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 08:36:40,882 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:36:40,884 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:36:40,899 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:36:40,899 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:36:40,900 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:36:40,902 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:36:40,903 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:36:40,905 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:36:40,906 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:36:40,907 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:36:40,907 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:36:40,908 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:36:40,909 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:36:40,910 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:36:40,911 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:36:40,912 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:36:40,914 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:36:40,916 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:36:40,917 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:36:40,919 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:36:40,920 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:36:40,923 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:36:40,923 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:36:40,923 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:36:40,924 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:36:40,925 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:36:40,926 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:36:40,927 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:36:40,928 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:36:40,928 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:36:40,929 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 08:36:40,929 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 08:36:40,930 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 08:36:40,931 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 08:36:40,931 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 08:36:40,932 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:36:40,946 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:36:40,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:36:40,948 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:36:40,948 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:36:40,949 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:36:40,949 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:36:40,949 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:36:40,949 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:36:40,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:36:41,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:36:41,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:36:41,023 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:36:41,024 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:36:41,025 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl [2018-07-25 08:36:41,025 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl' [2018-07-25 08:36:41,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:36:41,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:36:41,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:36:41,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:36:41,102 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:36:41,121 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 08:36:41" (1/1) ... [2018-07-25 08:36:41,135 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 08:36:41" (1/1) ... [2018-07-25 08:36:41,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:36:41,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:36:41,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:36:41,145 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:36:41,154 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 08:36:41" (1/1) ... [2018-07-25 08:36:41,155 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 08:36:41" (1/1) ... [2018-07-25 08:36:41,156 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 08:36:41" (1/1) ... [2018-07-25 08:36:41,156 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 08:36:41" (1/1) ... [2018-07-25 08:36:41,161 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 08:36:41" (1/1) ... [2018-07-25 08:36:41,164 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 08:36:41" (1/1) ... [2018-07-25 08:36:41,165 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 08:36:41" (1/1) ... [2018-07-25 08:36:41,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:36:41,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:36:41,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:36:41,168 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:36:41,169 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 08:36:41" (1/1) ... [2018-07-25 08:36:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure l1l0 [2018-07-25 08:36:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure l1l0 [2018-07-25 08:36:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure l0l1 [2018-07-25 08:36:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure l0l1 [2018-07-25 08:36:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure l0l0 [2018-07-25 08:36:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure l0l0 [2018-07-25 08:36:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:36:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:36:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure l1l1 [2018-07-25 08:36:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure l1l1 [2018-07-25 08:36:41,432 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:36:41,432 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:36:41 BoogieIcfgContainer [2018-07-25 08:36:41,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:36:41,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:36:41,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:36:41,438 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:36:41,438 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 08:36:41" (1/2) ... [2018-07-25 08:36:41,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7588c47d and model type threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:36:41, skipping insertion in model container [2018-07-25 08:36:41,440 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 08:36:41" (2/2) ... [2018-07-25 08:36:41,442 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product_WithProcedures.bpl [2018-07-25 08:36:41,452 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:36:41,461 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-07-25 08:36:41,511 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:36:41,512 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:36:41,512 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:36:41,512 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:36:41,513 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:36:41,513 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:36:41,513 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:36:41,513 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:36:41,514 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:36:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-07-25 08:36:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:36:41,546 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:41,548 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:41,549 INFO L415 AbstractCegarLoop]: === Iteration 1 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:41,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1282157605, now seen corresponding path program 1 times [2018-07-25 08:36:41,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:41,736 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:41,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:36:41,741 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:36:41,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:36:41,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:36:41,760 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2018-07-25 08:36:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:42,070 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2018-07-25 08:36:42,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:36:42,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-25 08:36:42,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:42,084 INFO L225 Difference]: With dead ends: 72 [2018-07-25 08:36:42,085 INFO L226 Difference]: Without dead ends: 70 [2018-07-25 08:36:42,089 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 08:36:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-07-25 08:36:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2018-07-25 08:36:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-25 08:36:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2018-07-25 08:36:42,171 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 7 [2018-07-25 08:36:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:42,172 INFO L472 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2018-07-25 08:36:42,172 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:36:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2018-07-25 08:36:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:36:42,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:42,175 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:42,176 INFO L415 AbstractCegarLoop]: === Iteration 2 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:42,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1272619553, now seen corresponding path program 1 times [2018-07-25 08:36:42,177 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:42,214 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:42,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:36:42,216 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:36:42,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:36:42,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:36:42,218 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2018-07-25 08:36:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:42,395 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2018-07-25 08:36:42,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:36:42,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-25 08:36:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:42,397 INFO L225 Difference]: With dead ends: 81 [2018-07-25 08:36:42,398 INFO L226 Difference]: Without dead ends: 79 [2018-07-25 08:36:42,399 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 08:36:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-07-25 08:36:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 57. [2018-07-25 08:36:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-25 08:36:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2018-07-25 08:36:42,415 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 7 [2018-07-25 08:36:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:42,416 INFO L472 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2018-07-25 08:36:42,416 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:36:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2018-07-25 08:36:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:36:42,417 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:42,418 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:42,418 INFO L415 AbstractCegarLoop]: === Iteration 3 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:42,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1601446133, now seen corresponding path program 1 times [2018-07-25 08:36:42,419 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:42,513 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:42,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 08:36:42,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:36:42,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:36:42,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:42,515 INFO L87 Difference]: Start difference. First operand 57 states and 78 transitions. Second operand 7 states. [2018-07-25 08:36:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:42,834 INFO L93 Difference]: Finished difference Result 122 states and 175 transitions. [2018-07-25 08:36:42,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:36:42,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-25 08:36:42,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:42,847 INFO L225 Difference]: With dead ends: 122 [2018-07-25 08:36:42,848 INFO L226 Difference]: Without dead ends: 120 [2018-07-25 08:36:42,851 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 08:36:42,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-07-25 08:36:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 73. [2018-07-25 08:36:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-07-25 08:36:42,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2018-07-25 08:36:42,898 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 103 transitions. Word has length 10 [2018-07-25 08:36:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:42,903 INFO L472 AbstractCegarLoop]: Abstraction has 73 states and 103 transitions. [2018-07-25 08:36:42,903 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:36:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 103 transitions. [2018-07-25 08:36:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 08:36:42,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:42,905 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:42,907 INFO L415 AbstractCegarLoop]: === Iteration 4 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:42,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1152651256, now seen corresponding path program 1 times [2018-07-25 08:36:42,908 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:42,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:42,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:36:42,962 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:36:42,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:36:42,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:42,964 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. Second operand 7 states. [2018-07-25 08:36:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:43,113 INFO L93 Difference]: Finished difference Result 143 states and 208 transitions. [2018-07-25 08:36:43,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:36:43,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-07-25 08:36:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:43,116 INFO L225 Difference]: With dead ends: 143 [2018-07-25 08:36:43,116 INFO L226 Difference]: Without dead ends: 141 [2018-07-25 08:36:43,117 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 08:36:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-07-25 08:36:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 85. [2018-07-25 08:36:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-07-25 08:36:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 122 transitions. [2018-07-25 08:36:43,137 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 122 transitions. Word has length 10 [2018-07-25 08:36:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:43,138 INFO L472 AbstractCegarLoop]: Abstraction has 85 states and 122 transitions. [2018-07-25 08:36:43,138 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:36:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 122 transitions. [2018-07-25 08:36:43,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:36:43,140 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:43,140 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:43,141 INFO L415 AbstractCegarLoop]: === Iteration 5 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:43,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1536370777, now seen corresponding path program 1 times [2018-07-25 08:36:43,141 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:43,165 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:43,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:36:43,166 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:36:43,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:36:43,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:36:43,167 INFO L87 Difference]: Start difference. First operand 85 states and 122 transitions. Second operand 6 states. [2018-07-25 08:36:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:43,289 INFO L93 Difference]: Finished difference Result 152 states and 223 transitions. [2018-07-25 08:36:43,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:36:43,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-07-25 08:36:43,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:43,291 INFO L225 Difference]: With dead ends: 152 [2018-07-25 08:36:43,291 INFO L226 Difference]: Without dead ends: 150 [2018-07-25 08:36:43,292 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 08:36:43,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-07-25 08:36:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 96. [2018-07-25 08:36:43,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-07-25 08:36:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2018-07-25 08:36:43,332 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 138 transitions. Word has length 11 [2018-07-25 08:36:43,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:43,335 INFO L472 AbstractCegarLoop]: Abstraction has 96 states and 138 transitions. [2018-07-25 08:36:43,335 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:36:43,335 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 138 transitions. [2018-07-25 08:36:43,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-25 08:36:43,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:43,340 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:43,341 INFO L415 AbstractCegarLoop]: === Iteration 6 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:43,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1150793287, now seen corresponding path program 1 times [2018-07-25 08:36:43,341 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:43,366 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:43,367 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:36:43,367 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:36:43,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:36:43,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:36:43,368 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. Second operand 6 states. [2018-07-25 08:36:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:43,483 INFO L93 Difference]: Finished difference Result 167 states and 245 transitions. [2018-07-25 08:36:43,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:36:43,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-07-25 08:36:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:43,486 INFO L225 Difference]: With dead ends: 167 [2018-07-25 08:36:43,486 INFO L226 Difference]: Without dead ends: 165 [2018-07-25 08:36:43,487 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 08:36:43,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-07-25 08:36:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 106. [2018-07-25 08:36:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-07-25 08:36:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 152 transitions. [2018-07-25 08:36:43,528 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 152 transitions. Word has length 11 [2018-07-25 08:36:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:43,531 INFO L472 AbstractCegarLoop]: Abstraction has 106 states and 152 transitions. [2018-07-25 08:36:43,532 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:36:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 152 transitions. [2018-07-25 08:36:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:36:43,538 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:43,538 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:43,539 INFO L415 AbstractCegarLoop]: === Iteration 7 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1829652612, now seen corresponding path program 1 times [2018-07-25 08:36:43,539 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:43,595 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:43,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:36:43,596 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:36:43,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:36:43,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:43,597 INFO L87 Difference]: Start difference. First operand 106 states and 152 transitions. Second operand 7 states. [2018-07-25 08:36:43,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:43,866 INFO L93 Difference]: Finished difference Result 241 states and 352 transitions. [2018-07-25 08:36:43,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:36:43,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-07-25 