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_product_WithProcedures.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:15:25,891 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:15:25,895 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:15:25,912 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:15:25,912 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:15:25,914 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:15:25,915 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:15:25,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:15:25,918 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:15:25,919 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:15:25,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 15:15:25,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 15:15:25,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 15:15:25,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 15:15:25,923 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 15:15:25,924 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 15:15:25,925 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 15:15:25,927 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 15:15:25,929 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 15:15:25,930 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 15:15:25,932 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 15:15:25,933 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 15:15:25,936 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 15:15:25,936 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 15:15:25,936 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 15:15:25,937 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 15:15:25,938 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 15:15:25,939 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 15:15:25,940 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 15:15:25,941 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 15:15:25,941 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 15:15:25,942 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 15:15:25,945 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 15:15:25,959 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:15:25,959 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:15:25,961 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 15:15:25,961 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 15:15:25,961 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:15:25,961 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 15:15:25,961 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:15:25,962 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:15:26,035 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:15:26,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:15:26,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:15:26,067 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:15:26,068 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:15:26,069 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl [2018-07-23 15:15:26,069 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl' [2018-07-23 15:15:26,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:15:26,133 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:15:26,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:15:26,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:15:26,134 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:15:26,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:26" (1/1) ... [2018-07-23 15:15:26,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:26" (1/1) ... [2018-07-23 15:15:26,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:26" (1/1) ... [2018-07-23 15:15:26,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:26" (1/1) ... [2018-07-23 15:15:26,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:26" (1/1) ... [2018-07-23 15:15:26,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:26" (1/1) ... [2018-07-23 15:15:26,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:26" (1/1) ... [2018-07-23 15:15:26,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:15:26,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:15:26,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:15:26,184 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:15:26,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:26" (1/1) ... [2018-07-23 15:15:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure l0l0 [2018-07-23 15:15:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure l1l0 [2018-07-23 15:15:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure l0l1 [2018-07-23 15:15:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure l1l1 [2018-07-23 15:15:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 15:15:26,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 15:15:26,254 INFO L138 BoogieDeclarations]: Found implementation of procedure l0l0 [2018-07-23 15:15:26,254 INFO L138 BoogieDeclarations]: Found implementation of procedure l1l0 [2018-07-23 15:15:26,255 INFO L138 BoogieDeclarations]: Found implementation of procedure l0l1 [2018-07-23 15:15:26,255 INFO L138 BoogieDeclarations]: Found implementation of procedure l1l1 [2018-07-23 15:15:26,433 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 15:15:26,434 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:15:26 BoogieIcfgContainer [2018-07-23 15:15:26,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:15:26,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:15:26,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:15:26,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:15:26,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:15:26" (1/2) ... [2018-07-23 15:15:26,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7e8354 and model type threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:15:26, skipping insertion in model container [2018-07-23 15:15:26,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:15:26" (2/2) ... [2018-07-23 15:15:26,444 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product_WithProcedures.bpl [2018-07-23 15:15:26,455 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:15:26,464 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-07-23 15:15:26,517 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:15:26,518 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:15:26,519 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:15:26,519 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 15:15:26,519 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:15:26,519 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:15:26,520 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:15:26,520 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:15:26,520 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:15:26,540 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-07-23 15:15:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:26,552 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:26,553 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:26,554 INFO L414 AbstractCegarLoop]: === Iteration 1 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:26,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1282157605, now seen corresponding path program 1 times [2018-07-23 15:15:26,568 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:26,804 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 15:15:26,807 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:26,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 15:15:26,813 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:15:26,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:15:26,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:15:26,835 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2018-07-23 15:15:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:27,184 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2018-07-23 15:15:27,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:15:27,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-23 15:15:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:27,198 INFO L225 Difference]: With dead ends: 72 [2018-07-23 15:15:27,198 INFO L226 Difference]: Without dead ends: 70 [2018-07-23 15:15:27,202 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-23 15:15:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2018-07-23 15:15:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-23 15:15:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2018-07-23 15:15:27,253 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 7 [2018-07-23 15:15:27,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:27,253 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2018-07-23 15:15:27,253 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:15:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2018-07-23 15:15:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:15:27,255 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:27,255 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:27,255 INFO L414 AbstractCegarLoop]: === Iteration 2 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:27,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1272619553, now seen corresponding path program 1 times [2018-07-23 15:15:27,256 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:27,298 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 15:15:27,298 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:27,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 15:15:27,302 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:15:27,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:15:27,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:15:27,303 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2018-07-23 15:15:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:27,497 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2018-07-23 15:15:27,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:15:27,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-23 15:15:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:27,499 INFO L225 Difference]: With dead ends: 81 [2018-07-23 15:15:27,499 INFO L226 Difference]: Without dead ends: 79 [2018-07-23 15:15:27,501 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-23 15:15:27,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 57. [2018-07-23 15:15:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-23 15:15:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2018-07-23 15:15:27,518 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 7 [2018-07-23 15:15:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:27,518 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2018-07-23 15:15:27,519 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:15:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2018-07-23 15:15:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:15:27,520 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:27,520 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:27,521 INFO L414 AbstractCegarLoop]: === Iteration 3 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:27,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1601446133, now seen corresponding path program 1 times [2018-07-23 15:15:27,521 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:27,597 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 15:15:27,598 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:27,598 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 15:15:27,604 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:27,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:27,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:27,605 INFO L87 Difference]: Start difference. First operand 57 states and 78 transitions. Second operand 7 states. [2018-07-23 15:15:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:27,896 INFO L93 Difference]: Finished difference Result 122 states and 175 transitions. [2018-07-23 15:15:27,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:15:27,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-23 15:15:27,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:27,900 INFO L225 Difference]: With dead ends: 122 [2018-07-23 15:15:27,901 INFO L226 Difference]: Without dead ends: 120 [2018-07-23 15:15:27,902 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:15:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-23 15:15:27,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 73. [2018-07-23 15:15:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-23 15:15:27,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2018-07-23 15:15:27,937 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 103 transitions. Word has length 10 [2018-07-23 15:15:27,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:27,938 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 103 transitions. [2018-07-23 15:15:27,938 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:27,941 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 103 transitions. [2018-07-23 15:15:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 15:15:27,943 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:27,943 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:27,944 INFO L414 AbstractCegarLoop]: === Iteration 4 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:27,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1152651256, now seen corresponding path program 1 times [2018-07-23 15:15:27,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:27,986 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 15:15:27,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:27,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:15:27,988 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:27,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:27,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:27,989 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. Second operand 7 states. [2018-07-23 15:15:28,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:28,152 INFO L93 Difference]: Finished difference Result 143 states and 208 transitions. [2018-07-23 15:15:28,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:15:28,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-23 15:15:28,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:28,159 INFO L225 Difference]: With dead ends: 143 [2018-07-23 15:15:28,159 INFO L226 Difference]: Without dead ends: 141 [2018-07-23 15:15:28,162 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:15:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-23 15:15:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 85. [2018-07-23 15:15:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-23 15:15:28,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 122 transitions. [2018-07-23 15:15:28,208 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 122 transitions. Word has length 10 [2018-07-23 15:15:28,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:28,209 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 122 transitions. [2018-07-23 15:15:28,209 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 122 transitions. [2018-07-23 15:15:28,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-23 15:15:28,211 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:28,214 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:28,215 INFO L414 AbstractCegarLoop]: === Iteration 5 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:28,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1536370777, now seen corresponding path program 1 times [2018-07-23 15:15:28,215 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:28,248 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 15:15:28,248 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:28,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:15:28,251 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:15:28,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:15:28,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:15:28,252 INFO L87 Difference]: Start difference. First operand 85 states and 122 transitions. Second operand 6 states. [2018-07-23 15:15:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:28,385 INFO L93 Difference]: Finished difference Result 152 states and 223 transitions. [2018-07-23 15:15:28,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:15:28,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-07-23 15:15:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:28,388 INFO L225 Difference]: With dead ends: 152 [2018-07-23 15:15:28,391 INFO L226 Difference]: Without dead ends: 150 [2018-07-23 15:15:28,392 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:28,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-23 15:15:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 96. [2018-07-23 15:15:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-23 15:15:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2018-07-23 15:15:28,425 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 138 transitions. Word has length 11 [2018-07-23 15:15:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:28,425 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 138 transitions. [2018-07-23 15:15:28,426 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:15:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 138 transitions. [2018-07-23 15:15:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-23 15:15:28,432 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:28,435 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:28,435 INFO L414 AbstractCegarLoop]: === Iteration 6 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:28,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1150793287, now seen corresponding path program 1 times [2018-07-23 15:15:28,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:28,472 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 15:15:28,472 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:28,472 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 15:15:28,473 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:15:28,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:15:28,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-23 15:15:28,477 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. Second operand 6 states. [2018-07-23 15:15:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:28,604 INFO L93 Difference]: Finished difference Result 167 states and 245 transitions. [2018-07-23 15:15:28,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:15:28,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-07-23 15:15:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:28,607 INFO L225 Difference]: With dead ends: 167 [2018-07-23 15:15:28,607 INFO L226 Difference]: Without dead ends: 165 [2018-07-23 15:15:28,608 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-23 15:15:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 106. [2018-07-23 15:15:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-23 15:15:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 152 transitions. [2018-07-23 15:15:28,641 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 152 transitions. Word has length 11 [2018-07-23 15:15:28,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:28,641 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 152 transitions. [2018-07-23 15:15:28,641 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:15:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 152 transitions. [2018-07-23 15:15:28,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-23 15:15:28,643 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:28,644 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:28,644 INFO L414 AbstractCegarLoop]: === Iteration 7 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:28,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1829652612, now seen corresponding path program 1 times [2018-07-23 15:15:28,644 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:28,676 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 15:15:28,677 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:28,677 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:15:28,678 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:28,678 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:28,678 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:28,679 INFO L87 Difference]: Start difference. First operand 106 states and 152 transitions. Second operand 7 states. [2018-07-23 15:15:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:28,910 INFO L93 Difference]: Finished difference Result 241 states and 352 transitions. [2018-07-23 15:15:28,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:15:28,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-07-23 15:15:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:28,913 INFO L225 Difference]: With dead ends: 241 [2018-07-23 15:15:28,913 INFO L226 Difference]: Without dead ends: 239 [2018-07-23 15:15:28,914 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-23 15:15:28,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 151. [2018-07-23 15:15:28,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-23 15:15:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 221 transitions. [2018-07-23 15:15:28,953 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 221 transitions. Word has length 13 [2018-07-23 15:15:28,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:28,953 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 221 transitions. [2018-07-23 15:15:28,954 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 221 transitions. [2018-07-23 15:15:28,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-23 15:15:28,956 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:28,956 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:28,956 INFO L414 AbstractCegarLoop]: === Iteration 8 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:28,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1159232837, now seen corresponding path program 2 times [2018-07-23 15:15:28,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:28,996 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 15:15:28,996 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:28,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:28,997 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:28,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:28,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:28,998 INFO L87 Difference]: Start difference. First operand 151 states and 221 transitions. Second operand 8 states. [2018-07-23 15:15:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:29,278 INFO L93 Difference]: Finished difference Result 285 states and 419 transitions. [2018-07-23 15:15:29,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:15:29,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-07-23 15:15:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:29,281 INFO L225 Difference]: With dead ends: 285 [2018-07-23 15:15:29,281 INFO L226 Difference]: Without dead ends: 283 [2018-07-23 15:15:29,282 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:29,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-23 15:15:29,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 198. [2018-07-23 15:15:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-23 15:15:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 292 transitions. [2018-07-23 15:15:29,348 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 292 transitions. Word has length 13 [2018-07-23 15:15:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:29,349 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 292 transitions. [2018-07-23 15:15:29,349 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:29,349 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 292 transitions. [2018-07-23 15:15:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:29,351 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:29,351 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:29,351 INFO L414 AbstractCegarLoop]: === Iteration 9 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:29,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1433054771, now seen corresponding path program 1 times [2018-07-23 15:15:29,352 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:29,390 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 15:15:29,391 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:29,391 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:15:29,391 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:29,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:29,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:29,393 INFO L87 Difference]: Start difference. First operand 198 states and 292 transitions. Second operand 7 states. [2018-07-23 15:15:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:29,654 INFO L93 Difference]: Finished difference Result 374 states and 561 transitions. [2018-07-23 15:15:29,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:29,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-07-23 15:15:29,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:29,659 INFO L225 Difference]: With dead ends: 374 [2018-07-23 15:15:29,659 INFO L226 Difference]: Without dead ends: 372 [2018-07-23 15:15:29,660 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-23 15:15:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 242. [2018-07-23 15:15:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-23 15:15:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 361 transitions. [2018-07-23 15:15:29,741 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 361 transitions. Word has length 14 [2018-07-23 15:15:29,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:29,742 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 361 transitions. [2018-07-23 15:15:29,742 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:29,742 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 361 transitions. [2018-07-23 15:15:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:29,744 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:29,744 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:29,744 INFO L414 AbstractCegarLoop]: === Iteration 10 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1436992942, now seen corresponding path program 1 times [2018-07-23 15:15:29,745 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:29,781 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 15:15:29,782 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:29,782 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:29,782 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:29,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:29,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:29,783 INFO L87 Difference]: Start difference. First operand 242 states and 361 transitions. Second operand 8 states. [2018-07-23 15:15:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:30,080 INFO L93 Difference]: Finished difference Result 367 states and 555 transitions. [2018-07-23 15:15:30,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:30,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-23 15:15:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:30,083 INFO L225 Difference]: With dead ends: 367 [2018-07-23 15:15:30,083 INFO L226 Difference]: Without dead ends: 365 [2018-07-23 15:15:30,084 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:30,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-23 15:15:30,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 242. [2018-07-23 15:15:30,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-23 15:15:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 361 transitions. [2018-07-23 15:15:30,160 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 361 transitions. Word has length 14 [2018-07-23 15:15:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:30,160 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 361 transitions. [2018-07-23 15:15:30,160 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 361 transitions. [2018-07-23 15:15:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:30,162 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:30,162 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:30,162 INFO L414 AbstractCegarLoop]: === Iteration 11 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:30,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1436993326, now seen corresponding path program 1 times [2018-07-23 15:15:30,163 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:30,189 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 15:15:30,190 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:30,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:30,191 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:30,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:30,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:30,192 