018-07-23 15:15:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:15,407 INFO L93 Difference]: Finished difference Result 1127 states and 2616 transitions. [2018-07-23 15:15:15,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:15:15,408 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-23 15:15:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:15,415 INFO L225 Difference]: With dead ends: 1127 [2018-07-23 15:15:15,416 INFO L226 Difference]: Without dead ends: 1119 [2018-07-23 15:15:15,418 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:15:15,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2018-07-23 15:15:15,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 387. [2018-07-23 15:15:15,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-23 15:15:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 937 transitions. [2018-07-23 15:15:15,648 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 937 transitions. Word has length 12 [2018-07-23 15:15:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:15,649 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 937 transitions. [2018-07-23 15:15:15,649 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 937 transitions. [2018-07-23 15:15:15,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:15,650 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:15,650 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:15,650 INFO L414 AbstractCegarLoop]: === Iteration 12 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:15,651 INFO L82 PathProgramCache]: Analyzing trace with hash -608805552, now seen corresponding path program 1 times [2018-07-23 15:15:15,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:15,664 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:15,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:15,665 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:15,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:15,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:15,665 INFO L87 Difference]: Start difference. First operand 387 states and 937 transitions. Second operand 9 states. [2018-07-23 15:15:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:17,028 INFO L93 Difference]: Finished difference Result 975 states and 2260 transitions. [2018-07-23 15:15:17,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:15:17,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-23 15:15:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:17,035 INFO L225 Difference]: With dead ends: 975 [2018-07-23 15:15:17,035 INFO L226 Difference]: Without dead ends: 967 [2018-07-23 15:15:17,037 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:15:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-07-23 15:15:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 411. [2018-07-23 15:15:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-23 15:15:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 1004 transitions. [2018-07-23 15:15:17,304 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 1004 transitions. Word has length 12 [2018-07-23 15:15:17,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:17,306 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 1004 transitions. [2018-07-23 15:15:17,306 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 1004 transitions. [2018-07-23 15:15:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:17,307 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:17,307 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:17,307 INFO L414 AbstractCegarLoop]: === Iteration 13 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:17,308 INFO L82 PathProgramCache]: Analyzing trace with hash -608703407, now seen corresponding path program 1 times [2018-07-23 15:15:17,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:17,321 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:17,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:17,321 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:17,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:17,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:17,322 INFO L87 Difference]: Start difference. First operand 411 states and 1004 transitions. Second operand 9 states. [2018-07-23 15:15:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:18,929 INFO L93 Difference]: Finished difference Result 1011 states and 2327 transitions. [2018-07-23 15:15:18,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:15:18,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-23 15:15:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:18,938 INFO L225 Difference]: With dead ends: 1011 [2018-07-23 15:15:18,938 INFO L226 Difference]: Without dead ends: 1003 [2018-07-23 15:15:18,940 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:15:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2018-07-23 15:15:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 391. [2018-07-23 15:15:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-23 15:15:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 944 transitions. [2018-07-23 15:15:19,245 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 944 transitions. Word has length 12 [2018-07-23 15:15:19,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:19,245 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 944 transitions. [2018-07-23 15:15:19,245 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 944 transitions. [2018-07-23 15:15:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:19,246 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:19,247 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:19,247 INFO L414 AbstractCegarLoop]: === Iteration 14 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:19,247 INFO L82 PathProgramCache]: Analyzing trace with hash -500853260, now seen corresponding path program 1 times [2018-07-23 15:15:19,247 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:19,262 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:19,262 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:19,262 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:19,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:19,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:19,263 INFO L87 Difference]: Start difference. First operand 391 states and 944 transitions. Second operand 9 states. [2018-07-23 15:15:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:20,503 INFO L93 Difference]: Finished difference Result 859 states and 1980 transitions. [2018-07-23 15:15:20,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:20,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-23 15:15:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:20,516 INFO L225 Difference]: With dead ends: 859 [2018-07-23 15:15:20,517 INFO L226 Difference]: Without dead ends: 851 [2018-07-23 15:15:20,518 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:15:20,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2018-07-23 15:15:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 381. [2018-07-23 15:15:20,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-23 15:15:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 915 transitions. [2018-07-23 15:15:20,827 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 915 transitions. Word has length 12 [2018-07-23 15:15:20,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:20,827 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 915 transitions. [2018-07-23 15:15:20,828 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 915 transitions. [2018-07-23 15:15:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:20,828 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:20,829 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:20,829 INFO L414 AbstractCegarLoop]: === Iteration 15 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:20,829 INFO L82 PathProgramCache]: Analyzing trace with hash 195419672, now seen corresponding path program 1 times [2018-07-23 15:15:20,829 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:20,851 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:20,851 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:20,852 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:20,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:20,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:20,853 INFO L87 Difference]: Start difference. First operand 381 states and 915 transitions. Second operand 8 states. [2018-07-23 15:15:22,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:22,039 INFO L93 Difference]: Finished difference Result 962 states and 2175 transitions. [2018-07-23 15:15:22,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:15:22,040 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-23 15:15:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:22,046 INFO L225 Difference]: With dead ends: 962 [2018-07-23 15:15:22,046 INFO L226 Difference]: Without dead ends: 954 [2018-07-23 15:15:22,047 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:15:22,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-07-23 15:15:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 504. [2018-07-23 15:15:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2018-07-23 15:15:22,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1236 transitions. [2018-07-23 15:15:22,423 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1236 transitions. Word has length 12 [2018-07-23 15:15:22,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:22,423 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 1236 transitions. [2018-07-23 15:15:22,423 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:22,424 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1236 transitions. [2018-07-23 15:15:22,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:22,424 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:22,424 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:22,425 INFO L414 AbstractCegarLoop]: === Iteration 16 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:22,425 INFO L82 PathProgramCache]: Analyzing trace with hash 192721184, now seen corresponding path program 1 times [2018-07-23 15:15:22,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:22,435 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:22,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:22,436 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:22,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:22,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:22,436 INFO L87 Difference]: Start difference. First operand 504 states and 1236 transitions. Second operand 8 states. [2018-07-23 15:15:23,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:23,861 INFO L93 Difference]: Finished difference Result 1064 states and 2409 transitions. [2018-07-23 15:15:23,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:15:23,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-23 15:15:23,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:23,868 INFO L225 Difference]: With dead ends: 1064 [2018-07-23 15:15:23,868 INFO L226 Difference]: Without dead ends: 1056 [2018-07-23 15:15:23,869 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:15:23,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2018-07-23 15:15:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 522. [2018-07-23 15:15:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-07-23 15:15:24,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1279 transitions. [2018-07-23 15:15:24,342 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1279 transitions. Word has length 12 [2018-07-23 15:15:24,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:24,342 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 1279 transitions. [2018-07-23 15:15:24,342 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:24,343 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1279 transitions. [2018-07-23 15:15:24,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:24,343 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:24,344 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:24,344 INFO L414 AbstractCegarLoop]: === Iteration 17 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:24,344 INFO L82 PathProgramCache]: Analyzing trace with hash 192721463, now seen corresponding path program 1 times [2018-07-23 15:15:24,344 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:24,357 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:24,357 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:24,357 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:24,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:24,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:24,358 INFO L87 Difference]: Start difference. First operand 522 states and 1279 transitions. Second operand 8 states. [2018-07-23 15:15:26,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:26,100 INFO L93 Difference]: Finished difference Result 1241 states and 2843 transitions. [2018-07-23 15:15:26,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-23 15:15:26,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-23 15:15:26,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:26,108 INFO L225 Difference]: With dead ends: 1241 [2018-07-23 15:15:26,108 INFO L226 Difference]: Without dead ends: 1233 [2018-07-23 15:15:26,109 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 15:15:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2018-07-23 15:15:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 570. [2018-07-23 15:15:26,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2018-07-23 15:15:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1411 transitions. [2018-07-23 15:15:26,641 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1411 transitions. Word has length 12 [2018-07-23 15:15:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:26,642 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 1411 transitions. [2018-07-23 15:15:26,642 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1411 transitions. [2018-07-23 15:15:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:26,643 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:26,643 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:26,643 INFO L414 AbstractCegarLoop]: === Iteration 18 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:26,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1424310915, now seen corresponding path program 1 times [2018-07-23 15:15:26,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:26,653 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:26,653 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:26,653 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:26,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:26,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:26,654 INFO L87 Difference]: Start difference. First operand 570 states and 1411 transitions. Second operand 8 states. [2018-07-23 15:15:28,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:28,083 INFO L93 Difference]: Finished difference Result 1139 states and 2639 transitions. [2018-07-23 15:15:28,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:15:28,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-23 15:15:28,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:28,090 INFO