08:36:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:43,870 INFO L225 Difference]: With dead ends: 241 [2018-07-25 08:36:43,870 INFO L226 Difference]: Without dead ends: 239 [2018-07-25 08:36:43,871 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 08:36:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-07-25 08:36:43,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 151. [2018-07-25 08:36:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-07-25 08:36:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 221 transitions. [2018-07-25 08:36:43,933 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 221 transitions. Word has length 13 [2018-07-25 08:36:43,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:43,936 INFO L472 AbstractCegarLoop]: Abstraction has 151 states and 221 transitions. [2018-07-25 08:36:43,936 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:36:43,937 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 221 transitions. [2018-07-25 08:36:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:36:43,942 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:43,943 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:43,944 INFO L415 AbstractCegarLoop]: === Iteration 8 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:43,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1159232837, now seen corresponding path program 2 times [2018-07-25 08:36:43,945 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:43,998 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 08:36:43,998 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:43,998 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:43,999 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:43,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:43,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:44,000 INFO L87 Difference]: Start difference. First operand 151 states and 221 transitions. Second operand 8 states. [2018-07-25 08:36:44,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:44,308 INFO L93 Difference]: Finished difference Result 285 states and 419 transitions. [2018-07-25 08:36:44,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:36:44,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-07-25 08:36:44,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:44,312 INFO L225 Difference]: With dead ends: 285 [2018-07-25 08:36:44,312 INFO L226 Difference]: Without dead ends: 283 [2018-07-25 08:36:44,313 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 08:36:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-07-25 08:36:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 198. [2018-07-25 08:36:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-25 08:36:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 292 transitions. [2018-07-25 08:36:44,372 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 292 transitions. Word has length 13 [2018-07-25 08:36:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:44,372 INFO L472 AbstractCegarLoop]: Abstraction has 198 states and 292 transitions. [2018-07-25 08:36:44,372 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 292 transitions. [2018-07-25 08:36:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:36:44,374 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:44,374 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:44,378 INFO L415 AbstractCegarLoop]: === Iteration 9 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:44,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1433054771, now seen corresponding path program 1 times [2018-07-25 08:36:44,379 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:44,402 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 08:36:44,403 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:44,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:36:44,403 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:36:44,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:36:44,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:44,404 INFO L87 Difference]: Start difference. First operand 198 states and 292 transitions. Second operand 7 states. [2018-07-25 08:36:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:44,638 INFO L93 Difference]: Finished difference Result 374 states and 561 transitions. [2018-07-25 08:36:44,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:36:44,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-07-25 08:36:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:44,643 INFO L225 Difference]: With dead ends: 374 [2018-07-25 08:36:44,644 INFO L226 Difference]: Without dead ends: 372 [2018-07-25 08:36:44,645 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 08:36:44,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-07-25 08:36:44,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 242. [2018-07-25 08:36:44,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 08:36:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 361 transitions. [2018-07-25 08:36:44,719 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 361 transitions. Word has length 14 [2018-07-25 08:36:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:44,720 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 361 transitions. [2018-07-25 08:36:44,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:36:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 361 transitions. [2018-07-25 08:36:44,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:36:44,726 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:44,726 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:44,726 INFO L415 AbstractCegarLoop]: === Iteration 10 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:44,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1436992942, now seen corresponding path program 1 times [2018-07-25 08:36:44,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:44,783 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:44,784 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:44,784 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:44,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:44,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:44,785 INFO L87 Difference]: Start difference. First operand 242 states and 361 transitions. Second operand 8 states. [2018-07-25 08:36:45,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:45,092 INFO L93 Difference]: Finished difference Result 367 states and 555 transitions. [2018-07-25 08:36:45,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:36:45,093 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:36:45,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:45,095 INFO L225 Difference]: With dead ends: 367 [2018-07-25 08:36:45,096 INFO L226 Difference]: Without dead ends: 365 [2018-07-25 08:36:45,096 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 08:36:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-07-25 08:36:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 242. [2018-07-25 08:36:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-07-25 08:36:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 361 transitions. [2018-07-25 08:36:45,173 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 361 transitions. Word has length 14 [2018-07-25 08:36:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:45,173 INFO L472 AbstractCegarLoop]: Abstraction has 242 states and 361 transitions. [2018-07-25 08:36:45,173 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 361 transitions. [2018-07-25 08:36:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:36:45,175 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:45,175 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:45,176 INFO L415 AbstractCegarLoop]: === Iteration 11 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:45,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1436993326, now seen corresponding path program 1 times [2018-07-25 08:36:45,176 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:45,208 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 08:36:45,209 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:45,209 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:45,209 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:45,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:45,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:45,211 INFO L87 Difference]: Start difference. First operand 242 states and 361 transitions. Second operand 8 states. [2018-07-25 08:36:45,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:45,535 INFO L93 Difference]: Finished difference Result 408 states and 613 transitions. [2018-07-25 08:36:45,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:36:45,535 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:36:45,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:45,538 INFO L225 Difference]: With dead ends: 408 [2018-07-25 08:36:45,539 INFO L226 Difference]: Without dead ends: 406 [2018-07-25 08:36:45,540 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 08:36:45,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-07-25 08:36:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 274. [2018-07-25 08:36:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-07-25 08:36:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 411 transitions. [2018-07-25 08:36:45,636 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 411 transitions. Word has length 14 [2018-07-25 08:36:45,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:45,636 INFO L472 AbstractCegarLoop]: Abstraction has 274 states and 411 transitions. [2018-07-25 08:36:45,636 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 411 transitions. [2018-07-25 08:36:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:36:45,638 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:45,638 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:45,640 INFO L415 AbstractCegarLoop]: === Iteration 12 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:45,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1791986342, now seen corresponding path program 1 times [2018-07-25 08:36:45,641 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:45,673 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 08:36:45,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:45,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:45,674 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:45,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:45,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:45,675 INFO L87 Difference]: Start difference. First operand 274 states and 411 transitions. Second operand 8 states. [2018-07-25 08:36:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:46,040 INFO L93 Difference]: Finished difference Result 429 states and 646 transitions. [2018-07-25 08:36:46,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:36:46,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:36:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:46,044 INFO L225 Difference]: With dead ends: 429 [2018-07-25 08:36:46,044 INFO L226 Difference]: Without dead ends: 427 [2018-07-25 08:36:46,045 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 08:36:46,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-07-25 08:36:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 287. [2018-07-25 08:36:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-07-25 08:36:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 429 transitions. [2018-07-25 08:36:46,141 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 429 transitions. Word has length 14 [2018-07-25 08:36:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:46,141 INFO L472 AbstractCegarLoop]: Abstraction has 287 states and 429 transitions. [2018-07-25 08:36:46,141 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 429 transitions. [2018-07-25 08:36:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:36:46,143 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:46,144 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:46,144 INFO L415 AbstractCegarLoop]: === Iteration 13 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:46,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1412559370, now seen corresponding path program 1 times [2018-07-25 08:36:46,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:46,159 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 08:36:46,160 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:46,160 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:36:46,160 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:36:46,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:36:46,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:36:46,161 INFO L87 Difference]: Start difference. First operand 287 states and 429 transitions. Second operand 4 states. [2018-07-25 08:36:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:46,260 INFO L93 Difference]: Finished difference Result 428 states and 641 transitions. [2018-07-25 08:36:46,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:36:46,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-07-25 08:36:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:46,263 INFO L225 Difference]: With dead ends: 428 [2018-07-25 08:36:46,263 INFO L226 Difference]: Without dead ends: 273 [2018-07-25 08:36:46,270 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 08:36:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-07-25 08:36:46,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-07-25 08:36:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-07-25 08:36:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 399 transitions. [2018-07-25 08:36:46,366 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 399 transitions. Word has length 14 [2018-07-25 08:36:46,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:46,366 INFO L472 AbstractCegarLoop]: Abstraction has 273 states and 399 transitions. [2018-07-25 08:36:46,366 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:36:46,367 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 399 transitions. [2018-07-25 08:36:46,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:36:46,369 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:46,370 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:46,370 INFO L415 AbstractCegarLoop]: === Iteration 14 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:46,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1697430606, now seen corresponding path program 1 times [2018-07-25 08:36:46,371 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:46,395 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 08:36:46,395 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:46,396 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:36:46,396 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:36:46,399 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:36:46,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:36:46,400 INFO L87 Difference]: Start difference. First operand 273 states and 399 transitions. Second operand 4 states. [2018-07-25 08:36:46,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:46,486 INFO L93 Difference]: Finished difference Result 399 states and 584 transitions. [2018-07-25 08:36:46,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:36:46,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-07-25 08:36:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:46,490 INFO L225 Difference]: With dead ends: 399 [2018-07-25 08:36:46,490 INFO L226 Difference]: Without dead ends: 225 [2018-07-25 08:36:46,492 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 08:36:46,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-07-25 08:36:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-07-25 08:36:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-07-25 08:36:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 316 transitions. [2018-07-25 08:36:46,554 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 316 transitions. Word has length 14 [2018-07-25 08:36:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:46,554 INFO L472 AbstractCegarLoop]: Abstraction has 225 states and 316 transitions. [2018-07-25 08:36:46,554 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:36:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 316 transitions. [2018-07-25 08:36:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:36:46,555 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:46,555 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:46,556 INFO L415 AbstractCegarLoop]: === Iteration 15 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:46,556 INFO L82 PathProgramCache]: Analyzing trace with hash 844488035, now seen corresponding path program 1 times [2018-07-25 08:36:46,556 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:46,576 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 08:36:46,576 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:46,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:36:46,577 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:36:46,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:36:46,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:46,578 INFO L87 Difference]: Start difference. First operand 225 states and 316 transitions. Second operand 7 states. [2018-07-25 08:36:46,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:46,739 INFO L93 Difference]: Finished difference Result 297 states and 415 transitions. [2018-07-25 08:36:46,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:36:46,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-07-25 08:36:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:46,742 INFO L225 Difference]: With dead ends: 297 [2018-07-25 08:36:46,742 INFO L226 Difference]: Without dead ends: 295 [2018-07-25 08:36:46,743 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 08:36:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-07-25 08:36:46,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 262. [2018-07-25 08:36:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2018-07-25 08:36:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 371 transitions. [2018-07-25 08:36:46,818 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 371 transitions. Word has length 14 [2018-07-25 08:36:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:46,819 INFO L472 AbstractCegarLoop]: Abstraction has 262 states and 371 transitions. [2018-07-25 08:36:46,819 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:36:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 371 transitions. [2018-07-25 08:36:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:36:46,820 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:46,820 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:46,820 INFO L415 AbstractCegarLoop]: === Iteration 16 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:46,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1052420626, now seen corresponding path program 1 times [2018-07-25 08:36:46,821 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:46,841 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 08:36:46,842 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:46,842 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:46,842 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:46,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:46,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:46,843 INFO L87 Difference]: Start difference. First operand 262 states and 371 transitions. Second operand 8 states. [2018-07-25 08:36:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:47,026 INFO L93 Difference]: Finished difference Result 326 states and 461 transitions. [2018-07-25 08:36:47,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:36:47,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:36:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:47,029 INFO L225 Difference]: With dead ends: 326 [2018-07-25 08:36:47,029 INFO L226 Difference]: Without dead ends: 324 [2018-07-25 08:36:47,030 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 08:36:47,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-07-25 08:36:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 301. [2018-07-25 08:36:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-07-25 08:36:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2018-07-25 08:36:47,129 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 14 [2018-07-25 08:36:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:47,129 INFO L472 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2018-07-25 08:36:47,129 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2018-07-25 08:36:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:36:47,130 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:47,130 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:47,131 INFO L415 AbstractCegarLoop]: === Iteration 17 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:47,131 INFO L82 PathProgramCache]: Analyzing trace with hash 697427610, now seen corresponding path program 1 times [2018-07-25 08:36:47,131 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:47,152 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 