INFO L87 Difference]: Start difference. First operand 242 states and 361 transitions. Second operand 8 states. [2018-07-23 15:15:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:30,504 INFO L93 Difference]: Finished difference Result 408 states and 613 transitions. [2018-07-23 15:15:30,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:30,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-23 15:15:30,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:30,508 INFO L225 Difference]: With dead ends: 408 [2018-07-23 15:15:30,509 INFO L226 Difference]: Without dead ends: 406 [2018-07-23 15:15:30,510 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:30,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-23 15:15:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 274. [2018-07-23 15:15:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-23 15:15:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 411 transitions. [2018-07-23 15:15:30,616 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 411 transitions. Word has length 14 [2018-07-23 15:15:30,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:30,618 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 411 transitions. [2018-07-23 15:15:30,618 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:30,618 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 411 transitions. [2018-07-23 15:15:30,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:30,620 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:30,620 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:30,620 INFO L414 AbstractCegarLoop]: === Iteration 12 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:30,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1791986342, now seen corresponding path program 1 times [2018-07-23 15:15:30,622 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:30,653 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 15:15:30,654 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:30,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:30,654 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:30,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:30,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:30,656 INFO L87 Difference]: Start difference. First operand 274 states and 411 transitions. Second operand 8 states. [2018-07-23 15:15:31,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:31,026 INFO L93 Difference]: Finished difference Result 429 states and 646 transitions. [2018-07-23 15:15:31,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:31,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-23 15:15:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:31,029 INFO L225 Difference]: With dead ends: 429 [2018-07-23 15:15:31,030 INFO L226 Difference]: Without dead ends: 427 [2018-07-23 15:15:31,031 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-23 15:15:31,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 287. [2018-07-23 15:15:31,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-23 15:15:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 429 transitions. [2018-07-23 15:15:31,126 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 429 transitions. Word has length 14 [2018-07-23 15:15:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:31,127 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 429 transitions. [2018-07-23 15:15:31,127 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 429 transitions. [2018-07-23 15:15:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:31,129 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:31,129 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:31,129 INFO L414 AbstractCegarLoop]: === Iteration 13 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:31,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1412559370, now seen corresponding path program 1 times [2018-07-23 15:15:31,130 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-23 15:15:31,148 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:31,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:15:31,149 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:15:31,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:15:31,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:15:31,150 INFO L87 Difference]: Start difference. First operand 287 states and 429 transitions. Second operand 4 states. [2018-07-23 15:15:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:31,257 INFO L93 Difference]: Finished difference Result 428 states and 641 transitions. [2018-07-23 15:15:31,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:15:31,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-07-23 15:15:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:31,259 INFO L225 Difference]: With dead ends: 428 [2018-07-23 15:15:31,260 INFO L226 Difference]: Without dead ends: 273 [2018-07-23 15:15:31,266 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:15:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-23 15:15:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-23 15:15:31,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-23 15:15:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 399 transitions. [2018-07-23 15:15:31,360 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 399 transitions. Word has length 14 [2018-07-23 15:15:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:31,360 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 399 transitions. [2018-07-23 15:15:31,360 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:15:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 399 transitions. [2018-07-23 15:15:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:31,363 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:31,363 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:31,364 INFO L414 AbstractCegarLoop]: === Iteration 14 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:31,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1697430606, now seen corresponding path program 1 times [2018-07-23 15:15:31,364 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-23 15:15:31,384 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:15:31,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:15:31,385 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 15:15:31,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 15:15:31,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 15:15:31,393 INFO L87 Difference]: Start difference. First operand 273 states and 399 transitions. Second operand 4 states. [2018-07-23 15:15:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:31,471 INFO L93 Difference]: Finished difference Result 399 states and 584 transitions. [2018-07-23 15:15:31,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 15:15:31,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-07-23 15:15:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:31,478 INFO L225 Difference]: With dead ends: 399 [2018-07-23 15:15:31,478 INFO L226 Difference]: Without dead ends: 225 [2018-07-23 15:15:31,480 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 15:15:31,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-23 15:15:31,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-23 15:15:31,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-23 15:15:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 316 transitions. [2018-07-23 15:15:31,539 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 316 transitions. Word has length 14 [2018-07-23 15:15:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:31,539 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 316 transitions. [2018-07-23 15:15:31,540 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 15:15:31,540 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 316 transitions. [2018-07-23 15:15:31,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:31,540 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:31,541 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:31,541 INFO L414 AbstractCegarLoop]: === Iteration 15 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:31,541 INFO L82 PathProgramCache]: Analyzing trace with hash 844488035, now seen corresponding path program 1 times [2018-07-23 15:15:31,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:31,565 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 15:15:31,565 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:31,566 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 15:15:31,566 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 15:15:31,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 15:15:31,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:15:31,567 INFO L87 Difference]: Start difference. First operand 225 states and 316 transitions. Second operand 7 states. [2018-07-23 15:15:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:31,732 INFO L93 Difference]: Finished difference Result 297 states and 415 transitions. [2018-07-23 15:15:31,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:31,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-07-23 15:15:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:31,734 INFO L225 Difference]: With dead ends: 297 [2018-07-23 15:15:31,735 INFO L226 Difference]: Without dead ends: 295 [2018-07-23 15:15:31,735 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:15:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-23 15:15:31,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 262. [2018-07-23 15:15:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-23 15:15:31,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 371 transitions. [2018-07-23 15:15:31,820 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 371 transitions. Word has length 14 [2018-07-23 15:15:31,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:31,821 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 371 transitions. [2018-07-23 15:15:31,821 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 15:15:31,821 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 371 transitions. [2018-07-23 15:15:31,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:31,822 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:31,822 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:31,822 INFO L414 AbstractCegarLoop]: === Iteration 16 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:31,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1052420626, now seen corresponding path program 1 times [2018-07-23 15:15:31,823 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:31,863 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 15:15:31,865 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:31,866 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:31,866 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:31,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:31,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:31,867 INFO L87 Difference]: Start difference. First operand 262 states and 371 transitions. Second operand 8 states. [2018-07-23 15:15:32,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:32,060 INFO L93 Difference]: Finished difference Result 326 states and 461 transitions. [2018-07-23 15:15:32,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:32,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-23 15:15:32,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:32,063 INFO L225 Difference]: With dead ends: 326 [2018-07-23 15:15:32,063 INFO L226 Difference]: Without dead ends: 324 [2018-07-23 15:15:32,064 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-23 15:15:32,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 301. [2018-07-23 15:15:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-23 15:15:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2018-07-23 15:15:32,157 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 14 [2018-07-23 15:15:32,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:32,157 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2018-07-23 15:15:32,157 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2018-07-23 15:15:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:32,158 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:32,158 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:32,159 INFO L414 AbstractCegarLoop]: === Iteration 17 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:32,159 INFO L82 PathProgramCache]: Analyzing trace with hash 697427610, now seen corresponding path program 1 times [2018-07-23 15:15:32,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:32,187 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 15:15:32,187 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:32,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:32,188 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:32,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:32,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:32,189 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand 8 states. [2018-07-23 15:15:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:32,367 INFO L93 Difference]: Finished difference Result 319 states and 447 transitions. [2018-07-23 15:15:32,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:32,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-23 15:15:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:32,370 INFO L225 Difference]: With dead ends: 319 [2018-07-23 15:15:32,370 INFO L226 Difference]: Without dead ends: 317 [2018-07-23 15:15:32,372 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-23 15:15:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303. [2018-07-23 15:15:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-23 15:15:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 431 transitions. [2018-07-23 15:15:32,464 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 431 transitions. Word has length 14 [2018-07-23 15:15:32,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:32,465 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 431 transitions. [2018-07-23 15:15:32,465 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 431 transitions. [2018-07-23 15:15:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-23 15:15:32,466 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:32,466 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:32,466 INFO L414 AbstractCegarLoop]: === Iteration 18 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:32,466 INFO L82 PathProgramCache]: Analyzing trace with hash 697427226, now seen corresponding path program 1 times [2018-07-23 15:15:32,467 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:32,501 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 15:15:32,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:32,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:32,502 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:32,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:32,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:32,503 INFO L87 Difference]: Start difference. First operand 303 states and 431 transitions. Second operand 8 states. [2018-07-23 15:15:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:32,731 INFO L93 Difference]: Finished difference Result 335 states and 474 transitions. [2018-07-23 15:15:32,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:32,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-23 15:15:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:32,734 INFO L225 Difference]: With dead ends: 335 [2018-07-23 15:15:32,734 INFO L226 Difference]: Without dead ends: 333 [2018-07-23 15:15:32,735 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-23 15:15:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 322. [2018-07-23 15:15:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-23 15:15:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 456 transitions. [2018-07-23 15:15:32,843 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 456 transitions. Word has length 14 [2018-07-23 15:15:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:32,843 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 456 transitions. [2018-07-23 15:15:32,843 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 456 transitions. [2018-07-23 15:15:32,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-23 15:15:32,844 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:32,845 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:32,845 INFO L414 AbstractCegarLoop]: === Iteration 19 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:32,845 INFO L82 PathProgramCache]: Analyzing trace with hash 406900684, now seen corresponding path program 1 times [2018-07-23 15:15:32,845 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:32,878 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 15:15:32,879 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:32,879 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:15:32,879 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:15:32,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:15:32,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:15:32,880 INFO L87 Difference]: Start difference. First operand 322 states and 456 transitions. Second operand 10 states. [2018-07-23 15:15:33,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:33,272 INFO L93 Difference]: Finished difference Result 482 states and 683 transitions. [2018-07-23 15:15:33,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:15:33,272 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-23 15:15:33,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:33,276 INFO L225 Difference]: With dead ends: 482 [2018-07-23 15:15:33,276 INFO L226 Difference]: Without dead ends: 480 [2018-07-23 15:15:33,277 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=242, Invalid=570, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:15:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-07-23 15:15:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 331. [2018-07-23 15:15:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-23 15:15:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 470 transitions. [2018-07-23 15:15:33,407 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 470 transitions. Word has length 17 [2018-07-23 15:15:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:33,408 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 470 transitions. [2018-07-23 15:15:33,408 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:15:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 470 transitions. [2018-07-23 15:15:33,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-23 15:15:33,410 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:33,410 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:33,410 INFO L414 AbstractCegarLoop]: === Iteration 20 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:33,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2143481530, now seen corresponding path program 1 times [2018-07-23 15:15:33,411 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:33,441 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 15:15:33,441 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:33,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:15:33,442 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:15:33,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:15:33,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:15:33,443 INFO L87 Difference]: Start difference. First operand 331 states and 470 transitions. Second operand 10 states. [2018-07-23 15:15:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:33,959 INFO L93 Difference]: Finished difference Result 507 states and 718 transitions. [2018-07-23 15:15:33,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:15:33,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-23 15:15:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:33,964 INFO L225 Difference]: With dead ends: 507 [2018-07-23 15:15:33,964 INFO L226 Difference]: Without dead ends: 505 [2018-07-23 15:15:33,965 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=242, Invalid=570, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:15:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-07-23 15:15:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 286. [2018-07-23 15:15:34,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-23 15:15:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 400 transitions. [2018-07-23 15:15:34,133 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 400 transitions. Word has length 17 [2018-07-23 15:15:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:34,133 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 400 transitions. [2018-07-23 15:15:34,133 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:15:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 400 transitions. [2018-07-23 15:15:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:34,134 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:34,134 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:34,135 INFO L414 AbstractCegarLoop]: === Iteration 21 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:34,135 INFO L82 PathProgramCache]: Analyzing trace with hash -649882737, now seen corresponding path program 2 times [2018-07-23 15:15:34,135 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:34,157 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 15:15:34,157 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:34,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:34,158 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:34,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:34,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:34,158 INFO L87 Difference]: Start difference. First operand 286 states and 400 transitions. Second operand 8 states. [2018-07-23 15:15:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:34,516 INFO L93 Difference]: Finished difference Result 487 states and 698 transitions. [2018-07-23 15:15:34,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:15:34,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:34,519 INFO L225 Difference]: With dead ends: 487 [2018-07-23 15:15:34,520 INFO L226 Difference]: Without dead ends: 485 [2018-07-23 15:15:34,520 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:15:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2018-07-23 15:15:34,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 437. [2018-07-23 15:15:34,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-23 15:15:34,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 636 transitions. [2018-07-23 15:15:34,733 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 636 transitions. Word has length 18 [2018-07-23 15:15:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:34,734 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 636 transitions. [2018-07-23 15:15:34,734 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:34,734 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 636 transitions. [2018-07-23 15:15:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:34,735 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:34,735 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:34,735 INFO L414 AbstractCegarLoop]: === Iteration 22 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:34,735 INFO L82 PathProgramCache]: Analyzing trace with hash -653820908, now seen corresponding path program 1 times [2018-07-23 15:15:34,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:34,773 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 15:15:34,775 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:34,775 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:34,776 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:34,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:34,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:34,776 INFO L87 Difference]: Start difference. First operand 437 states and 636 transitions. Second operand 8 states. [2018-07-23 15:15:35,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:35,181 INFO L93 Difference]: Finished difference Result 500 states and 719 transitions. [2018-07-23 15:15:35,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:15:35,181 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:35,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:35,189 INFO L225 Difference]: With dead ends: 500 [2018-07-23 15:15:35,190 INFO L226 Difference]: Without dead ends: 498 [2018-07-23 15:15:35,191 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:35,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2018-07-23 15:15:35,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 421. [2018-07-23 15:15:35,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-23 15:15:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 615 transitions. [2018-07-23 15:15:35,423 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 615 transitions. Word has length 18 [2018-07-23 15:15:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:35,423 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 615 transitions. [2018-07-23 15:15:35,423 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:35,423 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 615 transitions. [2018-07-23 15:15:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:35,424 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:35,425 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:35,425 INFO L414 AbstractCegarLoop]: === Iteration 23 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:35,425 INFO L82 PathProgramCache]: Analyzing trace with hash -653821292, now seen corresponding path program 1 times [2018-07-23 15:15:35,425 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:35,446 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 15:15:35,447 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:35,447 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:35,447 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:35,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:35,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:35,448 INFO L87 Difference]: Start difference. First operand 421 states and 615 transitions. Second operand 8 states. [2018-07-23 15:15:35,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:35,827 INFO L93 Difference]: Finished difference Result 535 states and 771 transitions. [2018-07-23 15:15:35,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:35,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:35,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:35,830 INFO L225 Difference]: With dead ends: 535 [2018-07-23 15:15:35,831 INFO L226 Difference]: Without dead ends: 533 [2018-07-23 15:15:35,831 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2018-07-23 15:15:36,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 447. [2018-07-23 15:15:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-07-23 15:15:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 651 transitions. [2018-07-23 15:15:36,064 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 651 transitions. Word has length 18 [2018-07-23 15:15:36,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:36,064 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 651 transitions. [2018-07-23 15:15:36,064 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 651 transitions. [2018-07-23 15:15:36,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:36,066 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:36,066 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:36,066 INFO L414 AbstractCegarLoop]: === Iteration 24 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:36,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1008814308, now seen corresponding path program 1 times [2018-07-23 15:15:36,067 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:36,088 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 15:15:36,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:36,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:36,089 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:36,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:36,089 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:36,089 INFO L87 Difference]: Start difference. First operand 447 states and 651 transitions. Second operand 8 states. [2018-07-23 15:15:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:36,531 INFO L93 Difference]: Finished difference Result 557 states and 803 transitions. [2018-07-23 15:15:36,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:36,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:36,536 INFO L225 Difference]: With dead ends: 557 [2018-07-23 15:15:36,536 INFO L226 Difference]: Without dead ends: 555 [2018-07-23 15:15:36,537 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2018-07-23 15:15:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 462. [2018-07-23 