L225 Difference]: With dead ends: 1139 [2018-07-23 15:15:28,091 INFO L226 Difference]: Without dead ends: 1131 [2018-07-23 15:15:28,091 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:28,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2018-07-23 15:15:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 588. [2018-07-23 15:15:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2018-07-23 15:15:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1454 transitions. [2018-07-23 15:15:28,481 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1454 transitions. Word has length 12 [2018-07-23 15:15:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:28,481 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 1454 transitions. [2018-07-23 15:15:28,481 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1454 transitions. [2018-07-23 15:15:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:28,482 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:28,482 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:28,483 INFO L414 AbstractCegarLoop]: === Iteration 19 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:28,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1424311194, now seen corresponding path program 1 times [2018-07-23 15:15:28,483 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:28,490 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:28,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:28,491 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:28,491 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:28,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:28,492 INFO L87 Difference]: Start difference. First operand 588 states and 1454 transitions. Second operand 8 states. [2018-07-23 15:15:29,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:29,940 INFO L93 Difference]: Finished difference Result 1325 states and 3082 transitions. [2018-07-23 15:15:29,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:15:29,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-23 15:15:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:29,949 INFO L225 Difference]: With dead ends: 1325 [2018-07-23 15:15:29,950 INFO L226 Difference]: Without dead ends: 1317 [2018-07-23 15:15:29,951 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:15:29,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2018-07-23 15:15:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 573. [2018-07-23 15:15:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2018-07-23 15:15:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1417 transitions. [2018-07-23 15:15:30,379 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1417 transitions. Word has length 12 [2018-07-23 15:15:30,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:30,379 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 1417 transitions. [2018-07-23 15:15:30,379 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:30,379 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1417 transitions. [2018-07-23 15:15:30,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:30,380 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:30,380 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:30,381 INFO L414 AbstractCegarLoop]: === Iteration 20 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:30,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1428190751, now seen corresponding path program 1 times [2018-07-23 15:15:30,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:30,388 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:30,389 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:30,389 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:30,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:30,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:30,390 INFO L87 Difference]: Start difference. First operand 573 states and 1417 transitions. Second operand 8 states. [2018-07-23 15:15:31,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:31,718 INFO L93 Difference]: Finished difference Result 1334 states and 3099 transitions. [2018-07-23 15:15:31,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:15:31,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-23 15:15:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:31,726 INFO L225 Difference]: With dead ends: 1334 [2018-07-23 15:15:31,726 INFO L226 Difference]: Without dead ends: 1326 [2018-07-23 15:15:31,727 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:15:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2018-07-23 15:15:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 579. [2018-07-23 15:15:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2018-07-23 15:15:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1431 transitions. [2018-07-23 15:15:32,172 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1431 transitions. Word has length 12 [2018-07-23 15:15:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:32,172 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 1431 transitions. [2018-07-23 15:15:32,173 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1431 transitions. [2018-07-23 15:15:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:32,173 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:32,173 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:32,173 INFO L414 AbstractCegarLoop]: === Iteration 21 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash 725999160, now seen corresponding path program 1 times [2018-07-23 15:15:32,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:32,181 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:32,181 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:32,181 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:32,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:32,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:32,182 INFO L87 Difference]: Start difference. First operand 579 states and 1431 transitions. Second operand 8 states. [2018-07-23 15:15:32,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:32,983 INFO L93 Difference]: Finished difference Result 919 states and 2156 transitions. [2018-07-23 15:15:32,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:15:32,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-23 15:15:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:32,989 INFO L225 Difference]: With dead ends: 919 [2018-07-23 15:15:32,989 INFO L226 Difference]: Without dead ends: 911 [2018-07-23 15:15:32,990 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:32,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2018-07-23 15:15:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 570. [2018-07-23 15:15:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2018-07-23 15:15:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1404 transitions. [2018-07-23 15:15:33,352 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1404 transitions. Word has length 12 [2018-07-23 15:15:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:33,352 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 1404 transitions. [2018-07-23 15:15:33,352 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1404 transitions. [2018-07-23 15:15:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:33,353 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:33,353 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:33,353 INFO L414 AbstractCegarLoop]: === Iteration 22 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:33,353 INFO L82 PathProgramCache]: Analyzing trace with hash 725999439, now seen corresponding path program 1 times [2018-07-23 15:15:33,353 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:33,361 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:33,361 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:33,361 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:33,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:33,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:33,362 INFO L87 Difference]: Start difference. First operand 570 states and 1404 transitions. Second operand 8 states. [2018-07-23 15:15:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:34,456 INFO L93 Difference]: Finished difference Result 1095 states and 2579 transitions. [2018-07-23 15:15:34,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:15:34,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-23 15:15:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:34,461 INFO L225 Difference]: With dead ends: 1095 [2018-07-23 15:15:34,461 INFO L226 Difference]: Without dead ends: 1087 [2018-07-23 15:15:34,462 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:15:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2018-07-23 15:15:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 555. [2018-07-23 15:15:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2018-07-23 15:15:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1367 transitions. [2018-07-23 15:15:34,842 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1367 transitions. Word has length 12 [2018-07-23 15:15:34,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:34,843 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 1367 transitions. [2018-07-23 15:15:34,843 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1367 transitions. [2018-07-23 15:15:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:34,844 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:34,844 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:34,844 INFO L414 AbstractCegarLoop]: === Iteration 23 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:34,844 INFO L82 PathProgramCache]: Analyzing trace with hash 729878996, now seen corresponding path program 1 times [2018-07-23 15:15:34,844 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:34,854 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:34,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:34,854 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:34,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:34,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:34,855 INFO L87 Difference]: Start difference. First operand 555 states and 1367 transitions. Second operand 8 states. [2018-07-23 15:15:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:36,453 INFO L93 Difference]: Finished difference Result 1304 states and 3052 transitions. [2018-07-23 15:15:36,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:15:36,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-23 15:15:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:36,457 INFO L225 Difference]: With dead ends: 1304 [2018-07-23 15:15:36,457 INFO L226 Difference]: Without dead ends: 1296 [2018-07-23 15:15:36,458 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:15:36,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2018-07-23 15:15:36,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 552. [2018-07-23 15:15:36,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2018-07-23 15:15:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1361 transitions. [2018-07-23 15:15:36,865 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1361 transitions. Word has length 12 [2018-07-23 15:15:36,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:36,866 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 1361 transitions. [2018-07-23 15:15:36,866 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:36,866 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1361 transitions. [2018-07-23 15:15:36,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 15:15:36,867 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:36,867 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:36,867 INFO L414 AbstractCegarLoop]: === Iteration 24 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:36,867 INFO L82 PathProgramCache]: Analyzing trace with hash 819460533, now seen corresponding path program 1 times [2018-07-23 15:15:36,867 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:36,874 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:36,874 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:36,875 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:36,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:36,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:36,875 INFO L87 Difference]: Start difference. First operand 552 states and 1361 transitions. Second operand 8 states. [2018-07-23 15:15:38,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:38,383 INFO L93 Difference]: Finished difference Result 1192 states and 2790 transitions. [2018-07-23 15:15:38,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:15:38,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-23 15:15:38,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:38,387 INFO L225 Difference]: With dead ends: 1192 [2018-07-23 15:15:38,387 INFO L226 Difference]: Without dead ends: 1184 [2018-07-23 15:15:38,388 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:15:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2018-07-23 15:15:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 602. [2018-07-23 15:15:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2018-07-23 15:15:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1488 transitions. [2018-07-23 15:15:38,882 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1488 transitions. Word has length 12 [2018-07-23 15:15:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:38,882 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 1488 transitions. [2018-07-23 15:15:38,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1488 transitions. [2018-07-23 15:15:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-23 15:15:38,883 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:38,883 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:38,884 INFO L414 AbstractCegarLoop]: === Iteration 25 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:38,884 INFO L82 PathProgramCache]: Analyzing trace with hash 308305537, now seen corresponding path program 1 times [2018-07-23 15:15:38,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:38,889 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:38,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 15:15:38,889 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:15:38,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:15:38,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:15:38,890 INFO L87 Difference]: Start difference. First operand 602 states and 1488 transitions. Second operand 5 states. [2018-07-23 15:15:39,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:39,517 INFO L93 Difference]: Finished difference Result 1139 states and 2816 transitions. [2018-07-23 15:15:39,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:15:39,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-07-23 15:15:39,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:39,519 INFO L225 Difference]: With dead ends: 1139 [2018-07-23 15:15:39,519 INFO L226 Difference]: Without dead ends: 625 [2018-07-23 15:15:39,521 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:39,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2018-07-23 15:15:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 602. [2018-07-23 15:15:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2018-07-23 