java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:15:59,679 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:15:59,681 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:15:59,697 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:15:59,698 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:15:59,699 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:15:59,700 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:15:59,702 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:15:59,704 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:15:59,705 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:15:59,706 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:15:59,706 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:15:59,707 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:15:59,708 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:15:59,711 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:15:59,712 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:15:59,713 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:15:59,720 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:15:59,726 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:15:59,730 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:15:59,732 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:15:59,735 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:15:59,737 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:15:59,738 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:15:59,738 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:15:59,739 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:15:59,742 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:15:59,743 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:15:59,744 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:15:59,747 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:15:59,748 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:15:59,748 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:15:59,752 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:15:59,770 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:15:59,770 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:15:59,772 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:15:59,773 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:15:59,773 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:15:59,773 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:15:59,773 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:15:59,773 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:15:59,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:15:59,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:15:59,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:15:59,856 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:15:59,857 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:15:59,857 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl [2018-07-25 13:15:59,858 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl' [2018-07-25 13:15:59,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:15:59,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:15:59,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:15:59,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:15:59,912 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:15:59,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/1) ... [2018-07-25 13:15:59,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/1) ... [2018-07-25 13:15:59,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:15:59,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:15:59,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:15:59,954 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:15:59,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/1) ... [2018-07-25 13:15:59,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/1) ... [2018-07-25 13:15:59,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/1) ... [2018-07-25 13:15:59,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/1) ... [2018-07-25 13:15:59,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/1) ... [2018-07-25 13:15:59,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/1) ... [2018-07-25 13:15:59,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/1) ... [2018-07-25 13:15:59,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:15:59,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:15:59,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:15:59,977 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:15:59,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/1) ... [2018-07-25 13:16:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure l1l0 [2018-07-25 13:16:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure l1l0 [2018-07-25 13:16:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure l0l1 [2018-07-25 13:16:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure l0l1 [2018-07-25 13:16:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure l0l0 [2018-07-25 13:16:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure l0l0 [2018-07-25 13:16:00,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:16:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:16:00,060 INFO L130 BoogieDeclarations]: Found specification of procedure l1l1 [2018-07-25 13:16:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure l1l1 [2018-07-25 13:16:00,252 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:16:00,253 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:16:00 BoogieIcfgContainer [2018-07-25 13:16:00,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:16:00,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:16:00,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:16:00,258 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:16:00,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:15:59" (1/2) ... [2018-07-25 13:16:00,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2630ac2b and model type threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:16:00, skipping insertion in model container [2018-07-25 13:16:00,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:16:00" (2/2) ... [2018-07-25 13:16:00,263 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product_WithProcedures.bpl [2018-07-25 13:16:00,274 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:16:00,283 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-07-25 13:16:00,334 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:16:00,335 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:16:00,335 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:16:00,335 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:16:00,335 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:16:00,336 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:16:00,336 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:16:00,336 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:16:00,336 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:16:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-07-25 13:16:00,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:16:00,368 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:00,369 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:00,370 INFO L415 AbstractCegarLoop]: === Iteration 1 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:00,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1282157605, now seen corresponding path program 1 times [2018-07-25 13:16:00,384 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:00,556 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:16:00,556 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 13:16:00,561 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:16:00,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:16:00,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:16:00,576 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2018-07-25 13:16:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:00,819 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2018-07-25 13:16:00,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:16:00,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-25 13:16:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:00,850 INFO L225 Difference]: With dead ends: 72 [2018-07-25 13:16:00,852 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 13:16:00,856 INFO L574 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 [2018-07-25 13:16:00,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 13:16:00,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2018-07-25 13:16:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 13:16:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2018-07-25 13:16:00,926 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 7 [2018-07-25 13:16:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:00,927 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2018-07-25 13:16:00,927 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:16:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2018-07-25 13:16:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:16:00,928 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:00,929 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:00,929 INFO L415 AbstractCegarLoop]: === Iteration 2 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:00,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1272619553, now seen corresponding path program 1 times [2018-07-25 13:16:00,930 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:00,991 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:16:00,992 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 13:16:00,994 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:16:00,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:16:00,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:16:00,995 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2018-07-25 13:16:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:01,218 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2018-07-25 13:16:01,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:16:01,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-25 13:16:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:01,220 INFO L225 Difference]: With dead ends: 81 [2018-07-25 13:16:01,221 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 13:16:01,225 INFO L574 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 [2018-07-25 13:16:01,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 13:16:01,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 57. [2018-07-25 13:16:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 13:16:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2018-07-25 13:16:01,251 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 7 [2018-07-25 13:16:01,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:01,251 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2018-07-25 13:16:01,251 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:16:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2018-07-25 13:16:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:16:01,254 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:01,255 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:01,255 INFO L415 AbstractCegarLoop]: === Iteration 3 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:01,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1601446133, now seen corresponding path program 1 times [2018-07-25 13:16:01,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:01,321 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:16:01,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 13:16:01,321 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:16:01,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:16:01,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:16:01,322 INFO L87 Difference]: Start difference. First operand 57 states and 78 transitions. Second operand 7 states. [2018-07-25 13:16:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:01,595 INFO L93 Difference]: Finished difference Result 122 states and 175 transitions. [2018-07-25 13:16:01,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:16:01,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-25 13:16:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:01,601 INFO L225 Difference]: With dead ends: 122 [2018-07-25 13:16:01,601 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 13:16:01,604 INFO L574 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 [2018-07-25 13:16:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 13:16:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 73. [2018-07-25 13:16:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 13:16:01,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2018-07-25 13:16:01,642 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 103 transitions. Word has length 10 [2018-07-25 13:16:01,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:01,642 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 103 transitions. [2018-07-25 13:16:01,642 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:16:01,643 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 103 transitions. [2018-07-25 13:16:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:16:01,644 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:01,644 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:01,645 INFO L415 AbstractCegarLoop]: === Iteration 4 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1152651256, now seen corresponding path program 1 times [2018-07-25 13:16:01,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:01,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:01,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:16:01,706 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:16:01,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:16:01,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:16:01,707 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. Second operand 7 states. [2018-07-25 13:16:01,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:01,926 INFO L93 Difference]: Finished difference Result 143 states and 208 transitions. [2018-07-25 13:16:01,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:16:01,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-25 13:16:01,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:01,929 INFO L225 Difference]: With dead ends: 143 [2018-07-25 13:16:01,929 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 13:16:01,930 INFO L574 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 [2018-07-25 13:16:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 13:16:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 85. [2018-07-25 13:16:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 13:16:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 122 transitions. [2018-07-25 13:16:01,973 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 122 transitions. Word has length 10 [2018-07-25 13:16:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:01,975 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 122 transitions. [2018-07-25 13:16:01,975 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:16:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 122 transitions. [2018-07-25 13:16:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 13:16:01,981 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:01,982 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:01,982 INFO L415 AbstractCegarLoop]: === Iteration 5 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:01,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1536370777, now seen corresponding path program 1 times [2018-07-25 13:16:01,983 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:02,029 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:02,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:16:02,030 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:16:02,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:16:02,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:16:02,031 INFO L87 Difference]: Start difference. First operand 85 states and 122 transitions. Second operand 6 states. [2018-07-25 13:16:02,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:02,185 INFO L93 Difference]: Finished difference Result 152 states and 223 transitions. [2018-07-25 13:16:02,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:16:02,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-07-25 13:16:02,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:02,188 INFO L225 Difference]: With dead ends: 152 [2018-07-25 13:16:02,188 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 13:16:02,189 INFO L574 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 [2018-07-25 13:16:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 13:16:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 96. [2018-07-25 13:16:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 13:16:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2018-07-25 13:16:02,221 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 138 transitions. Word has length 11 [2018-07-25 13:16:02,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:02,221 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 138 transitions. [2018-07-25 13:16:02,222 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:16:02,222 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 138 transitions. [2018-07-25 13:16:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 13:16:02,223 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:02,224 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:02,224 INFO L415 AbstractCegarLoop]: === Iteration 6 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:02,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1150793287, now seen corresponding path program 1 times [2018-07-25 13:16:02,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:02,248 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:02,248 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:16:02,248 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:16:02,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:16:02,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:16:02,249 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. Second operand 6 states. [2018-07-25 13:16:02,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:02,367 INFO L93 Difference]: Finished difference Result 167 states and 245 transitions. [2018-07-25 13:16:02,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:16:02,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-07-25 13:16:02,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:02,369 INFO L225 Difference]: With dead ends: 167 [2018-07-25 13:16:02,370 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 13:16:02,370 INFO L574 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 [2018-07-25 13:16:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 13:16:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 106. [2018-07-25 13:16:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 13:16:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 152 transitions. [2018-07-25 13:16:02,408 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 152 transitions. Word has length 11 [2018-07-25 13:16:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:02,408 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 152 transitions. [2018-07-25 13:16:02,412 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:16:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 152 transitions. [2018-07-25 13:16:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 13:16:02,414 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:02,414 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:02,415 INFO L415 AbstractCegarLoop]: === Iteration 7 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:02,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1829652612, now seen corresponding path program 1 times [2018-07-25 13:16:02,415 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:02,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:02,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:16:02,475 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:16:02,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:16:02,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:16:02,476 INFO L87 Difference]: Start difference. First operand 106 states and 152 transitions. Second operand 7 states. [2018-07-25 13:16:02,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:02,730 INFO L93 Difference]: Finished difference Result 241 states and 352 transitions. [2018-07-25 13:16:02,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:16:02,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-07-25 13:16:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:02,733 INFO L225 Difference]: With dead ends: 241 [2018-07-25 13:16:02,734 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 13:16:02,735 INFO L574 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 [2018-07-25 13:16:02,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 13:16:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 151. [2018-07-25 13:16:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 13:16:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 221 transitions. [2018-07-25 13:16:02,777 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 221 transitions. Word has length 13 [2018-07-25 13:16:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:02,778 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 221 transitions. [2018-07-25 13:16:02,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:16:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 221 transitions. [2018-07-25 13:16:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 13:16:02,780 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:02,780 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:02,781 INFO L415 AbstractCegarLoop]: === Iteration 8 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:02,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1159232837, now seen corresponding path program 2 times [2018-07-25 13:16:02,781 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:02,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:02,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:02,823 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:02,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:02,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:02,824 INFO L87 Difference]: Start difference. First operand 151 states and 221 transitions. Second operand 8 states. [2018-07-25 13:16:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:03,124 INFO L93 Difference]: Finished difference Result 285 states and 419 transitions. [2018-07-25 13:16:03,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:16:03,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-07-25 13:16:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:03,127 INFO L225 Difference]: With dead ends: 285 [2018-07-25 13:16:03,127 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 13:16:03,129 INFO L574 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 [2018-07-25 13:16:03,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 13:16:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 198. [2018-07-25 13:16:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 13:16:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 292 transitions. [2018-07-25 13:16:03,199 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 292 transitions. Word has length 13 [2018-07-25 13:16:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:03,200 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 292 transitions. [2018-07-25 13:16:03,200 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 292 transitions. [2018-07-25 13:16:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:03,201 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:03,202 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:03,202 INFO L415 AbstractCegarLoop]: === Iteration 9 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:03,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1433054771, now seen corresponding path program 1 times [2018-07-25 13:16:03,203 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:03,229 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:03,230 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:16:03,230 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:16:03,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:16:03,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:16:03,231 INFO L87 Difference]: Start difference. First operand 198 states and 292 transitions. Second operand 7 states. [2018-07-25 13:16:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:03,486 INFO L93 Difference]: Finished difference Result 374 states and 561 transitions. [2018-07-25 13:16:03,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:16:03,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-07-25 13:16:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:03,491 INFO L225 Difference]: With dead ends: 374 [2018-07-25 13:16:03,492 INFO L226 Difference]: Without dead ends: 372 [2018-07-25 13:16:03,493 INFO L574 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 [2018-07-25 13:16:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-25 13:16:03,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 242. [2018-07-25 13:16:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 13:16:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 361 transitions. [2018-07-25 13:16:03,569 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 361 transitions. Word has length 14 [2018-07-25 13:16:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:03,570 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 361 transitions. [2018-07-25 13:16:03,570 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:16:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 361 transitions. [2018-07-25 13:16:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:03,573 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:03,574 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:03,574 INFO L415 AbstractCegarLoop]: === Iteration 10 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:03,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1436992942, now seen corresponding path program 1 times [2018-07-25 13:16:03,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:03,618 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:03,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:03,619 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:03,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:03,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:03,620 INFO L87 Difference]: Start difference. First operand 242 states and 361 transitions. Second operand 8 states. [2018-07-25 13:16:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:03,909 INFO L93 Difference]: Finished difference Result 367 states and 555 transitions. [2018-07-25 13:16:03,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:16:03,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 13:16:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:03,913 INFO L225 Difference]: With dead ends: 367 [2018-07-25 13:16:03,913 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 13:16:03,916 INFO L574 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 [2018-07-25 13:16:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 13:16:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 242. [2018-07-25 13:16:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 13:16:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 361 transitions. [2018-07-25 13:16:03,993 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 361 transitions. Word has length 14 [2018-07-25 13:16:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:03,993 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 361 transitions. [2018-07-25 13:16:03,994 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 361 transitions. [2018-07-25 13:16:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:03,995 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:03,996 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:03,996 INFO L415 AbstractCegarLoop]: === Iteration 11 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:03,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1436993326, now seen corresponding path program 1 times [2018-07-25 13:16:03,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:04,029 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:04,029 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:04,030 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:04,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:04,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:04,031 INFO L87 Difference]: Start difference. First operand 242 states and 361 transitions. Second operand 8 states. [2018-07-25 13:16:04,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:04,329 