15:15:36,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2018-07-23 15:15:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 674 transitions. [2018-07-23 15:15:36,857 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 674 transitions. Word has length 18 [2018-07-23 15:15:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:36,857 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 674 transitions. [2018-07-23 15:15:36,857 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:36,857 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 674 transitions. [2018-07-23 15:15:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:36,859 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:36,859 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:36,859 INFO L414 AbstractCegarLoop]: === Iteration 25 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:36,859 INFO L82 PathProgramCache]: Analyzing trace with hash 199858329, now seen corresponding path program 2 times [2018-07-23 15:15:36,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:36,886 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 15:15:36,886 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:36,886 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:36,887 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:36,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:36,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:36,888 INFO L87 Difference]: Start difference. First operand 462 states and 674 transitions. Second operand 9 states. [2018-07-23 15:15:37,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:37,402 INFO L93 Difference]: Finished difference Result 562 states and 811 transitions. [2018-07-23 15:15:37,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:15:37,403 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-23 15:15:37,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:37,406 INFO L225 Difference]: With dead ends: 562 [2018-07-23 15:15:37,406 INFO L226 Difference]: Without dead ends: 560 [2018-07-23 15:15:37,407 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:15:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2018-07-23 15:15:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 495. [2018-07-23 15:15:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-07-23 15:15:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 721 transitions. [2018-07-23 15:15:37,717 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 721 transitions. Word has length 18 [2018-07-23 15:15:37,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:37,718 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 721 transitions. [2018-07-23 15:15:37,718 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:37,718 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 721 transitions. [2018-07-23 15:15:37,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:37,720 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:37,720 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:37,720 INFO L414 AbstractCegarLoop]: === Iteration 26 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:37,720 INFO L82 PathProgramCache]: Analyzing trace with hash -155134687, now seen corresponding path program 1 times [2018-07-23 15:15:37,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:37,742 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 15:15:37,743 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:37,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:37,744 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:37,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:37,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:37,744 INFO L87 Difference]: Start difference. First operand 495 states and 721 transitions. Second operand 8 states. [2018-07-23 15:15:38,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:38,166 INFO L93 Difference]: Finished difference Result 542 states and 779 transitions. [2018-07-23 15:15:38,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:38,166 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:38,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:38,170 INFO L225 Difference]: With dead ends: 542 [2018-07-23 15:15:38,170 INFO L226 Difference]: Without dead ends: 540 [2018-07-23 15:15:38,171 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:38,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2018-07-23 15:15:38,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 508. [2018-07-23 15:15:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-07-23 15:15:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 738 transitions. [2018-07-23 15:15:38,470 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 738 transitions. Word has length 18 [2018-07-23 15:15:38,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:38,470 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 738 transitions. [2018-07-23 15:15:38,470 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 738 transitions. [2018-07-23 15:15:38,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:38,471 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:38,472 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:38,472 INFO L414 AbstractCegarLoop]: === Iteration 27 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:38,472 INFO L82 PathProgramCache]: Analyzing trace with hash -155135071, now seen corresponding path program 1 times [2018-07-23 15:15:38,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:38,493 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 15:15:38,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:38,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:38,493 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:38,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:38,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:38,494 INFO L87 Difference]: Start difference. First operand 508 states and 738 transitions. Second operand 8 states. [2018-07-23 15:15:39,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:39,128 INFO L93 Difference]: Finished difference Result 840 states and 1224 transitions. [2018-07-23 15:15:39,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:39,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:39,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:39,134 INFO L225 Difference]: With dead ends: 840 [2018-07-23 15:15:39,134 INFO L226 Difference]: Without dead ends: 838 [2018-07-23 15:15:39,135 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2018-07-23 15:15:39,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 672. [2018-07-23 15:15:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2018-07-23 15:15:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 988 transitions. [2018-07-23 15:15:39,452 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 988 transitions. Word has length 18 [2018-07-23 15:15:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:39,452 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 988 transitions. [2018-07-23 15:15:39,452 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 988 transitions. [2018-07-23 15:15:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:39,454 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:39,454 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:39,454 INFO L414 AbstractCegarLoop]: === Iteration 28 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:39,454 INFO L82 PathProgramCache]: Analyzing trace with hash -216264415, now seen corresponding path program 2 times [2018-07-23 15:15:39,454 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:39,476 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 15:15:39,477 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:39,477 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:39,477 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:39,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:39,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:39,478 INFO L87 Difference]: Start difference. First operand 672 states and 988 transitions. Second operand 8 states. [2018-07-23 15:15:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:39,982 INFO L93 Difference]: Finished difference Result 733 states and 1065 transitions. [2018-07-23 15:15:39,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:39,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:39,987 INFO L225 Difference]: With dead ends: 733 [2018-07-23 15:15:39,987 INFO L226 Difference]: Without dead ends: 731 [2018-07-23 15:15:39,988 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2018-07-23 15:15:40,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 646. [2018-07-23 15:15:40,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2018-07-23 15:15:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 944 transitions. [2018-07-23 15:15:40,330 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 944 transitions. Word has length 18 [2018-07-23 15:15:40,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:40,331 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 944 transitions. [2018-07-23 15:15:40,331 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 944 transitions. [2018-07-23 15:15:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:40,332 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:40,332 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:40,333 INFO L414 AbstractCegarLoop]: === Iteration 29 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:40,333 INFO L82 PathProgramCache]: Analyzing trace with hash -216264799, now seen corresponding path program 2 times [2018-07-23 15:15:40,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:40,354 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 15:15:40,354 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:40,354 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:40,355 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:40,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:40,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:40,356 INFO L87 Difference]: Start difference. First operand 646 states and 944 transitions. Second operand 8 states. [2018-07-23 15:15:40,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:40,950 INFO L93 Difference]: Finished difference Result 780 states and 1131 transitions. [2018-07-23 15:15:40,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:40,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:40,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:40,955 INFO L225 Difference]: With dead ends: 780 [2018-07-23 15:15:40,955 INFO L226 Difference]: Without dead ends: 778 [2018-07-23 15:15:40,956 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:40,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2018-07-23 15:15:41,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 630. [2018-07-23 15:15:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2018-07-23 15:15:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 921 transitions. [2018-07-23 15:15:41,333 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 921 transitions. Word has length 18 [2018-07-23 15:15:41,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:41,334 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 921 transitions. [2018-07-23 15:15:41,334 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:41,334 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 921 transitions. [2018-07-23 15:15:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:41,335 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:41,335 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:41,335 INFO L414 AbstractCegarLoop]: === Iteration 30 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:41,336 INFO L82 PathProgramCache]: Analyzing trace with hash -571257815, now seen corresponding path program 2 times [2018-07-23 15:15:41,336 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:41,371 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 15:15:41,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:41,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:15:41,375 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:41,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:41,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:41,376 INFO L87 Difference]: Start difference. First operand 630 states and 921 transitions. Second operand 9 states. [2018-07-23 15:15:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:41,990 INFO L93 Difference]: Finished difference Result 745 states and 1087 transitions. [2018-07-23 15:15:41,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:41,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-23 15:15:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:41,995 INFO L225 Difference]: With dead ends: 745 [2018-07-23 15:15:41,995 INFO L226 Difference]: Without dead ends: 744 [2018-07-23 15:15:41,996 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-23 15:15:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 624. [2018-07-23 15:15:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2018-07-23 15:15:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 910 transitions. [2018-07-23 15:15:42,270 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 910 transitions. Word has length 18 [2018-07-23 15:15:42,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:42,271 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 910 transitions. [2018-07-23 15:15:42,271 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 910 transitions. [2018-07-23 15:15:42,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:42,272 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:42,272 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:42,272 INFO L414 AbstractCegarLoop]: === Iteration 31 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:42,272 INFO L82 PathProgramCache]: Analyzing trace with hash -571168152, now seen corresponding path program 1 times [2018-07-23 15:15:42,273 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:42,291 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 15:15:42,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:42,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:42,292 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:42,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:42,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:42,292 INFO L87 Difference]: Start difference. First operand 624 states and 910 transitions. Second operand 8 states. [2018-07-23 15:15:42,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:42,846 INFO L93 Difference]: Finished difference Result 767 states and 1100 transitions. [2018-07-23 15:15:42,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:42,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:42,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:42,851 INFO L225 Difference]: With dead ends: 767 [2018-07-23 15:15:42,851 INFO L226 Difference]: Without dead ends: 765 [2018-07-23 15:15:42,852 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2018-07-23 15:15:43,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 650. [2018-07-23 15:15:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2018-07-23 15:15:43,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 947 transitions. [2018-07-23 15:15:43,239 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 947 transitions. Word has length 18 [2018-07-23 15:15:43,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:43,240 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 947 transitions. [2018-07-23 15:15:43,240 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 947 transitions. [2018-07-23 15:15:43,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:43,241 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:43,241 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:43,241 INFO L414 AbstractCegarLoop]: === Iteration 32 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:43,241 INFO L82 PathProgramCache]: Analyzing trace with hash 948617211, now seen corresponding path program 2 times [2018-07-23 15:15:43,242 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:43,257 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 15:15:43,258 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:43,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:43,258 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:43,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:43,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:43,259 INFO L87 Difference]: Start difference. First operand 650 states and 947 transitions. Second operand 8 states. [2018-07-23 15:15:43,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:43,758 INFO L93 Difference]: Finished difference Result 705 states and 1013 transitions. [2018-07-23 15:15:43,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:15:43,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:43,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:43,762 INFO L225 Difference]: With dead ends: 705 [2018-07-23 15:15:43,763 INFO L226 Difference]: Without dead ends: 703 [2018-07-23 15:15:43,764 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2018-07-23 15:15:43,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2018-07-23 15:15:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 672. [2018-07-23 15:15:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2018-07-23 15:15:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 976 transitions. [2018-07-23 15:15:44,075 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 976 transitions. Word has length 18 [2018-07-23 15:15:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:44,076 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 976 transitions. [2018-07-23 15:15:44,076 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 976 transitions. [2018-07-23 15:15:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:44,077 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:44,077 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:44,077 INFO L414 AbstractCegarLoop]: === Iteration 33 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:44,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1156549802, now seen corresponding path program 1 times [2018-07-23 15:15:44,078 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:44,093 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 15:15:44,093 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:44,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:44,094 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:44,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:44,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:44,094 INFO L87 Difference]: Start difference. First operand 672 states and 976 transitions. Second operand 8 states. [2018-07-23 15:15:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:44,633 INFO L93 Difference]: Finished difference Result 766 states and 1106 transitions. [2018-07-23 15:15:44,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:44,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:44,637 INFO L225 Difference]: With dead ends: 766 [2018-07-23 15:15:44,637 INFO L226 Difference]: Without dead ends: 764 [2018-07-23 15:15:44,638 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2018-07-23 15:15:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 686. [2018-07-23 15:15:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-07-23 15:15:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 997 transitions. [2018-07-23 15:15:45,103 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 997 transitions. Word has length 18 [2018-07-23 15:15:45,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:45,103 INFO L471 AbstractCegarLoop]: Abstraction has 686 states and 997 transitions. [2018-07-23 15:15:45,104 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 997 transitions. [2018-07-23 15:15:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:45,105 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:45,105 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:45,105 INFO L414 AbstractCegarLoop]: === Iteration 34 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:45,108 INFO L82 PathProgramCache]: Analyzing trace with hash 801556786, now seen corresponding path program 1 times [2018-07-23 15:15:45,108 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:45,123 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 15:15:45,124 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:45,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:45,124 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:45,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:45,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:45,125 INFO L87 Difference]: Start difference. First operand 686 states and 997 transitions. Second operand 8 states. [2018-07-23 15:15:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:45,700 INFO L93 Difference]: Finished difference Result 781 states and 1129 transitions. [2018-07-23 15:15:45,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:45,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:45,705 INFO L225 Difference]: With dead ends: 781 [2018-07-23 15:15:45,705 INFO L226 Difference]: Without dead ends: 779 [2018-07-23 15:15:45,706 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2018-07-23 15:15:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 707. [2018-07-23 15:15:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2018-07-23 15:15:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1026 transitions. [2018-07-23 15:15:46,074 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1026 transitions. Word has length 18 [2018-07-23 15:15:46,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:46,074 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 1026 transitions. [2018-07-23 15:15:46,074 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:46,074 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1026 transitions. [2018-07-23 15:15:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:46,075 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:46,076 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:46,076 INFO L414 AbstractCegarLoop]: === Iteration 35 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:46,076 INFO L82 PathProgramCache]: Analyzing trace with hash 801556402, now seen corresponding path program 1 times [2018-07-23 15:15:46,076 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:46,094 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 15:15:46,094 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:46,095 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:46,095 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:46,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:46,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:46,096 INFO L87 Difference]: Start difference. First operand 707 states and 1026 transitions. Second operand 8 states. [2018-07-23 15:15:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:46,639 INFO L93 Difference]: Finished difference Result 774 states and 1115 transitions. [2018-07-23 15:15:46,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:15:46,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:46,644 INFO L225 Difference]: With dead ends: 774 [2018-07-23 15:15:46,644 INFO L226 Difference]: Without dead ends: 772 [2018-07-23 15:15:46,645 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2018-07-23 15:15:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 683. [2018-07-23 15:15:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-07-23 15:15:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 993 transitions. [2018-07-23 15:15:47,142 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 993 transitions. Word has length 18 [2018-07-23 15:15:47,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:47,142 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 993 transitions. [2018-07-23 15:15:47,142 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:47,142 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 993 transitions. [2018-07-23 15:15:47,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:47,144 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:47,144 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:47,144 INFO L414 AbstractCegarLoop]: === Iteration 36 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:47,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1011848743, now seen corresponding path program 2 times [2018-07-23 15:15:47,144 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:47,174 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 15:15:47,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:47,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:15:47,175 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:47,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:47,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:47,179 INFO L87 Difference]: Start difference. First operand 683 states and 993 transitions. Second operand 9 states. [2018-07-23 15:15:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:47,947 INFO L93 Difference]: Finished difference Result 907 states and 1338 transitions. [2018-07-23 15:15:47,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 15:15:47,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-23 15:15:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:47,952 INFO L225 Difference]: With dead ends: 907 [2018-07-23 15:15:47,952 INFO L226 Difference]: Without dead ends: 906 [2018-07-23 15:15:47,953 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2018-07-23 15:15:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2018-07-23 15:15:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 746. [2018-07-23 15:15:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2018-07-23 15:15:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1095 transitions. [2018-07-23 15:15:48,368 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1095 transitions. Word has length 18 [2018-07-23 15:15:48,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:48,369 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 1095 transitions. [2018-07-23 15:15:48,369 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1095 transitions. [2018-07-23 15:15:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:48,370 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:48,370 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:48,371 INFO L414 AbstractCegarLoop]: === Iteration 37 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:48,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1011759784, now seen corresponding path program 1 times [2018-07-23 15:15:48,371 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:48,392 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 15:15:48,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:48,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:48,393 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:48,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:48,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:48,394 INFO L87 Difference]: Start difference. First operand 746 states and 1095 transitions. Second operand 8 states. [2018-07-23 15:15:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:49,091 INFO L93 Difference]: Finished difference Result 914 states and 1326 transitions. [2018-07-23 15:15:49,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:15:49,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:49,096 INFO L225 Difference]: With dead ends: 914 [2018-07-23 15:15:49,096 INFO L226 Difference]: Without dead ends: 912 [2018-07-23 15:15:49,097 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:49,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2018-07-23 15:15:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 761. [2018-07-23 15:15:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2018-07-23 15:15:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1117 transitions. [2018-07-23 15:15:49,449 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1117 transitions. Word has length 18 [2018-07-23 15:15:49,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:49,450 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1117 transitions. [2018-07-23 15:15:49,450 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:49,450 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1117 transitions. [2018-07-23 15:15:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:49,451 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:49,451 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:49,451 INFO L414 AbstractCegarLoop]: === Iteration 38 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:49,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1366841759, now seen corresponding path program 1 times [2018-07-23 15:15:49,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:49,467 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 15:15:49,468 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:49,468 