15:15:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1415 transitions. [2018-07-23 15:15:40,033 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1415 transitions. Word has length 13 [2018-07-23 15:15:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:40,033 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 1415 transitions. [2018-07-23 15:15:40,033 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:15:40,033 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1415 transitions. [2018-07-23 15:15:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-23 15:15:40,034 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:40,034 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:40,034 INFO L414 AbstractCegarLoop]: === Iteration 26 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:40,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1757679849, now seen corresponding path program 1 times [2018-07-23 15:15:40,034 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:40,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:40,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:40,058 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:40,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:40,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:40,058 INFO L87 Difference]: Start difference. First operand 602 states and 1415 transitions. Second operand 9 states. [2018-07-23 15:15:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:41,348 INFO L93 Difference]: Finished difference Result 794 states and 1860 transitions. [2018-07-23 15:15:41,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:41,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2018-07-23 15:15:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:41,350 INFO L225 Difference]: With dead ends: 794 [2018-07-23 15:15:41,351 INFO L226 Difference]: Without dead ends: 789 [2018-07-23 15:15:41,351 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:15:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2018-07-23 15:15:42,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 664. [2018-07-23 15:15:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2018-07-23 15:15:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1563 transitions. [2018-07-23 15:15:42,203 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1563 transitions. Word has length 13 [2018-07-23 15:15:42,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:42,204 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1563 transitions. [2018-07-23 15:15:42,204 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:42,204 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1563 transitions. [2018-07-23 15:15:42,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-23 15:15:42,205 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:42,205 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:42,205 INFO L414 AbstractCegarLoop]: === Iteration 27 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:42,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1161218619, now seen corresponding path program 1 times [2018-07-23 15:15:42,205 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:42,212 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:42,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 15:15:42,213 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:15:42,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:15:42,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:15:42,213 INFO L87 Difference]: Start difference. First operand 664 states and 1563 transitions. Second operand 5 states. [2018-07-23 15:15:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:43,061 INFO L93 Difference]: Finished difference Result 1317 states and 3113 transitions. [2018-07-23 15:15:43,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 15:15:43,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-07-23 15:15:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:43,063 INFO L225 Difference]: With dead ends: 1317 [2018-07-23 15:15:43,063 INFO L226 Difference]: Without dead ends: 729 [2018-07-23 15:15:43,064 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2018-07-23 15:15:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 690. [2018-07-23 15:15:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2018-07-23 15:15:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1556 transitions. [2018-07-23 15:15:43,738 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1556 transitions. Word has length 13 [2018-07-23 15:15:43,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:43,738 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1556 transitions. [2018-07-23 15:15:43,739 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:15:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1556 transitions. [2018-07-23 15:15:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:15:43,740 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:43,740 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:43,740 INFO L414 AbstractCegarLoop]: === Iteration 28 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:43,740 INFO L82 PathProgramCache]: Analyzing trace with hash -942981820, now seen corresponding path program 1 times [2018-07-23 15:15:43,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:43,751 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:43,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:43,751 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:43,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:43,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:43,752 INFO L87 Difference]: Start difference. First operand 690 states and 1556 transitions. Second operand 8 states. [2018-07-23 15:15:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:45,812 INFO L93 Difference]: Finished difference Result 1435 states and 3122 transitions. [2018-07-23 15:15:45,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:15:45,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:15:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:45,815 INFO L225 Difference]: With dead ends: 1435 [2018-07-23 15:15:45,816 INFO L226 Difference]: Without dead ends: 1427 [2018-07-23 15:15:45,816 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:15:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2018-07-23 15:15:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 789. [2018-07-23 15:15:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2018-07-23 15:15:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1779 transitions. [2018-07-23 15:15:46,553 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1779 transitions. Word has length 16 [2018-07-23 15:15:46,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:46,553 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1779 transitions. [2018-07-23 15:15:46,553 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1779 transitions. [2018-07-23 15:15:46,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:15:46,554 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:46,554 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:46,554 INFO L414 AbstractCegarLoop]: === Iteration 29 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:46,554 INFO L82 PathProgramCache]: Analyzing trace with hash -945782174, now seen corresponding path program 1 times [2018-07-23 15:15:46,554 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:46,562 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:46,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:46,563 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:46,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:46,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:46,564 INFO L87 Difference]: Start difference. First operand 789 states and 1779 transitions. Second operand 8 states. [2018-07-23 15:15:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:48,334 INFO L93 Difference]: Finished difference Result 1599 states and 3473 transitions. [2018-07-23 15:15:48,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:15:48,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:15:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:48,338 INFO L225 Difference]: With dead ends: 1599 [2018-07-23 15:15:48,338 INFO L226 Difference]: Without dead ends: 1591 [2018-07-23 15:15:48,339 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:15:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2018-07-23 15:15:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 821. [2018-07-23 15:15:49,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2018-07-23 15:15:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1853 transitions. [2018-07-23 15:15:49,299 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1853 transitions. Word has length 16 [2018-07-23 15:15:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,299 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1853 transitions. [2018-07-23 15:15:49,299 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1853 transitions. [2018-07-23 15:15:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:15:49,300 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,300 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:49,300 INFO L414 AbstractCegarLoop]: === Iteration 30 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:49,300 INFO L82 PathProgramCache]: Analyzing trace with hash -945680029, now seen corresponding path program 1 times [2018-07-23 15:15:49,300 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:49,309 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:49,310 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:49,310 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:49,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:49,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:49,311 INFO L87 Difference]: Start difference. First operand 821 states and 1853 transitions. Second operand 8 states. [2018-07-23 15:15:50,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:50,847 INFO L93 Difference]: Finished difference Result 1411 states and 3060 transitions. [2018-07-23 15:15:50,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:15:50,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:15:50,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:50,851 INFO L225 Difference]: With dead ends: 1411 [2018-07-23 15:15:50,851 INFO L226 Difference]: Without dead ends: 1403 [2018-07-23 15:15:50,852 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2018-07-23 15:15:51,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 823. [2018-07-23 15:15:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2018-07-23 15:15:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1851 transitions. [2018-07-23 15:15:51,808 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1851 transitions. Word has length 16 [2018-07-23 15:15:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:51,808 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 1851 transitions. [2018-07-23 15:15:51,808 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1851 transitions. [2018-07-23 15:15:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:15:51,809 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:51,809 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:51,809 INFO L414 AbstractCegarLoop]: === Iteration 31 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:51,810 INFO L82 PathProgramCache]: Analyzing trace with hash -648408412, now seen corresponding path program 1 times [2018-07-23 15:15:51,811 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:51,818 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:51,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:51,819 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:51,819 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:51,819 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:51,819 INFO L87 Difference]: Start difference. First operand 823 states and 1851 transitions. Second operand 8 states. [2018-07-23 15:15:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:53,545 INFO L93 Difference]: Finished difference Result 1490 states and 3255 transitions. [2018-07-23 15:15:53,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:15:53,545 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:15:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:53,547 INFO L225 Difference]: With dead ends: 1490 [2018-07-23 15:15:53,547 INFO L226 Difference]: Without dead ends: 1482 [2018-07-23 15:15:53,548 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:15:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2018-07-23 15:15:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 943. [2018-07-23 15:15:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2018-07-23 15:15:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 2141 transitions. [2018-07-23 15:15:54,404 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 2141 transitions. Word has length 16 [2018-07-23 15:15:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:54,404 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 2141 transitions. [2018-07-23 15:15:54,404 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 2141 transitions. [2018-07-23 15:15:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:15:54,405 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:54,405 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:54,405 INFO L414 AbstractCegarLoop]: === Iteration 32 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:54,406 INFO L82 PathProgramCache]: Analyzing trace with hash -648306267, now seen corresponding path program 1 times [2018-07-23 15:15:54,406 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:54,414 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:54,414 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:54,414 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:54,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:54,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:54,416 INFO L87 Difference]: Start difference. First operand 943 states and 2141 transitions. Second operand 8 states. [2018-07-23 15:15:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:55,990 INFO L93 Difference]: Finished difference Result 1427 states and 3102 transitions. [2018-07-23 15:15:55,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:15:55,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:15:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:55,992 INFO L225 Difference]: With dead ends: 1427 [2018-07-23 15:15:55,992 INFO L226 Difference]: Without dead ends: 1419 [2018-07-23 15:15:55,993 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:15:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2018-07-23 15:15:56,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 927. [2018-07-23 15:15:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2018-07-23 15:15:56,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 2109 transitions. [2018-07-23 15:15:56,891 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 2109 transitions. Word has length 16 [2018-07-23 15:15:56,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:56,892 INFO L471 AbstractCegarLoop]: Abstraction has 927 states and 2109 transitions. [2018-07-23 15:15:56,892 