08:36:47,153 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:47,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:47,153 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:47,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:47,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:47,154 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand 8 states. [2018-07-25 08:36:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:47,339 INFO L93 Difference]: Finished difference Result 319 states and 447 transitions. [2018-07-25 08:36:47,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:36:47,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:36:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:47,342 INFO L225 Difference]: With dead ends: 319 [2018-07-25 08:36:47,342 INFO L226 Difference]: Without dead ends: 317 [2018-07-25 08:36:47,343 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 08:36:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-07-25 08:36:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303. [2018-07-25 08:36:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-07-25 08:36:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 431 transitions. [2018-07-25 08:36:47,442 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 431 transitions. Word has length 14 [2018-07-25 08:36:47,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:47,443 INFO L472 AbstractCegarLoop]: Abstraction has 303 states and 431 transitions. [2018-07-25 08:36:47,443 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:47,443 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 431 transitions. [2018-07-25 08:36:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 08:36:47,444 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:47,444 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:47,445 INFO L415 AbstractCegarLoop]: === Iteration 18 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:47,445 INFO L82 PathProgramCache]: Analyzing trace with hash 697427226, now seen corresponding path program 1 times [2018-07-25 08:36:47,445 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:47,471 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:47,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:47,472 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:47,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:47,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:47,473 INFO L87 Difference]: Start difference. First operand 303 states and 431 transitions. Second operand 8 states. [2018-07-25 08:36:47,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:47,695 INFO L93 Difference]: Finished difference Result 335 states and 474 transitions. [2018-07-25 08:36:47,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:36:47,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-07-25 08:36:47,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:47,698 INFO L225 Difference]: With dead ends: 335 [2018-07-25 08:36:47,698 INFO L226 Difference]: Without dead ends: 333 [2018-07-25 08:36:47,699 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 08:36:47,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-07-25 08:36:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 322. [2018-07-25 08:36:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-07-25 08:36:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 456 transitions. [2018-07-25 08:36:47,814 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 456 transitions. Word has length 14 [2018-07-25 08:36:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:47,815 INFO L472 AbstractCegarLoop]: Abstraction has 322 states and 456 transitions. [2018-07-25 08:36:47,815 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 456 transitions. [2018-07-25 08:36:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:36:47,816 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:47,816 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:47,817 INFO L415 AbstractCegarLoop]: === Iteration 19 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:47,817 INFO L82 PathProgramCache]: Analyzing trace with hash 406900684, now seen corresponding path program 1 times [2018-07-25 08:36:47,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:47,851 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 08:36:47,852 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:47,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:36:47,852 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:36:47,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:36:47,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:36:47,853 INFO L87 Difference]: Start difference. First operand 322 states and 456 transitions. Second operand 10 states. [2018-07-25 08:36:48,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:48,264 INFO L93 Difference]: Finished difference Result 482 states and 683 transitions. [2018-07-25 08:36:48,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:36:48,264 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-25 08:36:48,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:48,269 INFO L225 Difference]: With dead ends: 482 [2018-07-25 08:36:48,269 INFO L226 Difference]: Without dead ends: 480 [2018-07-25 08:36:48,270 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 08:36:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-07-25 08:36:48,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 331. [2018-07-25 08:36:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-07-25 08:36:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 470 transitions. [2018-07-25 08:36:48,414 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 470 transitions. Word has length 17 [2018-07-25 08:36:48,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:48,414 INFO L472 AbstractCegarLoop]: Abstraction has 331 states and 470 transitions. [2018-07-25 08:36:48,414 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:36:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 470 transitions. [2018-07-25 08:36:48,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:36:48,416 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:48,416 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:48,416 INFO L415 AbstractCegarLoop]: === Iteration 20 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:48,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2143481530, now seen corresponding path program 1 times [2018-07-25 08:36:48,417 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:48,461 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 08:36:48,461 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:48,462 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:36:48,462 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:36:48,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:36:48,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:36:48,463 INFO L87 Difference]: Start difference. First operand 331 states and 470 transitions. Second operand 10 states. [2018-07-25 08:36:48,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:48,972 INFO L93 Difference]: Finished difference Result 507 states and 718 transitions. [2018-07-25 08:36:48,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:36:48,973 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-07-25 08:36:48,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:48,976 INFO L225 Difference]: With dead ends: 507 [2018-07-25 08:36:48,976 INFO L226 Difference]: Without dead ends: 505 [2018-07-25 08:36:48,977 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=242, Invalid=570, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:36:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-07-25 08:36:49,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 286. [2018-07-25 08:36:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-07-25 08:36:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 400 transitions. [2018-07-25 08:36:49,111 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 400 transitions. Word has length 17 [2018-07-25 08:36:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:49,111 INFO L472 AbstractCegarLoop]: Abstraction has 286 states and 400 transitions. [2018-07-25 08:36:49,112 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:36:49,112 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 400 transitions. [2018-07-25 08:36:49,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:49,113 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:49,113 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:49,113 INFO L415 AbstractCegarLoop]: === Iteration 21 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash -649882737, now seen corresponding path program 2 times [2018-07-25 08:36:49,114 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:49,136 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:49,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:49,136 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:49,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:49,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:49,137 INFO L87 Difference]: Start difference. First operand 286 states and 400 transitions. Second operand 8 states. [2018-07-25 08:36:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:49,481 INFO L93 Difference]: Finished difference Result 487 states and 698 transitions. [2018-07-25 08:36:49,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:36:49,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:49,485 INFO L225 Difference]: With dead ends: 487 [2018-07-25 08:36:49,485 INFO L226 Difference]: Without dead ends: 485 [2018-07-25 08:36:49,486 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 08:36:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2018-07-25 08:36:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 437. [2018-07-25 08:36:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-07-25 08:36:49,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 636 transitions. [2018-07-25 08:36:49,714 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 636 transitions. Word has length 18 [2018-07-25 08:36:49,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:49,715 INFO L472 AbstractCegarLoop]: Abstraction has 437 states and 636 transitions. [2018-07-25 08:36:49,715 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 636 transitions. [2018-07-25 08:36:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:49,716 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:49,716 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 08:36:49,717 INFO L415 AbstractCegarLoop]: === Iteration 22 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:49,717 INFO L82 PathProgramCache]: Analyzing trace with hash -653820908, now seen corresponding path program 1 times [2018-07-25 08:36:49,717 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:49,755 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 08:36:49,757 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:49,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:49,758 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:49,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:49,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:49,759 INFO L87 Difference]: Start difference. First operand 437 states and 636 transitions. Second operand 8 states. [2018-07-25 08:36:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:50,140 INFO L93 Difference]: Finished difference Result 500 states and 719 transitions. [2018-07-25 08:36:50,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:36:50,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:50,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:50,144 INFO L225 Difference]: With dead ends: 500 [2018-07-25 08:36:50,145 INFO L226 Difference]: Without dead ends: 498 [2018-07-25 08:36:50,145 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 08:36:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2018-07-25 08:36:50,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 421. [2018-07-25 08:36:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-07-25 08:36:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 615 transitions. [2018-07-25 08:36:50,373 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 615 transitions. Word has length 18 [2018-07-25 08:36:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:50,374 INFO L472 AbstractCegarLoop]: Abstraction has 421 states and 615 transitions. [2018-07-25 08:36:50,374 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 615 transitions. [2018-07-25 08:36:50,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:50,375 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:50,375 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 08:36:50,375 INFO L415 AbstractCegarLoop]: === Iteration 23 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:50,376 INFO L82 PathProgramCache]: Analyzing trace with hash -653821292, now seen corresponding path program 1 times [2018-07-25 08:36:50,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:50,400 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:50,400 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:50,400 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:50,401 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:50,401 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:50,401 INFO L87 Difference]: Start difference. First operand 421 states and 615 transitions. Second operand 8 states. [2018-07-25 08:36:50,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:50,760 INFO L93 Difference]: Finished difference Result 535 states and 771 transitions. [2018-07-25 08:36:50,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:36:50,760 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:50,764 INFO L225 Difference]: With dead ends: 535 [2018-07-25 08:36:50,764 INFO L226 Difference]: Without dead ends: 533 [2018-07-25 08:36:50,764 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 08:36:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2018-07-25 08:36:50,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 447. [2018-07-25 08:36:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-07-25 08:36:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 651 transitions. [2018-07-25 08:36:50,998 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 651 transitions. Word has length 18 [2018-07-25 08:36:50,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:50,999 INFO L472 AbstractCegarLoop]: Abstraction has 447 states and 651 transitions. [2018-07-25 08:36:50,999 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 651 transitions. [2018-07-25 08:36:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:51,001 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:51,001 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 08:36:51,002 INFO L415 AbstractCegarLoop]: === Iteration 24 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:51,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1008814308, now seen corresponding path program 1 times [2018-07-25 08:36:51,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:51,025 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:51,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:51,026 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:51,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:51,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:51,027 INFO L87 Difference]: Start difference. First operand 447 states and 651 transitions. Second operand 8 states. [2018-07-25 08:36:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:51,467 INFO L93 Difference]: Finished difference Result 557 states and 803 transitions. [2018-07-25 08:36:51,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:36:51,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:51,471 INFO L225 Difference]: With dead ends: 557 [2018-07-25 08:36:51,471 INFO L226 Difference]: Without dead ends: 555 [2018-07-25 08:36:51,473 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 08:36:51,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2018-07-25 08:36:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 462. [2018-07-25 08:36:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2018-07-25 08:36:51,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 674 transitions. [2018-07-25 08:36:51,766 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 674 transitions. Word has length 18 [2018-07-25 08:36:51,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:51,767 INFO L472 AbstractCegarLoop]: Abstraction has 462 states and 674 transitions. [2018-07-25 08:36:51,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:51,767 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 674 transitions. [2018-07-25 08:36:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:51,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:51,769 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:51,769 INFO L415 AbstractCegarLoop]: === Iteration 25 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:51,769 INFO L82 PathProgramCache]: Analyzing trace with hash 199858329, now seen corresponding path program 2 times [2018-07-25 08:36:51,770 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:51,804 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:51,805 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:51,805 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:51,805 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:51,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:51,806 INFO L87 Difference]: Start difference. First operand 462 states and 674 transitions. Second operand 9 states. [2018-07-25 08:36:52,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:52,303 INFO L93 Difference]: Finished difference Result 562 states and 811 transitions. [2018-07-25 08:36:52,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:36:52,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 08:36:52,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:52,307 INFO L225 Difference]: With dead ends: 562 [2018-07-25 08:36:52,308 INFO L226 Difference]: Without dead ends: 560 [2018-07-25 08:36:52,309 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 08:36:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2018-07-25 08:36:52,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 495. [2018-07-25 08:36:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-07-25 08:36:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 721 transitions. [2018-07-25 08:36:52,593 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 721 transitions. Word has length 18 [2018-07-25 08:36:52,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:52,593 INFO L472 AbstractCegarLoop]: Abstraction has 495 states and 721 transitions. [2018-07-25 08:36:52,593 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:52,593 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 721 transitions. [2018-07-25 08:36:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:52,595 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:52,595 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 08:36:52,595 INFO L415 AbstractCegarLoop]: === Iteration 26 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:52,595 INFO L82 PathProgramCache]: Analyzing trace with hash -155134687, now seen corresponding path program 1 times [2018-07-25 08:36:52,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:52,621 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 08:36:52,622 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:52,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:52,622 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:52,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:52,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:52,623 INFO L87 Difference]: Start difference. First operand 495 states and 721 transitions. Second operand 8 states. [2018-07-25 08:36:53,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:53,019 INFO L93 Difference]: Finished difference Result 542 states and 779 transitions. [2018-07-25 08:36:53,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:36:53,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:53,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:53,023 INFO L225 Difference]: With dead ends: 542 [2018-07-25 08:36:53,023 INFO L226 Difference]: Without dead ends: 540 [2018-07-25 08:36:53,024 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 08:36:53,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2018-07-25 08:36:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 508. [2018-07-25 08:36:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-07-25 08:36:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 738 transitions. [2018-07-25 08:36:53,266 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 738 transitions. Word has length 18 [2018-07-25 08:36:53,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:53,266 INFO L472 AbstractCegarLoop]: Abstraction has 508 states and 738 transitions. [2018-07-25 08:36:53,267 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:53,267 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 738 transitions. [2018-07-25 08:36:53,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:53,268 