INFO L93 Difference]: Finished difference Result 408 states and 613 transitions. [2018-07-25 13:16:04,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:04,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 13:16:04,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:04,333 INFO L225 Difference]: With dead ends: 408 [2018-07-25 13:16:04,333 INFO L226 Difference]: Without dead ends: 406 [2018-07-25 13:16:04,334 INFO L574 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 [2018-07-25 13:16:04,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-25 13:16:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 274. [2018-07-25 13:16:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-25 13:16:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 411 transitions. [2018-07-25 13:16:04,431 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 411 transitions. Word has length 14 [2018-07-25 13:16:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:04,432 INFO L472 AbstractCegarLoop]: Abstraction has 274 states and 411 transitions. [2018-07-25 13:16:04,432 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 411 transitions. [2018-07-25 13:16:04,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:04,435 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:04,435 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:04,436 INFO L415 AbstractCegarLoop]: === Iteration 12 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:04,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1791986342, now seen corresponding path program 1 times [2018-07-25 13:16:04,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:04,467 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:04,467 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:04,467 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:04,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:04,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:04,468 INFO L87 Difference]: Start difference. First operand 274 states and 411 transitions. Second operand 8 states. [2018-07-25 13:16:04,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:04,768 INFO L93 Difference]: Finished difference Result 429 states and 646 transitions. [2018-07-25 13:16:04,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:04,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 13:16:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:04,772 INFO L225 Difference]: With dead ends: 429 [2018-07-25 13:16:04,772 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 13:16:04,773 INFO L574 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 [2018-07-25 13:16:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 13:16:04,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 287. [2018-07-25 13:16:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 13:16:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 429 transitions. [2018-07-25 13:16:04,905 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 429 transitions. Word has length 14 [2018-07-25 13:16:04,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:04,906 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 429 transitions. [2018-07-25 13:16:04,906 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 429 transitions. [2018-07-25 13:16:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:04,908 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:04,908 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:04,908 INFO L415 AbstractCegarLoop]: === Iteration 13 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:04,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1412559370, now seen corresponding path program 1 times [2018-07-25 13:16:04,909 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-25 13:16:04,922 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:16:04,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:16:04,923 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:16:04,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:16:04,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:16:04,924 INFO L87 Difference]: Start difference. First operand 287 states and 429 transitions. Second operand 4 states. [2018-07-25 13:16:05,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:05,014 INFO L93 Difference]: Finished difference Result 428 states and 641 transitions. [2018-07-25 13:16:05,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:16:05,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-07-25 13:16:05,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:05,017 INFO L225 Difference]: With dead ends: 428 [2018-07-25 13:16:05,017 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 13:16:05,024 INFO L574 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 [2018-07-25 13:16:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 13:16:05,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 13:16:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 13:16:05,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 399 transitions. [2018-07-25 13:16:05,108 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 399 transitions. Word has length 14 [2018-07-25 13:16:05,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:05,109 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 399 transitions. [2018-07-25 13:16:05,109 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:16:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 399 transitions. [2018-07-25 13:16:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:05,112 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:05,112 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:05,113 INFO L415 AbstractCegarLoop]: === Iteration 14 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:05,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1697430606, now seen corresponding path program 1 times [2018-07-25 13:16:05,113 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-25 13:16:05,138 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:16:05,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:16:05,139 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:16:05,139 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:16:05,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:16:05,139 INFO L87 Difference]: Start difference. First operand 273 states and 399 transitions. Second operand 4 states. [2018-07-25 13:16:05,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:05,216 INFO L93 Difference]: Finished difference Result 399 states and 584 transitions. [2018-07-25 13:16:05,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:16:05,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-07-25 13:16:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:05,222 INFO L225 Difference]: With dead ends: 399 [2018-07-25 13:16:05,222 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 13:16:05,224 INFO L574 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 [2018-07-25 13:16:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 13:16:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 13:16:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 13:16:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 316 transitions. [2018-07-25 13:16:05,289 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 316 transitions. Word has length 14 [2018-07-25 13:16:05,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:05,289 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 316 transitions. [2018-07-25 13:16:05,290 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:16:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 316 transitions. [2018-07-25 13:16:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:05,291 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:05,291 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:05,292 INFO L415 AbstractCegarLoop]: === Iteration 15 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:05,292 INFO L82 PathProgramCache]: Analyzing trace with hash 844488035, now seen corresponding path program 1 times [2018-07-25 13:16:05,292 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:05,318 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:05,318 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:16:05,318 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:16:05,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:16:05,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:16:05,319 INFO L87 Difference]: Start difference. First operand 225 states and 316 transitions. Second operand 7 states. [2018-07-25 13:16:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:05,484 INFO L93 Difference]: Finished difference Result 297 states and 415 transitions. [2018-07-25 13:16:05,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:16:05,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-07-25 13:16:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:05,487 INFO L225 Difference]: With dead ends: 297 [2018-07-25 13:16:05,487 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 13:16:05,487 INFO L574 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 [2018-07-25 13:16:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 13:16:05,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 262. [2018-07-25 13:16:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-25 13:16:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 371 transitions. [2018-07-25 13:16:05,567 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 371 transitions. Word has length 14 [2018-07-25 13:16:05,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:05,567 INFO L472 AbstractCegarLoop]: Abstraction has 262 states and 371 transitions. [2018-07-25 13:16:05,567 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:16:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 371 transitions. [2018-07-25 13:16:05,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:05,568 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:05,569 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:05,569 INFO L415 AbstractCegarLoop]: === Iteration 16 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:05,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1052420626, now seen corresponding path program 1 times [2018-07-25 13:16:05,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:05,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:05,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:05,595 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:05,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:05,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:05,596 INFO L87 Difference]: Start difference. First operand 262 states and 371 transitions. Second operand 8 states. [2018-07-25 13:16:05,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:05,775 INFO L93 Difference]: Finished difference Result 326 states and 461 transitions. [2018-07-25 13:16:05,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:05,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 13:16:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:05,778 INFO L225 Difference]: With dead ends: 326 [2018-07-25 13:16:05,778 INFO L226 Difference]: Without dead ends: 324 [2018-07-25 13:16:05,779 INFO L574 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 [2018-07-25 13:16:05,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-25 13:16:05,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 301. [2018-07-25 13:16:05,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 13:16:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2018-07-25 13:16:05,865 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 14 [2018-07-25 13:16:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:05,866 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2018-07-25 13:16:05,866 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:05,866 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2018-07-25 13:16:05,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:05,867 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:05,867 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:05,868 INFO L415 AbstractCegarLoop]: === Iteration 17 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:05,869 INFO L82 PathProgramCache]: Analyzing trace with hash 697427610, now seen corresponding path program 1 times [2018-07-25 13:16:05,869 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:05,898 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:05,898 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:05,898 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:05,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:05,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:05,899 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand 8 states. [2018-07-25 13:16:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:06,075 INFO L93 Difference]: Finished difference Result 319 states and 447 transitions. [2018-07-25 13:16:06,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:06,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 13:16:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:06,078 INFO L225 Difference]: With dead ends: 319 [2018-07-25 13:16:06,078 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 13:16:06,079 INFO L574 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 [2018-07-25 13:16:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 13:16:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303. [2018-07-25 13:16:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 13:16:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 431 transitions. [2018-07-25 13:16:06,168 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 431 transitions. Word has length 14 [2018-07-25 13:16:06,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:06,168 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 431 transitions. [2018-07-25 13:16:06,168 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 431 transitions. [2018-07-25 13:16:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:16:06,169 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:06,169 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:06,170 INFO L415 AbstractCegarLoop]: === Iteration 18 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:06,170 INFO L82 PathProgramCache]: Analyzing trace with hash 697427226, now seen corresponding path program 1 times [2018-07-25 13:16:06,171 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:06,217 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:06,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:06,218 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:06,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:06,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:06,219 INFO L87 Difference]: Start difference. First operand 303 states and 431 transitions. Second operand 8 states. [2018-07-25 13:16:06,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:06,462 INFO L93 Difference]: Finished difference Result 335 states and 474 transitions. [2018-07-25 13:16:06,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:16:06,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 13:16:06,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:06,465 INFO L225 Difference]: With dead ends: 335 [2018-07-25 13:16:06,465 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 13:16:06,466 INFO L574 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 [2018-07-25 13:16:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 13:16:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 322. [2018-07-25 13:16:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-25 13:16:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 456 transitions. [2018-07-25 13:16:06,570 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 456 transitions. Word has length 14 [2018-07-25 13:16:06,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:06,570 INFO L472 AbstractCegarLoop]: Abstraction has 322 states and 456 transitions. [2018-07-25 13:16:06,570 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:06,570 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 456 transitions. [2018-07-25 13:16:06,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 13:16:06,571 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:06,572 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:06,572 INFO L415 AbstractCegarLoop]: === Iteration 19 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:06,572 INFO L82 PathProgramCache]: Analyzing trace with hash 406900684, now seen corresponding path program 1 times [2018-07-25 13:16:06,572 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:06,608 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:06,608 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:06,608 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:16:06,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:16:06,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:16:06,609 INFO L87 Difference]: Start difference. First operand 322 states and 456 transitions. Second operand 10 states. [2018-07-25 13:16:06,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:06,983 INFO L93 Difference]: Finished difference Result 482 states and 683 transitions. [2018-07-25 13:16:06,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:16:06,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-25 13:16:06,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:06,987 INFO L225 Difference]: With dead ends: 482 [2018-07-25 13:16:06,987 INFO L226 Difference]: Without dead ends: 480 [2018-07-25 13:16:06,989 INFO L574 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 [2018-07-25 13:16:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-07-25 13:16:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 331. [2018-07-25 13:16:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 13:16:07,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 470 transitions. [2018-07-25 13:16:07,112 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 470 transitions. Word has length 17 [2018-07-25 13:16:07,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:07,112 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 470 transitions. [2018-07-25 13:16:07,112 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:16:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 470 transitions. [2018-07-25 13:16:07,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 13:16:07,114 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:07,114 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:07,114 INFO L415 AbstractCegarLoop]: === Iteration 20 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:07,114 INFO L82 PathProgramCache]: Analyzing trace with hash 2143481530, now seen corresponding path program 1 times [2018-07-25 13:16:07,114 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:07,151 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:07,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:07,151 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:16:07,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:16:07,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:16:07,152 INFO L87 Difference]: Start difference. First operand 331 states and 470 transitions. Second operand 10 states. [2018-07-25 13:16:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:07,618 INFO L93 Difference]: Finished difference Result 507 states and 718 transitions. [2018-07-25 13:16:07,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:16:07,619 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-25 13:16:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:07,625 INFO L225 Difference]: With dead ends: 507 [2018-07-25 13:16:07,625 INFO L226 Difference]: Without dead ends: 505 [2018-07-25 13:16:07,626 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=242, Invalid=570, Unknown=0, NotChecked=0, Total=812 [2018-07-25 13:16:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-07-25 13:16:07,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 286. [2018-07-25 13:16:07,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-25 13:16:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 400 transitions. [2018-07-25 13:16:07,834 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 400 transitions. Word has length 17 [2018-07-25 13:16:07,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:07,834 INFO L472 AbstractCegarLoop]: Abstraction has 286 states and 400 transitions. [2018-07-25 13:16:07,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:16:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 400 transitions. [2018-07-25 13:16:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:07,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:07,836 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:07,836 INFO L415 AbstractCegarLoop]: === Iteration 21 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:07,837 INFO L82 PathProgramCache]: Analyzing trace with hash -649882737, now seen corresponding path program 2 times [2018-07-25 13:16:07,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:07,861 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:07,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:07,862 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:07,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:07,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:07,863 INFO L87 Difference]: Start difference. First operand 286 states and 400 transitions. Second operand 8 states. [2018-07-25 13:16:08,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:08,209 INFO L93 Difference]: Finished difference Result 487 states and 698 transitions. [2018-07-25 13:16:08,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:16:08,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:08,213 INFO L225 Difference]: With dead ends: 487 [2018-07-25 13:16:08,213 INFO L226 Difference]: Without dead ends: 485 [2018-07-25 13:16:08,214 INFO L574 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 [2018-07-25 13:16:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2018-07-25 13:16:08,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 437. [2018-07-25 13:16:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 13:16:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 636 transitions. [2018-07-25 13:16:08,416 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 636 transitions. Word has length 18 [2018-07-25 13:16:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:08,416 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 636 transitions. [2018-07-25 13:16:08,416 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 636 transitions. [2018-07-25 13:16:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:08,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:08,418 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:08,418 INFO L415 AbstractCegarLoop]: === Iteration 22 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:08,418 INFO L82 PathProgramCache]: Analyzing trace with hash -653820908, now seen corresponding path program 1 times [2018-07-25 13:16:08,418 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:08,442 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:08,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:08,442 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:08,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:08,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:08,443 INFO L87 Difference]: Start difference. First operand 437 states and 636 transitions. Second operand 8 states. [2018-07-25 13:16:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:08,837 INFO L93 Difference]: Finished difference Result 500 states and 719 transitions. [2018-07-25 13:16:08,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:16:08,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:08,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:08,841 INFO L225 Difference]: With dead ends: 500 [2018-07-25 13:16:08,841 INFO L226 Difference]: Without dead ends: 498 [2018-07-25 13:16:08,842 INFO L574 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 [2018-07-25 13:16:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2018-07-25 13:16:09,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 421. [2018-07-25 13:16:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 13:16:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 615 transitions. [2018-07-25 13:16:09,053 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 615 transitions. Word has length 18 [2018-07-25 13:16:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:09,053 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 615 transitions. [2018-07-25 13:16:09,054 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:09,054 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 615 transitions. [2018-07-25 13:16:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:09,055 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:09,055 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:09,055 INFO L415 AbstractCegarLoop]: === Iteration 23 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash -653821292, now seen corresponding path program 1 times [2018-07-25 13:16:09,056 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:09,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:09,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:09,085 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:09,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:09,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:09,086 INFO L87 Difference]: Start difference. First operand 421 states and 615 transitions. Second operand 8 states. [2018-07-25 13:16:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:09,461 INFO L93 Difference]: Finished difference Result 535 states and 771 transitions. [2018-07-25 13:16:09,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:16:09,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:09,465 INFO L225 Difference]: With dead ends: 535 [2018-07-25 13:16:09,465 INFO L226 Difference]: Without dead ends: 533 [2018-07-25 13:16:09,466 INFO L574 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 [2018-07-25 13:16:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2018-07-25 13:16:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 447. [2018-07-25 13:16:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-07-25 13:16:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 651 transitions. [2018-07-25 13:16:09,680 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 651 transitions. Word has length 18 [2018-07-25 13:16:09,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:09,680 INFO L472 AbstractCegarLoop]: Abstraction has 447 states and 651 transitions. [2018-07-25 13:16:09,680 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 651 transitions. [2018-07-25 13:16:09,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:09,681 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:09,682 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:09,682 INFO L415 AbstractCegarLoop]: === Iteration 24 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:09,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1008814308, now seen corresponding path program 1 times [2018-07-25 13:16:09,682 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:09,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:09,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:09,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:09,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:09,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:09,707 INFO L87 Difference]: Start difference. First operand 447 states and 651 transitions. Second operand 8 states. [2018-07-25 13:16:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:10,127 INFO L93 Difference]: Finished difference Result 557 states and 803 transitions. [2018-07-25 13:16:10,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:16:10,128 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:10,131 INFO L225 Difference]: With dead ends: 557 [2018-07-25 13:16:10,132 INFO L226 Difference]: Without dead ends: 555 [2018-07-25 13:16:10,133 INFO L574 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 [2018-07-25 13:16:10,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2018-07-25 13:16:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 462. [2018-07-25 13:16:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2018-07-25 13:16:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 674 transitions. [2018-07-25 13:16:10,429 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 674 transitions. Word has length 18 [2018-07-25 13:16:10,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:10,429 INFO L472 AbstractCegarLoop]: Abstraction has 462 states and 674 transitions. [2018-07-25 13:16:10,429 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:10,429 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 674 transitions. [2018-07-25 13:16:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:10,431 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:10,431 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:10,431 INFO L415 AbstractCegarLoop]: === Iteration 25 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:10,431 INFO L82 PathProgramCache]: Analyzing trace with hash 199858329, now seen corresponding path program 2 times [2018-07-25 13:16:10,432 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:10,459 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:10,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:10,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:10,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:10,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:10,461 INFO L87 Difference]: Start difference. First operand 462 states and 674 transitions. Second operand 9 states. [2018-07-25 13:16:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:10,936 INFO L93 Difference]: Finished difference Result 562 states and 811 transitions. [2018-07-25 13:16:10,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:16:10,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 13:16:10,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:10,940 INFO L225 Difference]: With dead ends: 562 [2018-07-25 13:16:10,940 INFO L226 Difference]: Without dead ends: 560 [2018-07-25 13:16:10,941 INFO L574 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 [2018-07-25 13:16:10,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2018-07-25 13:16:11,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 495. [2018-07-25 13:16:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-07-25 13:16:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 721 transitions. [2018-07-25 13:16:11,233 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 721 transitions. Word has length 18 [2018-07-25 13:16:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:11,234 INFO L472 AbstractCegarLoop]: Abstraction has 495 states and 721 transitions. [2018-07-25 13:16:11,234 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 721 transitions. [2018-07-25 13:16:11,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:11,235 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:11,235 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:11,236 INFO L415 AbstractCegarLoop]: === Iteration 26 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:11,236 INFO L82 PathProgramCache]: Analyzing trace with hash -155134687, now seen corresponding path program 1 times [2018-07-25 13:16:11,236 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:11,262 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:11,262 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:11,263 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:11,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:11,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:11,263 INFO L87 Difference]: Start difference. First operand 495 states and 721 transitions. Second operand 8 states. [2018-07-25 13:16:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:11,670 INFO L93 Difference]: Finished difference Result 542 states and 779 transitions. [2018-07-25 13:16:11,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:11,671 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:11,674 INFO L225 Difference]: With dead ends: 542 [2018-07-25 13:16:11,674 INFO L226 Difference]: Without dead ends: 540 [2018-07-25 13:16:11,675 INFO L574 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 [2018-07-25 13:16:11,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2018-07-25 13:16:11,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 508. [2018-07-25 13:16:11,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-07-25 13:16:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 738 transitions. [2018-07-25 13:16:11,949 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 738 transitions. Word has length 18 [2018-07-25 13:16:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:11,950 INFO L472 AbstractCegarLoop]: Abstraction has 508 states and 738 transitions. [2018-07-25 13:16:11,950 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 738 transitions. [2018-07-25 13:16:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:11,951 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:11,951 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:11,951 INFO L415 AbstractCegarLoop]: === Iteration 27 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:11,952 INFO L82 PathProgramCache]: Analyzing trace with hash -155135071, now seen corresponding path program 1 times [2018-07-25 13:16:11,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:11,981 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:11,981 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:11,981 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:11,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:11,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:11,982 INFO L87 Difference]: Start difference. First operand 508 states and 738 transitions. Second operand 8 states. [2018-07-25 13:16:12,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:12,573 INFO L93 Difference]: Finished difference Result 840 states and 1224 transitions. [2018-07-25 13:16:12,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:16:12,573 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:12,579 INFO L225 Difference]: With dead ends: 840 [2018-07-25 13:16:12,579 INFO L226 Difference]: Without dead ends: 838 [2018-07-25 13:16:12,580 INFO L574 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 [2018-07-25 13:16:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2018-07-25 13:16:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 672. [2018-07-25 13:16:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2018-07-25 13:16:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 988 transitions. [2018-07-25 13:16:12,939 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 988 transitions. Word has length 18 [2018-07-25 13:16:12,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:12,939 INFO L472 AbstractCegarLoop]: Abstraction has 672 states and 988 transitions. [2018-07-25 13:16:12,939 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 988 transitions. [2018-07-25 13:16:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:12,945 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:12,945 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:12,946 INFO L415 AbstractCegarLoop]: === Iteration 28 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:12,946 INFO L82 PathProgramCache]: Analyzing trace with hash -216264415, now seen corresponding path program 2 times [2018-07-25 13:16:12,946 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:12,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:12,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:12,974 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:12,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:12,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:12,976 INFO L87 Difference]: Start difference. First operand 672 states and 988 transitions. Second operand 8 states. [2018-07-25 13:16:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:13,473 INFO L93 Difference]: Finished difference Result 733 states and 1065 transitions. [2018-07-25 13:16:13,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:13,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:13,478 INFO L225 Difference]: With dead ends: 733 [2018-07-25 13:16:13,478 INFO L226 Difference]: Without dead ends: 731 [2018-07-25 13:16:13,479 INFO L574 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 [2018-07-25 13:16:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2018-07-25 13:16:13,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 646. [2018-07-25 13:16:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2018-07-25 13:16:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 944 transitions. [2018-07-25 13:16:13,802 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 944 transitions. Word has length 18 [2018-07-25 13:16:13,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:13,802 INFO L472 AbstractCegarLoop]: Abstraction has 646 states and 944 transitions. [2018-07-25 13:16:13,802 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:13,803 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 944 transitions. [2018-07-25 13:16:13,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:13,804 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:13,804 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:13,804 INFO L415 AbstractCegarLoop]: === Iteration 29 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:13,805 INFO L82 PathProgramCache]: Analyzing trace with hash -216264799, now seen corresponding path program 2 times [2018-07-25 13:16:13,805 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:13,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:13,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:13,829 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:13,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:13,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:13,830 INFO L87 Difference]: Start difference. First operand 646 states and 944 transitions. Second operand 8 states. [2018-07-25 13:16:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:14,481 INFO L93 Difference]: Finished difference Result 780 states and 1131 transitions. [2018-07-25 13:16:14,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:16:14,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:14,486 INFO L225 Difference]: With dead ends: 780 [2018-07-25 13:16:14,486 INFO L226 Difference]: Without dead ends: 778 [2018-07-25 13:16:14,487 INFO L574 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 [2018-07-25 13:16:14,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2018-07-25 13:16:14,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 630. [2018-07-25 13:16:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2018-07-25 13:16:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 921 transitions. [2018-07-25 13:16:14,881 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 921 transitions. Word has length 18 [2018-07-25 13:16:14,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:14,881 INFO L472 AbstractCegarLoop]: Abstraction has 630 states and 921 transitions. [2018-07-25 13:16:14,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:14,882 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 921 transitions. [2018-07-25 13:16:14,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:14,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:14,883 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:14,883 INFO L415 AbstractCegarLoop]: === Iteration 30 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:14,884 INFO L82 PathProgramCache]: Analyzing trace with hash -571257815, now seen corresponding path program 2 times [2018-07-25 13:16:14,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:14,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:14,923 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:14,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:14,923 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:14,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:14,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:14,924 INFO L87 Difference]: Start difference. First operand 630 states and 921 transitions. Second operand 9 states. [2018-07-25 13:16:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:15,576 INFO L93 Difference]: Finished difference Result 745 states and 1087 transitions. [2018-07-25 13:16:15,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:16:15,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 13:16:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:15,581 INFO L225 Difference]: With dead ends: 745 [2018-07-25 13:16:15,581 INFO L226 Difference]: Without dead ends: 744 [2018-07-25 13:16:15,582 INFO L574 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 [2018-07-25 13:16:15,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-25 13:16:15,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 624. [2018-07-25 13:16:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2018-07-25 13:16:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 910 transitions. [2018-07-25 13:16:15,937 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 910 transitions. Word has length 18 [2018-07-25 13:16:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:15,938 INFO L472 AbstractCegarLoop]: Abstraction has 624 states and 910 transitions. [2018-07-25 13:16:15,938 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 910 transitions. [2018-07-25 13:16:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:15,939 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:15,939 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:15,940 INFO L415 AbstractCegarLoop]: === Iteration 31 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:15,940 INFO L82 PathProgramCache]: Analyzing trace with hash -571168152, now seen corresponding path program 1 times [2018-07-25 13:16:15,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:15,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:15,965 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:15,965 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:15,965 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:15,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:15,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:15,966 INFO L87 Difference]: Start difference. First operand 624 states and 910 transitions. Second operand 8 states. [2018-07-25 13:16:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:16,563 INFO L93 Difference]: Finished difference Result 767 states and 1100 transitions. [2018-07-25 13:16:16,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:16:16,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:16,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:16,568 INFO L225 Difference]: With dead ends: 767 [2018-07-25 13:16:16,568 INFO L226 Difference]: Without dead ends: 765 [2018-07-25 13:16:16,569 INFO L574 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 [2018-07-25 13:16:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2018-07-25 13:16:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 650. [2018-07-25 13:16:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2018-07-25 13:16:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 947 transitions. [2018-07-25 13:16:16,951 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 947 transitions. Word has length 18 [2018-07-25 13:16:16,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:16,951 INFO L472 AbstractCegarLoop]: Abstraction has 650 states and 947 transitions. [2018-07-25 13:16:16,951 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 947 transitions. [2018-07-25 13:16:16,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:16,953 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:16,953 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:16,953 INFO L415 AbstractCegarLoop]: === Iteration 32 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:16,953 INFO L82 PathProgramCache]: Analyzing trace with hash 948617211, now seen corresponding path program 2 times [2018-07-25 13:16:16,954 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:16,978 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:16,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:16,979 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:16,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:16,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:16,979 INFO L87 Difference]: Start difference. First operand 650 states and 947 transitions. Second operand 8 states. [2018-07-25 13:16:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:17,490 INFO L93 Difference]: Finished difference Result 705 states and 1013 transitions. [2018-07-25 13:16:17,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:16:17,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:17,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:17,494 INFO L225 Difference]: With dead ends: 705 [2018-07-25 13:16:17,494 INFO L226 Difference]: Without dead ends: 703 [2018-07-25 13:16:17,495 INFO L574 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 [2018-07-25 13:16:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2018-07-25 13:16:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 672. [2018-07-25 13:16:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2018-07-25 13:16:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 976 transitions. [2018-07-25 13:16:17,880 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 976 transitions. Word has length 18 [2018-07-25 13:16:17,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:17,881 INFO L472 AbstractCegarLoop]: Abstraction has 672 states and 976 transitions. [2018-07-25 13:16:17,881 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:17,881 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 976 transitions. [2018-07-25 13:16:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:17,882 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:17,882 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:17,883 INFO L415 AbstractCegarLoop]: === Iteration 33 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:17,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1156549802, now seen corresponding path program 1 times [2018-07-25 13:16:17,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:17,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:17,910 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:17,910 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:17,912 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:17,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:17,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:17,912 INFO L87 Difference]: Start difference. First operand 672 states and 976 transitions. Second operand 8 states. [2018-07-25 13:16:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:18,415 INFO L93 Difference]: Finished difference Result 766 states and 1106 transitions. [2018-07-25 13:16:18,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:16:18,415 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:18,419 INFO L225 Difference]: With dead ends: 766 [2018-07-25 13:16:18,420 INFO L226 Difference]: Without dead ends: 764 [2018-07-25 13:16:18,420 INFO L574 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 [2018-07-25 13:16:18,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2018-07-25 13:16:18,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 686. [2018-07-25 13:16:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-07-25 13:16:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 997 transitions. [2018-07-25 13:16:18,820 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 997 transitions. Word has length 18 [2018-07-25 13:16:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:18,820 INFO L472 AbstractCegarLoop]: Abstraction has 686 states and 997 transitions. [2018-07-25 13:16:18,821 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 997 transitions. [2018-07-25 13:16:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:18,822 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:18,822 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:18,822 INFO L415 AbstractCegarLoop]: === Iteration 34 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:18,822 INFO L82 PathProgramCache]: Analyzing trace with hash 801556786, now seen corresponding path program 1 times [2018-07-25 13:16:18,823 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:18,838 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:18,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:18,839 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:18,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:18,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:18,840 INFO L87 Difference]: Start difference. First operand 686 states and 997 transitions. Second operand 8 states. [2018-07-25 13:16:19,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:19,368 INFO L93 Difference]: Finished difference Result 781 states and 1129 transitions. [2018-07-25 13:16:19,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:16:19,369 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:19,374 INFO L225 Difference]: With dead ends: 781 [2018-07-25 13:16:19,374 INFO L226 Difference]: Without dead ends: 779 [2018-07-25 13:16:19,375 INFO L574 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 [2018-07-25 13:16:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2018-07-25 13:16:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 707. [2018-07-25 13:16:19,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2018-07-25 13:16:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1026 transitions. [2018-07-25 13:16:19,682 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1026 transitions. Word has length 18 [2018-07-25 13:16:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:19,683 INFO L472 AbstractCegarLoop]: Abstraction has 707 states and 1026 transitions. [2018-07-25 13:16:19,683 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1026 transitions. [2018-07-25 13:16:19,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:19,684 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:19,685 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:19,685 INFO L415 AbstractCegarLoop]: === Iteration 35 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:19,685 INFO L82 PathProgramCache]: Analyzing trace with hash 801556402, now seen corresponding path program 1 times [2018-07-25 13:16:19,685 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:19,703 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:19,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:19,703 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:19,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:19,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:19,704 INFO L87 Difference]: Start difference. First operand 707 states and 1026 transitions. Second operand 8 states. [2018-07-25 13:16:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:20,240 INFO L93 Difference]: Finished difference Result 774 states and 1115 transitions. [2018-07-25 13:16:20,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:16:20,240 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:20,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:20,244 INFO L225 Difference]: With dead ends: 774 [2018-07-25 13:16:20,244 INFO L226 Difference]: Without dead ends: 772 [2018-07-25 13:16:20,245 INFO L574 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 [2018-07-25 13:16:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2018-07-25 13:16:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 683. [2018-07-25 13:16:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-07-25 13:16:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 993 transitions. [2018-07-25 13:16:20,712 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 993 transitions. Word has length 18 [2018-07-25 13:16:20,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:20,713 INFO L472 AbstractCegarLoop]: Abstraction has 683 states and 993 transitions. [2018-07-25 13:16:20,713 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:20,713 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 993 transitions. [2018-07-25 13:16:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:20,715 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:20,715 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:20,715 INFO L415 AbstractCegarLoop]: === Iteration 36 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:20,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1011848743, now seen corresponding path program 2 times [2018-07-25 13:16:20,716 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:20,741 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:20,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:20,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:20,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:20,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:20,742 INFO L87 Difference]: Start difference. First operand 683 states and 993 transitions. Second operand 9 states. [2018-07-25 13:16:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:21,556 INFO L93 Difference]: Finished difference Result 907 states and 1338 transitions. [2018-07-25 13:16:21,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 13:16:21,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 13:16:21,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:21,562 INFO L225 Difference]: With dead ends: 907 [2018-07-25 13:16:21,562 INFO L226 Difference]: Without dead ends: 906 [2018-07-25 13:16:21,563 INFO L574 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 [2018-07-25 13:16:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2018-07-25 13:16:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 746. [2018-07-25 13:16:21,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2018-07-25 13:16:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1095 transitions. [2018-07-25 13:16:21,937 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1095 transitions. Word has length 18 [2018-07-25 13:16:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:21,937 INFO L472 AbstractCegarLoop]: Abstraction has 746 states and 1095 transitions. [2018-07-25 13:16:21,937 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1095 transitions. [2018-07-25 13:16:21,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:21,939 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:21,939 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:21,939 INFO L415 AbstractCegarLoop]: === Iteration 37 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:21,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1011759784, now seen corresponding path program 1 times [2018-07-25 13:16:21,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:21,959 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:21,959 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:21,959 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:21,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:21,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:21,960 INFO L87 Difference]: Start difference. First operand 746 states and 1095 transitions. Second operand 8 states. [2018-07-25 13:16:22,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:22,623 INFO L93 Difference]: Finished difference Result 914 states and 1326 transitions. [2018-07-25 13:16:22,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:16:22,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:22,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:22,629 INFO L225 Difference]: With dead ends: 914 [2018-07-25 13:16:22,630 INFO L226 Difference]: Without dead ends: 912 [2018-07-25 13:16:22,630 INFO L574 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 [2018-07-25 13:16:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2018-07-25 13:16:22,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 761. [2018-07-25 13:16:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2018-07-25 13:16:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1117 transitions. [2018-07-25 13:16:22,998 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1117 transitions. Word has length 18 [2018-07-25 13:16:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:22,998 INFO L472 AbstractCegarLoop]: Abstraction has 761 states and 1117 transitions. [2018-07-25 13:16:22,998 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1117 transitions. [2018-07-25 13:16:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:22,999 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:23,000 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:23,000 INFO L415 AbstractCegarLoop]: === Iteration 38 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:23,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1366841759, now seen corresponding path program 1 times [2018-07-25 13:16:23,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:23,015 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:23,015 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:23,016 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:23,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:23,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:23,016 INFO L87 Difference]: Start difference. First operand 761 states and 1117 transitions. Second operand 8 states. [2018-07-25 13:16:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:23,708 INFO L93 Difference]: Finished difference Result 933 states and 1368 transitions. [2018-07-25 13:16:23,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:16:23,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:23,713 INFO L225 Difference]: With dead ends: 933 [2018-07-25 13:16:23,713 INFO L226 Difference]: Without dead ends: 931 [2018-07-25 13:16:23,714 INFO L574 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 [2018-07-25 13:16:23,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2018-07-25 13:16:24,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 781. [2018-07-25 