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:56,892 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 2109 transitions. [2018-07-23 15:15:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:15:56,892 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:56,892 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:56,893 INFO L414 AbstractCegarLoop]: === Iteration 33 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:56,893 INFO L82 PathProgramCache]: Analyzing trace with hash -639392031, now seen corresponding path program 1 times [2018-07-23 15:15:56,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:56,899 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:56,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 15:15:56,899 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:56,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:56,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:56,900 INFO L87 Difference]: Start difference. First operand 927 states and 2109 transitions. Second operand 8 states. [2018-07-23 15:15:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:58,457 INFO L93 Difference]: Finished difference Result 1306 states and 2848 transitions. [2018-07-23 15:15:58,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:15:58,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:15:58,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:58,459 INFO L225 Difference]: With dead ends: 1306 [2018-07-23 15:15:58,459 INFO L226 Difference]: Without dead ends: 1298 [2018-07-23 15:15:58,460 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:15:58,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2018-07-23 15:15:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 986. [2018-07-23 15:15:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2018-07-23 15:15:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 2232 transitions. [2018-07-23 15:15:59,446 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 2232 transitions. Word has length 16 [2018-07-23 15:15:59,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:59,446 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 2232 transitions. [2018-07-23 15:15:59,446 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 2232 transitions. [2018-07-23 15:15:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:15:59,447 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:59,447 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:59,447 INFO L414 AbstractCegarLoop]: === Iteration 34 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:15:59,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1639330009, now seen corresponding path program 1 times [2018-07-23 15:15:59,448 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:15:59,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:59,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:59,455 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:59,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:59,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:59,456 INFO L87 Difference]: Start difference. First operand 986 states and 2232 transitions. Second operand 8 states. [2018-07-23 15:16:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:00,862 INFO L93 Difference]: Finished difference Result 1285 states and 2841 transitions. [2018-07-23 15:16:00,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:16:00,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:16:00,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:00,864 INFO L225 Difference]: With dead ends: 1285 [2018-07-23 15:16:00,864 INFO L226 Difference]: Without dead ends: 1277 [2018-07-23 15:16:00,865 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:16:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2018-07-23 15:16:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 986. [2018-07-23 15:16:01,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2018-07-23 15:16:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 2231 transitions. [2018-07-23 15:16:01,918 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 2231 transitions. Word has length 16 [2018-07-23 15:16:01,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:01,918 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 2231 transitions. [2018-07-23 15:16:01,918 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:01,918 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 2231 transitions. [2018-07-23 15:16:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:01,919 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:01,919 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:01,919 INFO L414 AbstractCegarLoop]: === Iteration 35 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:01,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1609777337, now seen corresponding path program 1 times [2018-07-23 15:16:01,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:16:01,927 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:01,927 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:16:01,927 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:01,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:01,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:01,928 INFO L87 Difference]: Start difference. First operand 986 states and 2231 transitions. Second operand 8 states. [2018-07-23 15:16:03,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:03,647 INFO L93 Difference]: Finished difference Result 1518 states and 3315 transitions. [2018-07-23 15:16:03,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-23 15:16:03,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:16:03,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:03,649 INFO L225 Difference]: With dead ends: 1518 [2018-07-23 15:16:03,650 INFO L226 Difference]: Without dead ends: 1510 [2018-07-23 15:16:03,650 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:16:03,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2018-07-23 15:16:04,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 977. [2018-07-23 15:16:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2018-07-23 15:16:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2210 transitions. [2018-07-23 15:16:04,656 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2210 transitions. Word has length 16 [2018-07-23 15:16:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:04,656 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 2210 transitions. [2018-07-23 15:16:04,656 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2210 transitions. [2018-07-23 15:16:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:04,657 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:04,657 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:04,657 INFO L414 AbstractCegarLoop]: === Iteration 36 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:04,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1612577691, now seen corresponding path program 1 times [2018-07-23 15:16:04,657 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:16:04,664 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:04,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:16:04,665 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:04,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:04,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:04,665 INFO L87 Difference]: Start difference. First operand 977 states and 2210 transitions. Second operand 8 states. [2018-07-23 15:16:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:06,447 INFO L93 Difference]: Finished difference Result 1448 states and 3170 transitions. [2018-07-23 15:16:06,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:16:06,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:16:06,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:06,449 INFO L225 Difference]: With dead ends: 1448 [2018-07-23 15:16:06,449 INFO L226 Difference]: Without dead ends: 1440 [2018-07-23 15:16:06,449 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:16:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2018-07-23 15:16:07,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 941. [2018-07-23 15:16:07,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2018-07-23 15:16:07,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2120 transitions. [2018-07-23 15:16:07,434 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2120 transitions. Word has length 16 [2018-07-23 15:16:07,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:07,435 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 2120 transitions. [2018-07-23 15:16:07,435 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2120 transitions. [2018-07-23 15:16:07,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:07,435 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:07,436 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:07,436 INFO L414 AbstractCegarLoop]: === Iteration 37 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:07,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1612475546, now seen corresponding path program 1 times [2018-07-23 15:16:07,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:16:07,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:07,443 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:16:07,443 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:07,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:07,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:07,444 INFO L87 Difference]: Start difference. First operand 941 states and 2120 transitions. Second operand 8 states. [2018-07-23 15:16:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:08,907 INFO L93 Difference]: Finished difference Result 1254 states and 2743 transitions. [2018-07-23 15:16:08,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:16:08,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-23 15:16:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:08,909 INFO L225 Difference]: With dead ends: 1254 [2018-07-23 15:16:08,909 INFO L226 Difference]: Without dead ends: 1246 [2018-07-23 15:16:08,909 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:16:08,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2018-07-23 15:16:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 896. [2018-07-23 15:16:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2018-07-23 15:16:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2017 transitions. [2018-07-23 15:16:09,879 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2017 transitions. Word has length 16 [2018-07-23 15:16:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:09,880 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 2017 transitions. [2018-07-23 15:16:09,880 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:09,880 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2017 transitions. [2018-07-23 15:16:09,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:09,881 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:09,881 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:09,881 INFO L414 AbstractCegarLoop]: === Iteration 38 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:09,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1200558936, now seen corresponding path program 1 times [2018-07-23 15:16:09,881 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:09,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:09,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:09,889 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:09,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:09,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:09,890 INFO L87 Difference]: Start difference. First operand 896 states and 2017 transitions. Second operand 9 states. [2018-07-23 15:16:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:11,190 INFO L93 Difference]: Finished difference Result 1152 states and 2509 transitions. [2018-07-23 15:16:11,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:16:11,190 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:16:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:11,191 INFO L225 Difference]: With dead ends: 1152 [2018-07-23 15:16:11,191 INFO L226 Difference]: Without dead ends: 1144 [2018-07-23 15:16:11,192 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:16:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2018-07-23 15:16:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 970. [2018-07-23 15:16:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2018-07-23 15:16:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 2200 transitions. [2018-07-23 15:16:12,218 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 2200 transitions. Word has length 16 [2018-07-23 15:16:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:12,218 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 2200 transitions. [2018-07-23 15:16:12,218 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 2200 transitions. [2018-07-23 15:16:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:12,219 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:12,219 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:12,219 INFO L414 AbstractCegarLoop]: === Iteration 39 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:12,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1203257424, now seen corresponding path program 1 times [2018-07-23 15:16:12,220 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:12,230 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:12,230 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:12,230 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:12,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:12,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:12,231 INFO L87 Difference]: Start difference. First operand 970 states and 2200 transitions. Second operand 9 states. [2018-07-23 15:16:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:13,626 INFO L93 Difference]: Finished difference Result 1180 states and 2573 transitions. [2018-07-23 15:16:13,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:16:13,626 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:16:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:13,628 INFO L225 Difference]: With dead ends: 1180 [2018-07-23 15:16:13,628 INFO L226 Difference]: Without dead ends: 1172 [2018-07-23 15:16:13,628 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:16:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2018-07-23 15:16:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 948. [2018-07-23 15:16:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2018-07-23 15:16:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 2144 transitions. [2018-07-23 15:16:14,689 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 2144 transitions. Word has length 16 [2018-07-23 15:16:14,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:14,689 INFO L471 AbstractCegarLoop]: Abstraction has 948 states and 2144 transitions. [2018-07-23 15:16:14,689 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:14,689 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 2144 transitions. [2018-07-23 15:16:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:14,690 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:14,690 