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:53,268 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 08:36:53,268 INFO L415 AbstractCegarLoop]: === Iteration 27 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:53,269 INFO L82 PathProgramCache]: Analyzing trace with hash -155135071, now seen corresponding path program 1 times [2018-07-25 08:36:53,269 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:53,291 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 08:36:53,291 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:53,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:53,292 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:53,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:53,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:53,293 INFO L87 Difference]: Start difference. First operand 508 states and 738 transitions. Second operand 8 states. [2018-07-25 08:36:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:53,932 INFO L93 Difference]: Finished difference Result 840 states and 1224 transitions. [2018-07-25 08:36:53,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:36:53,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:53,937 INFO L225 Difference]: With dead ends: 840 [2018-07-25 08:36:53,938 INFO L226 Difference]: Without dead ends: 838 [2018-07-25 08:36:53,939 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 08:36:53,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2018-07-25 08:36:54,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 672. [2018-07-25 08:36:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2018-07-25 08:36:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 988 transitions. [2018-07-25 08:36:54,355 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 988 transitions. Word has length 18 [2018-07-25 08:36:54,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:54,356 INFO L472 AbstractCegarLoop]: Abstraction has 672 states and 988 transitions. [2018-07-25 08:36:54,356 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 988 transitions. [2018-07-25 08:36:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:54,357 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:54,358 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 08:36:54,358 INFO L415 AbstractCegarLoop]: === Iteration 28 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:54,358 INFO L82 PathProgramCache]: Analyzing trace with hash -216264415, now seen corresponding path program 2 times [2018-07-25 08:36:54,361 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:54,391 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 08:36:54,392 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:54,392 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:36:54,392 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:54,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:54,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:54,393 INFO L87 Difference]: Start difference. First operand 672 states and 988 transitions. Second operand 8 states. [2018-07-25 08:36:54,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:54,912 INFO L93 Difference]: Finished difference Result 733 states and 1065 transitions. [2018-07-25 08:36:54,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:36:54,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:54,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:54,917 INFO L225 Difference]: With dead ends: 733 [2018-07-25 08:36:54,917 INFO L226 Difference]: Without dead ends: 731 [2018-07-25 08:36:54,918 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 08:36:54,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2018-07-25 08:36:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 646. [2018-07-25 08:36:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2018-07-25 08:36:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 944 transitions. [2018-07-25 08:36:55,357 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 944 transitions. Word has length 18 [2018-07-25 08:36:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:55,358 INFO L472 AbstractCegarLoop]: Abstraction has 646 states and 944 transitions. [2018-07-25 08:36:55,358 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:55,358 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 944 transitions. [2018-07-25 08:36:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:55,360 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:55,360 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 08:36:55,360 INFO L415 AbstractCegarLoop]: === Iteration 29 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash -216264799, now seen corresponding path program 2 times [2018-07-25 08:36:55,361 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:55,401 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 08:36:55,402 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:55,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:55,402 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:55,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:55,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:55,403 INFO L87 Difference]: Start difference. First operand 646 states and 944 transitions. Second operand 8 states. [2018-07-25 08:36:56,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:56,005 INFO L93 Difference]: Finished difference Result 780 states and 1131 transitions. [2018-07-25 08:36:56,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:36:56,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:56,010 INFO L225 Difference]: With dead ends: 780 [2018-07-25 08:36:56,010 INFO L226 Difference]: Without dead ends: 778 [2018-07-25 08:36:56,011 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 08:36:56,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2018-07-25 08:36:56,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 630. [2018-07-25 08:36:56,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2018-07-25 08:36:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 921 transitions. [2018-07-25 08:36:56,279 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 921 transitions. Word has length 18 [2018-07-25 08:36:56,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:56,279 INFO L472 AbstractCegarLoop]: Abstraction has 630 states and 921 transitions. [2018-07-25 08:36:56,280 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:56,280 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 921 transitions. [2018-07-25 08:36:56,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:56,281 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:56,281 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:56,281 INFO L415 AbstractCegarLoop]: === Iteration 30 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:56,282 INFO L82 PathProgramCache]: Analyzing trace with hash -571257815, now seen corresponding path program 2 times [2018-07-25 08:36:56,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:56,307 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:56,307 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:36:56,307 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:56,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:56,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:56,308 INFO L87 Difference]: Start difference. First operand 630 states and 921 transitions. Second operand 9 states. [2018-07-25 08:36:56,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:56,850 INFO L93 Difference]: Finished difference Result 745 states and 1087 transitions. [2018-07-25 08:36:56,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:36:56,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 08:36:56,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:56,854 INFO L225 Difference]: With dead ends: 745 [2018-07-25 08:36:56,855 INFO L226 Difference]: Without dead ends: 744 [2018-07-25 08:36:56,855 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 08:36:56,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-25 08:36:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 624. [2018-07-25 08:36:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2018-07-25 08:36:57,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 910 transitions. [2018-07-25 08:36:57,109 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 910 transitions. Word has length 18 [2018-07-25 08:36:57,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:57,110 INFO L472 AbstractCegarLoop]: Abstraction has 624 states and 910 transitions. [2018-07-25 08:36:57,110 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 910 transitions. [2018-07-25 08:36:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:57,111 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:57,111 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:57,111 INFO L415 AbstractCegarLoop]: === Iteration 31 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:57,112 INFO L82 PathProgramCache]: Analyzing trace with hash -571168152, now seen corresponding path program 1 times [2018-07-25 08:36:57,112 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:57,130 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 08:36:57,131 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:57,131 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:57,131 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:57,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:57,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:57,132 INFO L87 Difference]: Start difference. First operand 624 states and 910 transitions. Second operand 8 states. [2018-07-25 08:36:57,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:57,686 INFO L93 Difference]: Finished difference Result 767 states and 1100 transitions. [2018-07-25 08:36:57,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:36:57,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:57,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:57,690 INFO L225 Difference]: With dead ends: 767 [2018-07-25 08:36:57,691 INFO L226 Difference]: Without dead ends: 765 [2018-07-25 08:36:57,691 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 08:36:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2018-07-25 08:36:58,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 650. [2018-07-25 08:36:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2018-07-25 08:36:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 947 transitions. [2018-07-25 08:36:58,071 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 947 transitions. Word has length 18 [2018-07-25 08:36:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:58,072 INFO L472 AbstractCegarLoop]: Abstraction has 650 states and 947 transitions. [2018-07-25 08:36:58,072 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 947 transitions. [2018-07-25 08:36:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:58,073 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:58,073 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:58,074 INFO L415 AbstractCegarLoop]: === Iteration 32 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:58,074 INFO L82 PathProgramCache]: Analyzing trace with hash 948617211, now seen corresponding path program 2 times [2018-07-25 08:36:58,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:58,094 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:58,094 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:58,095 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:58,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:58,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:58,095 INFO L87 Difference]: Start difference. First operand 650 states and 947 transitions. Second operand 8 states. [2018-07-25 08:36:58,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:58,642 INFO L93 Difference]: Finished difference Result 705 states and 1013 transitions. [2018-07-25 08:36:58,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:36:58,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:58,646 INFO L225 Difference]: With dead ends: 705 [2018-07-25 08:36:58,647 INFO L226 Difference]: Without dead ends: 703 [2018-07-25 08:36:58,648 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 08:36:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2018-07-25 08:36:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 672. [2018-07-25 08:36:59,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2018-07-25 08:36:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 976 transitions. [2018-07-25 08:36:59,047 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 976 transitions. Word has length 18 [2018-07-25 08:36:59,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:59,048 INFO L472 AbstractCegarLoop]: Abstraction has 672 states and 976 transitions. [2018-07-25 08:36:59,048 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 976 transitions. [2018-07-25 08:36:59,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:36:59,049 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:59,050 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 08:36:59,050 INFO L415 AbstractCegarLoop]: === Iteration 33 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:59,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1156549802, now seen corresponding path program 1 times [2018-07-25 08:36:59,052 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:59,089 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:59,089 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:59,089 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:59,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:59,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:59,090 INFO L87 Difference]: Start difference. First operand 672 states and 976 transitions. Second operand 8 states. [2018-07-25 08:36:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:59,625 INFO L93 Difference]: Finished difference Result 766 states and 1106 transitions. [2018-07-25 08:36:59,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:36:59,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:36:59,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:59,629 INFO L225 Difference]: With dead ends: 766 [2018-07-25 08:36:59,629 INFO L226 Difference]: Without dead ends: 764 [2018-07-25 08:36:59,630 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 08:36:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2018-07-25 08:37:00,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 686. [2018-07-25 08:37:00,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-07-25 08:37:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 997 transitions. [2018-07-25 08:37:00,033 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 997 transitions. Word has length 18 [2018-07-25 08:37:00,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:00,034 INFO L472 AbstractCegarLoop]: Abstraction has 686 states and 997 transitions. [2018-07-25 08:37:00,034 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 997 transitions. [2018-07-25 08:37:00,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:37:00,042 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:00,043 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 08:37:00,043 INFO L415 AbstractCegarLoop]: === Iteration 34 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:00,043 INFO L82 PathProgramCache]: Analyzing trace with hash 801556786, now seen corresponding path program 1 times [2018-07-25 08:37:00,044 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:00,065 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:00,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:00,065 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:00,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:00,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:00,067 INFO L87 Difference]: Start difference. First operand 686 states and 997 transitions. Second operand 8 states. [2018-07-25 08:37:00,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:00,596 INFO L93 Difference]: Finished difference Result 781 states and 1129 transitions. [2018-07-25 08:37:00,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:37:00,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:37:00,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:00,602 INFO L225 Difference]: With dead ends: 781 [2018-07-25 08:37:00,602 INFO L226 Difference]: Without dead ends: 779 [2018-07-25 08:37:00,603 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 08:37:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2018-07-25 08:37:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 707. [2018-07-25 08:37:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2018-07-25 08:37:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1026 transitions. [2018-07-25 08:37:00,907 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1026 transitions. Word has length 18 [2018-07-25 08:37:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:00,907 INFO L472 AbstractCegarLoop]: Abstraction has 707 states and 1026 transitions. [2018-07-25 08:37:00,907 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1026 transitions. [2018-07-25 08:37:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:37:00,908 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:00,909 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 08:37:00,909 INFO L415 AbstractCegarLoop]: === Iteration 35 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:00,909 INFO L82 PathProgramCache]: Analyzing trace with hash 801556402, now seen corresponding path program 1 times [2018-07-25 08:37:00,909 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:00,935 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 08:37:00,935 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:00,935 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:37:00,936 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:00,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:00,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:00,936 INFO L87 Difference]: Start difference. First operand 707 states and 1026 transitions. Second operand 8 states. [2018-07-25 08:37:01,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:01,482 INFO L93 Difference]: Finished difference Result 774 states and 1115 transitions. [2018-07-25 08:37:01,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:37:01,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:37:01,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:01,486 INFO L225 Difference]: With dead ends: 774 [2018-07-25 08:37:01,487 INFO L226 Difference]: Without dead ends: 772 [2018-07-25 08:37:01,487 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 08:37:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2018-07-25 08:37:01,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 683. [2018-07-25 08:37:01,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-07-25 08:37:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 993 transitions. [2018-07-25 08:37:01,978 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 993 transitions. Word has length 18 [2018-07-25 08:37:01,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:01,978 INFO L472 AbstractCegarLoop]: Abstraction has 683 states and 993 transitions. [2018-07-25 08:37:01,978 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:01,979 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 993 transitions. [2018-07-25 08:37:01,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:37:01,980 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:01,980 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:01,980 INFO L415 AbstractCegarLoop]: === Iteration 36 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:01,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1011848743, now seen corresponding path program 2 times [2018-07-25 08:37:01,981 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:02,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:02,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:02,010 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:02,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:02,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:02,010 INFO L87 Difference]: Start difference. First operand 683 states and 993 transitions. Second operand 9 states. [2018-07-25 08:37:02,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:02,792 INFO L93 Difference]: Finished difference Result 907 states and 1338 transitions. [2018-07-25 08:37:02,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:37:02,792 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 08:37:02,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:02,797 INFO L225 Difference]: With dead ends: 907 [2018-07-25 08:37:02,797 INFO L226 Difference]: Without dead ends: 906 [2018-07-25 08:37:02,798 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 08:37:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2018-07-25 08:37:03,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 746. [2018-07-25 08:37:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2018-07-25 08:37:03,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1095 transitions. [2018-07-25 08:37:03,208 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1095 transitions. Word has length 18 [2018-07-25 