13:16:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2018-07-25 13:16:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1145 transitions. [2018-07-25 13:16:24,087 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1145 transitions. Word has length 18 [2018-07-25 13:16:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:24,087 INFO L472 AbstractCegarLoop]: Abstraction has 781 states and 1145 transitions. [2018-07-25 13:16:24,087 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1145 transitions. [2018-07-25 13:16:24,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:24,088 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:24,088 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:24,089 INFO L415 AbstractCegarLoop]: === Iteration 39 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:24,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1366842143, now seen corresponding path program 1 times [2018-07-25 13:16:24,089 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:24,106 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:24,106 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:16:24,106 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:24,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:24,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:24,107 INFO L87 Difference]: Start difference. First operand 781 states and 1145 transitions. Second operand 8 states. [2018-07-25 13:16:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:24,695 INFO L93 Difference]: Finished difference Result 821 states and 1189 transitions. [2018-07-25 13:16:24,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:24,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:24,700 INFO L225 Difference]: With dead ends: 821 [2018-07-25 13:16:24,700 INFO L226 Difference]: Without dead ends: 819 [2018-07-25 13:16:24,701 INFO L574 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 [2018-07-25 13:16:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-07-25 13:16:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 741. [2018-07-25 13:16:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2018-07-25 13:16:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1081 transitions. [2018-07-25 13:16:25,031 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1081 transitions. Word has length 18 [2018-07-25 13:16:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:25,031 INFO L472 AbstractCegarLoop]: Abstraction has 741 states and 1081 transitions. [2018-07-25 13:16:25,031 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:25,031 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1081 transitions. [2018-07-25 13:16:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:25,033 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:25,033 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:25,033 INFO L415 AbstractCegarLoop]: === Iteration 40 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:25,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1427971487, now seen corresponding path program 2 times [2018-07-25 13:16:25,033 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:25,048 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:25,048 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:25,048 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:25,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:25,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:25,049 INFO L87 Difference]: Start difference. First operand 741 states and 1081 transitions. Second operand 8 states. [2018-07-25 13:16:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:25,833 INFO L93 Difference]: Finished difference Result 941 states and 1359 transitions. [2018-07-25 13:16:25,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:16:25,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 13:16:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:25,839 INFO L225 Difference]: With dead ends: 941 [2018-07-25 13:16:25,839 INFO L226 Difference]: Without dead ends: 939 [2018-07-25 13:16:25,840 INFO L574 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 [2018-07-25 13:16:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-07-25 13:16:26,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 792. [2018-07-25 13:16:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2018-07-25 13:16:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1155 transitions. [2018-07-25 13:16:26,166 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1155 transitions. Word has length 18 [2018-07-25 13:16:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:26,166 INFO L472 AbstractCegarLoop]: Abstraction has 792 states and 1155 transitions. [2018-07-25 13:16:26,166 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1155 transitions. [2018-07-25 13:16:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 13:16:26,167 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:26,167 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:26,168 INFO L415 AbstractCegarLoop]: === Iteration 41 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:26,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1782964887, now seen corresponding path program 2 times [2018-07-25 13:16:26,168 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:26,183 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:26,184 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:26,184 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:26,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:26,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:26,184 INFO L87 Difference]: Start difference. First operand 792 states and 1155 transitions. Second operand 9 states. [2018-07-25 13:16:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:26,777 INFO L93 Difference]: Finished difference Result 936 states and 1355 transitions. [2018-07-25 13:16:26,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:16:26,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 13:16:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:26,782 INFO L225 Difference]: With dead ends: 936 [2018-07-25 13:16:26,783 INFO L226 Difference]: Without dead ends: 934 [2018-07-25 13:16:26,784 INFO L574 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 [2018-07-25 13:16:26,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2018-07-25 13:16:27,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 827. [2018-07-25 13:16:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2018-07-25 13:16:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1202 transitions. [2018-07-25 13:16:27,105 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1202 transitions. Word has length 18 [2018-07-25 13:16:27,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:27,106 INFO L472 AbstractCegarLoop]: Abstraction has 827 states and 1202 transitions. [2018-07-25 13:16:27,106 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:27,106 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1202 transitions. [2018-07-25 13:16:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 13:16:27,107 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:27,107 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:27,107 INFO L415 AbstractCegarLoop]: === Iteration 42 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:27,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1622613706, now seen corresponding path program 1 times [2018-07-25 13:16:27,108 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:27,128 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:27,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:16:27,128 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:16:27,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:16:27,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:16:27,129 INFO L87 Difference]: Start difference. First operand 827 states and 1202 transitions. Second operand 12 states. [2018-07-25 13:16:28,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:28,156 INFO L93 Difference]: Finished difference Result 1574 states and 2302 transitions. [2018-07-25 13:16:28,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:16:28,156 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-25 13:16:28,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:28,162 INFO L225 Difference]: With dead ends: 1574 [2018-07-25 13:16:28,162 INFO L226 Difference]: Without dead ends: 1572 [2018-07-25 13:16:28,163 INFO L574 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 [2018-07-25 13:16:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2018-07-25 13:16:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1454. [2018-07-25 13:16:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2018-07-25 13:16:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2142 transitions. [2018-07-25 13:16:28,663 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2142 transitions. Word has length 21 [2018-07-25 13:16:28,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:28,663 INFO L472 AbstractCegarLoop]: Abstraction has 1454 states and 2142 transitions. [2018-07-25 13:16:28,663 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:16:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2142 transitions. [2018-07-25 13:16:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 13:16:28,665 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:28,665 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:28,665 INFO L415 AbstractCegarLoop]: === Iteration 43 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:28,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1005591262, now seen corresponding path program 1 times [2018-07-25 13:16:28,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:28,686 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:28,686 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:16:28,686 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:16:28,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:16:28,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:16:28,687 INFO L87 Difference]: Start difference. First operand 1454 states and 2142 transitions. Second operand 12 states. [2018-07-25 13:16:29,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:29,868 INFO L93 Difference]: Finished difference Result 2649 states and 3932 transitions. [2018-07-25 13:16:29,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:16:29,868 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-25 13:16:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:29,881 INFO L225 Difference]: With dead ends: 2649 [2018-07-25 13:16:29,881 INFO L226 Difference]: Without dead ends: 2647 [2018-07-25 13:16:29,884 INFO L574 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 [2018-07-25 13:16:29,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2018-07-25 13:16:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2484. [2018-07-25 13:16:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2484 states. [2018-07-25 13:16:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3704 transitions. [2018-07-25 13:16:30,750 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3704 transitions. Word has length 21 [2018-07-25 13:16:30,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:30,750 INFO L472 AbstractCegarLoop]: Abstraction has 2484 states and 3704 transitions. [2018-07-25 13:16:30,750 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:16:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3704 transitions. [2018-07-25 13:16:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:30,752 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:30,752 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:30,752 INFO L415 AbstractCegarLoop]: === Iteration 44 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:30,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1621422890, now seen corresponding path program 2 times [2018-07-25 13:16:30,752 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:16:30,770 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:30,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:30,771 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:30,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:30,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:30,771 INFO L87 Difference]: Start difference. First operand 2484 states and 3704 transitions. Second operand 9 states. [2018-07-25 13:16:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:31,900 INFO L93 Difference]: Finished difference Result 2521 states and 3747 transitions. [2018-07-25 13:16:31,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:31,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 13:16:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:31,912 INFO L225 Difference]: With dead ends: 2521 [2018-07-25 13:16:31,912 INFO L226 Difference]: Without dead ends: 2520 [2018-07-25 13:16:31,914 INFO L574 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 [2018-07-25 13:16:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2018-07-25 13:16:32,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2484. [2018-07-25 13:16:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2484 states. [2018-07-25 13:16:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3700 transitions. [2018-07-25 13:16:32,734 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3700 transitions. Word has length 22 [2018-07-25 13:16:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:32,735 INFO L472 AbstractCegarLoop]: Abstraction has 2484 states and 3700 transitions. [2018-07-25 13:16:32,735 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:32,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3700 transitions. [2018-07-25 13:16:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:32,736 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:32,736 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:32,736 INFO L415 AbstractCegarLoop]: === Iteration 45 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:32,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1982566808, now seen corresponding path program 1 times [2018-07-25 13:16:32,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:32,752 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:32,752 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:32,752 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:32,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:32,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:32,753 INFO L87 Difference]: Start difference. First operand 2484 states and 3700 transitions. Second operand 9 states. [2018-07-25 13:16:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:33,937 INFO L93 Difference]: Finished difference Result 2741 states and 4062 transitions. [2018-07-25 13:16:33,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:16:33,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 13:16:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:33,947 INFO L225 Difference]: With dead ends: 2741 [2018-07-25 13:16:33,948 INFO L226 Difference]: Without dead ends: 2739 [2018-07-25 13:16:33,950 INFO L574 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 [2018-07-25 13:16:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2018-07-25 13:16:34,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2594. [2018-07-25 13:16:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2018-07-25 13:16:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3858 transitions. [2018-07-25 13:16:34,873 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3858 transitions. Word has length 22 [2018-07-25 13:16:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:34,873 INFO L472 AbstractCegarLoop]: Abstraction has 2594 states and 3858 transitions. [2018-07-25 13:16:34,873 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3858 transitions. [2018-07-25 13:16:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:34,875 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:34,875 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:34,875 INFO L415 AbstractCegarLoop]: === Iteration 46 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:34,876 INFO L82 PathProgramCache]: Analyzing trace with hash -767743653, now seen corresponding path program 2 times [2018-07-25 13:16:34,876 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:34,889 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:34,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:34,890 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:16:34,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:16:34,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:16:34,890 INFO L87 Difference]: Start difference. First operand 2594 states and 3858 transitions. Second operand 10 states. [2018-07-25 13:16:36,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:36,324 INFO L93 Difference]: Finished difference Result 3321 states and 4947 transitions. [2018-07-25 13:16:36,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:16:36,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-25 13:16:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:36,334 INFO L225 Difference]: With dead ends: 3321 [2018-07-25 13:16:36,334 INFO L226 Difference]: Without dead ends: 3319 [2018-07-25 13:16:36,337 INFO L574 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 [2018-07-25 13:16:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2018-07-25 13:16:37,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2735. [2018-07-25 13:16:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2735 states. [2018-07-25 13:16:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4072 transitions. [2018-07-25 13:16:37,447 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4072 transitions. Word has length 22 [2018-07-25 13:16:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:37,447 INFO L472 AbstractCegarLoop]: Abstraction has 2735 states and 4072 transitions. [2018-07-25 13:16:37,447 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:16:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4072 transitions. [2018-07-25 13:16:37,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:37,449 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:37,449 INFO L354 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] [2018-07-25 13:16:37,450 INFO L415 AbstractCegarLoop]: === Iteration 47 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:37,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1122647006, now seen corresponding path program 1 times [2018-07-25 13:16:37,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:37,465 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:37,465 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:37,465 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:37,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:37,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:37,466 INFO L87 Difference]: Start difference. First operand 2735 states and 4072 transitions. Second operand 8 states. [2018-07-25 13:16:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:38,486 INFO L93 Difference]: Finished difference Result 2960 states and 4385 transitions. [2018-07-25 13:16:38,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:16:38,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-07-25 13:16:38,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:38,496 INFO L225 Difference]: With dead ends: 2960 [2018-07-25 13:16:38,496 INFO L226 Difference]: Without dead ends: 2958 [2018-07-25 13:16:38,498 INFO L574 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 [2018-07-25 13:16:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2018-07-25 13:16:39,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2737. [2018-07-25 13:16:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2737 states. [2018-07-25 13:16:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 4072 transitions. [2018-07-25 13:16:39,529 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 4072 transitions. Word has length 22 [2018-07-25 13:16:39,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:39,529 INFO L472 AbstractCegarLoop]: Abstraction has 2737 states and 4072 transitions. [2018-07-25 13:16:39,529 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:39,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 4072 transitions. [2018-07-25 13:16:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:39,531 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:39,531 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:39,531 INFO L415 AbstractCegarLoop]: === Iteration 48 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:39,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1183866397, now seen corresponding path program 1 times [2018-07-25 13:16:39,532 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:16:39,549 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:39,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:39,550 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:39,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:39,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:39,550 INFO L87 Difference]: Start difference. First operand 2737 states and 4072 transitions. Second operand 9 states. [2018-07-25 13:16:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:40,780 INFO L93 Difference]: Finished difference Result 2904 states and 4306 transitions. [2018-07-25 13:16:40,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:40,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 13:16:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:40,788 INFO L225 Difference]: With dead ends: 2904 [2018-07-25 13:16:40,788 INFO L226 Difference]: Without dead ends: 2903 [2018-07-25 13:16:40,790 INFO L574 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 [2018-07-25 13:16:40,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2018-07-25 13:16:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2719. [2018-07-25 13:16:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2719 states. [2018-07-25 13:16:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 4036 transitions. [2018-07-25 13:16:41,808 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 4036 transitions. Word has length 22 [2018-07-25 13:16:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:41,808 INFO L472 AbstractCegarLoop]: Abstraction has 2719 states and 4036 transitions. [2018-07-25 13:16:41,808 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:41,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 4036 transitions. [2018-07-25 13:16:41,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:41,809 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:41,809 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:41,810 INFO L415 AbstractCegarLoop]: === Iteration 49 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:41,810 INFO L82 PathProgramCache]: Analyzing trace with hash 15880131, now seen corresponding path program 1 times [2018-07-25 13:16:41,810 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:41,824 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:41,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:41,824 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:41,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:41,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:41,825 INFO L87 Difference]: Start difference. First operand 2719 states and 4036 transitions. Second operand 8 states. [2018-07-25 13:16:42,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:42,918 INFO L93 Difference]: Finished difference Result 3086 states and 4558 transitions. [2018-07-25 13:16:42,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:16:42,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-07-25 13:16:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:42,924 INFO L225 Difference]: With dead ends: 3086 [2018-07-25 13:16:42,924 INFO L226 Difference]: Without dead ends: 3084 [2018-07-25 13:16:42,925 INFO L574 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 [2018-07-25 13:16:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2018-07-25 13:16:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2747. [2018-07-25 13:16:44,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2747 states. [2018-07-25 13:16:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 4080 transitions. [2018-07-25 13:16:44,050 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 4080 transitions. Word has length 22 [2018-07-25 13:16:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:44,050 INFO L472 AbstractCegarLoop]: Abstraction has 2747 states and 4080 transitions. [2018-07-25 13:16:44,050 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 4080 transitions. [2018-07-25 13:16:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:44,052 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:44,052 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:44,053 INFO L415 AbstractCegarLoop]: === Iteration 50 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:44,053 INFO L82 PathProgramCache]: Analyzing trace with hash 627807824, now seen corresponding path program 1 times [2018-07-25 13:16:44,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:44,078 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:44,078 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:16:44,078 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:16:44,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:16:44,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:16:44,079 INFO L87 Difference]: Start difference. First operand 2747 states and 4080 transitions. Second operand 10 states. [2018-07-25 13:16:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:45,830 INFO L93 Difference]: Finished difference Result 3253 states and 4807 transitions. [2018-07-25 13:16:45,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:16:45,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-25 13:16:45,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:45,835 INFO L225 Difference]: With dead ends: 3253 [2018-07-25 13:16:45,835 INFO L226 Difference]: Without dead ends: 3251 [2018-07-25 13:16:45,836 INFO L574 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 [2018-07-25 13:16:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2018-07-25 13:16:46,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2802. [2018-07-25 13:16:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2802 states. [2018-07-25 13:16:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4162 transitions. [2018-07-25 13:16:46,863 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4162 transitions. Word has length 22 [2018-07-25 13:16:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:46,863 INFO L472 AbstractCegarLoop]: Abstraction has 2802 states and 4162 transitions. [2018-07-25 13:16:46,863 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:16:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4162 transitions. [2018-07-25 13:16:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:46,865 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:46,866 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:46,866 INFO L415 AbstractCegarLoop]: === Iteration 51 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1964547658, now seen corresponding path program 2 times [2018-07-25 13:16:46,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:16:46,885 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:46,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:46,886 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:46,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:46,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:46,886 INFO L87 Difference]: Start difference. First operand 2802 states and 4162 transitions. Second operand 9 states. [2018-07-25 13:16:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:47,912 INFO L93 Difference]: Finished difference Result 2833 states and 4197 transitions. [2018-07-25 13:16:47,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:47,912 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 13:16:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:47,918 INFO L225 Difference]: With dead ends: 2833 [2018-07-25 13:16:47,918 INFO L226 Difference]: Without dead ends: 2832 [2018-07-25 13:16:47,919 INFO L574 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 [2018-07-25 13:16:47,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2018-07-25 13:16:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2802. [2018-07-25 13:16:48,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2802 states. [2018-07-25 13:16:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4158 transitions. [2018-07-25 13:16:48,990 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4158 transitions. Word has length 22 [2018-07-25 13:16:48,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:48,990 INFO L472 AbstractCegarLoop]: Abstraction has 2802 states and 4158 transitions. [2018-07-25 13:16:48,991 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4158 transitions. [2018-07-25 13:16:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:48,992 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:48,993 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:48,993 INFO L415 AbstractCegarLoop]: === Iteration 52 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:48,993 INFO L82 PathProgramCache]: Analyzing trace with hash -430310174, now seen corresponding path program 1 times [2018-07-25 13:16:48,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:49,010 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:49,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:49,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:49,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:49,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:49,011 INFO L87 Difference]: Start difference. First operand 2802 states and 4158 transitions. Second operand 9 states. [2018-07-25 13:16:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:50,161 INFO L93 Difference]: Finished difference Result 3077 states and 4552 transitions. [2018-07-25 13:16:50,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:16:50,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 13:16:50,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:50,168 INFO L225 Difference]: With dead ends: 3077 [2018-07-25 13:16:50,168 INFO L226 Difference]: Without dead ends: 3075 [2018-07-25 13:16:50,169 INFO L574 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 [2018-07-25 13:16:50,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2018-07-25 13:16:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2917. [2018-07-25 13:16:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2917 states. [2018-07-25 13:16:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4324 transitions. [2018-07-25 13:16:51,199 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4324 transitions. Word has length 22 [2018-07-25 13:16:51,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:51,199 INFO L472 AbstractCegarLoop]: Abstraction has 2917 states and 4324 transitions. [2018-07-25 13:16:51,199 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:51,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4324 transitions. [2018-07-25 13:16:51,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:51,201 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:51,201 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:51,201 INFO L415 AbstractCegarLoop]: === Iteration 53 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash -203850887, now seen corresponding path program 1 times [2018-07-25 13:16:51,201 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:16:51,217 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:51,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:51,218 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:16:51,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:16:51,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:16:51,218 INFO L87 Difference]: Start difference. First operand 2917 states and 4324 transitions. Second operand 9 states. [2018-07-25 13:16:52,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:52,520 INFO L93 Difference]: Finished difference Result 3087 states and 4560 transitions. [2018-07-25 13:16:52,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 13:16:52,520 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 13:16:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:52,524 INFO L225 Difference]: With dead ends: 3087 [2018-07-25 13:16:52,524 INFO L226 Difference]: Without dead ends: 3086 [2018-07-25 13:16:52,525 INFO L574 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 [2018-07-25 13:16:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2018-07-25 13:16:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 2915. [2018-07-25 13:16:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2915 states. [2018-07-25 13:16:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 4314 transitions. [2018-07-25 13:16:53,544 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 4314 transitions. Word has length 22 [2018-07-25 13:16:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:53,544 INFO L472 AbstractCegarLoop]: Abstraction has 2915 states and 4314 transitions. [2018-07-25 13:16:53,544 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:16:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 4314 transitions. [2018-07-25 13:16:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:53,545 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:53,546 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:53,546 INFO L415 AbstractCegarLoop]: === Iteration 54 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:53,546 INFO L82 PathProgramCache]: Analyzing trace with hash 345073063, now seen corresponding path program 1 times [2018-07-25 13:16:53,546 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:53,561 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:53,561 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:16:53,561 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:16:53,561 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:16:53,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:16:53,562 INFO L87 Difference]: Start difference. First operand 2915 states and 4314 transitions. Second operand 8 states. [2018-07-25 13:16:54,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:54,774 INFO L93 Difference]: Finished difference Result 3266 states and 4816 transitions. [2018-07-25 13:16:54,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:16:54,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-07-25 13:16:54,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:54,778 INFO L225 Difference]: With dead ends: 3266 [2018-07-25 13:16:54,778 INFO L226 Difference]: Without dead ends: 3264 [2018-07-25 13:16:54,780 INFO L574 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 [2018-07-25 13:16:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2018-07-25 13:16:55,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 2934. [2018-07-25 13:16:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2018-07-25 13:16:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4340 transitions. [2018-07-25 13:16:55,995 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4340 transitions. Word has length 22 [2018-07-25 13:16:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:55,995 INFO L472 AbstractCegarLoop]: Abstraction has 2934 states and 4340 transitions. [2018-07-25 13:16:55,995 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:16:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4340 transitions. [2018-07-25 13:16:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:55,996 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:55,997 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:55,997 INFO L415 AbstractCegarLoop]: === Iteration 55 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:55,997 INFO L82 PathProgramCache]: Analyzing trace with hash -619973631, now seen corresponding path program 2 times [2018-07-25 13:16:55,997 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:56,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:56,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:16:56,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:16:56,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:16:56,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:16:56,010 INFO L87 Difference]: Start difference. First operand 2934 states and 4340 transitions. Second operand 10 states. [2018-07-25 13:16:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:16:57,564 INFO L93 Difference]: Finished difference Result 3688 states and 5467 transitions. [2018-07-25 13:16:57,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:16:57,564 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-25 13:16:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:16:57,569 INFO L225 Difference]: With dead ends: 3688 [2018-07-25 13:16:57,569 INFO L226 Difference]: Without dead ends: 3686 [2018-07-25 13:16:57,571 INFO L574 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 [2018-07-25 13:16:57,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2018-07-25 13:16:58,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3074. [2018-07-25 13:16:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3074 states. [2018-07-25 13:16:58,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 4552 transitions. [2018-07-25 13:16:58,642 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 4552 transitions. Word has length 22 [2018-07-25 13:16:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:16:58,642 INFO L472 AbstractCegarLoop]: Abstraction has 3074 states and 4552 transitions. [2018-07-25 13:16:58,642 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:16:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 4552 transitions. [2018-07-25 13:16:58,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 13:16:58,644 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:16:58,644 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:16:58,644 INFO L415 AbstractCegarLoop]: === Iteration 56 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:16:58,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1613894486, now seen corresponding path program 1 times [2018-07-25 13:16:58,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:16:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:16:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:16:58,662 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:16:58,662 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:16:58,662 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:16:58,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:16:58,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:16:58,662 INFO L87 Difference]: Start difference. First operand 3074 states and 4552 transitions. Second operand 10 states. [2018-07-25 13:17:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:00,150 INFO L93 Difference]: Finished difference Result 3608 states and 5324 transitions. [2018-07-25 13:17:00,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:17:00,150 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-25 13:17:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:00,154 INFO L225 Difference]: With dead ends: 3608 [2018-07-25 13:17:00,154 INFO L226 Difference]: Without dead ends: 3606 [2018-07-25 13:17:00,155 INFO L574 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 [2018-07-25 13:17:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2018-07-25 13:17:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 3133. [2018-07-25 13:17:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3133 states. [2018-07-25 13:17:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 4640 transitions. [2018-07-25 13:17:01,251 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 4640 transitions. Word has length 22 [2018-07-25 13:17:01,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:01,251 INFO L472 AbstractCegarLoop]: Abstraction has 3133 states and 4640 transitions. [2018-07-25 13:17:01,251 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:17:01,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 4640 transitions. [2018-07-25 13:17:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:01,253 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:01,253 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:01,253 INFO L415 AbstractCegarLoop]: === Iteration 57 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:01,254 INFO L82 PathProgramCache]: Analyzing trace with hash -682508600, now seen corresponding path program 2 times [2018-07-25 13:17:01,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:01,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-25 13:17:01,268 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:01,268 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:17:01,269 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:01,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:01,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:01,269 INFO L87 Difference]: Start difference. First operand 3133 states and 4640 transitions. Second operand 11 states. [2018-07-25 13:17:02,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:02,497 INFO L93 Difference]: Finished difference Result 3236 states and 4771 transitions. [2018-07-25 13:17:02,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:17:02,497 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:02,502 INFO L225 Difference]: With dead ends: 3236 [2018-07-25 13:17:02,502 INFO L226 Difference]: Without dead ends: 3235 [2018-07-25 13:17:02,503 INFO L574 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 [2018-07-25 13:17:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2018-07-25 13:17:03,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3144. [2018-07-25 13:17:03,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3144 states. [2018-07-25 13:17:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 4654 transitions. [2018-07-25 13:17:03,624 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 4654 transitions. Word has length 25 [2018-07-25 13:17:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:03,624 INFO L472 AbstractCegarLoop]: Abstraction has 3144 states and 4654 transitions. [2018-07-25 13:17:03,624 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 4654 transitions. [2018-07-25 13:17:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:03,626 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:03,626 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:03,627 INFO L415 AbstractCegarLoop]: === Iteration 58 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:03,627 INFO L82 PathProgramCache]: Analyzing trace with hash -548371823, now seen corresponding path program 1 times [2018-07-25 13:17:03,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:03,649 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:03,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:17:03,650 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:03,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:03,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:03,650 INFO L87 Difference]: Start difference. First operand 3144 states and 4654 transitions. Second operand 11 states. [2018-07-25 13:17:05,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:05,332 INFO L93 Difference]: Finished difference Result 3658 states and 5404 transitions. [2018-07-25 13:17:05,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:17:05,332 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:05,337 INFO L225 Difference]: With dead ends: 3658 [2018-07-25 13:17:05,337 INFO L226 Difference]: Without dead ends: 3656 [2018-07-25 13:17:05,338 INFO L574 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 [2018-07-25 13:17:05,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2018-07-25 13:17:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3270. [2018-07-25 13:17:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2018-07-25 13:17:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4837 transitions. [2018-07-25 13:17:06,544 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4837 transitions. Word has length 25 [2018-07-25 13:17:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:06,545 INFO L472 AbstractCegarLoop]: Abstraction has 3270 states and 4837 transitions. [2018-07-25 13:17:06,545 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:06,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4837 transitions. [2018-07-25 13:17:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:06,548 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:06,548 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:06,548 INFO L415 AbstractCegarLoop]: === Iteration 59 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:06,549 INFO L82 PathProgramCache]: Analyzing trace with hash -843643870, now seen corresponding path program 1 times [2018-07-25 13:17:06,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:17:06,573 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:06,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:17:06,574 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:17:06,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:17:06,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:17:06,574 INFO L87 Difference]: Start difference. First operand 3270 states and 4837 transitions. Second operand 10 states. [2018-07-25 13:17:08,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:08,147 INFO L93 Difference]: Finished difference Result 3411 states and 5033 transitions. [2018-07-25 13:17:08,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:17:08,148 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-25 13:17:08,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:08,152 INFO L225 Difference]: With dead ends: 3411 [2018-07-25 13:17:08,152 INFO L226 Difference]: Without dead ends: 3410 [2018-07-25 13:17:08,154 INFO L574 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 [2018-07-25 13:17:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2018-07-25 13:17:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3284. [2018-07-25 13:17:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3284 states. [2018-07-25 13:17:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 4859 transitions. [2018-07-25 13:17:09,476 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 4859 transitions. Word has length 25 [2018-07-25 13:17:09,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:09,476 INFO L472 AbstractCegarLoop]: Abstraction has 3284 states and 4859 transitions. [2018-07-25 13:17:09,476 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:17:09,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 4859 transitions. [2018-07-25 13:17:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:09,479 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:09,479 INFO L354 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] [2018-07-25 13:17:09,479 INFO L415 AbstractCegarLoop]: === Iteration 60 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:09,480 INFO L82 PathProgramCache]: Analyzing trace with hash -843554207, now seen corresponding path program 1 times [2018-07-25 13:17:09,480 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:09,492 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:09,492 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:17:09,492 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:17:09,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:17:09,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:17:09,493 INFO L87 Difference]: Start difference. First operand 3284 states and 4859 transitions. Second operand 10 states. [2018-07-25 13:17:11,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:11,096 INFO L93 Difference]: Finished difference Result 3561 states and 5284 transitions. [2018-07-25 13:17:11,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:17:11,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-25 13:17:11,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:11,102 INFO L225 Difference]: With dead ends: 3561 [2018-07-25 13:17:11,102 INFO L226 Difference]: Without dead ends: 3559 [2018-07-25 13:17:11,104 INFO L574 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 [2018-07-25 13:17:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2018-07-25 13:17:12,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 3286. [2018-07-25 13:17:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3286 states. [2018-07-25 13:17:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 4860 transitions. [2018-07-25 13:17:12,468 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 4860 transitions. Word has length 25 [2018-07-25 13:17:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:12,468 INFO L472 AbstractCegarLoop]: Abstraction has 3286 states and 4860 transitions. [2018-07-25 13:17:12,468 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:17:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 4860 transitions. [2018-07-25 13:17:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:12,470 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:12,470 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:12,471 INFO L415 AbstractCegarLoop]: === Iteration 61 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash -760804007, now seen corresponding path program 1 times [2018-07-25 13:17:12,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:12,487 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:12,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:17:12,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:12,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:12,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:12,488 INFO L87 Difference]: Start difference. First operand 3286 states and 4860 transitions. Second operand 11 states. [2018-07-25 13:17:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:14,269 INFO L93 Difference]: Finished difference Result 3882 states and 5733 transitions. [2018-07-25 13:17:14,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:17:14,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:14,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:14,274 INFO L225 Difference]: With dead ends: 3882 [2018-07-25 13:17:14,274 INFO L226 Difference]: Without dead ends: 3880 [2018-07-25 13:17:14,276 INFO L574 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 [2018-07-25 13:17:14,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2018-07-25 13:17:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3586. [2018-07-25 13:17:15,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3586 states. [2018-07-25 13:17:15,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5319 transitions. [2018-07-25 13:17:15,664 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5319 transitions. Word has length 25 [2018-07-25 13:17:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:15,665 INFO L472 AbstractCegarLoop]: Abstraction has 3586 states and 5319 transitions. [2018-07-25 13:17:15,665 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5319 transitions. [2018-07-25 13:17:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:15,668 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:15,668 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:15,668 INFO L415 AbstractCegarLoop]: === Iteration 62 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:15,669 INFO L82 PathProgramCache]: Analyzing trace with hash -764742562, now seen corresponding path program 1 times [2018-07-25 13:17:15,669 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:15,689 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:15,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:17:15,689 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:15,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:15,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:15,690 INFO L87 Difference]: Start difference. First operand 3586 states and 5319 transitions. Second operand 11 states. [2018-07-25 13:17:17,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:17,268 INFO L93 Difference]: Finished difference Result 3739 states and 5530 transitions. [2018-07-25 13:17:17,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:17:17,268 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:17,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:17,273 INFO L225 Difference]: With dead ends: 3739 [2018-07-25 13:17:17,274 INFO L226 Difference]: Without dead ends: 3737 [2018-07-25 13:17:17,276 INFO L574 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 [2018-07-25 13:17:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2018-07-25 13:17:18,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3565. [2018-07-25 13:17:18,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3565 states. [2018-07-25 13:17:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 5287 transitions. [2018-07-25 13:17:18,616 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 5287 transitions. Word has length 25 [2018-07-25 13:17:18,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:18,617 INFO L472 AbstractCegarLoop]: Abstraction has 3565 states and 5287 transitions. [2018-07-25 13:17:18,617 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:18,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 5287 transitions. [2018-07-25 13:17:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:18,619 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:18,619 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:18,619 INFO L415 AbstractCegarLoop]: === Iteration 63 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:18,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1119735578, now seen corresponding path program 2 times [2018-07-25 13:17:18,619 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:18,638 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:18,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:17:18,638 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:18,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:18,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:18,639 INFO L87 Difference]: Start difference. First operand 3565 states and 5287 transitions. Second operand 11 states. [2018-07-25 13:17:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:20,191 INFO L93 Difference]: Finished difference Result 3781 states and 5599 transitions. [2018-07-25 13:17:20,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:17:20,191 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:20,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:20,198 INFO L225 Difference]: With dead ends: 3781 [2018-07-25 13:17:20,199 INFO L226 Difference]: Without dead ends: 3779 [2018-07-25 13:17:20,200 INFO L574 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 [2018-07-25 13:17:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2018-07-25 13:17:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3649. [2018-07-25 13:17:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3649 states. [2018-07-25 13:17:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 5423 transitions. [2018-07-25 13:17:21,586 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 5423 transitions. Word has length 25 [2018-07-25 13:17:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:21,586 INFO L472 AbstractCegarLoop]: Abstraction has 3649 states and 5423 transitions. [2018-07-25 13:17:21,586 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:21,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 5423 transitions. [2018-07-25 13:17:21,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:21,588 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:21,588 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:21,589 INFO L415 AbstractCegarLoop]: === Iteration 64 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:21,589 INFO L82 PathProgramCache]: Analyzing trace with hash -266056341, now seen corresponding path program 1 times [2018-07-25 13:17:21,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:21,609 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:21,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:17:21,609 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:21,610 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:21,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:21,610 INFO L87 Difference]: Start difference. First operand 3649 states and 5423 transitions. Second operand 11 states. [2018-07-25 13:17:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:23,283 INFO L93 Difference]: Finished difference Result 3933 states and 5840 transitions. [2018-07-25 13:17:23,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:17:23,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:23,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:23,288 INFO L225 Difference]: With dead ends: 3933 [2018-07-25 13:17:23,288 INFO L226 Difference]: Without dead ends: 3931 [2018-07-25 13:17:23,290 INFO L574 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 [2018-07-25 13:17:23,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2018-07-25 13:17:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3390. [2018-07-25 13:17:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3390 states. [2018-07-25 13:17:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 5040 transitions. [2018-07-25 13:17:24,685 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 5040 transitions. Word has length 25 [2018-07-25 13:17:24,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:24,686 INFO L472 AbstractCegarLoop]: Abstraction has 3390 states and 5040 transitions. [2018-07-25 13:17:24,686 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 5040 transitions. [2018-07-25 13:17:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:24,689 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:24,689 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:24,689 INFO L415 AbstractCegarLoop]: === Iteration 65 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:24,689 INFO L82 PathProgramCache]: Analyzing trace with hash -327186069, now seen corresponding path program 2 times [2018-07-25 13:17:24,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:24,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:24,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:17:24,707 