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:14,690 INFO L414 AbstractCegarLoop]: === Iteration 40 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:14,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1203257145, now seen corresponding path program 1 times [2018-07-23 15:16:14,691 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:14,699 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:14,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:14,700 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:14,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:14,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:14,701 INFO L87 Difference]: Start difference. First operand 948 states and 2144 transitions. Second operand 9 states. [2018-07-23 15:16:16,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:16,190 INFO L93 Difference]: Finished difference Result 1233 states and 2705 transitions. [2018-07-23 15:16:16,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:16:16,191 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:16:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:16,192 INFO L225 Difference]: With dead ends: 1233 [2018-07-23 15:16:16,192 INFO L226 Difference]: Without dead ends: 1225 [2018-07-23 15:16:16,193 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2018-07-23 15:16:16,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2018-07-23 15:16:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 966. [2018-07-23 15:16:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2018-07-23 15:16:17,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 2192 transitions. [2018-07-23 15:16:17,227 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 2192 transitions. Word has length 16 [2018-07-23 15:16:17,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:17,227 INFO L471 AbstractCegarLoop]: Abstraction has 966 states and 2192 transitions. [2018-07-23 15:16:17,227 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 2192 transitions. [2018-07-23 15:16:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:17,228 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:17,228 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:17,228 INFO L414 AbstractCegarLoop]: === Iteration 41 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:17,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2004746308, now seen corresponding path program 1 times [2018-07-23 15:16:17,229 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:17,236 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:17,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-23 15:16:17,237 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:17,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:17,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:17,238 INFO L87 Difference]: Start difference. First operand 966 states and 2192 transitions. Second operand 9 states. [2018-07-23 15:16:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:19,046 INFO L93 Difference]: Finished difference Result 1465 states and 3226 transitions. [2018-07-23 15:16:19,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:16:19,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:16:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:19,048 INFO L225 Difference]: With dead ends: 1465 [2018-07-23 15:16:19,048 INFO L226 Difference]: Without dead ends: 1457 [2018-07-23 15:16:19,048 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:16:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2018-07-23 15:16:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1013. [2018-07-23 15:16:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2018-07-23 15:16:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2297 transitions. [2018-07-23 15:16:20,154 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2297 transitions. Word has length 16 [2018-07-23 15:16:20,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:20,154 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 2297 transitions. [2018-07-23 15:16:20,154 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2297 transitions. [2018-07-23 15:16:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:20,155 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:20,155 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:20,155 INFO L414 AbstractCegarLoop]: === Iteration 42 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:20,155 INFO L82 PathProgramCache]: Analyzing trace with hash -35185992, now seen corresponding path program 1 times [2018-07-23 15:16:20,155 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:20,164 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:20,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-23 15:16:20,165 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:20,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:20,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:20,165 INFO L87 Difference]: Start difference. First operand 1013 states and 2297 transitions. Second operand 9 states. [2018-07-23 15:16:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:22,204 INFO L93 Difference]: Finished difference Result 1590 states and 3484 transitions. [2018-07-23 15:16:22,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:16:22,204 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:16:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:22,206 INFO L225 Difference]: With dead ends: 1590 [2018-07-23 15:16:22,206 INFO L226 Difference]: Without dead ends: 1582 [2018-07-23 15:16:22,207 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:16:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2018-07-23 15:16:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1020. [2018-07-23 15:16:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2018-07-23 15:16:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 2311 transitions. [2018-07-23 15:16:23,336 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 2311 transitions. Word has length 16 [2018-07-23 15:16:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:23,336 INFO L471 AbstractCegarLoop]: Abstraction has 1020 states and 2311 transitions. [2018-07-23 15:16:23,336 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 2311 transitions. [2018-07-23 15:16:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:23,337 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:23,337 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:23,337 INFO L414 AbstractCegarLoop]: === Iteration 43 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:23,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1174622531, now seen corresponding path program 1 times [2018-07-23 15:16:23,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:23,345 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:23,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:23,346 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:23,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:23,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:23,346 INFO L87 Difference]: Start difference. First operand 1020 states and 2311 transitions. Second operand 9 states. [2018-07-23 15:16:25,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:25,238 INFO L93 Difference]: Finished difference Result 1429 states and 3130 transitions. [2018-07-23 15:16:25,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:16:25,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:16:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:25,240 INFO L225 Difference]: With dead ends: 1429 [2018-07-23 15:16:25,241 INFO L226 Difference]: Without dead ends: 1421 [2018-07-23 15:16:25,241 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:16:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2018-07-23 15:16:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1031. [2018-07-23 15:16:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2018-07-23 15:16:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 2337 transitions. [2018-07-23 15:16:26,499 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 2337 transitions. Word has length 16 [2018-07-23 15:16:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:26,499 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 2337 transitions. [2018-07-23 15:16:26,499 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:26,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 2337 transitions. [2018-07-23 15:16:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:26,500 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:26,500 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:26,500 INFO L414 AbstractCegarLoop]: === Iteration 44 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:26,500 INFO L82 PathProgramCache]: Analyzing trace with hash 913888237, now seen corresponding path program 1 times [2018-07-23 15:16:26,501 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:26,507 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:16:26,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-23 15:16:26,508 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:26,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:26,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:26,508 INFO L87 Difference]: Start difference. First operand 1031 states and 2337 transitions. Second operand 9 states. [2018-07-23 15:16:28,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:28,311 INFO L93 Difference]: Finished difference Result 1420 states and 3128 transitions. [2018-07-23 15:16:28,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:16:28,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:16:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:28,313 INFO L225 Difference]: With dead ends: 1420 [2018-07-23 15:16:28,313 INFO L226 Difference]: Without dead ends: 1412 [2018-07-23 15:16:28,314 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:16:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2018-07-23 15:16:29,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 963. [2018-07-23 15:16:29,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2018-07-23 15:16:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 2173 transitions. [2018-07-23 15:16:29,456 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 2173 transitions. Word has length 16 [2018-07-23 15:16:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:29,456 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 2173 transitions. [2018-07-23 15:16:29,457 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:29,457 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 2173 transitions. [2018-07-23 15:16:29,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:29,457 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:29,457 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:29,457 INFO L414 AbstractCegarLoop]: === Iteration 45 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:29,457 INFO L82 PathProgramCache]: Analyzing trace with hash 2123696760, now seen corresponding path program 1 times [2018-07-23 15:16:29,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:29,465 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:29,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:29,465 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:29,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:29,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:29,466 INFO L87 Difference]: Start difference. First operand 963 states and 2173 transitions. Second operand 9 states. [2018-07-23 15:16:31,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:31,368 INFO L93 Difference]: Finished difference Result 1426 states and 3132 transitions. [2018-07-23 15:16:31,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:16:31,368 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:16:31,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:31,370 INFO L225 Difference]: With dead ends: 1426 [2018-07-23 15:16:31,370 INFO L226 Difference]: Without dead ends: 1418 [2018-07-23 15:16:31,371 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:16:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2018-07-23 15:16:32,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 956. [2018-07-23 15:16:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2018-07-23 15:16:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2159 transitions. [2018-07-23 15:16:32,592 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2159 transitions. Word has length 16 [2018-07-23 15:16:32,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:32,592 INFO L471 AbstractCegarLoop]: Abstraction has 956 states and 2159 transitions. [2018-07-23 15:16:32,592 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2159 transitions. [2018-07-23 15:16:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 15:16:32,593 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:32,593 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:32,593 INFO L414 AbstractCegarLoop]: === Iteration 46 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:32,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1400694311, now seen corresponding path program 1 times [2018-07-23 15:16:32,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:32,602 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:32,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:32,602 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:32,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:32,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:32,602 INFO L87 Difference]: Start difference. First operand 956 states and 2159 transitions. Second operand 9 states. [2018-07-23 15:16:34,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:34,193 INFO L93 Difference]: Finished difference Result 1172 states and 2569 transitions. [2018-07-23 15:16:34,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:16:34,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-23 15:16:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:34,195 INFO L225 Difference]: With dead ends: 1172 [2018-07-23 15:16:34,195 INFO L226 Difference]: Without dead ends: 1164 [2018-07-23 15:16:34,196 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2018-07-23 15:16:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2018-07-23 15:16:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 856. [2018-07-23 15:16:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2018-07-23 15:16:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1928 transitions. [2018-07-23 15:16:35,177 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1928 transitions. Word has length 16 [2018-07-23 15:16:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:35,177 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1928 transitions. [2018-07-23 15:16:35,177 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1928 transitions. [2018-07-23 15:16:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-23 15:16:35,178 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:35,178 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:35,178 INFO L414 AbstractCegarLoop]: === Iteration 47 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:35,178 INFO L82 PathProgramCache]: Analyzing trace with hash 417107387, now seen corresponding path program 1 times [2018-07-23 15:16:35,178 