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:49,468 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:49,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:49,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:49,469 INFO L87 Difference]: Start difference. First operand 761 states and 1117 transitions. Second operand 8 states. [2018-07-23 15:15:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:50,145 INFO L93 Difference]: Finished difference Result 933 states and 1368 transitions. [2018-07-23 15:15:50,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:50,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:50,150 INFO L225 Difference]: With dead ends: 933 [2018-07-23 15:15:50,150 INFO L226 Difference]: Without dead ends: 931 [2018-07-23 15:15:50,151 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2018-07-23 15:15:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 781. [2018-07-23 15:15:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2018-07-23 15:15:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1145 transitions. [2018-07-23 15:15:50,496 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1145 transitions. Word has length 18 [2018-07-23 15:15:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:50,497 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 1145 transitions. [2018-07-23 15:15:50,497 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1145 transitions. [2018-07-23 15:15:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:50,498 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:50,498 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:50,498 INFO L414 AbstractCegarLoop]: === Iteration 39 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:50,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1366842143, now seen corresponding path program 1 times [2018-07-23 15:15:50,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:50,514 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 15:15:50,514 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:50,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 15:15:50,515 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:50,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:50,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:50,515 INFO L87 Difference]: Start difference. First operand 781 states and 1145 transitions. Second operand 8 states. [2018-07-23 15:15:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:51,019 INFO L93 Difference]: Finished difference Result 821 states and 1189 transitions. [2018-07-23 15:15:51,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:51,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:51,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:51,025 INFO L225 Difference]: With dead ends: 821 [2018-07-23 15:15:51,025 INFO L226 Difference]: Without dead ends: 819 [2018-07-23 15:15:51,026 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:15:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-07-23 15:15:51,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 741. [2018-07-23 15:15:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2018-07-23 15:15:51,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1081 transitions. [2018-07-23 15:15:51,340 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1081 transitions. Word has length 18 [2018-07-23 15:15:51,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:51,340 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1081 transitions. [2018-07-23 15:15:51,340 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:51,341 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1081 transitions. [2018-07-23 15:15:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:51,342 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:51,342 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:51,342 INFO L414 AbstractCegarLoop]: === Iteration 40 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:51,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1427971487, now seen corresponding path program 2 times [2018-07-23 15:15:51,342 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:51,359 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 15:15:51,359 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:51,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:51,360 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:15:51,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:15:51,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:15:51,360 INFO L87 Difference]: Start difference. First operand 741 states and 1081 transitions. Second operand 8 states. [2018-07-23 15:15:52,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:52,043 INFO L93 Difference]: Finished difference Result 941 states and 1359 transitions. [2018-07-23 15:15:52,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:15:52,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-23 15:15:52,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:52,048 INFO L225 Difference]: With dead ends: 941 [2018-07-23 15:15:52,048 INFO L226 Difference]: Without dead ends: 939 [2018-07-23 15:15:52,049 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:15:52,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-07-23 15:15:52,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 792. [2018-07-23 15:15:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2018-07-23 15:15:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1155 transitions. [2018-07-23 15:15:52,396 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1155 transitions. Word has length 18 [2018-07-23 15:15:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:52,397 INFO L471 AbstractCegarLoop]: Abstraction has 792 states and 1155 transitions. [2018-07-23 15:15:52,397 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:15:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1155 transitions. [2018-07-23 15:15:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 15:15:52,398 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:52,398 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:52,398 INFO L414 AbstractCegarLoop]: === Iteration 41 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:52,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1782964887, now seen corresponding path program 2 times [2018-07-23 15:15:52,399 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:52,414 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 15:15:52,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:52,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:15:52,415 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:52,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:52,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:52,416 INFO L87 Difference]: Start difference. First operand 792 states and 1155 transitions. Second operand 9 states. [2018-07-23 15:15:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:52,966 INFO L93 Difference]: Finished difference Result 936 states and 1355 transitions. [2018-07-23 15:15:52,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:15:52,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-23 15:15:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:52,970 INFO L225 Difference]: With dead ends: 936 [2018-07-23 15:15:52,971 INFO L226 Difference]: Without dead ends: 934 [2018-07-23 15:15:52,971 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:15:52,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2018-07-23 15:15:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 827. [2018-07-23 15:15:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2018-07-23 15:15:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1202 transitions. [2018-07-23 15:15:53,318 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1202 transitions. Word has length 18 [2018-07-23 15:15:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:53,318 INFO L471 AbstractCegarLoop]: Abstraction has 827 states and 1202 transitions. [2018-07-23 15:15:53,319 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1202 transitions. [2018-07-23 15:15:53,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 15:15:53,320 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:53,320 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:53,320 INFO L414 AbstractCegarLoop]: === Iteration 42 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1622613706, now seen corresponding path program 1 times [2018-07-23 15:15:53,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:53,353 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:53,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:15:53,354 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:15:53,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:15:53,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:15:53,356 INFO L87 Difference]: Start difference. First operand 827 states and 1202 transitions. Second operand 12 states. [2018-07-23 15:15:54,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:54,529 INFO L93 Difference]: Finished difference Result 1574 states and 2302 transitions. [2018-07-23 15:15:54,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:15:54,530 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-23 15:15:54,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:54,536 INFO L225 Difference]: With dead ends: 1574 [2018-07-23 15:15:54,537 INFO L226 Difference]: Without dead ends: 1572 [2018-07-23 15:15:54,538 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=390, Invalid=1092, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:15:54,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2018-07-23 15:15:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1454. [2018-07-23 15:15:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2018-07-23 15:15:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2142 transitions. [2018-07-23 15:15:55,095 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2142 transitions. Word has length 21 [2018-07-23 15:15:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:55,096 INFO L471 AbstractCegarLoop]: Abstraction has 1454 states and 2142 transitions. [2018-07-23 15:15:55,096 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:15:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2142 transitions. [2018-07-23 15:15:55,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 15:15:55,097 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:55,097 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:55,098 INFO L414 AbstractCegarLoop]: === Iteration 43 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:55,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1005591262, now seen corresponding path program 1 times [2018-07-23 15:15:55,098 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:15:55,117 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:55,117 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:15:55,117 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:15:55,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:15:55,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:15:55,118 INFO L87 Difference]: Start difference. First operand 1454 states and 2142 transitions. Second operand 12 states. [2018-07-23 15:15:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:56,436 INFO L93 Difference]: Finished difference Result 2649 states and 3932 transitions. [2018-07-23 15:15:56,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:15:56,436 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-23 15:15:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:56,448 INFO L225 Difference]: With dead ends: 2649 [2018-07-23 15:15:56,449 INFO L226 Difference]: Without dead ends: 2647 [2018-07-23 15:15:56,450 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=390, Invalid=1092, Unknown=0, NotChecked=0, Total=1482 [2018-07-23 15:15:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2018-07-23 15:15:57,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2484. [2018-07-23 15:15:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2484 states. [2018-07-23 15:15:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3704 transitions. [2018-07-23 15:15:57,316 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3704 transitions. Word has length 21 [2018-07-23 15:15:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:57,316 INFO L471 AbstractCegarLoop]: Abstraction has 2484 states and 3704 transitions. [2018-07-23 15:15:57,316 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:15:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3704 transitions. [2018-07-23 15:15:57,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:15:57,318 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:57,318 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:57,319 INFO L414 AbstractCegarLoop]: === Iteration 44 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:57,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1621422890, now seen corresponding path program 2 times [2018-07-23 15:15:57,319 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:15:57,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:57,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:15:57,337 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:57,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:57,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:57,338 INFO L87 Difference]: Start difference. First operand 2484 states and 3704 transitions. Second operand 9 states. [2018-07-23 15:15:58,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:15:58,285 INFO L93 Difference]: Finished difference Result 2521 states and 3747 transitions. [2018-07-23 15:15:58,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:15:58,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-23 15:15:58,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:15:58,296 INFO L225 Difference]: With dead ends: 2521 [2018-07-23 15:15:58,296 INFO L226 Difference]: Without dead ends: 2520 [2018-07-23 15:15:58,298 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:15:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2018-07-23 15:15:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2484. [2018-07-23 15:15:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2484 states. [2018-07-23 15:15:59,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3700 transitions. [2018-07-23 15:15:59,104 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3700 transitions. Word has length 22 [2018-07-23 15:15:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:15:59,105 INFO L471 AbstractCegarLoop]: Abstraction has 2484 states and 3700 transitions. [2018-07-23 15:15:59,105 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:15:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3700 transitions. [2018-07-23 15:15:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:15:59,106 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:15:59,106 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:15:59,106 INFO L414 AbstractCegarLoop]: === Iteration 45 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:15:59,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1982566808, now seen corresponding path program 1 times [2018-07-23 15:15:59,107 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:15:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:15:59,124 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 15:15:59,124 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:15:59,124 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:15:59,125 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:15:59,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:15:59,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:15:59,125 INFO L87 Difference]: Start difference. First operand 2484 states and 3700 transitions. Second operand 9 states. [2018-07-23 15:16:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:00,225 INFO L93 Difference]: Finished difference Result 2741 states and 4062 transitions. [2018-07-23 15:16:00,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:16:00,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-23 15:16:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:00,233 INFO L225 Difference]: With dead ends: 2741 [2018-07-23 15:16:00,234 INFO L226 Difference]: Without dead ends: 2739 [2018-07-23 15:16:00,235 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:16:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2018-07-23 15:16:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2594. [2018-07-23 15:16:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2018-07-23 15:16:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3858 transitions. [2018-07-23 15:16:01,118 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3858 transitions. Word has length 22 [2018-07-23 15:16:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:01,118 INFO L471 AbstractCegarLoop]: Abstraction has 2594 states and 3858 transitions. [2018-07-23 15:16:01,118 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:01,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3858 transitions. [2018-07-23 15:16:01,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:01,120 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:01,121 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:01,121 INFO L414 AbstractCegarLoop]: === Iteration 46 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:01,121 INFO L82 PathProgramCache]: Analyzing trace with hash -767743653, now seen corresponding path program 2 times [2018-07-23 15:16:01,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:01,138 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 15:16:01,138 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:01,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:01,139 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:16:01,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:16:01,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:16:01,139 INFO L87 Difference]: Start difference. First operand 2594 states and 3858 transitions. Second operand 10 states. [2018-07-23 15:16:02,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:02,512 INFO L93 Difference]: Finished difference Result 3321 states and 4947 transitions. [2018-07-23 15:16:02,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:16:02,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-23 15:16:02,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:02,521 INFO L225 Difference]: With dead ends: 3321 [2018-07-23 15:16:02,521 INFO L226 Difference]: Without dead ends: 3319 [2018-07-23 15:16:02,524 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:16:02,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2018-07-23 15:16:03,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2735. [2018-07-23 15:16:03,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2735 states. [2018-07-23 15:16:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4072 transitions. [2018-07-23 15:16:03,547 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4072 transitions. Word has length 22 [2018-07-23 15:16:03,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:03,547 INFO L471 AbstractCegarLoop]: Abstraction has 2735 states and 4072 transitions. [2018-07-23 15:16:03,547 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:16:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4072 transitions. [2018-07-23 15:16:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:03,549 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:03,549 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] [2018-07-23 15:16:03,549 INFO L414 AbstractCegarLoop]: === Iteration 47 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:03,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1122647006, now seen corresponding path program 1 times [2018-07-23 15:16:03,550 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:03,563 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 15:16:03,564 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:03,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:16:03,564 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:03,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:03,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:03,565 INFO L87 Difference]: Start difference. First operand 2735 states and 4072 transitions. Second operand 8 states. [2018-07-23 15:16:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:04,579 INFO L93 Difference]: Finished difference Result 2960 states and 4385 transitions. [2018-07-23 15:16:04,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:16:04,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-07-23 15:16:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:04,587 INFO L225 Difference]: With dead ends: 2960 [2018-07-23 15:16:04,587 INFO L226 Difference]: Without dead ends: 2958 [2018-07-23 15:16:04,589 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:16:04,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2018-07-23 15:16:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2737. [2018-07-23 15:16:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2737 states. [2018-07-23 15:16:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 4072 transitions. [2018-07-23 15:16:05,584 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 4072 transitions. Word has length 22 [2018-07-23 15:16:05,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:05,584 INFO L471 AbstractCegarLoop]: Abstraction has 2737 states and 4072 transitions. [2018-07-23 15:16:05,584 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 4072 transitions. [2018-07-23 15:16:05,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:05,586 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:05,587 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:05,587 INFO L414 AbstractCegarLoop]: === Iteration 48 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:05,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1183866397, now seen corresponding path program 1 times [2018-07-23 15:16:05,587 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:16:05,606 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:05,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:05,607 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:05,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:05,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:05,607 INFO L87 Difference]: Start difference. First operand 2737 states and 4072 transitions. Second operand 9 states. [2018-07-23 15:16:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:06,883 INFO L93 Difference]: Finished difference Result 2904 states and 4306 transitions. [2018-07-23 15:16:06,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:16:06,883 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-23 15:16:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:06,892 INFO L225 Difference]: With dead ends: 2904 [2018-07-23 15:16:06,892 INFO L226 Difference]: Without dead ends: 2903 [2018-07-23 15:16:06,893 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:16:06,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2018-07-23 15:16:07,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2719. [2018-07-23 15:16:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2719 states. [2018-07-23 15:16:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 4036 transitions. [2018-07-23 15:16:07,974 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 4036 transitions. Word has length 22 [2018-07-23 15:16:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:07,974 INFO L471 AbstractCegarLoop]: Abstraction has 2719 states and 4036 transitions. [2018-07-23 15:16:07,974 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 4036 transitions. [2018-07-23 15:16:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:07,976 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:07,976 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:07,976 INFO L414 AbstractCegarLoop]: === Iteration 49 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:07,976 INFO L82 PathProgramCache]: Analyzing trace with hash 15880131, now seen corresponding path program 1 times [2018-07-23 15:16:07,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:07,993 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 15:16:07,993 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:07,993 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:16:07,993 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:07,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:07,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:07,994 INFO L87 Difference]: Start difference. First operand 2719 states and 4036 transitions. Second operand 8 states. [2018-07-23 15:16:09,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:09,109 INFO L93 Difference]: Finished difference Result 3086 states and 4558 transitions. [2018-07-23 15:16:09,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:16:09,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-07-23 15:16:09,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:09,117 INFO L225 Difference]: With dead ends: 3086 [2018-07-23 15:16:09,117 INFO L226 Difference]: Without dead ends: 3084 [2018-07-23 15:16:09,119 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:16:09,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2018-07-23 15:16:10,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2747. [2018-07-23 15:16:10,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2747 states. [2018-07-23 15:16:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 4080 transitions. [2018-07-23 15:16:10,412 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 4080 transitions. Word has length 22 [2018-07-23 15:16:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:10,413 INFO L471 AbstractCegarLoop]: Abstraction has 2747 states and 4080 transitions. [2018-07-23 15:16:10,413 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 4080 transitions. [2018-07-23 15:16:10,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:10,415 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:10,415 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:10,415 INFO L414 AbstractCegarLoop]: === Iteration 50 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:10,416 INFO L82 PathProgramCache]: Analyzing trace with hash 627807824, now seen corresponding path program 1 times [2018-07-23 15:16:10,416 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:10,437 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 15:16:10,437 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:10,437 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:16:10,437 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:16:10,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:16:10,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:16:10,438 INFO L87 Difference]: Start difference. First operand 2747 states and 4080 transitions. Second operand 10 states. [2018-07-23 15:16:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:11,774 INFO L93 Difference]: Finished difference Result 3253 states and 4807 transitions. [2018-07-23 15:16:11,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:16:11,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-23 15:16:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:11,780 INFO L225 Difference]: With dead ends: 3253 [2018-07-23 15:16:11,780 INFO L226 Difference]: Without dead ends: 3251 [2018-07-23 15:16:11,781 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:16:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2018-07-23 15:16:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2802. [2018-07-23 15:16:12,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2802 states. [2018-07-23 15:16:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4162 transitions. [2018-07-23 15:16:12,856 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4162 transitions. Word has length 22 [2018-07-23 15:16:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:12,856 INFO L471 AbstractCegarLoop]: Abstraction has 2802 states and 4162 transitions. [2018-07-23 15:16:12,856 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:16:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4162 transitions. [2018-07-23 15:16:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:12,859 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:12,859 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:12,859 INFO L414 AbstractCegarLoop]: === Iteration 51 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:12,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1964547658, now seen corresponding path program 2 times [2018-07-23 15:16:12,859 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:16:12,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:12,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:12,877 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:12,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:12,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:12,877 