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:24,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:24,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:24,707 INFO L87 Difference]: Start difference. First operand 3390 states and 5040 transitions. Second operand 11 states. [2018-07-25 13:17:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:26,388 INFO L93 Difference]: Finished difference Result 3713 states and 5498 transitions. [2018-07-25 13:17:26,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:17:26,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:26,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:26,393 INFO L225 Difference]: With dead ends: 3713 [2018-07-25 13:17:26,393 INFO L226 Difference]: Without dead ends: 3711 [2018-07-25 13:17:26,394 INFO L574 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 [2018-07-25 13:17:26,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2018-07-25 13:17:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3317. [2018-07-25 13:17:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3317 states. [2018-07-25 13:17:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4921 transitions. [2018-07-25 13:17:27,747 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4921 transitions. Word has length 25 [2018-07-25 13:17:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:27,747 INFO L472 AbstractCegarLoop]: Abstraction has 3317 states and 4921 transitions. [2018-07-25 13:17:27,747 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4921 transitions. [2018-07-25 13:17:27,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:27,750 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:27,750 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:27,750 INFO L415 AbstractCegarLoop]: === Iteration 66 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash -682179085, now seen corresponding path program 1 times [2018-07-25 13:17:27,750 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:27,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:27,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:17:27,772 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:17:27,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:17:27,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:17:27,772 INFO L87 Difference]: Start difference. First operand 3317 states and 4921 transitions. Second operand 12 states. [2018-07-25 13:17:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:29,409 INFO L93 Difference]: Finished difference Result 3507 states and 5215 transitions. [2018-07-25 13:17:29,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:17:29,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-07-25 13:17:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:29,414 INFO L225 Difference]: With dead ends: 3507 [2018-07-25 13:17:29,414 INFO L226 Difference]: Without dead ends: 3506 [2018-07-25 13:17:29,415 INFO L574 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 [2018-07-25 13:17:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2018-07-25 13:17:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3311. [2018-07-25 13:17:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2018-07-25 13:17:30,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4896 transitions. [2018-07-25 13:17:30,812 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4896 transitions. Word has length 25 [2018-07-25 13:17:30,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:30,812 INFO L472 AbstractCegarLoop]: Abstraction has 3311 states and 4896 transitions. [2018-07-25 13:17:30,813 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:17:30,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4896 transitions. [2018-07-25 13:17:30,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:30,815 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:30,815 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:30,815 INFO L415 AbstractCegarLoop]: === Iteration 67 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:30,815 INFO L82 PathProgramCache]: Analyzing trace with hash -682089422, now seen corresponding path program 1 times [2018-07-25 13:17:30,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:30,835 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:30,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:17:30,835 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:30,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:30,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:30,836 INFO L87 Difference]: Start difference. First operand 3311 states and 4896 transitions. Second operand 11 states. [2018-07-25 13:17:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:32,550 INFO L93 Difference]: Finished difference Result 3779 states and 5560 transitions. [2018-07-25 13:17:32,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:17:32,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:32,557 INFO L225 Difference]: With dead ends: 3779 [2018-07-25 13:17:32,557 INFO L226 Difference]: Without dead ends: 3777 [2018-07-25 13:17:32,559 INFO L574 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 [2018-07-25 13:17:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2018-07-25 13:17:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3309. [2018-07-25 13:17:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3309 states. [2018-07-25 13:17:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4898 transitions. [2018-07-25 13:17:33,983 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4898 transitions. Word has length 25 [2018-07-25 13:17:33,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:33,983 INFO L472 AbstractCegarLoop]: Abstraction has 3309 states and 4898 transitions. [2018-07-25 13:17:33,983 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4898 transitions. [2018-07-25 13:17:33,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:33,986 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:33,986 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:33,986 INFO L415 AbstractCegarLoop]: === Iteration 68 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:33,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1834260598, now seen corresponding path program 2 times [2018-07-25 13:17:33,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-25 13:17:34,004 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:34,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:17:34,005 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:34,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:34,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:34,005 INFO L87 Difference]: Start difference. First operand 3309 states and 4898 transitions. Second operand 11 states. [2018-07-25 13:17:35,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:35,759 INFO L93 Difference]: Finished difference Result 3453 states and 5091 transitions. [2018-07-25 13:17:35,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:17:35,760 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:35,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:35,764 INFO L225 Difference]: With dead ends: 3453 [2018-07-25 13:17:35,764 INFO L226 Difference]: Without dead ends: 3452 [2018-07-25 13:17:35,765 INFO L574 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 [2018-07-25 13:17:35,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3452 states. [2018-07-25 13:17:37,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3452 to 3335. [2018-07-25 13:17:37,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3335 states. [2018-07-25 13:17:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3335 states to 3335 states and 4934 transitions. [2018-07-25 13:17:37,215 INFO L78 Accepts]: Start accepts. Automaton has 3335 states and 4934 transitions. Word has length 25 [2018-07-25 13:17:37,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:37,216 INFO L472 AbstractCegarLoop]: Abstraction has 3335 states and 4934 transitions. [2018-07-25 13:17:37,216 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3335 states and 4934 transitions. [2018-07-25 13:17:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:37,218 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:37,218 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:37,218 INFO L415 AbstractCegarLoop]: === Iteration 69 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:37,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1045899279, now seen corresponding path program 1 times [2018-07-25 13:17:37,218 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:37,240 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:37,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:17:37,240 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:37,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:37,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:37,241 INFO L87 Difference]: Start difference. First operand 3335 states and 4934 transitions. Second operand 11 states. [2018-07-25 13:17:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:39,157 INFO L93 Difference]: Finished difference Result 3881 states and 5736 transitions. [2018-07-25 13:17:39,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 13:17:39,158 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:39,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:39,162 INFO L225 Difference]: With dead ends: 3881 [2018-07-25 13:17:39,162 INFO L226 Difference]: Without dead ends: 3879 [2018-07-25 13:17:39,163 INFO L574 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 [2018-07-25 13:17:39,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2018-07-25 13:17:40,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3492. [2018-07-25 13:17:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3492 states. [2018-07-25 13:17:40,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 5163 transitions. [2018-07-25 13:17:40,687 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 5163 transitions. Word has length 25 [2018-07-25 13:17:40,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:40,687 INFO L472 AbstractCegarLoop]: Abstraction has 3492 states and 5163 transitions. [2018-07-25 13:17:40,687 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:40,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 5163 transitions. [2018-07-25 13:17:40,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:40,689 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:40,689 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:40,690 INFO L415 AbstractCegarLoop]: === Iteration 70 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:40,690 INFO L82 PathProgramCache]: Analyzing trace with hash -746629056, now seen corresponding path program 1 times [2018-07-25 13:17:40,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:17:40,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:40,708 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:17:40,708 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:17:40,708 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:17:40,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:17:40,709 INFO L87 Difference]: Start difference. First operand 3492 states and 5163 transitions. Second operand 10 states. [2018-07-25 13:17:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:42,659 INFO L93 Difference]: Finished difference Result 3625 states and 5347 transitions. [2018-07-25 13:17:42,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:17:42,659 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-25 13:17:42,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:42,665 INFO L225 Difference]: With dead ends: 3625 [2018-07-25 13:17:42,665 INFO L226 Difference]: Without dead ends: 3624 [2018-07-25 13:17:42,666 INFO L574 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 [2018-07-25 13:17:42,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2018-07-25 13:17:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3506. [2018-07-25 13:17:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3506 states. [2018-07-25 13:17:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 5185 transitions. [2018-07-25 13:17:44,311 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 5185 transitions. Word has length 25 [2018-07-25 13:17:44,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:44,311 INFO L472 AbstractCegarLoop]: Abstraction has 3506 states and 5185 transitions. [2018-07-25 13:17:44,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:17:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 5185 transitions. [2018-07-25 13:17:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:44,314 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:44,314 INFO L354 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] [2018-07-25 13:17:44,314 INFO L415 AbstractCegarLoop]: === Iteration 71 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:44,314 INFO L82 PathProgramCache]: Analyzing trace with hash -746540097, now seen corresponding path program 1 times [2018-07-25 13:17:44,314 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:44,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:44,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:17:44,332 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:17:44,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:17:44,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:17:44,333 INFO L87 Difference]: Start difference. First operand 3506 states and 5185 transitions. Second operand 10 states. [2018-07-25 13:17:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:46,773 INFO L93 Difference]: Finished difference Result 3779 states and 5600 transitions. [2018-07-25 13:17:46,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 13:17:46,773 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-25 13:17:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:46,778 INFO L225 Difference]: With dead ends: 3779 [2018-07-25 13:17:46,778 INFO L226 Difference]: Without dead ends: 3777 [2018-07-25 13:17:46,779 INFO L574 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 [2018-07-25 13:17:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2018-07-25 13:17:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3508. [2018-07-25 13:17:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3508 states. [2018-07-25 13:17:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3508 states to 3508 states and 5186 transitions. [2018-07-25 13:17:48,439 INFO L78 Accepts]: Start accepts. Automaton has 3508 states and 5186 transitions. Word has length 25 [2018-07-25 13:17:48,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:48,439 INFO L472 AbstractCegarLoop]: Abstraction has 3508 states and 5186 transitions. [2018-07-25 13:17:48,439 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:17:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3508 states and 5186 transitions. [2018-07-25 13:17:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:48,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:48,441 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:48,442 INFO L415 AbstractCegarLoop]: === Iteration 72 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:48,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2007923005, now seen corresponding path program 1 times [2018-07-25 13:17:48,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:48,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:48,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:17:48,456 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:48,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:48,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:48,457 INFO L87 Difference]: Start difference. First operand 3508 states and 5186 transitions. Second operand 11 states. [2018-07-25 13:17:50,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:50,411 INFO L93 Difference]: Finished difference Result 4106 states and 6063 transitions. [2018-07-25 13:17:50,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:17:50,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:50,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:50,416 INFO L225 Difference]: With dead ends: 4106 [2018-07-25 13:17:50,416 INFO L226 Difference]: Without dead ends: 4104 [2018-07-25 13:17:50,418 INFO L574 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 [2018-07-25 13:17:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2018-07-25 13:17:52,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3808. [2018-07-25 13:17:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3808 states. [2018-07-25 13:17:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 5645 transitions. [2018-07-25 13:17:52,108 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 5645 transitions. Word has length 25 [2018-07-25 13:17:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:52,108 INFO L472 AbstractCegarLoop]: Abstraction has 3808 states and 5645 transitions. [2018-07-25 13:17:52,108 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 5645 transitions. [2018-07-25 13:17:52,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:52,110 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:52,110 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:52,110 INFO L415 AbstractCegarLoop]: === Iteration 73 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:52,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1294788559, now seen corresponding path program 2 times [2018-07-25 13:17:52,111 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:52,129 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:52,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:17:52,129 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:52,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:52,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:52,130 INFO L87 Difference]: Start difference. First operand 3808 states and 5645 transitions. Second operand 11 states. [2018-07-25 13:17:54,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:54,058 INFO L93 Difference]: Finished difference Result 4020 states and 5953 transitions. [2018-07-25 13:17:54,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 13:17:54,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:54,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:54,063 INFO L225 Difference]: With dead ends: 4020 [2018-07-25 13:17:54,063 INFO L226 Difference]: Without dead ends: 4018 [2018-07-25 13:17:54,064 INFO L574 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 [2018-07-25 13:17:54,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2018-07-25 13:17:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 3902. [2018-07-25 13:17:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3902 states. [2018-07-25 13:17:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3902 states to 3902 states and 5795 transitions. [2018-07-25 13:17:55,786 INFO L78 Accepts]: Start accepts. Automaton has 3902 states and 5795 transitions. Word has length 25 [2018-07-25 13:17:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:55,786 INFO L472 AbstractCegarLoop]: Abstraction has 3902 states and 5795 transitions. [2018-07-25 13:17:55,786 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states and 5795 transitions. [2018-07-25 13:17:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:55,789 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:55,789 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:55,789 INFO L415 AbstractCegarLoop]: === Iteration 74 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:55,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1649781575, now seen corresponding path program 1 times [2018-07-25 13:17:55,789 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:55,802 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:55,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:17:55,802 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:17:55,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:17:55,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:17:55,803 INFO L87 Difference]: Start difference. First operand 3902 states and 5795 transitions. Second operand 11 states. [2018-07-25 13:17:57,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:17:57,793 INFO L93 Difference]: Finished difference Result 4050 states and 5999 transitions. [2018-07-25 13:17:57,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:17:57,793 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:17:57,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:17:57,798 INFO L225 Difference]: With dead ends: 4050 [2018-07-25 13:17:57,798 INFO L226 Difference]: Without dead ends: 4048 [2018-07-25 13:17:57,799 INFO L574 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 [2018-07-25 13:17:57,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2018-07-25 13:17:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 3881. [2018-07-25 13:17:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3881 states. [2018-07-25 13:17:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3881 states to 3881 states and 5763 transitions. [2018-07-25 13:17:59,538 INFO L78 Accepts]: Start accepts. Automaton has 3881 states and 5763 transitions. Word has length 25 [2018-07-25 13:17:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:17:59,539 INFO L472 AbstractCegarLoop]: Abstraction has 3881 states and 5763 transitions. [2018-07-25 13:17:59,539 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:17:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3881 states and 5763 transitions. [2018-07-25 13:17:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:17:59,541 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:17:59,541 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:17:59,541 INFO L415 AbstractCegarLoop]: === Iteration 75 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:17:59,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1238220129, now seen corresponding path program 3 times [2018-07-25 13:17:59,541 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:17:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:17:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:17:59,563 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:17:59,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:17:59,564 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:17:59,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:17:59,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:17:59,564 INFO L87 Difference]: Start difference. First operand 3881 states and 5763 transitions. Second operand 12 states. [2018-07-25 13:18:01,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:01,533 INFO L93 Difference]: Finished difference Result 4100 states and 6121 transitions. [2018-07-25 13:18:01,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:18:01,533 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-07-25 13:18:01,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:01,538 INFO L225 Difference]: With dead ends: 4100 [2018-07-25 13:18:01,538 INFO L226 Difference]: Without dead ends: 4099 [2018-07-25 13:18:01,540 INFO L574 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 [2018-07-25 13:18:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2018-07-25 13:18:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 3881. [2018-07-25 13:18:03,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3881 states. [2018-07-25 13:18:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3881 states to 3881 states and 5751 transitions. [2018-07-25 13:18:03,315 INFO L78 Accepts]: Start accepts. Automaton has 3881 states and 5751 transitions. Word has length 25 [2018-07-25 13:18:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:03,316 INFO L472 AbstractCegarLoop]: Abstraction has 3881 states and 5751 transitions. [2018-07-25 13:18:03,316 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:18:03,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3881 states and 5751 transitions. [2018-07-25 13:18:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:18:03,318 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:03,318 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:03,318 INFO L415 AbstractCegarLoop]: === Iteration 76 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:03,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1238131170, now seen corresponding path program 1 times [2018-07-25 13:18:03,319 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:03,334 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:03,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:18:03,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:18:03,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:18:03,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:18:03,335 INFO L87 Difference]: Start difference. First operand 3881 states and 5751 transitions. Second operand 11 states. [2018-07-25 13:18:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:05,678 INFO L93 Difference]: Finished difference Result 4334 states and 6405 transitions. [2018-07-25 13:18:05,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 13:18:05,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:18:05,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:05,685 INFO L225 Difference]: With dead ends: 4334 [2018-07-25 13:18:05,685 INFO L226 Difference]: Without dead ends: 4332 [2018-07-25 13:18:05,687 INFO L574 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 [2018-07-25 13:18:05,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2018-07-25 13:18:07,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3884. [2018-07-25 13:18:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3884 states. [2018-07-25 13:18:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5761 transitions. [2018-07-25 13:18:07,707 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5761 transitions. Word has length 25 [2018-07-25 13:18:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:07,708 INFO L472 AbstractCegarLoop]: Abstraction has 3884 states and 5761 transitions. [2018-07-25 13:18:07,708 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:18:07,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5761 transitions. [2018-07-25 13:18:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:18:07,710 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:07,711 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:07,711 INFO L415 AbstractCegarLoop]: === Iteration 77 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1593213145, now seen corresponding path program 2 times [2018-07-25 13:18:07,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:07,728 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:07,728 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:18:07,728 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:18:07,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:18:07,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:18:07,729 INFO L87 Difference]: Start difference. First operand 3884 states and 5761 transitions. Second operand 11 states. [2018-07-25 13:18:09,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:09,998 INFO L93 Difference]: Finished difference Result 4233 states and 6284 transitions. [2018-07-25 13:18:09,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 13:18:09,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:18:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:10,004 INFO L225 Difference]: With dead ends: 4233 [2018-07-25 13:18:10,004 INFO L226 Difference]: Without dead ends: 4231 [2018-07-25 13:18:10,006 INFO L574 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 [2018-07-25 13:18:10,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2018-07-25 13:18:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 3898. [2018-07-25 13:18:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3898 states. [2018-07-25 13:18:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5767 transitions. [2018-07-25 13:18:11,977 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5767 transitions. Word has length 25 [2018-07-25 13:18:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:11,977 INFO L472 AbstractCegarLoop]: Abstraction has 3898 states and 5767 transitions. [2018-07-25 13:18:11,977 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:18:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5767 transitions. [2018-07-25 13:18:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 13:18:11,979 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:11,979 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:11,979 INFO L415 AbstractCegarLoop]: === Iteration 78 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:11,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1654342873, now seen corresponding path program 3 times [2018-07-25 13:18:11,980 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:12,001 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:12,001 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:18:12,002 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:18:12,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:18:12,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:18:12,002 INFO L87 Difference]: Start difference. First