08:37:03,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:03,209 INFO L472 AbstractCegarLoop]: Abstraction has 746 states and 1095 transitions. [2018-07-25 08:37:03,209 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:03,209 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1095 transitions. [2018-07-25 08:37:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:37:03,210 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:03,210 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:03,211 INFO L415 AbstractCegarLoop]: === Iteration 37 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:03,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1011759784, now seen corresponding path program 1 times [2018-07-25 08:37:03,211 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:03,227 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 08:37:03,227 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:03,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:03,228 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:03,228 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:03,228 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:03,228 INFO L87 Difference]: Start difference. First operand 746 states and 1095 transitions. Second operand 8 states. [2018-07-25 08:37:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:03,961 INFO L93 Difference]: Finished difference Result 914 states and 1326 transitions. [2018-07-25 08:37:03,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:37:03,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:37:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:03,967 INFO L225 Difference]: With dead ends: 914 [2018-07-25 08:37:03,967 INFO L226 Difference]: Without dead ends: 912 [2018-07-25 08:37:03,968 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 08:37:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2018-07-25 08:37:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 761. [2018-07-25 08:37:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2018-07-25 08:37:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1117 transitions. [2018-07-25 08:37:04,391 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1117 transitions. Word has length 18 [2018-07-25 08:37:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:04,391 INFO L472 AbstractCegarLoop]: Abstraction has 761 states and 1117 transitions. [2018-07-25 08:37:04,391 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1117 transitions. [2018-07-25 08:37:04,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:37:04,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:04,392 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 08:37:04,393 INFO L415 AbstractCegarLoop]: === Iteration 38 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:04,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1366841759, now seen corresponding path program 1 times [2018-07-25 08:37:04,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:04,410 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 08:37:04,410 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:04,410 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:04,410 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:04,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:04,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:04,411 INFO L87 Difference]: Start difference. First operand 761 states and 1117 transitions. Second operand 8 states. [2018-07-25 08:37:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:05,140 INFO L93 Difference]: Finished difference Result 933 states and 1368 transitions. [2018-07-25 08:37:05,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:37:05,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:37:05,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:05,145 INFO L225 Difference]: With dead ends: 933 [2018-07-25 08:37:05,146 INFO L226 Difference]: Without dead ends: 931 [2018-07-25 08:37:05,146 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 08:37:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2018-07-25 08:37:05,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 781. [2018-07-25 08:37:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2018-07-25 08:37:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1145 transitions. [2018-07-25 08:37:05,588 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1145 transitions. Word has length 18 [2018-07-25 08:37:05,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:05,588 INFO L472 AbstractCegarLoop]: Abstraction has 781 states and 1145 transitions. [2018-07-25 08:37:05,588 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1145 transitions. [2018-07-25 08:37:05,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:37:05,589 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:05,589 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 08:37:05,590 INFO L415 AbstractCegarLoop]: === Iteration 39 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:05,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1366842143, now seen corresponding path program 1 times [2018-07-25 08:37:05,590 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:05,607 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 08:37:05,607 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:05,608 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:37:05,608 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:05,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:05,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:05,608 INFO L87 Difference]: Start difference. First operand 781 states and 1145 transitions. Second operand 8 states. [2018-07-25 08:37:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:06,197 INFO L93 Difference]: Finished difference Result 821 states and 1189 transitions. [2018-07-25 08:37:06,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:37:06,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:37:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:06,202 INFO L225 Difference]: With dead ends: 821 [2018-07-25 08:37:06,202 INFO L226 Difference]: Without dead ends: 819 [2018-07-25 08:37:06,202 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 08:37:06,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-07-25 08:37:06,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 741. [2018-07-25 08:37:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2018-07-25 08:37:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1081 transitions. [2018-07-25 08:37:06,505 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1081 transitions. Word has length 18 [2018-07-25 08:37:06,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:06,505 INFO L472 AbstractCegarLoop]: Abstraction has 741 states and 1081 transitions. [2018-07-25 08:37:06,505 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1081 transitions. [2018-07-25 08:37:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:37:06,506 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:06,506 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 08:37:06,507 INFO L415 AbstractCegarLoop]: === Iteration 40 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:06,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1427971487, now seen corresponding path program 2 times [2018-07-25 08:37:06,507 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:06,523 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 08:37:06,523 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:06,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:06,524 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:06,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:06,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:06,524 INFO L87 Difference]: Start difference. First operand 741 states and 1081 transitions. Second operand 8 states. [2018-07-25 08:37:07,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:07,226 INFO L93 Difference]: Finished difference Result 941 states and 1359 transitions. [2018-07-25 08:37:07,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:37:07,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-07-25 08:37:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:07,231 INFO L225 Difference]: With dead ends: 941 [2018-07-25 08:37:07,231 INFO L226 Difference]: Without dead ends: 939 [2018-07-25 08:37:07,232 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 08:37:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-07-25 08:37:07,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 792. [2018-07-25 08:37:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2018-07-25 08:37:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1155 transitions. [2018-07-25 08:37:07,661 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1155 transitions. Word has length 18 [2018-07-25 08:37:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:07,661 INFO L472 AbstractCegarLoop]: Abstraction has 792 states and 1155 transitions. [2018-07-25 08:37:07,661 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1155 transitions. [2018-07-25 08:37:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-25 08:37:07,662 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:07,662 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:07,663 INFO L415 AbstractCegarLoop]: === Iteration 41 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:07,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1782964887, now seen corresponding path program 2 times [2018-07-25 08:37:07,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:07,680 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:07,680 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:07,680 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:07,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:07,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:07,681 INFO L87 Difference]: Start difference. First operand 792 states and 1155 transitions. Second operand 9 states. [2018-07-25 08:37:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:08,341 INFO L93 Difference]: Finished difference Result 936 states and 1355 transitions. [2018-07-25 08:37:08,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:37:08,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-07-25 08:37:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:08,346 INFO L225 Difference]: With dead ends: 936 [2018-07-25 08:37:08,346 INFO L226 Difference]: Without dead ends: 934 [2018-07-25 08:37:08,347 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 08:37:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2018-07-25 08:37:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 827. [2018-07-25 08:37:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2018-07-25 08:37:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1202 transitions. [2018-07-25 08:37:08,742 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1202 transitions. Word has length 18 [2018-07-25 08:37:08,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:08,743 INFO L472 AbstractCegarLoop]: Abstraction has 827 states and 1202 transitions. [2018-07-25 08:37:08,743 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1202 transitions. [2018-07-25 08:37:08,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:37:08,744 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:08,744 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:08,745 INFO L415 AbstractCegarLoop]: === Iteration 42 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:08,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1622613706, now seen corresponding path program 1 times [2018-07-25 08:37:08,745 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:08,768 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 08:37:08,768 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:08,768 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:37:08,769 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:37:08,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:37:08,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:37:08,769 INFO L87 Difference]: Start difference. First operand 827 states and 1202 transitions. Second operand 12 states. [2018-07-25 08:37:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:09,913 INFO L93 Difference]: Finished difference Result 1574 states and 2302 transitions. [2018-07-25 08:37:09,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:37:09,914 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-25 08:37:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:09,920 INFO L225 Difference]: With dead ends: 1574 [2018-07-25 08:37:09,920 INFO L226 Difference]: Without dead ends: 1572 [2018-07-25 08:37:09,921 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 08:37:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2018-07-25 08:37:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1454. [2018-07-25 08:37:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2018-07-25 08:37:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2142 transitions. [2018-07-25 08:37:10,436 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2142 transitions. Word has length 21 [2018-07-25 08:37:10,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:10,436 INFO L472 AbstractCegarLoop]: Abstraction has 1454 states and 2142 transitions. [2018-07-25 08:37:10,437 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:37:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2142 transitions. [2018-07-25 08:37:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:37:10,438 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:10,439 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:10,439 INFO L415 AbstractCegarLoop]: === Iteration 43 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:10,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1005591262, now seen corresponding path program 1 times [2018-07-25 08:37:10,439 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:10,460 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 08:37:10,460 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:10,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:37:10,460 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:37:10,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:37:10,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:37:10,461 INFO L87 Difference]: Start difference. First operand 1454 states and 2142 transitions. Second operand 12 states. [2018-07-25 08:37:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:11,837 INFO L93 Difference]: Finished difference Result 2649 states and 3932 transitions. [2018-07-25 08:37:11,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:37:11,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-07-25 08:37:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:11,850 INFO L225 Difference]: With dead ends: 2649 [2018-07-25 08:37:11,850 INFO L226 Difference]: Without dead ends: 2647 [2018-07-25 08:37:11,853 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 08:37:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2018-07-25 08:37:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2484. [2018-07-25 08:37:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2484 states. [2018-07-25 08:37:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3704 transitions. [2018-07-25 08:37:12,696 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3704 transitions. Word has length 21 [2018-07-25 08:37:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:12,697 INFO L472 AbstractCegarLoop]: Abstraction has 2484 states and 3704 transitions. [2018-07-25 08:37:12,697 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:37:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3704 transitions. [2018-07-25 08:37:12,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:12,699 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:12,699 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 08:37:12,699 INFO L415 AbstractCegarLoop]: === Iteration 44 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:12,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1621422890, now seen corresponding path program 2 times [2018-07-25 08:37:12,700 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:12,770 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 08:37:12,771 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:12,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:12,771 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:12,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:12,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:12,772 INFO L87 Difference]: Start difference. First operand 2484 states and 3704 transitions. Second operand 9 states. [2018-07-25 08:37:14,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:14,018 INFO L93 Difference]: Finished difference Result 2521 states and 3747 transitions. [2018-07-25 08:37:14,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:37:14,019 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 08:37:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:14,035 INFO L225 Difference]: With dead ends: 2521 [2018-07-25 08:37:14,035 INFO L226 Difference]: Without dead ends: 2520 [2018-07-25 08:37:14,036 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 08:37:14,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2018-07-25 08:37:14,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2484. [2018-07-25 08:37:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2484 states. [2018-07-25 08:37:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3700 transitions. [2018-07-25 08:37:14,831 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3700 transitions. Word has length 22 [2018-07-25 08:37:14,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:14,832 INFO L472 AbstractCegarLoop]: Abstraction has 2484 states and 3700 transitions. [2018-07-25 08:37:14,832 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3700 transitions. [2018-07-25 08:37:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:14,833 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:14,834 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 08:37:14,834 INFO L415 AbstractCegarLoop]: === Iteration 45 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:14,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1982566808, now seen corresponding path program 1 times [2018-07-25 08:37:14,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:14,852 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 08:37:14,852 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:14,852 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:14,854 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:14,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:14,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:14,854 INFO L87 Difference]: Start difference. First operand 2484 states and 3700 transitions. Second operand 9 states. [2018-07-25 08:37:15,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:15,972 INFO L93 Difference]: Finished difference Result 2741 states and 4062 transitions. [2018-07-25 08:37:15,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:37:15,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 08:37:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:15,979 INFO L225 Difference]: With dead ends: 2741 [2018-07-25 08:37:15,979 INFO L226 Difference]: Without dead ends: 2739 [2018-07-25 08:37:15,980 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 08:37:15,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2018-07-25 08:37:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2594. [2018-07-25 08:37:16,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2018-07-25 08:37:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3858 transitions. [2018-07-25 08:37:16,853 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3858 transitions. Word has length 22 [2018-07-25 08:37:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:16,853 INFO L472 AbstractCegarLoop]: Abstraction has 2594 states and 3858 transitions. [2018-07-25 08:37:16,853 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3858 transitions. [2018-07-25 08:37:16,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:16,855 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:16,856 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 08:37:16,856 INFO L415 AbstractCegarLoop]: === Iteration 46 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:16,856 INFO L82 PathProgramCache]: Analyzing trace with hash -767743653, now seen corresponding path program 2 times [2018-07-25 08:37:16,856 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:16,875 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 08:37:16,876 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:16,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:16,876 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:37:16,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:37:16,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:37:16,877 INFO L87 Difference]: Start difference. First operand 2594 states and 3858 transitions. Second operand 10 states. [2018-07-25 08:37:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:18,724 INFO L93 Difference]: Finished difference Result 3321 states