INFO L87 Difference]: Start difference. First operand 2802 states and 4162 transitions. Second operand 9 states. [2018-07-23 15:16:13,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:13,987 INFO L93 Difference]: Finished difference Result 2833 states and 4197 transitions. [2018-07-23 15:16:13,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:16:13,987 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-23 15:16:13,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:13,991 INFO L225 Difference]: With dead ends: 2833 [2018-07-23 15:16:13,992 INFO L226 Difference]: Without dead ends: 2832 [2018-07-23 15:16:13,993 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:16:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2018-07-23 15:16:14,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2802. [2018-07-23 15:16:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2802 states. [2018-07-23 15:16:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4158 transitions. [2018-07-23 15:16:14,954 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4158 transitions. Word has length 22 [2018-07-23 15:16:14,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:14,954 INFO L471 AbstractCegarLoop]: Abstraction has 2802 states and 4158 transitions. [2018-07-23 15:16:14,954 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4158 transitions. [2018-07-23 15:16:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:14,956 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:14,956 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:14,957 INFO L414 AbstractCegarLoop]: === Iteration 52 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:14,957 INFO L82 PathProgramCache]: Analyzing trace with hash -430310174, now seen corresponding path program 1 times [2018-07-23 15:16:14,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:14,974 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 15:16:14,974 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:14,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:14,974 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:14,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:14,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:14,975 INFO L87 Difference]: Start difference. First operand 2802 states and 4158 transitions. Second operand 9 states. [2018-07-23 15:16:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:16,203 INFO L93 Difference]: Finished difference Result 3077 states and 4552 transitions. [2018-07-23 15:16:16,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 15:16:16,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-23 15:16:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:16,207 INFO L225 Difference]: With dead ends: 3077 [2018-07-23 15:16:16,207 INFO L226 Difference]: Without dead ends: 3075 [2018-07-23 15:16:16,209 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:16:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2018-07-23 15:16:17,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2917. [2018-07-23 15:16:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2917 states. [2018-07-23 15:16:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4324 transitions. [2018-07-23 15:16:17,290 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4324 transitions. Word has length 22 [2018-07-23 15:16:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:17,290 INFO L471 AbstractCegarLoop]: Abstraction has 2917 states and 4324 transitions. [2018-07-23 15:16:17,290 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4324 transitions. [2018-07-23 15:16:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:17,291 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:17,291 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:17,292 INFO L414 AbstractCegarLoop]: === Iteration 53 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:17,292 INFO L82 PathProgramCache]: Analyzing trace with hash -203850887, now seen corresponding path program 1 times [2018-07-23 15:16:17,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:16:17,308 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:17,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:17,308 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:16:17,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:16:17,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:16:17,309 INFO L87 Difference]: Start difference. First operand 2917 states and 4324 transitions. Second operand 9 states. [2018-07-23 15:16:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:18,583 INFO L93 Difference]: Finished difference Result 3087 states and 4560 transitions. [2018-07-23 15:16:18,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 15:16:18,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-23 15:16:18,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:18,587 INFO L225 Difference]: With dead ends: 3087 [2018-07-23 15:16:18,587 INFO L226 Difference]: Without dead ends: 3086 [2018-07-23 15:16:18,588 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-07-23 15:16:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2018-07-23 15:16:19,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 2915. [2018-07-23 15:16:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2915 states. [2018-07-23 15:16:19,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 4314 transitions. [2018-07-23 15:16:19,605 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 4314 transitions. Word has length 22 [2018-07-23 15:16:19,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:19,606 INFO L471 AbstractCegarLoop]: Abstraction has 2915 states and 4314 transitions. [2018-07-23 15:16:19,606 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:16:19,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 4314 transitions. [2018-07-23 15:16:19,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:19,607 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:19,607 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:19,607 INFO L414 AbstractCegarLoop]: === Iteration 54 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:19,608 INFO L82 PathProgramCache]: Analyzing trace with hash 345073063, now seen corresponding path program 1 times [2018-07-23 15:16:19,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:19,622 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 15:16:19,623 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:19,623 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 15:16:19,623 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 15:16:19,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 15:16:19,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:16:19,624 INFO L87 Difference]: Start difference. First operand 2915 states and 4314 transitions. Second operand 8 states. [2018-07-23 15:16:21,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:21,012 INFO L93 Difference]: Finished difference Result 3266 states and 4816 transitions. [2018-07-23 15:16:21,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:16:21,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-07-23 15:16:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:21,016 INFO L225 Difference]: With dead ends: 3266 [2018-07-23 15:16:21,016 INFO L226 Difference]: Without dead ends: 3264 [2018-07-23 15:16:21,016 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-07-23 15:16:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2018-07-23 15:16:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 2934. [2018-07-23 15:16:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2018-07-23 15:16:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4340 transitions. [2018-07-23 15:16:22,068 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4340 transitions. Word has length 22 [2018-07-23 15:16:22,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:22,068 INFO L471 AbstractCegarLoop]: Abstraction has 2934 states and 4340 transitions. [2018-07-23 15:16:22,069 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-23 15:16:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4340 transitions. [2018-07-23 15:16:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:22,072 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:22,072 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:22,072 INFO L414 AbstractCegarLoop]: === Iteration 55 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:22,072 INFO L82 PathProgramCache]: Analyzing trace with hash -619973631, now seen corresponding path program 2 times [2018-07-23 15:16:22,072 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:22,087 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 15:16:22,088 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:22,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:22,088 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:16:22,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:16:22,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:16:22,089 INFO L87 Difference]: Start difference. First operand 2934 states and 4340 transitions. Second operand 10 states. [2018-07-23 15:16:23,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:23,685 INFO L93 Difference]: Finished difference Result 3688 states and 5467 transitions. [2018-07-23 15:16:23,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:16:23,685 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-23 15:16:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:23,690 INFO L225 Difference]: With dead ends: 3688 [2018-07-23 15:16:23,691 INFO L226 Difference]: Without dead ends: 3686 [2018-07-23 15:16:23,692 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:16:23,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2018-07-23 15:16:24,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3074. [2018-07-23 15:16:24,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3074 states. [2018-07-23 15:16:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 4552 transitions. [2018-07-23 15:16:24,772 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 4552 transitions. Word has length 22 [2018-07-23 15:16:24,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:24,773 INFO L471 AbstractCegarLoop]: Abstraction has 3074 states and 4552 transitions. [2018-07-23 15:16:24,773 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:16:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 4552 transitions. [2018-07-23 15:16:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-23 15:16:24,775 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:24,775 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:24,776 INFO L414 AbstractCegarLoop]: === Iteration 56 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:24,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1613894486, now seen corresponding path program 1 times [2018-07-23 15:16:24,776 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:24,805 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 15:16:24,805 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:24,805 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:16:24,806 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:16:24,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:16:24,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:16:24,806 INFO L87 Difference]: Start difference. First operand 3074 states and 4552 transitions. Second operand 10 states. [2018-07-23 15:16:26,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:26,393 INFO L93 Difference]: Finished difference Result 3608 states and 5324 transitions. [2018-07-23 15:16:26,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:16:26,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-23 15:16:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:26,398 INFO L225 Difference]: With dead ends: 3608 [2018-07-23 15:16:26,398 INFO L226 Difference]: Without dead ends: 3606 [2018-07-23 15:16:26,399 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:16:26,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2018-07-23 15:16:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 3133. [2018-07-23 15:16:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3133 states. [2018-07-23 15:16:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 4640 transitions. [2018-07-23 15:16:27,524 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 4640 transitions. Word has length 22 [2018-07-23 15:16:27,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:27,524 INFO L471 AbstractCegarLoop]: Abstraction has 3133 states and 4640 transitions. [2018-07-23 15:16:27,525 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:16:27,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 4640 transitions. [2018-07-23 15:16:27,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:27,527 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:27,527 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:27,527 INFO L414 AbstractCegarLoop]: === Iteration 57 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:27,527 INFO L82 PathProgramCache]: Analyzing trace with hash -682508600, now seen corresponding path program 2 times [2018-07-23 15:16:27,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-23 15:16:27,545 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:27,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:16:27,546 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:16:27,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:16:27,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:16:27,546 INFO L87 Difference]: Start difference. First operand 3133 states and 4640 transitions. Second operand 11 states. [2018-07-23 15:16:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:28,847 INFO L93 Difference]: Finished difference Result 3236 states and 4771 transitions. [2018-07-23 15:16:28,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:16:28,847 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:16:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:28,852 INFO L225 Difference]: With dead ends: 3236 [2018-07-23 15:16:28,852 INFO L226 Difference]: Without dead ends: 3235 [2018-07-23 15:16:28,854 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:16:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2018-07-23 15:16:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3144. [2018-07-23 15:16:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3144 states. [2018-07-23 15:16:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 4654 transitions. [2018-07-23 15:16:30,168 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 4654 transitions. Word has length 25 [2018-07-23 15:16:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:30,168 INFO L471 AbstractCegarLoop]: Abstraction has 3144 states and 4654 transitions. [2018-07-23 15:16:30,168 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:16:30,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 4654 transitions. [2018-07-23 15:16:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:30,171 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:30,171 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:30,171 INFO L414 AbstractCegarLoop]: === Iteration 58 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:30,171 INFO L82 PathProgramCache]: Analyzing trace with hash -548371823, now seen corresponding path program 1 times [2018-07-23 15:16:30,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:30,195 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:30,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:16:30,195 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:16:30,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:16:30,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:16:30,196 INFO L87 Difference]: Start difference. First operand 3144 states and 4654 transitions. Second operand 11 states. [2018-07-23 15:16:31,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:31,837 INFO L93 Difference]: Finished difference Result 3658 states and 5404 transitions. [2018-07-23 15:16:31,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:16:31,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:16:31,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:31,842 INFO L225 Difference]: With dead ends: 3658 [2018-07-23 15:16:31,842 INFO L226 Difference]: Without dead ends: 3656 [2018-07-23 15:16:31,844 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:16:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2018-07-23 15:16:33,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3270. [2018-07-23 15:16:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2018-07-23 15:16:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4837 transitions. [2018-07-23 15:16:33,075 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4837 transitions. Word has length 25 [2018-07-23 15:16:33,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:33,075 INFO L471 AbstractCegarLoop]: Abstraction has 3270 states and 4837 transitions. [2018-07-23 15:16:33,075 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:16:33,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4837 transitions. [2018-07-23 15:16:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:33,078 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:33,079 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:33,079 INFO L414 AbstractCegarLoop]: === Iteration 59 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:33,079 INFO L82 PathProgramCache]: Analyzing trace with hash -843643870, now seen corresponding path program 1 times [2018-07-23 15:16:33,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:16:33,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:33,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:16:33,104 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:16:33,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:16:33,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:16:33,105 INFO L87 Difference]: Start difference. First operand 3270 states and 4837 transitions. Second operand 10 states. [2018-07-23 15:16:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:34,791 INFO L93 Difference]: Finished difference Result 3411 states and 5033 transitions. [2018-07-23 15:16:34,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:16:34,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-23 15:16:34,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:34,795 INFO L225 Difference]: With dead ends: 3411 [2018-07-23 15:16:34,795 INFO L226 Difference]: Without dead ends: 3410 [2018-07-23 15:16:34,796 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:16:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2018-07-23 15:16:36,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3284. [2018-07-23 15:16:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3284 states. [2018-07-23 15:16:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 4859 transitions. [2018-07-23 15:16:36,086 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 4859 transitions. Word has length 25 [2018-07-23 15:16:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:36,087 INFO L471 AbstractCegarLoop]: Abstraction has 3284 states and 4859 transitions. [2018-07-23 15:16:36,087 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:16:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 4859 transitions. [2018-07-23 15:16:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:36,090 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:36,090 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, 1] [2018-07-23 15:16:36,090 INFO L414 AbstractCegarLoop]: === Iteration 60 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:36,090 INFO L82 PathProgramCache]: Analyzing trace with hash -843554207, now seen corresponding path program 1 times [2018-07-23 15:16:36,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:36,103 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 15:16:36,103 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:36,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:16:36,103 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:16:36,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:16:36,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:16:36,104 INFO L87 Difference]: Start difference. First operand 3284 states and 4859 transitions. Second operand 10 states. [2018-07-23 15:16:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:37,802 INFO L93 Difference]: Finished difference Result 3561 states and 5284 transitions. [2018-07-23 15:16:37,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:16:37,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-23 15:16:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:37,809 INFO L225 Difference]: With dead ends: 3561 [2018-07-23 15:16:37,810 INFO L226 Difference]: Without dead ends: 3559 [2018-07-23 15:16:37,812 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:16:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2018-07-23 15:16:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 3286. [2018-07-23 15:16:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3286 states. [2018-07-23 15:16:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 4860 transitions. [2018-07-23 15:16:39,275 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 4860 transitions. Word has length 25 [2018-07-23 15:16:39,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:39,275 INFO L471 AbstractCegarLoop]: Abstraction has 3286 states and 4860 transitions. [2018-07-23 15:16:39,275 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:16:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 4860 transitions. [2018-07-23 15:16:39,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:39,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:39,278 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:39,278 INFO L414 AbstractCegarLoop]: === Iteration 61 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:39,278 INFO L82 PathProgramCache]: Analyzing trace with hash -760804007, now seen corresponding path program 1 times [2018-07-23 15:16:39,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:39,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:39,298 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:16:39,298 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:16:39,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:16:39,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:16:39,299 INFO L87 Difference]: Start difference. First operand 3286 states and 4860 transitions. Second operand 11 states. [2018-07-23 15:16:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:41,228 INFO L93 Difference]: Finished difference Result 3882 states and 5733 transitions. [2018-07-23 15:16:41,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:16:41,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:16:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:41,233 INFO L225 Difference]: With dead ends: 3882 [2018-07-23 15:16:41,234 INFO L226 Difference]: Without dead ends: 3880 [2018-07-23 15:16:41,235 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:16:41,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2018-07-23 15:16:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3586. [2018-07-23 15:16:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3586 states. [2018-07-23 15:16:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5319 transitions. [2018-07-23 15:16:42,750 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5319 transitions. Word has length 25 [2018-07-23 15:16:42,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:42,750 INFO L471 AbstractCegarLoop]: Abstraction has 3586 states and 5319 transitions. [2018-07-23 15:16:42,750 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:16:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5319 transitions. [2018-07-23 15:16:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:42,752 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:42,753 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:42,753 INFO L414 AbstractCegarLoop]: === Iteration 62 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:42,753 INFO L82 PathProgramCache]: Analyzing trace with hash -764742562, now seen corresponding path program 1 times [2018-07-23 15:16:42,753 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:42,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:42,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:16:42,771 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:16:42,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:16:42,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:16:42,772 INFO L87 Difference]: Start difference. First operand 3586 states and 5319 transitions. Second operand 11 states. [2018-07-23 15:16:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:44,512 INFO L93 Difference]: Finished difference Result 3739 states and 5530 transitions. [2018-07-23 15:16:44,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:16:44,513 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:16:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:44,518 INFO L225 Difference]: With dead ends: 3739 [2018-07-23 15:16:44,518 INFO L226 Difference]: Without dead ends: 3737 [2018-07-23 15:16:44,519 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:16:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2018-07-23 15:16:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3565. [2018-07-23 15:16:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3565 states. [2018-07-23 15:16:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 5287 transitions. [2018-07-23 15:16:46,047 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 5287 transitions. Word has length 25 [2018-07-23 15:16:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:46,047 INFO L471 AbstractCegarLoop]: Abstraction has 3565 states and 5287 transitions. [2018-07-23 15:16:46,047 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:16:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 5287 transitions. [2018-07-23 15:16:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:46,049 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:46,050 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:46,050 INFO L414 AbstractCegarLoop]: === Iteration 63 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:46,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1119735578, now seen corresponding path program 2 times [2018-07-23 15:16:46,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:46,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:46,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:16:46,071 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:16:46,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:16:46,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:16:46,071 INFO L87 Difference]: Start difference. First operand 3565 states and 5287 transitions. Second operand 11 states. [2018-07-23 15:16:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:47,821 INFO L93 Difference]: Finished difference Result 3781 states and 5599 transitions. [2018-07-23 15:16:47,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:16:47,821 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:16:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:47,826 INFO L225 Difference]: With dead ends: 3781 [2018-07-23 15:16:47,827 INFO L226 Difference]: Without dead ends: 3779 [2018-07-23 15:16:47,828 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:16:47,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2018-07-23 15:16:49,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3649. [2018-07-23 15:16:49,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3649 states. [2018-07-23 15:16:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 5423 transitions. [2018-07-23 15:16:49,388 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 5423 transitions. Word has length 25 [2018-07-23 15:16:49,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:49,389 INFO L471 AbstractCegarLoop]: Abstraction has 3649 states and 5423 transitions. [2018-07-23 15:16:49,389 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:16:49,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 5423 transitions. [2018-07-23 15:16:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:49,392 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:49,393 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:49,393 INFO L414 AbstractCegarLoop]: === Iteration 64 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:49,393 INFO L82 PathProgramCache]: Analyzing trace with hash -266056341, now seen corresponding path program 1 times [2018-07-23 15:16:49,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:49,415 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:49,415 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:16:49,415 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:16:49,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:16:49,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:16:49,416 