operand 3898 states and 5767 transitions. Second operand 11 states. [2018-07-25 13:18:14,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:14,128 INFO L93 Difference]: Finished difference Result 4193 states and 6183 transitions. [2018-07-25 13:18:14,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:18:14,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 13:18:14,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:14,134 INFO L225 Difference]: With dead ends: 4193 [2018-07-25 13:18:14,135 INFO L226 Difference]: Without dead ends: 4191 [2018-07-25 13:18:14,136 INFO L574 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 [2018-07-25 13:18:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2018-07-25 13:18:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 3545. [2018-07-25 13:18:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-07-25 13:18:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 5244 transitions. [2018-07-25 13:18:15,835 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 5244 transitions. Word has length 25 [2018-07-25 13:18:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:15,835 INFO L472 AbstractCegarLoop]: Abstraction has 3545 states and 5244 transitions. [2018-07-25 13:18:15,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:18:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 5244 transitions. [2018-07-25 13:18:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:18:15,838 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:15,838 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:15,838 INFO L415 AbstractCegarLoop]: === Iteration 79 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:15,838 INFO L82 PathProgramCache]: Analyzing trace with hash 787908893, now seen corresponding path program 3 times [2018-07-25 13:18:15,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-25 13:18:15,853 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:15,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:18:15,853 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:18:15,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:18:15,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:18:15,854 INFO L87 Difference]: Start difference. First operand 3545 states and 5244 transitions. Second operand 9 states. [2018-07-25 13:18:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:17,867 INFO L93 Difference]: Finished difference Result 3941 states and 5794 transitions. [2018-07-25 13:18:17,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:18:17,867 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 13:18:17,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:17,873 INFO L225 Difference]: With dead ends: 3941 [2018-07-25 13:18:17,873 INFO L226 Difference]: Without dead ends: 3939 [2018-07-25 13:18:17,874 INFO L574 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 [2018-07-25 13:18:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2018-07-25 13:18:19,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3561. [2018-07-25 13:18:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3561 states. [2018-07-25 13:18:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5266 transitions. [2018-07-25 13:18:19,571 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5266 transitions. Word has length 26 [2018-07-25 13:18:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:19,571 INFO L472 AbstractCegarLoop]: Abstraction has 3561 states and 5266 transitions. [2018-07-25 13:18:19,571 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:18:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5266 transitions. [2018-07-25 13:18:19,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:18:19,574 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:19,574 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:19,575 INFO L415 AbstractCegarLoop]: === Iteration 80 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:19,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1399836586, now seen corresponding path program 1 times [2018-07-25 13:18:19,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:18:19,589 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:19,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:18:19,590 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:18:19,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:18:19,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:18:19,590 INFO L87 Difference]: Start difference. First operand 3561 states and 5266 transitions. Second operand 9 states. [2018-07-25 13:18:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:21,802 INFO L93 Difference]: Finished difference Result 4069 states and 5985 transitions. [2018-07-25 13:18:21,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:18:21,802 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 13:18:21,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:21,808 INFO L225 Difference]: With dead ends: 4069 [2018-07-25 13:18:21,808 INFO L226 Difference]: Without dead ends: 4067 [2018-07-25 13:18:21,810 INFO L574 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 [2018-07-25 13:18:21,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2018-07-25 13:18:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 3477. [2018-07-25 13:18:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3477 states. [2018-07-25 13:18:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3477 states to 3477 states and 5132 transitions. [2018-07-25 13:18:23,497 INFO L78 Accepts]: Start accepts. Automaton has 3477 states and 5132 transitions. Word has length 26 [2018-07-25 13:18:23,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:23,497 INFO L472 AbstractCegarLoop]: Abstraction has 3477 states and 5132 transitions. [2018-07-25 13:18:23,497 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:18:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states and 5132 transitions. [2018-07-25 13:18:23,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:18:23,499 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:23,499 INFO L354 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] [2018-07-25 13:18:23,499 INFO L415 AbstractCegarLoop]: === Iteration 81 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:23,499 INFO L82 PathProgramCache]: Analyzing trace with hash -2111506926, now seen corresponding path program 1 times [2018-07-25 13:18:23,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:18:23,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:23,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:18:23,511 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:18:23,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:18:23,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:18:23,511 INFO L87 Difference]: Start difference. First operand 3477 states and 5132 transitions. Second operand 9 states. [2018-07-25 13:18:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:25,625 INFO L93 Difference]: Finished difference Result 4012 states and 5890 transitions. [2018-07-25 13:18:25,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:18:25,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 13:18:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:25,630 INFO L225 Difference]: With dead ends: 4012 [2018-07-25 13:18:25,631 INFO L226 Difference]: Without dead ends: 4010 [2018-07-25 13:18:25,632 INFO L574 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 [2018-07-25 13:18:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2018-07-25 13:18:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3427. [2018-07-25 13:18:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3427 states. [2018-07-25 13:18:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 5054 transitions. [2018-07-25 13:18:27,391 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 5054 transitions. Word has length 26 [2018-07-25 13:18:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:27,391 INFO L472 AbstractCegarLoop]: Abstraction has 3427 states and 5054 transitions. [2018-07-25 13:18:27,392 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:18:27,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 5054 transitions. [2018-07-25 13:18:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:18:27,393 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:27,393 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:27,394 INFO L415 AbstractCegarLoop]: === Iteration 82 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:27,394 INFO L82 PathProgramCache]: Analyzing trace with hash -538919271, now seen corresponding path program 3 times [2018-07-25 13:18:27,394 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-25 13:18:27,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:27,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:18:27,408 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:18:27,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:18:27,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:18:27,409 INFO L87 Difference]: Start difference. First operand 3427 states and 5054 transitions. Second operand 9 states. [2018-07-25 13:18:29,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:29,454 INFO L93 Difference]: Finished difference Result 3823 states and 5604 transitions. [2018-07-25 13:18:29,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:18:29,455 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 13:18:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:29,459 INFO L225 Difference]: With dead ends: 3823 [2018-07-25 13:18:29,459 INFO L226 Difference]: Without dead ends: 3821 [2018-07-25 13:18:29,460 INFO L574 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 [2018-07-25 13:18:29,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2018-07-25 13:18:31,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 3443. [2018-07-25 13:18:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2018-07-25 13:18:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 5076 transitions. [2018-07-25 13:18:31,374 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 5076 transitions. Word has length 26 [2018-07-25 13:18:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:31,374 INFO L472 AbstractCegarLoop]: Abstraction has 3443 states and 5076 transitions. [2018-07-25 13:18:31,374 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:18:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 5076 transitions. [2018-07-25 13:18:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:18:31,376 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:31,376 INFO L354 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] [2018-07-25 13:18:31,376 INFO L415 AbstractCegarLoop]: === Iteration 83 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:31,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1694948846, now seen corresponding path program 1 times [2018-07-25 13:18:31,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:18:31,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:31,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:18:31,393 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:18:31,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:18:31,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:18:31,396 INFO L87 Difference]: Start difference. First operand 3443 states and 5076 transitions. Second operand 9 states. [2018-07-25 13:18:33,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:33,586 INFO L93 Difference]: Finished difference Result 3990 states and 5852 transitions. [2018-07-25 13:18:33,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:18:33,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 13:18:33,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:33,593 INFO L225 Difference]: With dead ends: 3990 [2018-07-25 13:18:33,594 INFO L226 Difference]: Without dead ends: 3988 [2018-07-25 13:18:33,595 INFO L574 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 [2018-07-25 13:18:33,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2018-07-25 13:18:35,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3412. [2018-07-25 13:18:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3412 states. [2018-07-25 13:18:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5028 transitions. [2018-07-25 13:18:35,353 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5028 transitions. Word has length 26 [2018-07-25 13:18:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:35,353 INFO L472 AbstractCegarLoop]: Abstraction has 3412 states and 5028 transitions. [2018-07-25 13:18:35,353 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:18:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5028 transitions. [2018-07-25 13:18:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 13:18:35,355 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:35,355 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:35,355 INFO L415 AbstractCegarLoop]: === Iteration 84 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:35,355 INFO L82 PathProgramCache]: Analyzing trace with hash 729902152, now seen corresponding path program 1 times [2018-07-25 13:18:35,355 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:18:35,370 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:35,370 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:18:35,370 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:18:35,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:18:35,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:18:35,371 INFO L87 Difference]: Start difference. First operand 3412 states and 5028 transitions. Second operand 9 states. [2018-07-25 13:18:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:37,560 INFO L93 Difference]: Finished difference Result 3873 states and 5676 transitions. [2018-07-25 13:18:37,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 13:18:37,560 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 13:18:37,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:37,565 INFO L225 Difference]: With dead ends: 3873 [2018-07-25 13:18:37,565 INFO L226 Difference]: Without dead ends: 3871 [2018-07-25 13:18:37,566 INFO L574 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 [2018-07-25 13:18:37,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2018-07-25 13:18:39,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3309. [2018-07-25 13:18:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3309 states. [2018-07-25 13:18:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4864 transitions. [2018-07-25 13:18:39,312 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4864 transitions. Word has length 26 [2018-07-25 13:18:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:39,313 INFO L472 AbstractCegarLoop]: Abstraction has 3309 states and 4864 transitions. [2018-07-25 13:18:39,313 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:18:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4864 transitions. [2018-07-25 13:18:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:18:39,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:39,315 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:39,315 INFO L415 AbstractCegarLoop]: === Iteration 85 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:39,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1263161747, now seen corresponding path program 2 times [2018-07-25 13:18:39,316 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:39,330 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:39,330 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:18:39,331 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:18:39,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:18:39,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:18:39,331 INFO L87 Difference]: Start difference. First operand 3309 states and 4864 transitions. Second operand 10 states. [2018-07-25 13:18:41,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:41,493 INFO L93 Difference]: Finished difference Result 3625 states and 5291 transitions. [2018-07-25 13:18:41,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:18:41,493 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-25 13:18:41,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:41,497 INFO L225 Difference]: With dead ends: 3625 [2018-07-25 13:18:41,497 INFO L226 Difference]: Without dead ends: 3623 [2018-07-25 13:18:41,498 INFO L574 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 [2018-07-25 13:18:41,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2018-07-25 13:18:43,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3411. [2018-07-25 13:18:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3411 states. [2018-07-25 13:18:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 5008 transitions. [2018-07-25 13:18:43,329 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 5008 transitions. Word has length 29 [2018-07-25 13:18:43,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:43,329 INFO L472 AbstractCegarLoop]: Abstraction has 3411 states and 5008 transitions. [2018-07-25 13:18:43,329 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:18:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 5008 transitions. [2018-07-25 13:18:43,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:18:43,332 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:43,332 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:43,332 INFO L415 AbstractCegarLoop]: === Iteration 86 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:43,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1259223192, now seen corresponding path program 2 times [2018-07-25 13:18:43,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:43,346 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:43,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:18:43,346 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:18:43,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:18:43,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:18:43,347 INFO L87 Difference]: Start difference. First operand 3411 states and 5008 transitions. Second operand 10 states. [2018-07-25 13:18:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:45,545 INFO L93 Difference]: Finished difference Result 3682 states and 5400 transitions. [2018-07-25 13:18:45,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:18:45,545 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-25 13:18:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:45,549 INFO L225 Difference]: With dead ends: 3682 [2018-07-25 13:18:45,550 INFO L226 Difference]: Without dead ends: 3680 [2018-07-25 13:18:45,551 INFO L574 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 [2018-07-25 13:18:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2018-07-25 13:18:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3422. [2018-07-25 13:18:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3422 states. [2018-07-25 13:18:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 5023 transitions. [2018-07-25 13:18:47,397 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 5023 transitions. Word has length 29 [2018-07-25 13:18:47,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:47,397 INFO L472 AbstractCegarLoop]: Abstraction has 3422 states and 5023 transitions. [2018-07-25 13:18:47,397 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:18:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 5023 transitions. [2018-07-25 13:18:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:18:47,400 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:47,400 INFO L354 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] [2018-07-25 13:18:47,400 INFO L415 AbstractCegarLoop]: === Iteration 87 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:47,400 INFO L82 PathProgramCache]: Analyzing trace with hash 904319839, now seen corresponding path program 2 times [2018-07-25 13:18:47,400 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-25 13:18:47,413 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:47,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:18:47,414 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:18:47,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:18:47,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:18:47,414 INFO L87 Difference]: Start difference. First operand 3422 states and 5023 transitions. Second operand 9 states. [2018-07-25 13:18:49,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:49,421 INFO L93 Difference]: Finished difference Result 3641 states and 5314 transitions. [2018-07-25 13:18:49,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:18:49,421 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-07-25 13:18:49,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:49,425 INFO L225 Difference]: With dead ends: 3641 [2018-07-25 13:18:49,426 INFO L226 Difference]: Without dead ends: 3639 [2018-07-25 13:18:49,427 INFO L574 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 [2018-07-25 13:18:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2018-07-25 13:18:51,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3420. [2018-07-25 13:18:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3420 states. [2018-07-25 13:18:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 5021 transitions. [2018-07-25 13:18:51,317 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 5021 transitions. Word has length 29 [2018-07-25 13:18:51,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:51,317 INFO L472 AbstractCegarLoop]: Abstraction has 3420 states and 5021 transitions. [2018-07-25 13:18:51,317 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:18:51,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 5021 transitions. [2018-07-25 13:18:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:18:51,319 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:51,319 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:51,320 INFO L415 AbstractCegarLoop]: === Iteration 88 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:51,320 INFO L82 PathProgramCache]: Analyzing trace with hash 987070039, now seen corresponding path program 3 times [2018-07-25 13:18:51,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:18:51,337 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:51,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:18:51,337 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:18:51,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:18:51,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:18:51,337 INFO L87 Difference]: Start difference. First operand 3420 states and 5021 transitions. Second operand 12 states. [2018-07-25 13:18:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:53,525 INFO L93 Difference]: Finished difference Result 3801 states and 5543 transitions. [2018-07-25 13:18:53,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:18:53,525 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-25 13:18:53,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:53,530 INFO L225 Difference]: With dead ends: 3801 [2018-07-25 13:18:53,531 INFO L226 Difference]: Without dead ends: 3799 [2018-07-25 13:18:53,532 INFO L574 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 [2018-07-25 13:18:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2018-07-25 13:18:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 3547. [2018-07-25 13:18:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3547 states. [2018-07-25 13:18:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 5208 transitions. [2018-07-25 13:18:55,525 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 5208 transitions. Word has length 29 [2018-07-25 13:18:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:18:55,525 INFO L472 AbstractCegarLoop]: Abstraction has 3547 states and 5208 transitions. [2018-07-25 13:18:55,525 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:18:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 5208 transitions. [2018-07-25 13:18:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:18:55,527 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:18:55,527 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:18:55,528 INFO L415 AbstractCegarLoop]: === Iteration 89 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:18:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash 983131868, now seen corresponding path program 1 times [2018-07-25 13:18:55,528 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:18:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:18:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:18:55,543 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:18:55,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:18:55,544 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:18:55,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:18:55,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:18:55,544 INFO L87 Difference]: Start difference. First operand 3547 states and 5208 transitions. Second operand 11 states. [2018-07-25 13:18:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:18:58,197 INFO L93 Difference]: Finished difference Result 3952 states and 5785 transitions. [2018-07-25 13:18:58,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:18:58,197 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 13:18:58,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:18:58,203 INFO L225 Difference]: With dead ends: 3952 [2018-07-25 13:18:58,203 INFO L226 Difference]: Without dead ends: 3950 [2018-07-25 13:18:58,205 INFO L574 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 [2018-07-25 13:18:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2018-07-25 13:19:00,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3525. [2018-07-25 13:19:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3525 states. [2018-07-25 13:19:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5180 transitions. [2018-07-25 13:19:00,339 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5180 transitions. Word has length 29 [2018-07-25 13:19:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:00,340 INFO L472 AbstractCegarLoop]: Abstraction has 3525 states and 5180 transitions. [2018-07-25 13:19:00,340 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:19:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5180 transitions. [2018-07-25 13:19:00,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:00,342 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:00,342 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:19:00,343 INFO L415 AbstractCegarLoop]: === Iteration 90 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:00,343 INFO L82 PathProgramCache]: Analyzing trace with hash 983131484, now seen corresponding path program 3 times [2018-07-25 13:19:00,343 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:00,359 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:00,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:19:00,359 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:19:00,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:19:00,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:19:00,359 INFO L87 Difference]: Start difference. First operand 3525 states and 5180 transitions. Second operand 11 states. [2018-07-25 13:19:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:02,851 INFO L93 Difference]: Finished difference Result 3893 states and 5708 transitions. [2018-07-25 13:19:02,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:19:02,851 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 13:19:02,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:02,855 INFO L225 Difference]: With dead ends: 3893 [2018-07-25 13:19:02,856 INFO L226 Difference]: Without dead ends: 3891 [2018-07-25 13:19:02,857 INFO L574 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 [2018-07-25 13:19:02,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2018-07-25 13:19:05,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3651. [2018-07-25 13:19:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3651 states. [2018-07-25 13:19:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 5369 transitions. [2018-07-25 13:19:05,018 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 5369 transitions. Word has length 29 [2018-07-25 13:19:05,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:05,019 INFO L472 AbstractCegarLoop]: Abstraction has 3651 states and 5369 transitions. [2018-07-25 13:19:05,019 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:19:05,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 5369 transitions. [2018-07-25 13:19:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:05,021 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:05,021 INFO L354 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] [2018-07-25 13:19:05,021 INFO L415 AbstractCegarLoop]: === Iteration 91 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:05,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1481907752, now seen corresponding path program 1 times [2018-07-25 13:19:05,022 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:19:05,035 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:05,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:19:05,035 