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:35,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:35,187 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:35,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:16:35,188 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:35,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:35,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:35,188 INFO L87 Difference]: Start difference. First operand 856 states and 1928 transitions. Second operand 8 states. [2018-07-23 15:16:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:36,881 INFO L93 Difference]: Finished difference Result 1295 states and 2858 transitions. [2018-07-23 15:16:36,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:16:36,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-07-23 15:16:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:36,883 INFO L225 Difference]: With dead ends: 1295 [2018-07-23 15:16:36,883 INFO L226 Difference]: Without dead ends: 1290 [2018-07-23 15:16:36,883 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:16:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2018-07-23 15:16:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1017. [2018-07-23 15:16:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2018-07-23 15:16:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2270 transitions. [2018-07-23 15:16:38,145 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2270 transitions. Word has length 17 [2018-07-23 15:16:38,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:38,145 INFO L471 AbstractCegarLoop]: Abstraction has 1017 states and 2270 transitions. [2018-07-23 15:16:38,145 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:38,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2270 transitions. [2018-07-23 15:16:38,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-23 15:16:38,146 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:38,146 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:38,146 INFO L414 AbstractCegarLoop]: === Iteration 48 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:38,146 INFO L82 PathProgramCache]: Analyzing trace with hash 524852653, now seen corresponding path program 1 times [2018-07-23 15:16:38,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:38,158 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:38,158 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:16:38,158 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:16:38,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:16:38,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:16:38,159 INFO L87 Difference]: Start difference. First operand 1017 states and 2270 transitions. Second operand 11 states. [2018-07-23 15:16:40,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:40,667 INFO L93 Difference]: Finished difference Result 1730 states and 3766 transitions. [2018-07-23 15:16:40,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:16:40,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-07-23 15:16:40,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:40,669 INFO L225 Difference]: With dead ends: 1730 [2018-07-23 15:16:40,669 INFO L226 Difference]: Without dead ends: 1722 [2018-07-23 15:16:40,670 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=373, Invalid=959, Unknown=0, NotChecked=0, Total=1332 [2018-07-23 15:16:40,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2018-07-23 15:16:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1463. [2018-07-23 15:16:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2018-07-23 15:16:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 3272 transitions. [2018-07-23 15:16:42,465 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 3272 transitions. Word has length 17 [2018-07-23 15:16:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:42,465 INFO L471 AbstractCegarLoop]: Abstraction has 1463 states and 3272 transitions. [2018-07-23 15:16:42,465 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:16:42,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 3272 transitions. [2018-07-23 15:16:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:16:42,466 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:42,467 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:42,467 INFO L414 AbstractCegarLoop]: === Iteration 49 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:42,467 INFO L82 PathProgramCache]: Analyzing trace with hash -405945350, now seen corresponding path program 1 times [2018-07-23 15:16:42,467 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:42,478 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:42,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:16:42,479 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:16:42,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:16:42,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:16:42,479 INFO L87 Difference]: Start difference. First operand 1463 states and 3272 transitions. Second operand 12 states. [2018-07-23 15:16:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:45,738 INFO L93 Difference]: Finished difference Result 2244 states and 4948 transitions. [2018-07-23 15:16:45,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:16:45,738 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-23 15:16:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:45,741 INFO L225 Difference]: With dead ends: 2244 [2018-07-23 15:16:45,741 INFO L226 Difference]: Without dead ends: 2236 [2018-07-23 15:16:45,742 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:16:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2018-07-23 15:16:47,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1750. [2018-07-23 15:16:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2018-07-23 15:16:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 3957 transitions. [2018-07-23 15:16:47,696 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 3957 transitions. Word has length 20 [2018-07-23 15:16:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:47,696 INFO L471 AbstractCegarLoop]: Abstraction has 1750 states and 3957 transitions. [2018-07-23 15:16:47,696 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:16:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 3957 transitions. [2018-07-23 15:16:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:16:47,697 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:47,698 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:47,698 INFO L414 AbstractCegarLoop]: === Iteration 50 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:47,698 INFO L82 PathProgramCache]: Analyzing trace with hash -408643838, now seen corresponding path program 1 times [2018-07-23 15:16:47,698 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:47,712 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:47,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:16:47,712 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:16:47,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:16:47,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:16:47,713 INFO L87 Difference]: Start difference. First operand 1750 states and 3957 transitions. Second operand 12 states. [2018-07-23 15:16:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:51,202 INFO L93 Difference]: Finished difference Result 2632 states and 5780 transitions. [2018-07-23 15:16:51,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:16:51,202 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-23 15:16:51,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:51,205 INFO L225 Difference]: With dead ends: 2632 [2018-07-23 15:16:51,205 INFO L226 Difference]: Without dead ends: 2624 [2018-07-23 15:16:51,206 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=314, Invalid=1578, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:16:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2018-07-23 15:16:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1762. [2018-07-23 15:16:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2018-07-23 15:16:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 3981 transitions. [2018-07-23 15:16:53,169 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 3981 transitions. Word has length 20 [2018-07-23 15:16:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:53,169 INFO L471 AbstractCegarLoop]: Abstraction has 1762 states and 3981 transitions. [2018-07-23 15:16:53,169 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:16:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 3981 transitions. [2018-07-23 15:16:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:16:53,171 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:53,171 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:53,171 INFO L414 AbstractCegarLoop]: === Iteration 51 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:53,171 INFO L82 PathProgramCache]: Analyzing trace with hash -408643559, now seen corresponding path program 1 times [2018-07-23 15:16:53,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:53,185 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:53,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:16:53,186 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:16:53,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:16:53,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:16:53,186 INFO L87 Difference]: Start difference. First operand 1762 states and 3981 transitions. Second operand 12 states. [2018-07-23 15:16:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:57,026 INFO L93 Difference]: Finished difference Result 2682 states and 5922 transitions. [2018-07-23 15:16:57,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-23 15:16:57,026 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-23 15:16:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:57,030 INFO L225 Difference]: With dead ends: 2682 [2018-07-23 15:16:57,030 INFO L226 Difference]: Without dead ends: 2674 [2018-07-23 15:16:57,031 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=374, Invalid=2076, Unknown=0, NotChecked=0, Total=2450 [2018-07-23 15:16:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2018-07-23 15:16:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1808. [2018-07-23 15:16:59,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2018-07-23 15:16:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 4093 transitions. [2018-07-23 15:16:59,071 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 4093 transitions. Word has length 20 [2018-07-23 15:16:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:59,072 INFO L471 AbstractCegarLoop]: Abstraction has 1808 states and 4093 transitions. [2018-07-23 15:16:59,072 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:16:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 4093 transitions. [2018-07-23 15:16:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:16:59,073 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:59,073 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:59,074 INFO L414 AbstractCegarLoop]: === Iteration 52 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:16:59,074 INFO L82 PathProgramCache]: Analyzing trace with hash 822945893, now seen corresponding path program 1 times [2018-07-23 15:16:59,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:59,086 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:59,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:16:59,086 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:16:59,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:16:59,086 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:16:59,087 INFO L87 Difference]: Start difference. First operand 1808 states and 4093 transitions. Second operand 12 states. [2018-07-23 15:17:02,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:02,937 INFO L93 Difference]: Finished difference Result 2725 states and 5993 transitions. [2018-07-23 15:17:02,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-23 15:17:02,937 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-23 15:17:02,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:02,940 INFO L225 Difference]: With dead ends: 2725 [2018-07-23 15:17:02,940 INFO L226 Difference]: Without dead ends: 2717 [2018-07-23 15:17:02,941 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=344, Invalid=1548, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:17:02,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2018-07-23 15:17:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 1923. [2018-07-23 15:17:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1923 states. [2018-07-23 15:17:05,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 4343 transitions. [2018-07-23 15:17:05,140 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 4343 transitions. Word has length 20 [2018-07-23 15:17:05,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:05,140 INFO L471 AbstractCegarLoop]: Abstraction has 1923 states and 4343 transitions. [2018-07-23 15:17:05,140 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:17:05,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 4343 transitions. [2018-07-23 15:17:05,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:17:05,141 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:05,141 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:05,141 INFO L414 AbstractCegarLoop]: === Iteration 53 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:05,141 INFO L82 PathProgramCache]: Analyzing trace with hash 822946172, now seen corresponding path program 1 times [2018-07-23 15:17:05,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:05,152 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:05,152 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:17:05,152 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:17:05,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:17:05,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:17:05,152 INFO L87 Difference]: Start difference. First operand 1923 states and 4343 transitions. Second operand 12 states. [2018-07-23 15:17:09,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:09,587 INFO L93 Difference]: Finished difference Result 2981 states and 6573 transitions. [2018-07-23 15:17:09,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-23 15:17:09,587 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-23 15:17:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:09,591 INFO L225 Difference]: With dead ends: 2981 [2018-07-23 15:17:09,591 INFO L226 Difference]: Without dead ends: 2973 [2018-07-23 15:17:09,592 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=491, Invalid=2701, Unknown=0, NotChecked=0, Total=3192 [2018-07-23 15:17:09,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2018-07-23 15:17:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1885. [2018-07-23 15:17:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2018-07-23 15:17:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 4258 transitions. [2018-07-23 15:17:11,820 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 4258 transitions. Word has length 20 [2018-07-23 15:17:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:11,820 INFO L471 AbstractCegarLoop]: Abstraction has 1885 states and 4258 transitions. [2018-07-23 15:17:11,820 