INFO L87 Difference]: Start difference. First operand 3649 states and 5423 transitions. Second operand 11 states. [2018-07-23 15:16:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:51,300 INFO L93 Difference]: Finished difference Result 3933 states and 5840 transitions. [2018-07-23 15:16:51,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:16:51,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:16:51,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:51,305 INFO L225 Difference]: With dead ends: 3933 [2018-07-23 15:16:51,305 INFO L226 Difference]: Without dead ends: 3931 [2018-07-23 15:16:51,307 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:16:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2018-07-23 15:16:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3390. [2018-07-23 15:16:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3390 states. [2018-07-23 15:16:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 5040 transitions. [2018-07-23 15:16:52,684 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 5040 transitions. Word has length 25 [2018-07-23 15:16:52,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:52,685 INFO L471 AbstractCegarLoop]: Abstraction has 3390 states and 5040 transitions. [2018-07-23 15:16:52,685 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:16:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 5040 transitions. [2018-07-23 15:16:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:52,688 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:52,688 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:52,688 INFO L414 AbstractCegarLoop]: === Iteration 65 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:52,688 INFO L82 PathProgramCache]: Analyzing trace with hash -327186069, now seen corresponding path program 2 times [2018-07-23 15:16:52,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:52,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:52,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:16:52,703 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:16:52,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:16:52,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:16:52,703 INFO L87 Difference]: Start difference. First operand 3390 states and 5040 transitions. Second operand 11 states. [2018-07-23 15:16:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:54,417 INFO L93 Difference]: Finished difference Result 3713 states and 5498 transitions. [2018-07-23 15:16:54,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:16:54,417 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:16:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:54,422 INFO L225 Difference]: With dead ends: 3713 [2018-07-23 15:16:54,422 INFO L226 Difference]: Without dead ends: 3711 [2018-07-23 15:16:54,423 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:16:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2018-07-23 15:16:55,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3317. [2018-07-23 15:16:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3317 states. [2018-07-23 15:16:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4921 transitions. [2018-07-23 15:16:55,839 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4921 transitions. Word has length 25 [2018-07-23 15:16:55,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:55,839 INFO L471 AbstractCegarLoop]: Abstraction has 3317 states and 4921 transitions. [2018-07-23 15:16:55,839 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:16:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4921 transitions. [2018-07-23 15:16:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:55,841 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:55,841 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:55,842 INFO L414 AbstractCegarLoop]: === Iteration 66 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:55,842 INFO L82 PathProgramCache]: Analyzing trace with hash -682179085, now seen corresponding path program 1 times [2018-07-23 15:16:55,842 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:55,864 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:55,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:16:55,865 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:16:55,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:16:55,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:16:55,865 INFO L87 Difference]: Start difference. First operand 3317 states and 4921 transitions. Second operand 12 states. [2018-07-23 15:16:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:16:57,533 INFO L93 Difference]: Finished difference Result 3507 states and 5215 transitions. [2018-07-23 15:16:57,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:16:57,533 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-07-23 15:16:57,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:16:57,538 INFO L225 Difference]: With dead ends: 3507 [2018-07-23 15:16:57,538 INFO L226 Difference]: Without dead ends: 3506 [2018-07-23 15:16:57,539 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=242, Invalid=570, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:16:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2018-07-23 15:16:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3311. [2018-07-23 15:16:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2018-07-23 15:16:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4896 transitions. [2018-07-23 15:16:58,934 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4896 transitions. Word has length 25 [2018-07-23 15:16:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:16:58,934 INFO L471 AbstractCegarLoop]: Abstraction has 3311 states and 4896 transitions. [2018-07-23 15:16:58,934 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:16:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4896 transitions. [2018-07-23 15:16:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:16:58,936 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:16:58,936 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:16:58,936 INFO L414 AbstractCegarLoop]: === Iteration 67 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:16:58,937 INFO L82 PathProgramCache]: Analyzing trace with hash -682089422, now seen corresponding path program 1 times [2018-07-23 15:16:58,937 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:16:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:16:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:16:58,958 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:16:58,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:16:58,958 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:16:58,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:16:58,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:16:58,959 INFO L87 Difference]: Start difference. First operand 3311 states and 4896 transitions. Second operand 11 states. [2018-07-23 15:17:00,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:00,811 INFO L93 Difference]: Finished difference Result 3779 states and 5560 transitions. [2018-07-23 15:17:00,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:17:00,811 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:17:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:00,816 INFO L225 Difference]: With dead ends: 3779 [2018-07-23 15:17:00,816 INFO L226 Difference]: Without dead ends: 3777 [2018-07-23 15:17:00,817 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:17:00,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2018-07-23 15:17:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3309. [2018-07-23 15:17:02,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3309 states. [2018-07-23 15:17:02,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4898 transitions. [2018-07-23 15:17:02,218 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4898 transitions. Word has length 25 [2018-07-23 15:17:02,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:02,218 INFO L471 AbstractCegarLoop]: Abstraction has 3309 states and 4898 transitions. [2018-07-23 15:17:02,218 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4898 transitions. [2018-07-23 15:17:02,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:02,220 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:02,221 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:02,221 INFO L414 AbstractCegarLoop]: === Iteration 68 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:02,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1834260598, now seen corresponding path program 2 times [2018-07-23 15:17:02,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-23 15:17:02,237 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:02,237 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:17:02,238 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:02,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:02,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:02,238 INFO L87 Difference]: Start difference. First operand 3309 states and 4898 transitions. Second operand 11 states. [2018-07-23 15:17:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:04,162 INFO L93 Difference]: Finished difference Result 3453 states and 5091 transitions. [2018-07-23 15:17:04,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:17:04,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:17:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:04,168 INFO L225 Difference]: With dead ends: 3453 [2018-07-23 15:17:04,168 INFO L226 Difference]: Without dead ends: 3452 [2018-07-23 15:17:04,170 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:17:04,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3452 states. [2018-07-23 15:17:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3452 to 3335. [2018-07-23 15:17:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3335 states. [2018-07-23 15:17:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3335 states to 3335 states and 4934 transitions. [2018-07-23 15:17:05,648 INFO L78 Accepts]: Start accepts. Automaton has 3335 states and 4934 transitions. Word has length 25 [2018-07-23 15:17:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:05,648 INFO L471 AbstractCegarLoop]: Abstraction has 3335 states and 4934 transitions. [2018-07-23 15:17:05,649 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3335 states and 4934 transitions. [2018-07-23 15:17:05,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:05,651 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:05,651 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:05,651 INFO L414 AbstractCegarLoop]: === Iteration 69 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:05,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1045899279, now seen corresponding path program 1 times [2018-07-23 15:17:05,651 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:05,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:05,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:17:05,673 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:05,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:05,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:05,674 INFO L87 Difference]: Start difference. First operand 3335 states and 4934 transitions. Second operand 11 states. [2018-07-23 15:17:07,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:07,569 INFO L93 Difference]: Finished difference Result 3881 states and 5736 transitions. [2018-07-23 15:17:07,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-23 15:17:07,569 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:17:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:07,574 INFO L225 Difference]: With dead ends: 3881 [2018-07-23 15:17:07,574 INFO L226 Difference]: Without dead ends: 3879 [2018-07-23 15:17:07,576 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2018-07-23 15:17:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2018-07-23 15:17:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3492. [2018-07-23 15:17:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3492 states. [2018-07-23 15:17:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 5163 transitions. [2018-07-23 15:17:09,134 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 5163 transitions. Word has length 25 [2018-07-23 15:17:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:09,135 INFO L471 AbstractCegarLoop]: Abstraction has 3492 states and 5163 transitions. [2018-07-23 15:17:09,135 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 5163 transitions. [2018-07-23 15:17:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:09,137 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:09,137 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:09,137 INFO L414 AbstractCegarLoop]: === Iteration 70 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash -746629056, now seen corresponding path program 1 times [2018-07-23 15:17:09,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:17:09,155 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:09,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:17:09,155 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:17:09,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:17:09,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:17:09,155 INFO L87 Difference]: Start difference. First operand 3492 states and 5163 transitions. Second operand 10 states. [2018-07-23 15:17:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:10,947 INFO L93 Difference]: Finished difference Result 3625 states and 5347 transitions. [2018-07-23 15:17:10,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:17:10,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-23 15:17:10,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:10,951 INFO L225 Difference]: With dead ends: 3625 [2018-07-23 15:17:10,951 INFO L226 Difference]: Without dead ends: 3624 [2018-07-23 15:17:10,953 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:17:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2018-07-23 15:17:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3506. [2018-07-23 15:17:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3506 states. [2018-07-23 15:17:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 5185 transitions. [2018-07-23 15:17:12,549 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 5185 transitions. Word has length 25 [2018-07-23 15:17:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:12,549 INFO L471 AbstractCegarLoop]: Abstraction has 3506 states and 5185 transitions. [2018-07-23 15:17:12,549 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:17:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 5185 transitions. [2018-07-23 15:17:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:12,551 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:12,551 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, 1] [2018-07-23 15:17:12,551 INFO L414 AbstractCegarLoop]: === Iteration 71 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:12,552 INFO L82 PathProgramCache]: Analyzing trace with hash -746540097, now seen corresponding path program 1 times [2018-07-23 15:17:12,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:12,567 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 15:17:12,567 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:12,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:17:12,567 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:17:12,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:17:12,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:17:12,568 INFO L87 Difference]: Start difference. First operand 3506 states and 5185 transitions. Second operand 10 states. [2018-07-23 15:17:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:14,466 INFO L93 Difference]: Finished difference Result 3779 states and 5600 transitions. [2018-07-23 15:17:14,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 15:17:14,467 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-23 15:17:14,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:14,471 INFO L225 Difference]: With dead ends: 3779 [2018-07-23 15:17:14,471 INFO L226 Difference]: Without dead ends: 3777 [2018-07-23 15:17:14,473 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2018-07-23 15:17:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2018-07-23 15:17:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3508. [2018-07-23 15:17:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3508 states. [2018-07-23 15:17:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3508 states to 3508 states and 5186 transitions. [2018-07-23 15:17:16,116 INFO L78 Accepts]: Start accepts. Automaton has 3508 states and 5186 transitions. Word has length 25 [2018-07-23 15:17:16,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:16,117 INFO L471 AbstractCegarLoop]: Abstraction has 3508 states and 5186 transitions. [2018-07-23 15:17:16,117 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:17:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3508 states and 5186 transitions. [2018-07-23 15:17:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:16,119 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:16,119 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:16,119 INFO L414 AbstractCegarLoop]: === Iteration 72 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:16,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2007923005, now seen corresponding path program 1 times [2018-07-23 15:17:16,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:16,139 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:16,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:17:16,139 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:16,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:16,140 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:16,140 INFO L87 Difference]: Start difference. First operand 3508 states and 5186 transitions. Second operand 11 states. [2018-07-23 15:17:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:18,484 INFO L93 Difference]: Finished difference Result 4106 states and 6063 transitions. [2018-07-23 15:17:18,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:17:18,484 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:17:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:18,489 INFO L225 Difference]: With dead ends: 4106 [2018-07-23 15:17:18,489 INFO L226 Difference]: Without dead ends: 4104 [2018-07-23 15:17:18,491 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:17:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2018-07-23 15:17:20,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3808. [2018-07-23 15:17:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3808 states. [2018-07-23 15:17:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 5645 transitions. [2018-07-23 15:17:20,242 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 5645 transitions. Word has length 25 [2018-07-23 15:17:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:20,242 INFO L471 AbstractCegarLoop]: Abstraction has 3808 states and 5645 transitions. [2018-07-23 15:17:20,242 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 5645 transitions. [2018-07-23 15:17:20,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:20,245 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:20,245 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:20,245 INFO L414 AbstractCegarLoop]: === Iteration 73 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:20,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1294788559, now seen corresponding path program 2 times [2018-07-23 15:17:20,245 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:20,267 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:20,268 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:17:20,268 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:20,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:20,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:20,268 INFO L87 Difference]: Start difference. First operand 3808 states and 5645 transitions. Second operand 11 states. [2018-07-23 15:17:22,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:22,172 INFO L93 Difference]: Finished difference Result 4020 states and 5953 transitions. [2018-07-23 15:17:22,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-23 15:17:22,173 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:17:22,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:22,178 INFO L225 Difference]: With dead ends: 4020 [2018-07-23 15:17:22,178 INFO L226 Difference]: Without dead ends: 4018 [2018-07-23 15:17:22,179 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:17:22,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2018-07-23 15:17:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 3902. [2018-07-23 15:17:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3902 states. [2018-07-23 15:17:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3902 states to 3902 states and 5795 transitions. [2018-07-23 15:17:23,930 INFO L78 Accepts]: Start accepts. Automaton has 3902 states and 5795 transitions. Word has length 25 [2018-07-23 15:17:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:23,930 INFO L471 AbstractCegarLoop]: Abstraction has 3902 states and 5795 transitions. [2018-07-23 15:17:23,930 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:23,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states and 5795 transitions. [2018-07-23 15:17:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:23,932 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:23,932 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:23,933 INFO L414 AbstractCegarLoop]: === Iteration 74 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:23,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1649781575, now seen corresponding path program 1 times [2018-07-23 15:17:23,933 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:23,952 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:23,953 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:17:23,953 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:23,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:23,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:23,953 INFO L87 Difference]: Start difference. First operand 3902 states and 5795 transitions. Second operand 11 states. [2018-07-23 15:17:25,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:25,910 INFO L93 Difference]: Finished difference Result 4050 states and 5999 transitions. [2018-07-23 15:17:25,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:17:25,910 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:17:25,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:25,915 INFO L225 Difference]: With dead ends: 4050 [2018-07-23 15:17:25,915 INFO L226 Difference]: Without dead ends: 4048 [2018-07-23 15:17:25,916 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2018-07-23 15:17:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2018-07-23 15:17:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 3881. [2018-07-23 15:17:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3881 states. [2018-07-23 15:17:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3881 states to 3881 states and 5763 transitions. [2018-07-23 15:17:27,654 INFO L78 Accepts]: Start accepts. Automaton has 3881 states and 5763 transitions. Word has length 25 [2018-07-23 15:17:27,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:27,655 INFO L471 AbstractCegarLoop]: Abstraction has 3881 states and 5763 transitions. [2018-07-23 15:17:27,655 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:27,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3881 states and 5763 transitions. [2018-07-23 15:17:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:27,657 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:27,657 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:27,657 INFO L414 AbstractCegarLoop]: === Iteration 75 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:27,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1238220129, now seen corresponding path program 3 times [2018-07-23 15:17:27,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:27,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:27,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:17:27,676 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:17:27,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:17:27,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:17:27,677 INFO L87 Difference]: Start difference. First operand 3881 states and 5763 transitions. Second operand 12 states. [2018-07-23 15:17:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:29,868 INFO L93 Difference]: Finished difference Result 4100 states and 6121 transitions. [2018-07-23 15:17:29,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:17:29,868 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-07-23 15:17:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:29,872 INFO L225 Difference]: With dead ends: 4100 [2018-07-23 15:17:29,872 INFO L226 Difference]: Without dead ends: 4099 [2018-07-23 15:17:29,873 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:17:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2018-07-23 15:17:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 3881. [2018-07-23 15:17:31,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3881 states. [2018-07-23 15:17:31,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3881 states to 3881 states and 5751 transitions. [2018-07-23 15:17:31,630 INFO L78 Accepts]: Start accepts. Automaton has 3881 states and 5751 transitions. Word has length 25 [2018-07-23 15:17:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:31,630 INFO L471 AbstractCegarLoop]: Abstraction has 3881 states and 5751 transitions. [2018-07-23 15:17:31,630 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:17:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3881 states and 5751 transitions. [2018-07-23 15:17:31,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:31,632 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:31,632 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:31,633 INFO L414 AbstractCegarLoop]: === Iteration 76 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:31,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1238131170, now seen corresponding path program 1 times [2018-07-23 15:17:31,633 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:31,650 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:31,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:17:31,650 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:31,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:31,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:31,651 INFO L87 Difference]: Start difference. First operand 3881 states and 5751 transitions. Second operand 11 states. [2018-07-23 15:17:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:33,832 INFO L93 Difference]: Finished difference Result 4334 states and 6405 transitions. [2018-07-23 15:17:33,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-23 15:17:33,832 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:17:33,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:33,838 INFO L225 Difference]: With dead ends: 4334 [2018-07-23 15:17:33,838 INFO L226 Difference]: Without dead ends: 4332 [2018-07-23 15:17:33,839 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:17:33,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2018-07-23 15:17:35,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3884. [2018-07-23 15:17:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3884 states. [2018-07-23 15:17:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5761 transitions. [2018-07-23 15:17:35,607 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5761 transitions. Word has length 25 [2018-07-23 15:17:35,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:35,607 INFO L471 AbstractCegarLoop]: Abstraction has 3884 states and 5761 transitions. [2018-07-23 15:17:35,607 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5761 transitions. [2018-07-23 15:17:35,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:35,610 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:35,610 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:35,610 INFO L414 AbstractCegarLoop]: === Iteration 77 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:35,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1593213145, now seen corresponding path program 2 times [2018-07-23 15:17:35,610 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:35,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:35,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:17:35,625 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:35,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:35,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:35,626 INFO L87 Difference]: Start difference. First operand 3884 