and 4947 transitions. [2018-07-25 08:37:18,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:37:18,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-25 08:37:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:18,734 INFO L225 Difference]: With dead ends: 3321 [2018-07-25 08:37:18,734 INFO L226 Difference]: Without dead ends: 3319 [2018-07-25 08:37:18,737 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 08:37:18,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2018-07-25 08:37:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2735. [2018-07-25 08:37:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2735 states. [2018-07-25 08:37:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4072 transitions. [2018-07-25 08:37:19,733 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4072 transitions. Word has length 22 [2018-07-25 08:37:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:19,733 INFO L472 AbstractCegarLoop]: Abstraction has 2735 states and 4072 transitions. [2018-07-25 08:37:19,734 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:37:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4072 transitions. [2018-07-25 08:37:19,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:19,735 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:19,735 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 08:37:19,736 INFO L415 AbstractCegarLoop]: === Iteration 47 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:19,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1122647006, now seen corresponding path program 1 times [2018-07-25 08:37:19,736 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:19,751 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:19,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:19,751 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:19,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:19,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:19,752 INFO L87 Difference]: Start difference. First operand 2735 states and 4072 transitions. Second operand 8 states. [2018-07-25 08:37:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:20,757 INFO L93 Difference]: Finished difference Result 2960 states and 4385 transitions. [2018-07-25 08:37:20,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:37:20,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-07-25 08:37:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:20,768 INFO L225 Difference]: With dead ends: 2960 [2018-07-25 08:37:20,769 INFO L226 Difference]: Without dead ends: 2958 [2018-07-25 08:37:20,771 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 08:37:20,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2018-07-25 08:37:21,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2737. [2018-07-25 08:37:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2737 states. [2018-07-25 08:37:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 4072 transitions. [2018-07-25 08:37:21,708 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 4072 transitions. Word has length 22 [2018-07-25 08:37:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:21,708 INFO L472 AbstractCegarLoop]: Abstraction has 2737 states and 4072 transitions. [2018-07-25 08:37:21,708 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 4072 transitions. [2018-07-25 08:37:21,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:21,710 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:21,710 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 08:37:21,711 INFO L415 AbstractCegarLoop]: === Iteration 48 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:21,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1183866397, now seen corresponding path program 1 times [2018-07-25 08:37:21,711 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:21,728 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 08:37:21,729 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:21,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:21,729 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:21,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:21,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:21,730 INFO L87 Difference]: Start difference. First operand 2737 states and 4072 transitions. Second operand 9 states. [2018-07-25 08:37:22,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:22,971 INFO L93 Difference]: Finished difference Result 2904 states and 4306 transitions. [2018-07-25 08:37:22,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:37:22,971 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 08:37:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:22,979 INFO L225 Difference]: With dead ends: 2904 [2018-07-25 08:37:22,979 INFO L226 Difference]: Without dead ends: 2903 [2018-07-25 08:37:22,980 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 08:37:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2018-07-25 08:37:24,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2719. [2018-07-25 08:37:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2719 states. [2018-07-25 08:37:24,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 4036 transitions. [2018-07-25 08:37:24,036 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 4036 transitions. Word has length 22 [2018-07-25 08:37:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:24,036 INFO L472 AbstractCegarLoop]: Abstraction has 2719 states and 4036 transitions. [2018-07-25 08:37:24,036 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 4036 transitions. [2018-07-25 08:37:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:24,037 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:24,037 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 08:37:24,038 INFO L415 AbstractCegarLoop]: === Iteration 49 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:24,038 INFO L82 PathProgramCache]: Analyzing trace with hash 15880131, now seen corresponding path program 1 times [2018-07-25 08:37:24,038 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:24,052 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 08:37:24,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:24,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:24,053 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:24,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:24,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:24,053 INFO L87 Difference]: Start difference. First operand 2719 states and 4036 transitions. Second operand 8 states. [2018-07-25 08:37:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:25,164 INFO L93 Difference]: Finished difference Result 3086 states and 4558 transitions. [2018-07-25 08:37:25,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:37:25,164 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-07-25 08:37:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:25,171 INFO L225 Difference]: With dead ends: 3086 [2018-07-25 08:37:25,171 INFO L226 Difference]: Without dead ends: 3084 [2018-07-25 08:37:25,173 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 08:37:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2018-07-25 08:37:26,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2747. [2018-07-25 08:37:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2747 states. [2018-07-25 08:37:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 4080 transitions. [2018-07-25 08:37:26,288 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 4080 transitions. Word has length 22 [2018-07-25 08:37:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:26,288 INFO L472 AbstractCegarLoop]: Abstraction has 2747 states and 4080 transitions. [2018-07-25 08:37:26,288 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 4080 transitions. [2018-07-25 08:37:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:26,290 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:26,291 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 08:37:26,291 INFO L415 AbstractCegarLoop]: === Iteration 50 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:26,291 INFO L82 PathProgramCache]: Analyzing trace with hash 627807824, now seen corresponding path program 1 times [2018-07-25 08:37:26,291 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:26,314 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 08:37:26,314 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:26,314 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:37:26,315 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:37:26,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:37:26,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:37:26,315 INFO L87 Difference]: Start difference. First operand 2747 states and 4080 transitions. Second operand 10 states. [2018-07-25 08:37:27,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:27,668 INFO L93 Difference]: Finished difference Result 3253 states and 4807 transitions. [2018-07-25 08:37:27,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:37:27,669 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-25 08:37:27,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:27,676 INFO L225 Difference]: With dead ends: 3253 [2018-07-25 08:37:27,676 INFO L226 Difference]: Without dead ends: 3251 [2018-07-25 08:37:27,678 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 08:37:27,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2018-07-25 08:37:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2802. [2018-07-25 08:37:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2802 states. [2018-07-25 08:37:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4162 transitions. [2018-07-25 08:37:28,759 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4162 transitions. Word has length 22 [2018-07-25 08:37:28,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:28,760 INFO L472 AbstractCegarLoop]: Abstraction has 2802 states and 4162 transitions. [2018-07-25 08:37:28,760 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:37:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4162 transitions. [2018-07-25 08:37:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:28,762 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:28,762 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 08:37:28,762 INFO L415 AbstractCegarLoop]: === Iteration 51 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:28,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1964547658, now seen corresponding path program 2 times [2018-07-25 08:37:28,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:28,781 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 08:37:28,781 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:28,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:28,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:28,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:28,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:28,782 INFO L87 Difference]: Start difference. First operand 2802 states and 4162 transitions. Second operand 9 states. [2018-07-25 08:37:29,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:29,922 INFO L93 Difference]: Finished difference Result 2833 states and 4197 transitions. [2018-07-25 08:37:29,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:37:29,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 08:37:29,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:29,928 INFO L225 Difference]: With dead ends: 2833 [2018-07-25 08:37:29,929 INFO L226 Difference]: Without dead ends: 2832 [2018-07-25 08:37:29,930 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 08:37:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2018-07-25 08:37:30,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2802. [2018-07-25 08:37:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2802 states. [2018-07-25 08:37:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4158 transitions. [2018-07-25 08:37:30,954 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4158 transitions. Word has length 22 [2018-07-25 08:37:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:30,954 INFO L472 AbstractCegarLoop]: Abstraction has 2802 states and 4158 transitions. [2018-07-25 08:37:30,954 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:30,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4158 transitions. [2018-07-25 08:37:30,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:30,956 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:30,956 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 08:37:30,957 INFO L415 AbstractCegarLoop]: === Iteration 52 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:30,957 INFO L82 PathProgramCache]: Analyzing trace with hash -430310174, now seen corresponding path program 1 times [2018-07-25 08:37:30,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:30,972 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 08:37:30,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:30,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:30,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:30,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:30,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:30,973 INFO L87 Difference]: Start difference. First operand 2802 states and 4158 transitions. Second operand 9 states. [2018-07-25 08:37:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:32,142 INFO L93 Difference]: Finished difference Result 3077 states and 4552 transitions. [2018-07-25 08:37:32,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:37:32,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 08:37:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:32,148 INFO L225 Difference]: With dead ends: 3077 [2018-07-25 08:37:32,148 INFO L226 Difference]: Without dead ends: 3075 [2018-07-25 08:37:32,150 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 08:37:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2018-07-25 08:37:33,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2917. [2018-07-25 08:37:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2917 states. [2018-07-25 08:37:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4324 transitions. [2018-07-25 08:37:33,211 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4324 transitions. Word has length 22 [2018-07-25 08:37:33,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:33,211 INFO L472 AbstractCegarLoop]: Abstraction has 2917 states and 4324 transitions. [2018-07-25 08:37:33,211 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:33,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4324 transitions. [2018-07-25 08:37:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:33,212 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:33,213 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 08:37:33,213 INFO L415 AbstractCegarLoop]: === Iteration 53 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:33,213 INFO L82 PathProgramCache]: Analyzing trace with hash -203850887, now seen corresponding path program 1 times [2018-07-25 08:37:33,213 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:33,229 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 08:37:33,230 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:33,230 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:33,230 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:33,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:33,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:33,231 INFO L87 Difference]: Start difference. First operand 2917 states and 4324 transitions. Second operand 9 states. [2018-07-25 08:37:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:34,507 INFO L93 Difference]: Finished difference Result 3087 states and 4560 transitions. [2018-07-25 08:37:34,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:37:34,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-07-25 08:37:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:34,511 INFO L225 Difference]: With dead ends: 3087 [2018-07-25 08:37:34,511 INFO L226 Difference]: Without dead ends: 3086 [2018-07-25 08:37:34,512 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 08:37:34,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2018-07-25 08:37:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 2915. [2018-07-25 08:37:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2915 states. [2018-07-25 08:37:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 4314 transitions. [2018-07-25 08:37:35,514 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 4314 transitions. Word has length 22 [2018-07-25 08:37:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:35,514 INFO L472 AbstractCegarLoop]: Abstraction has 2915 states and 4314 transitions. [2018-07-25 08:37:35,514 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 4314 transitions. [2018-07-25 08:37:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:35,516 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:35,516 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 08:37:35,516 INFO L415 AbstractCegarLoop]: === Iteration 54 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:35,516 INFO L82 PathProgramCache]: Analyzing trace with hash 345073063, now seen corresponding path program 1 times [2018-07-25 08:37:35,516 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:35,531 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 08:37:35,531 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:35,532 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:35,532 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:35,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:35,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:35,532 INFO L87 Difference]: Start difference. First operand 2915 states and 4314 transitions. Second operand 8 states. [2018-07-25 08:37:36,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:36,794 INFO L93 Difference]: Finished difference Result 3266 states and 4816 transitions. [2018-07-25 08:37:36,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:37:36,794 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-07-25 08:37:36,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:36,799 INFO L225 Difference]: With dead ends: 3266 [2018-07-25 08:37:36,799 INFO L226 Difference]: Without dead ends: 3264 [2018-07-25 08:37:36,800 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 08:37:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2018-07-25 08:37:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 2934. [2018-07-25 08:37:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2018-07-25 08:37:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4340 transitions. [2018-07-25 08:37:37,959 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4340 transitions. Word has length 22 [2018-07-25 08:37:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:37,959 INFO L472 AbstractCegarLoop]: Abstraction has 2934 states and 4340 transitions. [2018-07-25 08:37:37,959 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4340 transitions. [2018-07-25 08:37:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:37,960 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:37,961 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 08:37:37,961 INFO L415 AbstractCegarLoop]: === Iteration 55 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:37,961 INFO L82 PathProgramCache]: Analyzing trace with hash -619973631, now seen corresponding path program 2 times [2018-07-25 08:37:37,961 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:37,973 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 08:37:37,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:37,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:37,973 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:37:37,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:37:37,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:37:37,974 INFO L87 Difference]: Start difference. First operand 2934 states and 4340 transitions. Second operand 10 states. [2018-07-25 08:37:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:39,453 INFO L93 Difference]: Finished difference Result 3688 states and 5467 transitions. [2018-07-25 08:37:39,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:37:39,454 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-25 08:37:39,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:39,458 INFO L225 Difference]: With dead ends: 3688 [2018-07-25 08:37:39,459 INFO L226 Difference]: Without dead ends: 3686 [2018-07-25 08:37:39,460 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 08:37:39,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2018-07-25 08:37:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3074. [2018-07-25 08:37:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3074 states. [2018-07-25 08:37:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 4552 transitions. [2018-07-25 08:37:40,527 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 4552 transitions. Word has length 22 [2018-07-25 08:37:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:40,527 INFO L472 AbstractCegarLoop]: Abstraction has 3074 states and 4552 transitions. [2018-07-25 08:37:40,527 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:37:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 