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:17:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 4258 transitions. [2018-07-23 15:17:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:17:11,821 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:11,821 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:11,822 INFO L414 AbstractCegarLoop]: === Iteration 54 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:11,822 INFO L82 PathProgramCache]: Analyzing trace with hash 826825729, now seen corresponding path program 1 times [2018-07-23 15:17:11,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:11,831 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:11,831 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:17:11,832 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:17:11,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:17:11,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:17:11,832 INFO L87 Difference]: Start difference. First operand 1885 states and 4258 transitions. Second operand 12 states. [2018-07-23 15:17:16,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:16,034 INFO L93 Difference]: Finished difference Result 2756 states and 6082 transitions. [2018-07-23 15:17:16,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-23 15:17:16,034 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-23 15:17:16,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:16,038 INFO L225 Difference]: With dead ends: 2756 [2018-07-23 15:17:16,038 INFO L226 Difference]: Without dead ends: 2748 [2018-07-23 15:17:16,039 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=456, Invalid=2406, Unknown=0, NotChecked=0, Total=2862 [2018-07-23 15:17:16,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2018-07-23 15:17:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2013. [2018-07-23 15:17:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2013 states. [2018-07-23 15:17:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 4552 transitions. [2018-07-23 15:17:18,552 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 4552 transitions. Word has length 20 [2018-07-23 15:17:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:18,552 INFO L471 AbstractCegarLoop]: Abstraction has 2013 states and 4552 transitions. [2018-07-23 15:17:18,552 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:17:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 4552 transitions. [2018-07-23 15:17:18,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:17:18,553 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:18,553 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:18,553 INFO L414 AbstractCegarLoop]: === Iteration 55 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:18,553 INFO L82 PathProgramCache]: Analyzing trace with hash 89905005, now seen corresponding path program 1 times [2018-07-23 15:17:18,553 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:17:18,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:18,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:17:18,564 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:17:18,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:17:18,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:17:18,565 INFO L87 Difference]: Start difference. First operand 2013 states and 4552 transitions. Second operand 10 states. [2018-07-23 15:17:21,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:21,755 INFO L93 Difference]: Finished difference Result 2560 states and 5727 transitions. [2018-07-23 15:17:21,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:17:21,755 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-07-23 15:17:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:21,758 INFO L225 Difference]: With dead ends: 2560 [2018-07-23 15:17:21,759 INFO L226 Difference]: Without dead ends: 2552 [2018-07-23 15:17:21,759 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:17:21,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2018-07-23 15:17:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2037. [2018-07-23 15:17:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2037 states. [2018-07-23 15:17:24,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 4589 transitions. [2018-07-23 15:17:24,309 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 4589 transitions. Word has length 20 [2018-07-23 15:17:24,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:24,309 INFO L471 AbstractCegarLoop]: Abstraction has 2037 states and 4589 transitions. [2018-07-23 15:17:24,309 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:17:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 4589 transitions. [2018-07-23 15:17:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:17:24,310 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:24,311 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:24,311 INFO L414 AbstractCegarLoop]: === Iteration 56 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 89905284, now seen corresponding path program 1 times [2018-07-23 15:17:24,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:17:24,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:24,322 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:17:24,322 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:17:24,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:17:24,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:17:24,322 INFO L87 Difference]: Start difference. First operand 2037 states and 4589 transitions. Second operand 10 states. [2018-07-23 15:17:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:28,187 INFO L93 Difference]: Finished difference Result 2954 states and 6607 transitions. [2018-07-23 15:17:28,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-23 15:17:28,187 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-07-23 15:17:28,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:28,191 INFO L225 Difference]: With dead ends: 2954 [2018-07-23 15:17:28,191 INFO L226 Difference]: Without dead ends: 2946 [2018-07-23 15:17:28,192 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=215, Invalid=777, Unknown=0, NotChecked=0, Total=992 [2018-07-23 15:17:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2018-07-23 15:17:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2097. [2018-07-23 15:17:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2097 states. [2018-07-23 15:17:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 4733 transitions. [2018-07-23 15:17:30,813 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 4733 transitions. Word has length 20 [2018-07-23 15:17:30,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:30,813 INFO L471 AbstractCegarLoop]: Abstraction has 2097 states and 4733 transitions. [2018-07-23 15:17:30,813 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:17:30,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 4733 transitions. [2018-07-23 15:17:30,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:17:30,814 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:30,814 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:30,814 INFO L414 AbstractCegarLoop]: === Iteration 57 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:30,815 INFO L82 PathProgramCache]: Analyzing trace with hash 93784841, now seen corresponding path program 1 times [2018-07-23 15:17:30,815 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:17:30,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:30,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:17:30,822 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:17:30,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:17:30,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:17:30,823 INFO L87 Difference]: Start difference. First operand 2097 states and 4733 transitions. Second operand 10 states. [2018-07-23 15:17:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:34,684 INFO L93 Difference]: Finished difference Result 2943 states and 6561 transitions. [2018-07-23 15:17:34,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-23 15:17:34,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-07-23 15:17:34,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:34,689 INFO L225 Difference]: With dead ends: 2943 [2018-07-23 15:17:34,689 INFO L226 Difference]: Without dead ends: 2935 [2018-07-23 15:17:34,690 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:17:34,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2018-07-23 15:17:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2113. [2018-07-23 15:17:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2018-07-23 15:17:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 4769 transitions. [2018-07-23 15:17:37,307 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 4769 transitions. Word has length 20 [2018-07-23 15:17:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:37,307 INFO L471 AbstractCegarLoop]: Abstraction has 2113 states and 4769 transitions. [2018-07-23 15:17:37,307 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:17:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 4769 transitions. [2018-07-23 15:17:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:17:37,308 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:37,308 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:37,308 INFO L414 AbstractCegarLoop]: === Iteration 58 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:37,308 INFO L82 PathProgramCache]: Analyzing trace with hash 183366378, now seen corresponding path program 1 times [2018-07-23 15:17:37,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:17:37,316 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:37,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:17:37,316 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:17:37,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:17:37,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:17:37,317 INFO L87 Difference]: Start difference. First operand 2113 states and 4769 transitions. Second operand 10 states. [2018-07-23 15:17:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:41,449 INFO L93 Difference]: Finished difference Result 3095 states and 6879 transitions. [2018-07-23 15:17:41,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-23 15:17:41,449 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-07-23 15:17:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:41,452 INFO L225 Difference]: With dead ends: 3095 [2018-07-23 15:17:41,452 INFO L226 Difference]: Without dead ends: 3087 [2018-07-23 15:17:41,453 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=260, Invalid=1222, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:17:41,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2018-07-23 15:17:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 2233. [2018-07-23 15:17:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2233 states. [2018-07-23 15:17:44,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 5055 transitions. [2018-07-23 15:17:44,170 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 5055 transitions. Word has length 20 [2018-07-23 15:17:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:44,170 INFO L471 AbstractCegarLoop]: Abstraction has 2233 states and 5055 transitions. [2018-07-23 15:17:44,171 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:17:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 5055 transitions. [2018-07-23 15:17:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:17:44,172 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:44,172 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:44,172 INFO L414 AbstractCegarLoop]: === Iteration 59 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:44,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1435011527, now seen corresponding path program 1 times [2018-07-23 15:17:44,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:44,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:44,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:17:44,184 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:44,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:44,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:44,184 INFO L87 Difference]: Start difference. First operand 2233 states and 5055 transitions. Second operand 11 states. [2018-07-23 15:17:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:49,039 INFO L93 Difference]: Finished difference Result 3570 states and 7977 transitions. [2018-07-23 15:17:49,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-23 15:17:49,039 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-23 15:17:49,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:49,043 INFO L225 Difference]: With dead ends: 3570 [2018-07-23 15:17:49,043 INFO L226 Difference]: Without dead ends: 3562 [2018-07-23 15:17:49,044 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=291, Invalid=1601, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 15:17:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2018-07-23 15:17:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 2257. [2018-07-23 15:17:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2018-07-23 15:17:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 5109 transitions. [2018-07-23 15:17:51,816 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 5109 transitions. Word has length 20 [2018-07-23 15:17:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:51,816 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 5109 transitions. [2018-07-23 15:17:51,816 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 5109 transitions. [2018-07-23 15:17:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 15:17:51,818 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:51,818 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:51,818 INFO L414 AbstractCegarLoop]: === Iteration 60 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:51,818 INFO L82 PathProgramCache]: Analyzing trace with hash 777730375, now seen corresponding path program 1 times [2018-07-23 15:17:51,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:51,830 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:51,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:17:51,830 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:51,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:51,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:51,831 INFO L87 Difference]: Start difference. First operand 2257 states and 5109 transitions. Second operand 11 states. [2018-07-23 15:17:55,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:55,945 INFO L93 Difference]: Finished difference Result 2941 states and 6541 transitions. [2018-07-23 15:17:55,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-23 15:17:55,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-23 15:17:55,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:55,949 INFO L225 Difference]: With dead ends: 2941 [2018-07-23 15:17:55,949 INFO L226 Difference]: Without dead ends: 2933 [2018-07-23 15:17:55,949 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=258, Invalid=1224, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:17:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2018-07-23 15:17:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 2372. [2018-07-23 