states and 5761 transitions. Second operand 11 states. [2018-07-23 15:17:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:37,684 INFO L93 Difference]: Finished difference Result 4233 states and 6284 transitions. [2018-07-23 15:17:37,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 15:17:37,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:17:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:37,689 INFO L225 Difference]: With dead ends: 4233 [2018-07-23 15:17:37,690 INFO L226 Difference]: Without dead ends: 4231 [2018-07-23 15:17:37,691 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2018-07-23 15:17:37,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2018-07-23 15:17:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 3898. [2018-07-23 15:17:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3898 states. [2018-07-23 15:17:39,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5767 transitions. [2018-07-23 15:17:39,570 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5767 transitions. Word has length 25 [2018-07-23 15:17:39,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:39,571 INFO L471 AbstractCegarLoop]: Abstraction has 3898 states and 5767 transitions. [2018-07-23 15:17:39,571 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:39,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5767 transitions. [2018-07-23 15:17:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-23 15:17:39,573 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:39,573 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:39,573 INFO L414 AbstractCegarLoop]: === Iteration 78 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:39,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1654342873, now seen corresponding path program 3 times [2018-07-23 15:17:39,573 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:17:39,592 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:39,592 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:17:39,592 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:17:39,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:17:39,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:17:39,593 INFO L87 Difference]: Start difference. First operand 3898 states and 5767 transitions. Second operand 11 states. [2018-07-23 15:17:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:41,745 INFO L93 Difference]: Finished difference Result 4193 states and 6183 transitions. [2018-07-23 15:17:41,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:17:41,746 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-23 15:17:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:41,751 INFO L225 Difference]: With dead ends: 4193 [2018-07-23 15:17:41,751 INFO L226 Difference]: Without dead ends: 4191 [2018-07-23 15:17:41,753 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:17:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2018-07-23 15:17:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 3545. [2018-07-23 15:17:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-07-23 15:17:43,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 5244 transitions. [2018-07-23 15:17:43,477 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 5244 transitions. Word has length 25 [2018-07-23 15:17:43,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:43,477 INFO L471 AbstractCegarLoop]: Abstraction has 3545 states and 5244 transitions. [2018-07-23 15:17:43,477 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:17:43,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 5244 transitions. [2018-07-23 15:17:43,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:17:43,479 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:43,479 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:43,480 INFO L414 AbstractCegarLoop]: === Iteration 79 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:43,480 INFO L82 PathProgramCache]: Analyzing trace with hash 787908893, now seen corresponding path program 3 times [2018-07-23 15:17:43,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-23 15:17:43,491 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:43,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:17:43,492 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:17:43,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:17:43,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:17:43,492 INFO L87 Difference]: Start difference. First operand 3545 states and 5244 transitions. Second operand 9 states. [2018-07-23 15:17:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:45,486 INFO L93 Difference]: Finished difference Result 3941 states and 5794 transitions. [2018-07-23 15:17:45,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:17:45,486 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-23 15:17:45,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:45,491 INFO L225 Difference]: With dead ends: 3941 [2018-07-23 15:17:45,491 INFO L226 Difference]: Without dead ends: 3939 [2018-07-23 15:17:45,493 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:17:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2018-07-23 15:17:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3561. [2018-07-23 15:17:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3561 states. [2018-07-23 15:17:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5266 transitions. [2018-07-23 15:17:47,192 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5266 transitions. Word has length 26 [2018-07-23 15:17:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:47,193 INFO L471 AbstractCegarLoop]: Abstraction has 3561 states and 5266 transitions. [2018-07-23 15:17:47,193 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:17:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5266 transitions. [2018-07-23 15:17:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:17:47,195 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:47,196 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:47,196 INFO L414 AbstractCegarLoop]: === Iteration 80 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:47,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1399836586, now seen corresponding path program 1 times [2018-07-23 15:17:47,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:17:47,207 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:47,207 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:17:47,208 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:17:47,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:17:47,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:17:47,208 INFO L87 Difference]: Start difference. First operand 3561 states and 5266 transitions. Second operand 9 states. [2018-07-23 15:17:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:49,370 INFO L93 Difference]: Finished difference Result 4069 states and 5985 transitions. [2018-07-23 15:17:49,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:17:49,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-23 15:17:49,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:49,375 INFO L225 Difference]: With dead ends: 4069 [2018-07-23 15:17:49,375 INFO L226 Difference]: Without dead ends: 4067 [2018-07-23 15:17:49,376 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:17:49,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2018-07-23 15:17:51,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 3477. [2018-07-23 15:17:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3477 states. [2018-07-23 15:17:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3477 states to 3477 states and 5132 transitions. [2018-07-23 15:17:51,082 INFO L78 Accepts]: Start accepts. Automaton has 3477 states and 5132 transitions. Word has length 26 [2018-07-23 15:17:51,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:51,082 INFO L471 AbstractCegarLoop]: Abstraction has 3477 states and 5132 transitions. [2018-07-23 15:17:51,082 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:17:51,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states and 5132 transitions. [2018-07-23 15:17:51,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:17:51,084 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:51,084 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, 1, 1] [2018-07-23 15:17:51,084 INFO L414 AbstractCegarLoop]: === Iteration 81 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:51,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2111506926, now seen corresponding path program 1 times [2018-07-23 15:17:51,085 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:51,097 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 15:17:51,098 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:51,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:17:51,098 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:17:51,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:17:51,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:17:51,098 INFO L87 Difference]: Start difference. First operand 3477 states and 5132 transitions. Second operand 9 states. [2018-07-23 15:17:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:53,288 INFO L93 Difference]: Finished difference Result 4012 states and 5890 transitions. [2018-07-23 15:17:53,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:17:53,289 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-23 15:17:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:53,293 INFO L225 Difference]: With dead ends: 4012 [2018-07-23 15:17:53,293 INFO L226 Difference]: Without dead ends: 4010 [2018-07-23 15:17:53,294 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:17:53,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2018-07-23 15:17:55,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3427. [2018-07-23 15:17:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3427 states. [2018-07-23 15:17:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 5054 transitions. [2018-07-23 15:17:55,020 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 5054 transitions. Word has length 26 [2018-07-23 15:17:55,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:55,020 INFO L471 AbstractCegarLoop]: Abstraction has 3427 states and 5054 transitions. [2018-07-23 15:17:55,020 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:17:55,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 5054 transitions. [2018-07-23 15:17:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:17:55,024 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:55,024 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:17:55,024 INFO L414 AbstractCegarLoop]: === Iteration 82 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:55,024 INFO L82 PathProgramCache]: Analyzing trace with hash -538919271, now seen corresponding path program 3 times [2018-07-23 15:17:55,024 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-23 15:17:55,039 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:55,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:17:55,039 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:17:55,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:17:55,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:17:55,040 INFO L87 Difference]: Start difference. First operand 3427 states and 5054 transitions. Second operand 9 states. [2018-07-23 15:17:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:17:57,143 INFO L93 Difference]: Finished difference Result 3823 states and 5604 transitions. [2018-07-23 15:17:57,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:17:57,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-23 15:17:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:17:57,148 INFO L225 Difference]: With dead ends: 3823 [2018-07-23 15:17:57,148 INFO L226 Difference]: Without dead ends: 3821 [2018-07-23 15:17:57,149 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:17:57,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2018-07-23 15:17:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 3443. [2018-07-23 15:17:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2018-07-23 15:17:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 5076 transitions. [2018-07-23 15:17:58,909 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 5076 transitions. Word has length 26 [2018-07-23 15:17:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:17:58,909 INFO L471 AbstractCegarLoop]: Abstraction has 3443 states and 5076 transitions. [2018-07-23 15:17:58,909 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:17:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 5076 transitions. [2018-07-23 15:17:58,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:17:58,911 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:17:58,912 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, 1, 1] [2018-07-23 15:17:58,912 INFO L414 AbstractCegarLoop]: === Iteration 83 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:17:58,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1694948846, now seen corresponding path program 1 times [2018-07-23 15:17:58,912 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:17:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:17:58,930 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 15:17:58,930 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:17:58,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:17:58,931 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:17:58,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:17:58,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:17:58,931 INFO L87 Difference]: Start difference. First operand 3443 states and 5076 transitions. Second operand 9 states. [2018-07-23 15:18:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:01,162 INFO L93 Difference]: Finished difference Result 3990 states and 5852 transitions. [2018-07-23 15:18:01,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:18:01,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-23 15:18:01,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:01,167 INFO L225 Difference]: With dead ends: 3990 [2018-07-23 15:18:01,168 INFO L226 Difference]: Without dead ends: 3988 [2018-07-23 15:18:01,169 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:18:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2018-07-23 15:18:02,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3412. [2018-07-23 15:18:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3412 states. [2018-07-23 15:18:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5028 transitions. [2018-07-23 15:18:02,970 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5028 transitions. Word has length 26 [2018-07-23 15:18:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:02,970 INFO L471 AbstractCegarLoop]: Abstraction has 3412 states and 5028 transitions. [2018-07-23 15:18:02,970 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:18:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5028 transitions. [2018-07-23 15:18:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-23 15:18:02,972 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:02,972 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:02,972 INFO L414 AbstractCegarLoop]: === Iteration 84 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:02,972 INFO L82 PathProgramCache]: Analyzing trace with hash 729902152, now seen corresponding path program 1 times [2018-07-23 15:18:02,972 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:18:02,987 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:02,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:18:02,987 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:18:02,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:18:02,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:18:02,987 INFO L87 Difference]: Start difference. First operand 3412 states and 5028 transitions. Second operand 9 states. [2018-07-23 15:18:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:05,170 INFO L93 Difference]: Finished difference Result 3873 states and 5676 transitions. [2018-07-23 15:18:05,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 15:18:05,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-23 15:18:05,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:05,175 INFO L225 Difference]: With dead ends: 3873 [2018-07-23 15:18:05,175 INFO L226 Difference]: Without dead ends: 3871 [2018-07-23 15:18:05,176 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2018-07-23 15:18:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2018-07-23 15:18:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3309. [2018-07-23 15:18:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3309 states. [2018-07-23 15:18:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4864 transitions. [2018-07-23 15:18:06,964 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4864 transitions. Word has length 26 [2018-07-23 15:18:06,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:06,964 INFO L471 AbstractCegarLoop]: Abstraction has 3309 states and 4864 transitions. [2018-07-23 15:18:06,964 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:18:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4864 transitions. [2018-07-23 15:18:06,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:06,968 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:06,968 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:06,968 INFO L414 AbstractCegarLoop]: === Iteration 85 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:06,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1263161747, now seen corresponding path program 2 times [2018-07-23 15:18:06,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:06,990 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:06,990 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:18:06,990 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:18:06,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:18:06,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:18:06,991 INFO L87 Difference]: Start difference. First operand 3309 states and 4864 transitions. Second operand 10 states. [2018-07-23 15:18:09,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:09,224 INFO L93 Difference]: Finished difference Result 3625 states and 5291 transitions. [2018-07-23 15:18:09,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:18:09,224 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-23 15:18:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:09,228 INFO L225 Difference]: With dead ends: 3625 [2018-07-23 15:18:09,228 INFO L226 Difference]: Without dead ends: 3623 [2018-07-23 15:18:09,229 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:18:09,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2018-07-23 15:18:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3411. [2018-07-23 15:18:11,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3411 states. [2018-07-23 15:18:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 5008 transitions. [2018-07-23 15:18:11,088 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 5008 transitions. Word has length 29 [2018-07-23 15:18:11,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:11,088 INFO L471 AbstractCegarLoop]: Abstraction has 3411 states and 5008 transitions. [2018-07-23 15:18:11,088 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:18:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 5008 transitions. [2018-07-23 15:18:11,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:11,091 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:11,091 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:11,092 INFO L414 AbstractCegarLoop]: === Iteration 86 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:11,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1259223192, now seen corresponding path program 2 times [2018-07-23 15:18:11,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:11,110 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:11,110 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:18:11,111 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:18:11,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:18:11,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:18:11,111 INFO L87 Difference]: Start difference. First operand 3411 states and 5008 transitions. Second operand 10 states. [2018-07-23 15:18:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:13,321 INFO L93 Difference]: Finished difference Result 3682 states and 5400 transitions. [2018-07-23 15:18:13,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-23 15:18:13,321 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-23 15:18:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:13,326 INFO L225 Difference]: With dead ends: 3682 [2018-07-23 15:18:13,326 INFO L226 Difference]: Without dead ends: 3680 [2018-07-23 15:18:13,327 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:18:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2018-07-23 15:18:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3422. [2018-07-23 15:18:15,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3422 states. [2018-07-23 15:18:15,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 5023 transitions. [2018-07-23 15:18:15,194 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 5023 transitions. Word has length 29 [2018-07-23 15:18:15,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:15,194 INFO L471 AbstractCegarLoop]: Abstraction has 3422 states and 5023 transitions. [2018-07-23 15:18:15,194 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:18:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 5023 transitions. [2018-07-23 15:18:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:15,197 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:15,197 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:15,197 INFO L414 AbstractCegarLoop]: === Iteration 87 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:15,197 INFO L82 PathProgramCache]: Analyzing trace with hash 904319839, now seen corresponding path program 2 times [2018-07-23 15:18:15,197 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-23 15:18:15,214 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:15,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:18:15,214 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:18:15,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:18:15,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:18:15,215 INFO L87 Difference]: Start difference. First operand 3422 states and 5023 transitions. Second operand 9 states. [2018-07-23 15:18:17,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:17,339 INFO L93 Difference]: Finished difference Result 3641 states and 5314 transitions. [2018-07-23 15:18:17,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:18:17,339 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-07-23 15:18:17,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:17,343 INFO L225 Difference]: With dead ends: 3641 [2018-07-23 15:18:17,343 INFO L226 Difference]: Without dead ends: 3639 [2018-07-23 15:18:17,344 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:18:17,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2018-07-23 15:18:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3420. [2018-07-23 15:18:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3420 states. [2018-07-23 15:18:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 5021 transitions. [2018-07-23 15:18:19,205 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 5021 transitions. Word has length 29 [2018-07-23 15:18:19,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:19,205 INFO L471 AbstractCegarLoop]: Abstraction has 3420 states and 5021 transitions. [2018-07-23 15:18:19,205 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:18:19,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 5021 transitions. [2018-07-23 15:18:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:19,208 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:19,208 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:19,208 INFO L414 AbstractCegarLoop]: === Iteration 88 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:19,208 INFO L82 PathProgramCache]: Analyzing trace with hash 987070039, now seen corresponding path program 3 times [2018-07-23 15:18:19,209 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:19,228 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:19,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:18:19,228 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:18:19,228 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:18:19,228 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:18:19,229 INFO L87 Difference]: Start difference. First operand 3420 states and 5021 transitions. Second operand 12 states. [2018-07-23 15:18:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:21,500 INFO L93 Difference]: Finished difference Result 3801 states and 5543 transitions. [2018-07-23 15:18:21,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:18:21,501 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-23 15:18:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:21,505 INFO L225 Difference]: With dead ends: 3801 [2018-07-23 15:18:21,505 INFO L226 Difference]: Without dead ends: 3799 [2018-07-23 15:18:21,506 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:18:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2018-07-23 15:18:23,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 3547. [2018-07-23 15:18:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3547 states. [2018-07-23 15:18:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 5208 transitions. [2018-07-23 15:18:23,469 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 5208 transitions. Word has length 29 [2018-07-23 15:18:23,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:23,469 INFO L471 AbstractCegarLoop]: Abstraction has 3547 states and 5208 transitions. [2018-07-23 15:18:23,469 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:18:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 5208 transitions. [2018-07-23 15:18:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:23,472 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:23,472 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:23,472 INFO L414 AbstractCegarLoop]: === Iteration 89 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:23,472 INFO L82 PathProgramCache]: Analyzing trace with hash 983131868, now seen corresponding path program 1 times [2018-07-23 15:18:23,472 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:18:23,487 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:23,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:18:23,488 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:18:23,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:18:23,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:18:23,488 INFO L87 Difference]: Start difference. First operand 3547 states and 5208 transitions. Second operand 11 states. [2018-07-23 15:18:26,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:26,221 INFO L93 Difference]: Finished difference Result 3952 states and 5785 transitions. [2018-07-23 15:18:26,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:18:26,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-23 15:18:26,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:26,225 INFO L225 Difference]: With dead ends: 3952 [2018-07-23 15:18:26,225 INFO L226 Difference]: Without dead ends: 3950 [2018-07-23 15:18:26,226 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:18:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2018-07-23 15:18:28,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3525. [2018-07-23 15:18:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3525 states. [2018-07-23 15:18:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5180 transitions. [2018-07-23 15:18:28,316 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5180 transitions. Word has length 29 [2018-07-23 15:18:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:28,316 INFO L471 AbstractCegarLoop]: Abstraction has 3525 states and 5180 transitions. [2018-07-23 15:18:28,316 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:18:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5180 transitions. [2018-07-23 15:18:28,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:28,318 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:28,319 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:28,319 INFO L414 AbstractCegarLoop]: === Iteration 90 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:28,319 INFO L82 PathProgramCache]: Analyzing trace with hash 983131484, now seen corresponding path program 3 times [2018-07-23 15:18:28,319 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:18:28,334 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:28,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:18:28,334 