4552 transitions. [2018-07-25 08:37:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-25 08:37:40,530 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:40,530 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 08:37:40,530 INFO L415 AbstractCegarLoop]: === Iteration 56 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:40,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1613894486, now seen corresponding path program 1 times [2018-07-25 08:37:40,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:40,550 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 08:37:40,550 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:40,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:37:40,551 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:37:40,551 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:37:40,551 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:37:40,551 INFO L87 Difference]: Start difference. First operand 3074 states and 4552 transitions. Second operand 10 states. [2018-07-25 08:37:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:42,008 INFO L93 Difference]: Finished difference Result 3608 states and 5324 transitions. [2018-07-25 08:37:42,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:37:42,009 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-07-25 08:37:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:42,013 INFO L225 Difference]: With dead ends: 3608 [2018-07-25 08:37:42,014 INFO L226 Difference]: Without dead ends: 3606 [2018-07-25 08:37:42,015 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 08:37:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2018-07-25 08:37:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 3133. [2018-07-25 08:37:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3133 states. [2018-07-25 08:37:43,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 4640 transitions. [2018-07-25 08:37:43,118 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 4640 transitions. Word has length 22 [2018-07-25 08:37:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:43,119 INFO L472 AbstractCegarLoop]: Abstraction has 3133 states and 4640 transitions. [2018-07-25 08:37:43,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:37:43,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 4640 transitions. [2018-07-25 08:37:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:37:43,121 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:43,121 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:43,121 INFO L415 AbstractCegarLoop]: === Iteration 57 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:43,121 INFO L82 PathProgramCache]: Analyzing trace with hash -682508600, now seen corresponding path program 2 times [2018-07-25 08:37:43,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:43,136 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 08:37:43,136 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:43,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:37:43,137 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:37:43,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:37:43,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:37:43,137 INFO L87 Difference]: Start difference. First operand 3133 states and 4640 transitions. Second operand 11 states. [2018-07-25 08:37:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:44,360 INFO L93 Difference]: Finished difference Result 3236 states and 4771 transitions. [2018-07-25 08:37:44,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:37:44,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:37:44,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:44,364 INFO L225 Difference]: With dead ends: 3236 [2018-07-25 08:37:44,364 INFO L226 Difference]: Without dead ends: 3235 [2018-07-25 08:37:44,365 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 08:37:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2018-07-25 08:37:45,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3144. [2018-07-25 08:37:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3144 states. [2018-07-25 08:37:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 4654 transitions. [2018-07-25 08:37:45,621 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 4654 transitions. Word has length 25 [2018-07-25 08:37:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:45,622 INFO L472 AbstractCegarLoop]: Abstraction has 3144 states and 4654 transitions. [2018-07-25 08:37:45,622 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:37:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 4654 transitions. [2018-07-25 08:37:45,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:37:45,624 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:45,624 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 08:37:45,624 INFO L415 AbstractCegarLoop]: === Iteration 58 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:45,624 INFO L82 PathProgramCache]: Analyzing trace with hash -548371823, now seen corresponding path program 1 times [2018-07-25 08:37:45,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:45,645 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 08:37:45,645 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:45,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:37:45,646 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:37:45,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:37:45,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:37:45,646 INFO L87 Difference]: Start difference. First operand 3144 states and 4654 transitions. Second operand 11 states. [2018-07-25 08:37:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:47,211 INFO L93 Difference]: Finished difference Result 3658 states and 5404 transitions. [2018-07-25 08:37:47,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:37:47,211 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:37:47,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:47,216 INFO L225 Difference]: With dead ends: 3658 [2018-07-25 08:37:47,216 INFO L226 Difference]: Without dead ends: 3656 [2018-07-25 08:37:47,217 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 08:37:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2018-07-25 08:37:48,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3270. [2018-07-25 08:37:48,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2018-07-25 08:37:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4837 transitions. [2018-07-25 08:37:48,426 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4837 transitions. Word has length 25 [2018-07-25 08:37:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:48,426 INFO L472 AbstractCegarLoop]: Abstraction has 3270 states and 4837 transitions. [2018-07-25 08:37:48,426 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:37:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4837 transitions. [2018-07-25 08:37:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:37:48,430 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:48,430 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 08:37:48,430 INFO L415 AbstractCegarLoop]: === Iteration 59 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:48,430 INFO L82 PathProgramCache]: Analyzing trace with hash -843643870, now seen corresponding path program 1 times [2018-07-25 08:37:48,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:48,454 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 08:37:48,455 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:48,455 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:37:48,455 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:37:48,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:37:48,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:37:48,456 INFO L87 Difference]: Start difference. First operand 3270 states and 4837 transitions. Second operand 10 states. [2018-07-25 08:37:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:50,036 INFO L93 Difference]: Finished difference Result 3411 states and 5033 transitions. [2018-07-25 08:37:50,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:37:50,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-25 08:37:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:50,040 INFO L225 Difference]: With dead ends: 3411 [2018-07-25 08:37:50,040 INFO L226 Difference]: Without dead ends: 3410 [2018-07-25 08:37:50,041 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 08:37:50,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2018-07-25 08:37:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3284. [2018-07-25 08:37:51,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3284 states. [2018-07-25 08:37:51,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 4859 transitions. [2018-07-25 08:37:51,301 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 4859 transitions. Word has length 25 [2018-07-25 08:37:51,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:51,301 INFO L472 AbstractCegarLoop]: Abstraction has 3284 states and 4859 transitions. [2018-07-25 08:37:51,302 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:37:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 4859 transitions. [2018-07-25 08:37:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:37:51,304 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:51,305 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 08:37:51,305 INFO L415 AbstractCegarLoop]: === Iteration 60 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:51,305 INFO L82 PathProgramCache]: Analyzing trace with hash -843554207, now seen corresponding path program 1 times [2018-07-25 08:37:51,305 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:51,319 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:51,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:51,319 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:37:51,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:37:51,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:37:51,319 INFO L87 Difference]: Start difference. First operand 3284 states and 4859 transitions. Second operand 10 states. [2018-07-25 08:37:52,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:52,937 INFO L93 Difference]: Finished difference Result 3561 states and 5284 transitions. [2018-07-25 08:37:52,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:37:52,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-25 08:37:52,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:52,944 INFO L225 Difference]: With dead ends: 3561 [2018-07-25 08:37:52,944 INFO L226 Difference]: Without dead ends: 3559 [2018-07-25 08:37:52,946 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 08:37:52,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2018-07-25 08:37:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 3286. [2018-07-25 08:37:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3286 states. [2018-07-25 08:37:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 4860 transitions. [2018-07-25 08:37:54,284 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 4860 transitions. Word has length 25 [2018-07-25 08:37:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:54,284 INFO L472 AbstractCegarLoop]: Abstraction has 3286 states and 4860 transitions. [2018-07-25 08:37:54,285 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:37:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 4860 transitions. [2018-07-25 08:37:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:37:54,287 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:54,287 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 08:37:54,287 INFO L415 AbstractCegarLoop]: === Iteration 61 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:54,287 INFO L82 PathProgramCache]: Analyzing trace with hash -760804007, now seen corresponding path program 1 times [2018-07-25 08:37:54,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:54,306 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 08:37:54,306 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:54,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:37:54,307 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:37:54,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:37:54,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:37:54,307 INFO L87 Difference]: Start difference. First operand 3286 states and 4860 transitions. Second operand 11 states. [2018-07-25 08:37:56,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:56,150 INFO L93 Difference]: Finished difference Result 3882 states and 5733 transitions. [2018-07-25 08:37:56,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:37:56,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:37:56,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:56,155 INFO L225 Difference]: With dead ends: 3882 [2018-07-25 08:37:56,155 INFO L226 Difference]: Without dead ends: 3880 [2018-07-25 08:37:56,157 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 08:37:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2018-07-25 08:37:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3586. [2018-07-25 08:37:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3586 states. [2018-07-25 08:37:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5319 transitions. [2018-07-25 08:37:57,492 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5319 transitions. Word has length 25 [2018-07-25 08:37:57,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:57,492 INFO L472 AbstractCegarLoop]: Abstraction has 3586 states and 5319 transitions. [2018-07-25 08:37:57,492 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:37:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5319 transitions. [2018-07-25 08:37:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:37:57,494 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:57,494 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 08:37:57,494 INFO L415 AbstractCegarLoop]: === Iteration 62 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:57,495 INFO L82 PathProgramCache]: Analyzing trace with hash -764742562, now seen corresponding path program 1 times [2018-07-25 08:37:57,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:57,512 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 08:37:57,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:57,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:37:57,513 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:37:57,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:37:57,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:37:57,513 INFO L87 Difference]: Start difference. First operand 3586 states and 5319 transitions. Second operand 11 states. [2018-07-25 08:37:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:59,052 INFO L93 Difference]: Finished difference Result 3739 states and 5530 transitions. [2018-07-25 08:37:59,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:37:59,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:37:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:59,059 INFO L225 Difference]: With dead ends: 3739 [2018-07-25 08:37:59,059 INFO L226 Difference]: Without dead ends: 3737 [2018-07-25 08:37:59,061 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 08:37:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2018-07-25 08:38:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3565. [2018-07-25 08:38:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3565 states. [2018-07-25 08:38:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 5287 transitions. [2018-07-25 08:38:00,459 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 5287 transitions. Word has length 25 [2018-07-25 08:38:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:00,459 INFO L472 AbstractCegarLoop]: Abstraction has 3565 states and 5287 transitions. [2018-07-25 08:38:00,460 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 5287 transitions. [2018-07-25 08:38:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:00,462 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:00,463 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 08:38:00,463 INFO L415 AbstractCegarLoop]: === Iteration 63 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:00,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1119735578, now seen corresponding path program 2 times [2018-07-25 08:38:00,463 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:00,488 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 08:38:00,488 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:00,488 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:00,488 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:00,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:00,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:00,489 INFO L87 Difference]: Start difference. First operand 3565 states and 5287 transitions. Second operand 11 states. [2018-07-25 08:38:02,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:02,016 INFO L93 Difference]: Finished difference Result 3781 states and 5599 transitions. [2018-07-25 08:38:02,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:38:02,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:02,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:02,026 INFO L225 Difference]: With dead ends: 3781 [2018-07-25 08:38:02,026 INFO L226 Difference]: Without dead ends: 3779 [2018-07-25 08:38:02,028 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 08:38:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2018-07-25 08:38:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3649. [2018-07-25 08:38:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3649 states. [2018-07-25 08:38:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 5423 transitions. [2018-07-25 08:38:03,407 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 5423 transitions. Word has length 25 [2018-07-25 08:38:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:03,407 INFO L472 AbstractCegarLoop]: Abstraction has 3649 states and 5423 transitions. [2018-07-25 08:38:03,407 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 5423 transitions. [2018-07-25 08:38:03,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:03,410 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:03,410 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 08:38:03,411 INFO L415 AbstractCegarLoop]: === Iteration 64 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:03,411 INFO L82 PathProgramCache]: Analyzing trace with hash -266056341, now seen corresponding path program 1 times [2018-07-25 08:38:03,411 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:03,431 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 08:38:03,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:03,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:38:03,432 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:03,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:03,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:03,433 INFO L87 Difference]: Start difference. First operand 3649 states and 5423 transitions. Second operand 11 states. [2018-07-25 08:38:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:05,133 INFO L93 Difference]: Finished difference Result 3933 states and 5840 transitions. [2018-07-25 08:38:05,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:38:05,134 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:05,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:05,138 INFO L225 Difference]: With dead ends: 3933 [2018-07-25 08:38:05,138 INFO L226 Difference]: Without dead ends: 3931 [2018-07-25 08:38:05,139 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 08:38:05,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2018-07-25 08:38:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3390. [2018-07-25 08:38:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3390 states. [2018-07-25 08:38:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 5040 transitions. [2018-07-25 08:38:06,486 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 5040 transitions. Word has length 25 [2018-07-25 08:38:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:06,486 INFO L472 AbstractCegarLoop]: Abstraction has 3390 states and 5040 transitions. [2018-07-25 08:38:06,486 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 5040 transitions. [2018-07-25 08:38:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:06,489 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:06,489 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 08:38:06,489 INFO L415 AbstractCegarLoop]: === Iteration 65 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:06,489 INFO L82 PathProgramCache]: Analyzing trace with hash -327186069, now seen corresponding path program 2 times [2018-07-25 08:38:06,489 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:06,502 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 08:38:06,502 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:06,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:38:06,503 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:06,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:06,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:06,503 INFO L87 Difference]: Start difference. First operand 3390 states and 