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:19:05,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:19:05,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:19:05,036 INFO L87 Difference]: Start difference. First operand 3651 states and 5369 transitions. Second operand 11 states. [2018-07-25 13:19:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:08,271 INFO L93 Difference]: Finished difference Result 4812 states and 7078 transitions. [2018-07-25 13:19:08,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:19:08,271 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 13:19:08,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:08,277 INFO L225 Difference]: With dead ends: 4812 [2018-07-25 13:19:08,277 INFO L226 Difference]: Without dead ends: 4810 [2018-07-25 13:19:08,279 INFO L574 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 [2018-07-25 13:19:08,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2018-07-25 13:19:10,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4121. [2018-07-25 13:19:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4121 states. [2018-07-25 13:19:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 6087 transitions. [2018-07-25 13:19:10,684 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 6087 transitions. Word has length 29 [2018-07-25 13:19:10,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:10,685 INFO L472 AbstractCegarLoop]: Abstraction has 4121 states and 6087 transitions. [2018-07-25 13:19:10,685 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:19:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 6087 transitions. [2018-07-25 13:19:10,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:10,687 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:10,687 INFO L354 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] [2018-07-25 13:19:10,688 INFO L415 AbstractCegarLoop]: === Iteration 92 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:10,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1420688361, now seen corresponding path program 1 times [2018-07-25 13:19:10,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:19:10,702 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:10,702 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:19:10,702 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:19:10,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:19:10,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:19:10,702 INFO L87 Difference]: Start difference. First operand 4121 states and 6087 transitions. Second operand 11 states. [2018-07-25 13:19:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:14,164 INFO L93 Difference]: Finished difference Result 4922 states and 7248 transitions. [2018-07-25 13:19:14,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:19:14,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 13:19:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:14,170 INFO L225 Difference]: With dead ends: 4922 [2018-07-25 13:19:14,170 INFO L226 Difference]: Without dead ends: 4920 [2018-07-25 13:19:14,171 INFO L574 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 [2018-07-25 13:19:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2018-07-25 13:19:16,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4061. [2018-07-25 13:19:16,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4061 states. [2018-07-25 13:19:16,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 5988 transitions. [2018-07-25 13:19:16,553 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 5988 transitions. Word has length 29 [2018-07-25 13:19:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:16,553 INFO L472 AbstractCegarLoop]: Abstraction has 4061 states and 5988 transitions. [2018-07-25 13:19:16,553 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:19:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 5988 transitions. [2018-07-25 13:19:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:16,556 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:16,556 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:19:16,556 INFO L415 AbstractCegarLoop]: === Iteration 93 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:16,556 INFO L82 PathProgramCache]: Analyzing trace with hash -474699493, now seen corresponding path program 4 times [2018-07-25 13:19:16,556 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-25 13:19:16,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:16,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:19:16,573 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:19:16,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:19:16,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:19:16,573 INFO L87 Difference]: Start difference. First operand 4061 states and 5988 transitions. Second operand 12 states. [2018-07-25 13:19:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:19,374 INFO L93 Difference]: Finished difference Result 4233 states and 6241 transitions. [2018-07-25 13:19:19,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 13:19:19,374 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-25 13:19:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:19,379 INFO L225 Difference]: With dead ends: 4233 [2018-07-25 13:19:19,379 INFO L226 Difference]: Without dead ends: 4232 [2018-07-25 13:19:19,380 INFO L574 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 [2018-07-25 13:19:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2018-07-25 13:19:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 3882. [2018-07-25 13:19:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3882 states. [2018-07-25 13:19:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5730 transitions. [2018-07-25 13:19:21,718 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5730 transitions. Word has length 29 [2018-07-25 13:19:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:21,718 INFO L472 AbstractCegarLoop]: Abstraction has 3882 states and 5730 transitions. [2018-07-25 13:19:21,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:19:21,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5730 transitions. [2018-07-25 13:19:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:21,721 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:21,721 INFO L354 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] [2018-07-25 13:19:21,722 INFO L415 AbstractCegarLoop]: === Iteration 94 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:21,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2006031348, now seen corresponding path program 1 times [2018-07-25 13:19:21,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-25 13:19:21,738 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:21,739 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:19:21,739 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:19:21,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:19:21,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:19:21,739 INFO L87 Difference]: Start difference. First operand 3882 states and 5730 transitions. Second operand 11 states. [2018-07-25 13:19:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:24,741 INFO L93 Difference]: Finished difference Result 4266 states and 6268 transitions. [2018-07-25 13:19:24,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 13:19:24,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 13:19:24,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:24,746 INFO L225 Difference]: With dead ends: 4266 [2018-07-25 13:19:24,746 INFO L226 Difference]: Without dead ends: 4264 [2018-07-25 13:19:24,747 INFO L574 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 [2018-07-25 13:19:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2018-07-25 13:19:26,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 3417. [2018-07-25 13:19:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3417 states. [2018-07-25 13:19:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 5047 transitions. [2018-07-25 13:19:26,914 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 5047 transitions. Word has length 29 [2018-07-25 13:19:26,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:26,914 INFO L472 AbstractCegarLoop]: Abstraction has 3417 states and 5047 transitions. [2018-07-25 13:19:26,914 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:19:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 5047 transitions. [2018-07-25 13:19:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:26,916 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:26,916 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:19:26,917 INFO L415 AbstractCegarLoop]: === Iteration 95 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:26,917 INFO L82 PathProgramCache]: Analyzing trace with hash -478637664, now seen corresponding path program 2 times [2018-07-25 13:19:26,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 13:19:26,939 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:26,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:19:26,940 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:19:26,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:19:26,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:19:26,940 INFO L87 Difference]: Start difference. First operand 3417 states and 5047 transitions. Second operand 12 states. [2018-07-25 13:19:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:30,333 INFO L93 Difference]: Finished difference Result 4483 states and 6607 transitions. [2018-07-25 13:19:30,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:19:30,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-25 13:19:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:30,339 INFO L225 Difference]: With dead ends: 4483 [2018-07-25 13:19:30,339 INFO L226 Difference]: Without dead ends: 4481 [2018-07-25 13:19:30,340 INFO L574 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 [2018-07-25 13:19:30,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2018-07-25 13:19:32,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 3901. [2018-07-25 13:19:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3901 states. [2018-07-25 13:19:32,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 5762 transitions. [2018-07-25 13:19:32,834 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 5762 transitions. Word has length 29 [2018-07-25 13:19:32,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:32,834 INFO L472 AbstractCegarLoop]: Abstraction has 3901 states and 5762 transitions. [2018-07-25 13:19:32,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:19:32,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 5762 transitions. [2018-07-25 13:19:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:32,837 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:32,837 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:19:32,837 INFO L415 AbstractCegarLoop]: === Iteration 96 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:32,838 INFO L82 PathProgramCache]: Analyzing trace with hash -478638048, now seen corresponding path program 4 times [2018-07-25 13:19:32,838 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:32,851 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:32,851 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:19:32,851 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:19:32,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:19:32,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:19:32,852 INFO L87 Difference]: Start difference. First operand 3901 states and 5762 transitions. Second operand 11 states. [2018-07-25 13:19:36,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:36,230 INFO L93 Difference]: Finished difference Result 4463 states and 6547 transitions. [2018-07-25 13:19:36,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 13:19:36,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 13:19:36,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:36,236 INFO L225 Difference]: With dead ends: 4463 [2018-07-25 13:19:36,236 INFO L226 Difference]: Without dead ends: 4461 [2018-07-25 13:19:36,237 INFO L574 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 [2018-07-25 13:19:36,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2018-07-25 13:19:38,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 3965. [2018-07-25 13:19:38,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3965 states. [2018-07-25 13:19:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5852 transitions. [2018-07-25 13:19:38,813 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5852 transitions. Word has length 29 [2018-07-25 13:19:38,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:38,813 INFO L472 AbstractCegarLoop]: Abstraction has 3965 states and 5852 transitions. [2018-07-25 13:19:38,813 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 13:19:38,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5852 transitions. [2018-07-25 13:19:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:38,816 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:38,816 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:19:38,816 INFO L415 AbstractCegarLoop]: === Iteration 97 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:38,816 INFO L82 PathProgramCache]: Analyzing trace with hash 570846522, now seen corresponding path program 1 times [2018-07-25 13:19:38,816 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:38,833 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:38,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:19:38,833 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 13:19:38,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 13:19:38,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:19:38,833 INFO L87 Difference]: Start difference. First operand 3965 states and 5852 transitions. Second operand 13 states. [2018-07-25 13:19:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:42,784 INFO L93 Difference]: Finished difference Result 5093 states and 7513 transitions. [2018-07-25 13:19:42,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 13:19:42,784 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2018-07-25 13:19:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:42,792 INFO L225 Difference]: With dead ends: 5093 [2018-07-25 13:19:42,792 INFO L226 Difference]: Without dead ends: 5091 [2018-07-25 13:19:42,794 INFO L574 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 [2018-07-25 13:19:42,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2018-07-25 13:19:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 4401. [2018-07-25 13:19:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4401 states. [2018-07-25 13:19:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 6510 transitions. [2018-07-25 13:19:45,642 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 6510 transitions. Word has length 29 [2018-07-25 13:19:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:45,642 INFO L472 AbstractCegarLoop]: Abstraction has 4401 states and 6510 transitions. [2018-07-25 13:19:45,642 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 13:19:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 6510 transitions. [2018-07-25 13:19:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:45,647 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:45,647 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:19:45,647 INFO L415 AbstractCegarLoop]: === Iteration 98 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:45,647 INFO L82 PathProgramCache]: Analyzing trace with hash -540945094, now seen corresponding path program 2 times [2018-07-25 13:19:45,647 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:45,670 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:45,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:19:45,670 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:19:45,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:19:45,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:19:45,671 INFO L87 Difference]: Start difference. First operand 4401 states and 6510 transitions. Second operand 10 states. [2018-07-25 13:19:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:48,999 INFO L93 Difference]: Finished difference Result 4721 states and 6944 transitions. [2018-07-25 13:19:49,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 13:19:49,000 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-25 13:19:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:49,006 INFO L225 Difference]: With dead ends: 4721 [2018-07-25 13:19:49,006 INFO L226 Difference]: Without dead ends: 4719 [2018-07-25 13:19:49,007 INFO L574 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 [2018-07-25 13:19:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4719 states. [2018-07-25 13:19:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4719 to 4507. [2018-07-25 13:19:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4507 states. [2018-07-25 13:19:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4507 states to 4507 states and 6661 transitions. [2018-07-25 13:19:51,936 INFO L78 Accepts]: Start accepts. Automaton has 4507 states and 6661 transitions. Word has length 29 [2018-07-25 13:19:51,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:51,936 INFO L472 AbstractCegarLoop]: Abstraction has 4507 states and 6661 transitions. [2018-07-25 13:19:51,937 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:19:51,937 INFO L276 IsEmpty]: Start isEmpty. Operand 4507 states and 6661 transitions. [2018-07-25 13:19:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:51,940 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:51,940 INFO L354 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] [2018-07-25 13:19:51,940 INFO L415 AbstractCegarLoop]: === Iteration 99 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:51,940 INFO L82 PathProgramCache]: Analyzing trace with hash 172278311, now seen corresponding path program 2 times [2018-07-25 13:19:51,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-25 13:19:51,955 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:51,955 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 13:19:51,956 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 13:19:51,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 13:19:51,956 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:19:51,956 INFO L87 Difference]: Start difference. First operand 4507 states and 6661 transitions. Second operand 9 states. [2018-07-25 13:19:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:19:55,058 INFO L93 Difference]: Finished difference Result 4725 states and 6951 transitions. [2018-07-25 13:19:55,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:19:55,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-07-25 13:19:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:19:55,065 INFO L225 Difference]: With dead ends: 4725 [2018-07-25 13:19:55,065 INFO L226 Difference]: Without dead ends: 4723 [2018-07-25 13:19:55,067 INFO L574 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 [2018-07-25 13:19:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2018-07-25 13:19:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4504. [2018-07-25 13:19:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4504 states. [2018-07-25 13:19:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 6658 transitions. [2018-07-25 13:19:58,013 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 6658 transitions. Word has length 29 [2018-07-25 13:19:58,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:19:58,013 INFO L472 AbstractCegarLoop]: Abstraction has 4504 states and 6658 transitions. [2018-07-25 13:19:58,013 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 13:19:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 6658 transitions. [2018-07-25 13:19:58,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:19:58,016 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:19:58,016 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:19:58,016 INFO L415 AbstractCegarLoop]: === Iteration 100 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:19:58,016 INFO L82 PathProgramCache]: Analyzing trace with hash -182803664, now seen corresponding path program 1 times [2018-07-25 13:19:58,016 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:19:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:19:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:19:58,030 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:19:58,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 13:19:58,030 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 13:19:58,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 13:19:58,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:19:58,030 INFO L87 Difference]: Start difference. First operand 4504 states and 6658 transitions. Second operand 10 states. [2018-07-25 13:20:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:01,407 INFO L93 Difference]: Finished difference Result 4778 states and 7053 transitions. [2018-07-25 13:20:01,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 13:20:01,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-25 13:20:01,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:01,415 INFO L225 Difference]: With dead ends: 4778 [2018-07-25 13:20:01,415 INFO L226 Difference]: Without dead ends: 4776 [2018-07-25 13:20:01,417 INFO L574 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 [2018-07-25 13:20:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2018-07-25 13:20:04,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 4516. [2018-07-25 13:20:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4516 states. [2018-07-25 13:20:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 6674 transitions. [2018-07-25 13:20:04,445 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 6674 transitions. Word has length 29 [2018-07-25 13:20:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:04,446 INFO L472 AbstractCegarLoop]: Abstraction has 4516 states and 6674 transitions. [2018-07-25 13:20:04,446 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 13:20:04,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 6674 transitions. [2018-07-25 13:20:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:20:04,449 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:04,449 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:20:04,449 INFO L415 AbstractCegarLoop]: === Iteration 101 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:04,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1089104597, now seen corresponding path program 3 times [2018-07-25 13:20:04,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:04,472 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:04,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 13:20:04,473 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 13:20:04,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 13:20:04,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:20:04,473 INFO L87 Difference]: Start difference. First operand 4516 states and 6674 transitions. Second operand 12 states. [2018-07-25 13:20:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:20:07,862 INFO L93 Difference]: Finished difference Result 4905 states and 7210 transitions. [2018-07-25 13:20:07,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 13:20:07,862 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-25 13:20:07,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:20:07,870 INFO L225 Difference]: With dead ends: 4905 [2018-07-25 13:20:07,870 INFO L226 Difference]: Without dead ends: 4903 [2018-07-25 13:20:07,872 INFO L574 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 [2018-07-25 13:20:07,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2018-07-25 13:20:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4651. [2018-07-25 13:20:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2018-07-25 13:20:11,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 6875 transitions. [2018-07-25 13:20:11,028 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 6875 transitions. Word has length 29 [2018-07-25 13:20:11,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:20:11,028 INFO L472 AbstractCegarLoop]: Abstraction has 4651 states and 6875 transitions. [2018-07-25 13:20:11,028 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 13:20:11,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 6875 transitions. [2018-07-25 13:20:11,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 13:20:11,031 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:20:11,031 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:20:11,031 INFO L415 AbstractCegarLoop]: === Iteration 102 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:20:11,032 INFO L82 PathProgramCache]: Analyzing trace with hash -730963167, now seen corresponding path program 1 times [2018-07-25 13:20:11,032 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:20:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:20:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:20:11,051 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:20:11,051 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 13:20:11,052 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 13:20:11,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 13:20:11,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:20:11,052 INFO L87 Difference]: Start difference. First operand 4651 states and 6875 transitions. Second operand 11 states. Received shutdown request... [2018-07-25 13:20:14,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 13:20:14,842 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:20:14,849 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:20:14,850 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:20:14 BoogieIcfgContainer [2018-07-25 13:20:14,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:20:14,851 INFO L168 Benchmark]: Toolchain (without parser) took 254940.85 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 2.4 GB in the end (delta: -931.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-25 13:20:14,854 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:20:14,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:20:14,854 INFO L168 Benchmark]: Boogie Preprocessor took 22.78 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:20:14,855 INFO L168 Benchmark]: RCFGBuilder took 277.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:20:14,855 INFO L168 Benchmark]: TraceAbstraction took 254595.30 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 2.4 GB in the end (delta: -942.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-25 13:20:14,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.78 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 277.23 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 254595.30 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 2.4 GB in the end (delta: -942.5 MB). Peak memory consumption was 1.1 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 BasicCegarLoop was constructing difference of abstraction (4651states) and interpolant automaton (currently 16 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (4842 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 99). Cancelled while BasicCegarLoop was constructing difference of abstraction (4651states) and interpolant automaton (currently 16 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (4842 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 121). Cancelled while BasicCegarLoop was constructing difference of abstraction (4651states) and interpolant automaton (currently 16 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (4842 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 112). Cancelled while BasicCegarLoop was constructing difference of abstraction (4651states) and interpolant automaton (currently 16 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (4842 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 4 error locations. TIMEOUT Result, 254.5s OverallTime, 102 OverallIterations, 3 TraceHistogramMax, 142.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6505 SDtfs, 12379 SDslu, 9745 SDs, 0 SdLazy, 42497 SolverSat, 11215 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2522 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 1978 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8715 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4651occurred in iteration=101, 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: 108.6s AutomataMinimizationTime, 101 MinimizatonAttempts, 23828 StatesRemovedByMinimization, 99 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 2190 NumberOfCodeBlocks, 2190 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 2088 ConstructedInterpolants, 0 QuantifiedInterpolants, 205454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 102 InterpolantComputations, 5 PerfectInterpolantSequences, 72/806 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_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-20-14-869.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product_WithProcedures.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-20-14-869.csv Completed graceful shutdown