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:18:28,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:18:28,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:18:28,335 INFO L87 Difference]: Start difference. First operand 3525 states and 5180 transitions. Second operand 11 states. [2018-07-23 15:18:30,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:30,901 INFO L93 Difference]: Finished difference Result 3893 states and 5708 transitions. [2018-07-23 15:18:30,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-23 15:18:30,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-23 15:18:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:30,905 INFO L225 Difference]: With dead ends: 3893 [2018-07-23 15:18:30,905 INFO L226 Difference]: Without dead ends: 3891 [2018-07-23 15:18:30,905 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2018-07-23 15:18:30,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2018-07-23 15:18:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3651. [2018-07-23 15:18:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3651 states. [2018-07-23 15:18:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 5369 transitions. [2018-07-23 15:18:33,042 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 5369 transitions. Word has length 29 [2018-07-23 15:18:33,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:33,042 INFO L471 AbstractCegarLoop]: Abstraction has 3651 states and 5369 transitions. [2018-07-23 15:18:33,042 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:18:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 5369 transitions. [2018-07-23 15:18:33,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:33,044 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:33,044 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:33,044 INFO L414 AbstractCegarLoop]: === Iteration 91 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:33,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1481907752, now seen corresponding path program 1 times [2018-07-23 15:18:33,045 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:18:33,060 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:33,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:18:33,060 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:18:33,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:18:33,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:18:33,061 INFO L87 Difference]: Start difference. First operand 3651 states and 5369 transitions. Second operand 11 states. [2018-07-23 15:18:36,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:36,375 INFO L93 Difference]: Finished difference Result 4812 states and 7078 transitions. [2018-07-23 15:18:36,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:18:36,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-23 15:18:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:36,380 INFO L225 Difference]: With dead ends: 4812 [2018-07-23 15:18:36,380 INFO L226 Difference]: Without dead ends: 4810 [2018-07-23 15:18:36,381 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2018-07-23 15:18:36,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2018-07-23 15:18:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4121. [2018-07-23 15:18:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4121 states. [2018-07-23 15:18:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 6087 transitions. [2018-07-23 15:18:38,753 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 6087 transitions. Word has length 29 [2018-07-23 15:18:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:38,753 INFO L471 AbstractCegarLoop]: Abstraction has 4121 states and 6087 transitions. [2018-07-23 15:18:38,754 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:18:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 6087 transitions. [2018-07-23 15:18:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:38,756 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:38,756 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:38,756 INFO L414 AbstractCegarLoop]: === Iteration 92 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:38,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1420688361, now seen corresponding path program 1 times [2018-07-23 15:18:38,757 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:18:38,772 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:38,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:18:38,772 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:18:38,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:18:38,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:18:38,772 INFO L87 Difference]: Start difference. First operand 4121 states and 6087 transitions. Second operand 11 states. [2018-07-23 15:18:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:42,270 INFO L93 Difference]: Finished difference Result 4922 states and 7248 transitions. [2018-07-23 15:18:42,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:18:42,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-23 15:18:42,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:42,276 INFO L225 Difference]: With dead ends: 4922 [2018-07-23 15:18:42,277 INFO L226 Difference]: Without dead ends: 4920 [2018-07-23 15:18:42,278 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:18:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2018-07-23 15:18:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4061. [2018-07-23 15:18:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4061 states. [2018-07-23 15:18:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 5988 transitions. [2018-07-23 15:18:44,687 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 5988 transitions. Word has length 29 [2018-07-23 15:18:44,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:44,687 INFO L471 AbstractCegarLoop]: Abstraction has 4061 states and 5988 transitions. [2018-07-23 15:18:44,687 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:18:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 5988 transitions. [2018-07-23 15:18:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:44,690 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:44,690 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:44,690 INFO L414 AbstractCegarLoop]: === Iteration 93 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:44,690 INFO L82 PathProgramCache]: Analyzing trace with hash -474699493, now seen corresponding path program 4 times [2018-07-23 15:18:44,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 15:18:44,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:44,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:18:44,706 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:18:44,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:18:44,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:18:44,707 INFO L87 Difference]: Start difference. First operand 4061 states and 5988 transitions. Second operand 12 states. [2018-07-23 15:18:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:47,572 INFO L93 Difference]: Finished difference Result 4233 states and 6241 transitions. [2018-07-23 15:18:47,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 15:18:47,572 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-23 15:18:47,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:47,577 INFO L225 Difference]: With dead ends: 4233 [2018-07-23 15:18:47,578 INFO L226 Difference]: Without dead ends: 4232 [2018-07-23 15:18:47,579 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:18:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2018-07-23 15:18:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 3882. [2018-07-23 15:18:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3882 states. [2018-07-23 15:18:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5730 transitions. [2018-07-23 15:18:49,950 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5730 transitions. Word has length 29 [2018-07-23 15:18:49,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:49,950 INFO L471 AbstractCegarLoop]: Abstraction has 3882 states and 5730 transitions. [2018-07-23 15:18:49,950 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:18:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5730 transitions. [2018-07-23 15:18:49,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:49,953 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:49,953 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:49,953 INFO L414 AbstractCegarLoop]: === Iteration 94 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:49,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2006031348, now seen corresponding path program 1 times [2018-07-23 15:18:49,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-23 15:18:49,969 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:49,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:18:49,969 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:18:49,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:18:49,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:18:49,969 INFO L87 Difference]: Start difference. First operand 3882 states and 5730 transitions. Second operand 11 states. [2018-07-23 15:18:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:52,934 INFO L93 Difference]: Finished difference Result 4266 states and 6268 transitions. [2018-07-23 15:18:52,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-23 15:18:52,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-23 15:18:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:52,940 INFO L225 Difference]: With dead ends: 4266 [2018-07-23 15:18:52,940 INFO L226 Difference]: Without dead ends: 4264 [2018-07-23 15:18:52,942 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2018-07-23 15:18:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2018-07-23 15:18:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 3417. [2018-07-23 15:18:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3417 states. [2018-07-23 15:18:55,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 5047 transitions. [2018-07-23 15:18:55,130 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 5047 transitions. Word has length 29 [2018-07-23 15:18:55,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:18:55,130 INFO L471 AbstractCegarLoop]: Abstraction has 3417 states and 5047 transitions. [2018-07-23 15:18:55,130 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:18:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 5047 transitions. [2018-07-23 15:18:55,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:18:55,133 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:18:55,133 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:18:55,133 INFO L414 AbstractCegarLoop]: === Iteration 95 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:18:55,133 INFO L82 PathProgramCache]: Analyzing trace with hash -478637664, now seen corresponding path program 2 times [2018-07-23 15:18:55,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:18:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:18:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 15:18:55,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:18:55,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:18:55,156 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:18:55,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:18:55,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:18:55,157 INFO L87 Difference]: Start difference. First operand 3417 states and 5047 transitions. Second operand 12 states. [2018-07-23 15:18:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:18:58,619 INFO L93 Difference]: Finished difference Result 4483 states and 6607 transitions. [2018-07-23 15:18:58,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:18:58,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-23 15:18:58,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:18:58,626 INFO L225 Difference]: With dead ends: 4483 [2018-07-23 15:18:58,626 INFO L226 Difference]: Without dead ends: 4481 [2018-07-23 15:18:58,627 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:18:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2018-07-23 15:19:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 3901. [2018-07-23 15:19:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3901 states. [2018-07-23 15:19:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 5762 transitions. [2018-07-23 15:19:01,208 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 5762 transitions. Word has length 29 [2018-07-23 15:19:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:01,208 INFO L471 AbstractCegarLoop]: Abstraction has 3901 states and 5762 transitions. [2018-07-23 15:19:01,208 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 15:19:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 5762 transitions. [2018-07-23 15:19:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:19:01,211 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:01,211 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:19:01,211 INFO L414 AbstractCegarLoop]: === Iteration 96 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:19:01,212 INFO L82 PathProgramCache]: Analyzing trace with hash -478638048, now seen corresponding path program 4 times [2018-07-23 15:19:01,212 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:01,226 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:01,226 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-23 15:19:01,226 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 15:19:01,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 15:19:01,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-23 15:19:01,227 INFO L87 Difference]: Start difference. First operand 3901 states and 5762 transitions. Second operand 11 states. [2018-07-23 15:19:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:04,901 INFO L93 Difference]: Finished difference Result 4463 states and 6547 transitions. [2018-07-23 15:19:04,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-23 15:19:04,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-23 15:19:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:04,907 INFO L225 Difference]: With dead ends: 4463 [2018-07-23 15:19:04,907 INFO L226 Difference]: Without dead ends: 4461 [2018-07-23 15:19:04,908 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=321, Invalid=869, Unknown=0, NotChecked=0, Total=1190 [2018-07-23 15:19:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2018-07-23 15:19:07,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 3965. [2018-07-23 15:19:07,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3965 states. [2018-07-23 15:19:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5852 transitions. [2018-07-23 15:19:07,559 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5852 transitions. Word has length 29 [2018-07-23 15:19:07,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:07,559 INFO L471 AbstractCegarLoop]: Abstraction has 3965 states and 5852 transitions. [2018-07-23 15:19:07,559 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 15:19:07,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5852 transitions. [2018-07-23 15:19:07,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:19:07,562 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:07,562 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:19:07,562 INFO L414 AbstractCegarLoop]: === Iteration 97 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:19:07,562 INFO L82 PathProgramCache]: Analyzing trace with hash 570846522, now seen corresponding path program 1 times [2018-07-23 15:19:07,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:07,579 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:07,579 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:19:07,580 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 15:19:07,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 15:19:07,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-07-23 15:19:07,580 INFO L87 Difference]: Start difference. First operand 3965 states and 5852 transitions. Second operand 13 states. [2018-07-23 15:19:11,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:11,692 INFO L93 Difference]: Finished difference Result 5093 states and 7513 transitions. [2018-07-23 15:19:11,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 15:19:11,692 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2018-07-23 15:19:11,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:11,698 INFO L225 Difference]: With dead ends: 5093 [2018-07-23 15:19:11,698 INFO L226 Difference]: Without dead ends: 5091 [2018-07-23 15:19:11,699 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=246, Invalid=684, Unknown=0, NotChecked=0, Total=930 [2018-07-23 15:19:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2018-07-23 15:19:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 4401. [2018-07-23 15:19:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4401 states. [2018-07-23 15:19:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 6510 transitions. [2018-07-23 15:19:14,535 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 6510 transitions. Word has length 29 [2018-07-23 15:19:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:14,535 INFO L471 AbstractCegarLoop]: Abstraction has 4401 states and 6510 transitions. [2018-07-23 15:19:14,535 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 15:19:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 6510 transitions. [2018-07-23 15:19:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:19:14,539 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:14,540 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:19:14,540 INFO L414 AbstractCegarLoop]: === Iteration 98 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:19:14,540 INFO L82 PathProgramCache]: Analyzing trace with hash -540945094, now seen corresponding path program 2 times [2018-07-23 15:19:14,540 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:14,561 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:14,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:19:14,562 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:19:14,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:19:14,562 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:19:14,562 INFO L87 Difference]: Start difference. First operand 4401 states and 6510 transitions. Second operand 10 states. [2018-07-23 15:19:18,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:18,186 INFO L93 Difference]: Finished difference Result 4721 states and 6944 transitions. [2018-07-23 15:19:18,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 15:19:18,186 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-23 15:19:18,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:18,193 INFO L225 Difference]: With dead ends: 4721 [2018-07-23 15:19:18,193 INFO L226 Difference]: Without dead ends: 4719 [2018-07-23 15:19:18,195 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:19:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4719 states. [2018-07-23 15:19:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4719 to 4507. [2018-07-23 15:19:21,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4507 states. [2018-07-23 15:19:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4507 states to 4507 states and 6661 transitions. [2018-07-23 15:19:21,175 INFO L78 Accepts]: Start accepts. Automaton has 4507 states and 6661 transitions. Word has length 29 [2018-07-23 15:19:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:21,175 INFO L471 AbstractCegarLoop]: Abstraction has 4507 states and 6661 transitions. [2018-07-23 15:19:21,175 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:19:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4507 states and 6661 transitions. [2018-07-23 15:19:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:19:21,178 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:21,178 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:19:21,179 INFO L414 AbstractCegarLoop]: === Iteration 99 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:19:21,179 INFO L82 PathProgramCache]: Analyzing trace with hash 172278311, now seen corresponding path program 2 times [2018-07-23 15:19:21,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-23 15:19:21,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:21,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-23 15:19:21,191 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-23 15:19:21,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-23 15:19:21,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:19:21,192 INFO L87 Difference]: Start difference. First operand 4507 states and 6661 transitions. Second operand 9 states. [2018-07-23 15:19:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:24,475 INFO L93 Difference]: Finished difference Result 4725 states and 6951 transitions. [2018-07-23 15:19:24,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-23 15:19:24,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-07-23 15:19:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:24,482 INFO L225 Difference]: With dead ends: 4725 [2018-07-23 15:19:24,482 INFO L226 Difference]: Without dead ends: 4723 [2018-07-23 15:19:24,484 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2018-07-23 15:19:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2018-07-23 15:19:27,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4504. [2018-07-23 15:19:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4504 states. [2018-07-23 15:19:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 6658 transitions. [2018-07-23 15:19:27,500 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 6658 transitions. Word has length 29 [2018-07-23 15:19:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:27,500 INFO L471 AbstractCegarLoop]: Abstraction has 4504 states and 6658 transitions. [2018-07-23 15:19:27,500 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-23 15:19:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 6658 transitions. [2018-07-23 15:19:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:19:27,503 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:27,503 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:19:27,503 INFO L414 AbstractCegarLoop]: === Iteration 100 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:19:27,503 INFO L82 PathProgramCache]: Analyzing trace with hash -182803664, now seen corresponding path program 1 times [2018-07-23 15:19:27,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:27,516 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:27,516 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-23 15:19:27,516 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 15:19:27,516 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 15:19:27,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-23 15:19:27,517 INFO L87 Difference]: Start difference. First operand 4504 states and 6658 transitions. Second operand 10 states. [2018-07-23 15:19:30,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:30,878 INFO L93 Difference]: Finished difference Result 4778 states and 7053 transitions. [2018-07-23 15:19:30,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-23 15:19:30,879 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-23 15:19:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:30,886 INFO L225 Difference]: With dead ends: 4778 [2018-07-23 15:19:30,886 INFO L226 Difference]: Without dead ends: 4776 [2018-07-23 15:19:30,888 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2018-07-23 15:19:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2018-07-23 15:19:33,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 4516. [2018-07-23 15:19:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4516 states. [2018-07-23 15:19:33,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 6674 transitions. [2018-07-23 15:19:33,938 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 6674 transitions. Word has length 29 [2018-07-23 15:19:33,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:19:33,939 INFO L471 AbstractCegarLoop]: Abstraction has 4516 states and 6674 transitions. [2018-07-23 15:19:33,939 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 15:19:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 6674 transitions. [2018-07-23 15:19:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-23 15:19:33,942 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:19:33,942 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 15:19:33,942 INFO L414 AbstractCegarLoop]: === Iteration 101 === [l1l0Err0AssertViolationASSERT, l0l1Err0AssertViolationASSERT, l1l1Err0AssertViolationASSERT, l1l1Err1AssertViolationASSERT]=== [2018-07-23 15:19:33,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1089104597, now seen corresponding path program 3 times [2018-07-23 15:19:33,942 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:19:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 15:19:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 15:19:33,966 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 15:19:33,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-23 15:19:33,966 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 15:19:33,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 15:19:33,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-23 15:19:33,967 INFO L87 Difference]: Start difference. First operand 4516 states and 6674 transitions. Second operand 12 states. [2018-07-23 15:19:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:19:37,430 INFO L93 Difference]: Finished difference Result 4905 states and 7210 transitions. [2018-07-23 15:19:37,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-23 15:19:37,431 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-23 15:19:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:19:37,437 INFO L225 Difference]: With dead ends: 4905 [2018-07-23 15:19:37,437 INFO L226 Difference]: Without dead ends: 4903 [2018-07-23 15:19:37,439 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2018-07-23 15:19:37,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. Received shutdown request... [2018-07-23 15:19:40,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4651. [2018-07-23 15:19:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2018-07-23 15:19:40,554 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 15:19:40,560 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 15:19:40,560 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:19:40 BoogieIcfgContainer [2018-07-23 15:19:40,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:19:40,561 INFO L168 Benchmark]: Toolchain (without parser) took 254429.86 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 362.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-23 15:19:40,563 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 15:19:40,564 INFO L168 Benchmark]: Boogie Preprocessor took 50.10 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 15:19:40,564 INFO L168 Benchmark]: RCFGBuilder took 250.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 15:19:40,567 INFO L168 Benchmark]: TraceAbstraction took 254124.57 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 351.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-23 15:19:40,569 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 50.10 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 250.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254124.57 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 351.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 66). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 99). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 112). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 121). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 4 error locations. TIMEOUT Result, 254.0s OverallTime, 101 OverallIterations, 3 TraceHistogramMax, 141.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6441 SDtfs, 12235 SDslu, 9630 SDs, 0 SdLazy, 42116 SolverSat, 11077 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2496 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 1959 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8657 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4516occurred in iteration=100, 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: 109.3s AutomataMinimizationTime, 101 MinimizatonAttempts, 23576 StatesRemovedByMinimization, 98 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2161 NumberOfCodeBlocks, 2161 NumberOfCodeBlocksAsserted, 101 NumberOfCheckSat, 2060 ConstructedInterpolants, 0 QuantifiedInterpolants, 202234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 101 InterpolantComputations, 5 PerfectInterpolantSequences, 72/792 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_product_WithProcedures.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-19-40-581.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product_WithProcedures.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-19-40-581.csv Completed graceful shutdown