15:17:58,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2372 states. [2018-07-23 15:17:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 5350 transitions. [2018-07-23 15:17:58,903 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 5350 transitions. Word has length 20 [2018-07-23 15:17:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:58,903 INFO L471 AbstractCegarLoop]: Abstraction has 2372 states and 5350 transitions. [2018-07-23 15:17:58,903 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 5350 transitions. [2018-07-23 15:17:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 15:17:58,904 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:58,904 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:58,904 INFO L414 AbstractCegarLoop]: === Iteration 61 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:17:58,904 INFO L82 PathProgramCache]: Analyzing trace with hash 371911669, now seen corresponding path program 1 times [2018-07-23 15:17:58,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:58,914 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:58,914 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:17:58,914 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:58,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:58,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:58,914 INFO L87 Difference]: Start difference. First operand 2372 states and 5350 transitions. Second operand 11 states. [2018-07-23 15:18:03,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:03,687 INFO L93 Difference]: Finished difference Result 3102 states and 6851 transitions. [2018-07-23 15:18:03,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-23 15:18:03,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2018-07-23 15:18:03,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:03,691 INFO L225 Difference]: With dead ends: 3102 [2018-07-23 15:18:03,692 INFO L226 Difference]: Without dead ends: 3094 [2018-07-23 15:18:03,692 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2018-07-23 15:18:03,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2018-07-23 15:18:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 2548. [2018-07-23 15:18:07,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2548 states. [2018-07-23 15:18:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 5732 transitions. [2018-07-23 15:18:07,034 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 5732 transitions. Word has length 21 [2018-07-23 15:18:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:07,034 INFO L471 AbstractCegarLoop]: Abstraction has 2548 states and 5732 transitions. [2018-07-23 15:18:07,034 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:18:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 5732 transitions. [2018-07-23 15:18:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 15:18:07,035 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:07,035 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:07,035 INFO L414 AbstractCegarLoop]: === Iteration 62 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:18:07,035 INFO L82 PathProgramCache]: Analyzing trace with hash -377266403, now seen corresponding path program 1 times [2018-07-23 15:18:07,036 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:07,043 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:07,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:18:07,043 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:18:07,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:18:07,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:18:07,044 INFO L87 Difference]: Start difference. First operand 2548 states and 5732 transitions. Second operand 9 states. [2018-07-23 15:18:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:16,840 INFO L93 Difference]: Finished difference Result 9530 states and 21497 transitions. [2018-07-23 15:18:16,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:18:16,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-07-23 15:18:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:16,850 INFO L225 Difference]: With dead ends: 9530 [2018-07-23 15:18:16,850 INFO L226 Difference]: Without dead ends: 7258 [2018-07-23 15:18:16,854 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:18:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7258 states. [2018-07-23 15:18:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7258 to 5099. [2018-07-23 15:18:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5099 states. [2018-07-23 15:18:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 11597 transitions. [2018-07-23 15:18:23,871 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 11597 transitions. Word has length 21 [2018-07-23 15:18:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:23,871 INFO L471 AbstractCegarLoop]: Abstraction has 5099 states and 11597 transitions. [2018-07-23 15:18:23,871 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:18:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 11597 transitions. [2018-07-23 15:18:23,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:18:23,873 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:23,873 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:23,873 INFO L414 AbstractCegarLoop]: === Iteration 63 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:18:23,874 INFO L82 PathProgramCache]: Analyzing trace with hash 504785992, now seen corresponding path program 1 times [2018-07-23 15:18:23,874 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:23,881 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:23,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:18:23,882 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:18:23,882 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:18:23,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:18:23,882 INFO L87 Difference]: Start difference. First operand 5099 states and 11597 transitions. Second operand 9 states. [2018-07-23 15:18:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:39,516 INFO L93 Difference]: Finished difference Result 13824 states and 31502 transitions. [2018-07-23 15:18:39,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:18:39,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-07-23 15:18:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:39,531 INFO L225 Difference]: With dead ends: 13824 [2018-07-23 15:18:39,531 INFO L226 Difference]: Without dead ends: 12174 [2018-07-23 15:18:39,535 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2018-07-23 15:18:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12174 states. [2018-07-23 15:18:49,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12174 to 7081. [2018-07-23 15:18:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7081 states. [2018-07-23 15:18:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 15893 transitions. [2018-07-23 15:18:49,041 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 15893 transitions. Word has length 24 [2018-07-23 15:18:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:49,042 INFO L471 AbstractCegarLoop]: Abstraction has 7081 states and 15893 transitions. [2018-07-23 15:18:49,042 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:18:49,042 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 15893 transitions. [2018-07-23 15:18:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:18:49,045 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:49,046 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:49,046 INFO L414 AbstractCegarLoop]: === Iteration 64 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:18:49,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1269424552, now seen corresponding path program 1 times [2018-07-23 15:18:49,046 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:49,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:49,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:18:49,057 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:18:49,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:18:49,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:18:49,058 INFO L87 Difference]: Start difference. First operand 7081 states and 15893 transitions. Second operand 9 states. [2018-07-23 15:19:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:04,634 INFO L93 Difference]: Finished difference Result 14557 states and 32575 transitions. [2018-07-23 15:19:04,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:19:04,634 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-07-23 15:19:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:04,647 INFO L225 Difference]: With dead ends: 14557 [2018-07-23 15:19:04,647 INFO L226 Difference]: Without dead ends: 12252 [2018-07-23 15:19:04,653 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:19:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12252 states. [2018-07-23 15:19:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12252 to 7165. [2018-07-23 15:19:14,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7165 states. [2018-07-23 15:19:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7165 states to 7165 states and 16147 transitions. [2018-07-23 15:19:14,505 INFO L78 Accepts]: Start accepts. Automaton has 7165 states and 16147 transitions. Word has length 24 [2018-07-23 15:19:14,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:14,505 INFO L471 AbstractCegarLoop]: Abstraction has 7165 states and 16147 transitions. [2018-07-23 15:19:14,505 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:19:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 7165 states and 16147 transitions. [2018-07-23 15:19:14,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 15:19:14,509 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:14,509 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:19:14,509 INFO L414 AbstractCegarLoop]: === Iteration 65 === [productErr5AssertViolationASSERT, productErr12AssertViolationASSERT, productErr8AssertViolationASSERT, productErr7AssertViolationASSERT, productErr0AssertViolationASSERT, productErr4AssertViolationASSERT, productErr10AssertViolationASSERT, productErr2AssertViolationASSERT, productErr9AssertViolationASSERT, productErr6AssertViolationASSERT, productErr3AssertViolationASSERT, productErr13AssertViolationASSERT, productErr1AssertViolationASSERT, productErr11AssertViolationASSERT]=== [2018-07-23 15:19:14,509 INFO L82 PathProgramCache]: Analyzing trace with hash -277435291, now seen corresponding path program 1 times [2018-07-23 15:19:14,509 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:14,519 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:14,519 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:19:14,519 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:19:14,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:19:14,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:19:14,520 INFO L87 Difference]: Start difference. First operand 7165 states and 16147 transitions. Second operand 9 states. Received shutdown request... [2018-07-23 15:19:16,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:19:16,603 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 15:19:16,608 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 15:19:16,608 INFO L202 PluginConnector]: Adding new model threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:19:16 BoogieIcfgContainer [2018-07-23 15:19:16,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:19:16,609 INFO L168 Benchmark]: Toolchain (without parser) took 254173.15 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 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 502.6 MB. Max. memory is 7.1 GB. [2018-07-23 15:19:16,611 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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. [2018-07-23 15:19:16,611 INFO L168 Benchmark]: Boogie Preprocessor took 91.02 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. [2018-07-23 15:19:16,611 INFO L168 Benchmark]: RCFGBuilder took 457.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 15:19:16,612 INFO L168 Benchmark]: TraceAbstraction took 253620.35 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 492.1 MB. Max. memory is 7.1 GB. [2018-07-23 15:19:16,615 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 0.22 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 91.02 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 457.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253620.35 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 492.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 240]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 240). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 332]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 332). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 264]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 264). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 250]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 250). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 229]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 229). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 284]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 284). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 205]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 205). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 277]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 277). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 247]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 247). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 222]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 222). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 364]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 364). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 154). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 294]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 294). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (831 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 14 error locations. TIMEOUT Result, 253.5s OverallTime, 65 OverallIterations, 2 TraceHistogramMax, 162.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17129 SDtfs, 52298 SDslu, 60296 SDs, 0 SdLazy, 123699 SolverSat, 11393 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1879 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1676 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11808 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7165occurred in iteration=64, 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: 89.8s AutomataMinimizationTime, 64 MinimizatonAttempts, 43578 StatesRemovedByMinimization, 64 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1003 NumberOfCodeBlocks, 1003 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 938 ConstructedInterpolants, 0 QuantifiedInterpolants, 50035 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 65 InterpolantComputations, 35 PerfectInterpolantSequences, 39/124 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/threadpooling_out_Reals.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-19-16-626.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_out_Reals.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-19-16-626.csv Completed graceful shutdown