5040 transitions. Second operand 11 states. [2018-07-25 08:38:08,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:08,166 INFO L93 Difference]: Finished difference Result 3713 states and 5498 transitions. [2018-07-25 08:38:08,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:38:08,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:08,173 INFO L225 Difference]: With dead ends: 3713 [2018-07-25 08:38:08,173 INFO L226 Difference]: Without dead ends: 3711 [2018-07-25 08:38:08,176 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 08:38:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3711 states. [2018-07-25 08:38:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3711 to 3317. [2018-07-25 08:38:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3317 states. [2018-07-25 08:38:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4921 transitions. [2018-07-25 08:38:09,569 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4921 transitions. Word has length 25 [2018-07-25 08:38:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:09,569 INFO L472 AbstractCegarLoop]: Abstraction has 3317 states and 4921 transitions. [2018-07-25 08:38:09,569 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4921 transitions. [2018-07-25 08:38:09,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:09,572 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:09,572 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 08:38:09,572 INFO L415 AbstractCegarLoop]: === Iteration 66 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:09,572 INFO L82 PathProgramCache]: Analyzing trace with hash -682179085, now seen corresponding path program 1 times [2018-07-25 08:38:09,572 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:09,594 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 08:38:09,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:09,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:38:09,594 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:38:09,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:38:09,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:38:09,595 INFO L87 Difference]: Start difference. First operand 3317 states and 4921 transitions. Second operand 12 states. [2018-07-25 08:38:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:11,251 INFO L93 Difference]: Finished difference Result 3507 states and 5215 transitions. [2018-07-25 08:38:11,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:38:11,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-07-25 08:38:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:11,256 INFO L225 Difference]: With dead ends: 3507 [2018-07-25 08:38:11,256 INFO L226 Difference]: Without dead ends: 3506 [2018-07-25 08:38:11,258 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 08:38:11,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2018-07-25 08:38:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3311. [2018-07-25 08:38:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2018-07-25 08:38:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4896 transitions. [2018-07-25 08:38:12,632 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4896 transitions. Word has length 25 [2018-07-25 08:38:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:12,633 INFO L472 AbstractCegarLoop]: Abstraction has 3311 states and 4896 transitions. [2018-07-25 08:38:12,633 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:38:12,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4896 transitions. [2018-07-25 08:38:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:12,635 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:12,635 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 08:38:12,635 INFO L415 AbstractCegarLoop]: === Iteration 67 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash -682089422, now seen corresponding path program 1 times [2018-07-25 08:38:12,635 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:12,655 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 08:38:12,656 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:12,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:38:12,656 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:12,656 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:12,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:12,656 INFO L87 Difference]: Start difference. First operand 3311 states and 4896 transitions. Second operand 11 states. [2018-07-25 08:38:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:14,441 INFO L93 Difference]: Finished difference Result 3779 states and 5560 transitions. [2018-07-25 08:38:14,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:38:14,441 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:14,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:14,445 INFO L225 Difference]: With dead ends: 3779 [2018-07-25 08:38:14,445 INFO L226 Difference]: Without dead ends: 3777 [2018-07-25 08:38:14,446 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 08:38:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2018-07-25 08:38:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3309. [2018-07-25 08:38:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3309 states. [2018-07-25 08:38:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4898 transitions. [2018-07-25 08:38:15,820 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4898 transitions. Word has length 25 [2018-07-25 08:38:15,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:15,820 INFO L472 AbstractCegarLoop]: Abstraction has 3309 states and 4898 transitions. [2018-07-25 08:38:15,820 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4898 transitions. [2018-07-25 08:38:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:15,823 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:15,823 INFO L354 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:38:15,823 INFO L415 AbstractCegarLoop]: === Iteration 68 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:15,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1834260598, now seen corresponding path program 2 times [2018-07-25 08:38:15,823 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:15,837 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 08:38:15,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:15,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:38:15,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:15,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:15,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:15,838 INFO L87 Difference]: Start difference. First operand 3309 states and 4898 transitions. Second operand 11 states. [2018-07-25 08:38:17,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:17,360 INFO L93 Difference]: Finished difference Result 3453 states and 5091 transitions. [2018-07-25 08:38:17,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:38:17,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:17,364 INFO L225 Difference]: With dead ends: 3453 [2018-07-25 08:38:17,365 INFO L226 Difference]: Without dead ends: 3452 [2018-07-25 08:38:17,366 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 08:38:17,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3452 states. [2018-07-25 08:38:18,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3452 to 3335. [2018-07-25 08:38:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3335 states. [2018-07-25 08:38:18,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3335 states to 3335 states and 4934 transitions. [2018-07-25 08:38:18,836 INFO L78 Accepts]: Start accepts. Automaton has 3335 states and 4934 transitions. Word has length 25 [2018-07-25 08:38:18,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:18,837 INFO L472 AbstractCegarLoop]: Abstraction has 3335 states and 4934 transitions. [2018-07-25 08:38:18,837 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3335 states and 4934 transitions. [2018-07-25 08:38:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:18,839 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:18,839 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 08:38:18,839 INFO L415 AbstractCegarLoop]: === Iteration 69 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:18,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1045899279, now seen corresponding path program 1 times [2018-07-25 08:38:18,839 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:18,860 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 08:38:18,860 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:18,861 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:38:18,861 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:18,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:18,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:18,861 INFO L87 Difference]: Start difference. First operand 3335 states and 4934 transitions. Second operand 11 states. [2018-07-25 08:38:21,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:21,031 INFO L93 Difference]: Finished difference Result 3881 states and 5736 transitions. [2018-07-25 08:38:21,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:38:21,032 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:21,036 INFO L225 Difference]: With dead ends: 3881 [2018-07-25 08:38:21,036 INFO L226 Difference]: Without dead ends: 3879 [2018-07-25 08:38:21,038 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 08:38:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2018-07-25 08:38:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3492. [2018-07-25 08:38:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3492 states. [2018-07-25 08:38:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 5163 transitions. [2018-07-25 08:38:22,561 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 5163 transitions. Word has length 25 [2018-07-25 08:38:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:22,561 INFO L472 AbstractCegarLoop]: Abstraction has 3492 states and 5163 transitions. [2018-07-25 08:38:22,561 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 5163 transitions. [2018-07-25 08:38:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:22,564 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:22,564 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 08:38:22,564 INFO L415 AbstractCegarLoop]: === Iteration 70 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:22,564 INFO L82 PathProgramCache]: Analyzing trace with hash -746629056, now seen corresponding path program 1 times [2018-07-25 08:38:22,564 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:22,580 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 08:38:22,581 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:22,581 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:22,581 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:38:22,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:38:22,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:38:22,581 INFO L87 Difference]: Start difference. First operand 3492 states and 5163 transitions. Second operand 10 states. [2018-07-25 08:38:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:24,385 INFO L93 Difference]: Finished difference Result 3625 states and 5347 transitions. [2018-07-25 08:38:24,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:38:24,386 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-25 08:38:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:24,389 INFO L225 Difference]: With dead ends: 3625 [2018-07-25 08:38:24,390 INFO L226 Difference]: Without dead ends: 3624 [2018-07-25 08:38:24,391 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 08:38:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2018-07-25 08:38:25,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3506. [2018-07-25 08:38:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3506 states. [2018-07-25 08:38:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 5185 transitions. [2018-07-25 08:38:25,965 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 5185 transitions. Word has length 25 [2018-07-25 08:38:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:25,965 INFO L472 AbstractCegarLoop]: Abstraction has 3506 states and 5185 transitions. [2018-07-25 08:38:25,965 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:38:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 5185 transitions. [2018-07-25 08:38:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:25,967 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:25,968 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 08:38:25,968 INFO L415 AbstractCegarLoop]: === Iteration 71 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:25,968 INFO L82 PathProgramCache]: Analyzing trace with hash -746540097, now seen corresponding path program 1 times [2018-07-25 08:38:25,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:38:25,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:25,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:38:25,983 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:38:25,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:38:25,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:38:25,984 INFO L87 Difference]: Start difference. First operand 3506 states and 5185 transitions. Second operand 10 states. [2018-07-25 08:38:27,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:27,868 INFO L93 Difference]: Finished difference Result 3779 states and 5600 transitions. [2018-07-25 08:38:27,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:38:27,868 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-25 08:38:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:27,873 INFO L225 Difference]: With dead ends: 3779 [2018-07-25 08:38:27,873 INFO L226 Difference]: Without dead ends: 3777 [2018-07-25 08:38:27,874 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 08:38:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2018-07-25 08:38:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3508. [2018-07-25 08:38:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3508 states. [2018-07-25 08:38:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3508 states to 3508 states and 5186 transitions. [2018-07-25 08:38:29,491 INFO L78 Accepts]: Start accepts. Automaton has 3508 states and 5186 transitions. Word has length 25 [2018-07-25 08:38:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:29,491 INFO L472 AbstractCegarLoop]: Abstraction has 3508 states and 5186 transitions. [2018-07-25 08:38:29,491 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:38:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3508 states and 5186 transitions. [2018-07-25 08:38:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:29,493 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:29,493 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 08:38:29,494 INFO L415 AbstractCegarLoop]: === Iteration 72 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:29,494 INFO L82 PathProgramCache]: Analyzing trace with hash -2007923005, now seen corresponding path program 1 times [2018-07-25 08:38:29,494 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:29,513 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 08:38:29,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:29,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:29,514 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:29,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:29,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:29,514 INFO L87 Difference]: Start difference. First operand 3508 states and 5186 transitions. Second operand 11 states. [2018-07-25 08:38:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:31,740 INFO L93 Difference]: Finished difference Result 4106 states and 6063 transitions. [2018-07-25 08:38:31,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:38:31,740 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:31,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:31,746 INFO L225 Difference]: With dead ends: 4106 [2018-07-25 08:38:31,746 INFO L226 Difference]: Without dead ends: 4104 [2018-07-25 08:38:31,747 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 08:38:31,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2018-07-25 08:38:33,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3808. [2018-07-25 08:38:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3808 states. [2018-07-25 08:38:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 5645 transitions. [2018-07-25 08:38:33,481 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 5645 transitions. Word has length 25 [2018-07-25 08:38:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:33,481 INFO L472 AbstractCegarLoop]: Abstraction has 3808 states and 5645 transitions. [2018-07-25 08:38:33,481 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 5645 transitions. [2018-07-25 08:38:33,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:33,484 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:33,484 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 08:38:33,484 INFO L415 AbstractCegarLoop]: === Iteration 73 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:33,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1294788559, now seen corresponding path program 2 times [2018-07-25 08:38:33,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:33,503 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 08:38:33,503 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:33,503 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:33,503 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:33,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:33,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:33,504 INFO L87 Difference]: Start difference. First operand 3808 states and 5645 transitions. Second operand 11 states. [2018-07-25 08:38:35,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:35,390 INFO L93 Difference]: Finished difference Result 4020 states and 5953 transitions. [2018-07-25 08:38:35,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-25 08:38:35,390 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:35,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:35,395 INFO L225 Difference]: With dead ends: 4020 [2018-07-25 08:38:35,395 INFO L226 Difference]: Without dead ends: 4018 [2018-07-25 08:38:35,396 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 08:38:35,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2018-07-25 08:38:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 3902. [2018-07-25 08:38:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3902 states. [2018-07-25 08:38:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3902 states to 3902 states and 5795 transitions. [2018-07-25 08:38:37,272 INFO L78 Accepts]: Start accepts. Automaton has 3902 states and 5795 transitions. Word has length 25 [2018-07-25 08:38:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:37,272 INFO L472 AbstractCegarLoop]: Abstraction has 3902 states and 5795 transitions. [2018-07-25 08:38:37,272 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:37,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states and 5795 transitions. [2018-07-25 08:38:37,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:37,275 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:37,275 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 08:38:37,275 INFO L415 AbstractCegarLoop]: === Iteration 74 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:37,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1649781575, now seen corresponding path program 1 times [2018-07-25 08:38:37,275 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:38:37,294 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:37,294 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:37,295 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:37,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:37,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:37,295 INFO L87 Difference]: Start difference. First operand 3902 states and 5795 transitions. Second operand 11 states. [2018-07-25 08:38:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:39,424 INFO L93 Difference]: Finished difference Result 4050 states and 5999 transitions. [2018-07-25 08:38:39,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 08:38:39,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:39,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:39,430 INFO L225 Difference]: With dead ends: 4050 [2018-07-25 08:38:39,430 INFO L226 Difference]: Without dead ends: 4048 [2018-07-25 08:38:39,432 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 08:38:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2018-07-25 08:38:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 3881. [2018-07-25 08:38:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3881 states. [2018-07-25 08:38:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3881 states to 3881 states and 5763 transitions. [2018-07-25 08:38:41,163 INFO L78 Accepts]: Start accepts. Automaton has 3881 states and 5763 transitions. Word has length 25 [2018-07-25 08:38:41,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:41,163 INFO L472 AbstractCegarLoop]: Abstraction has 3881 states and 5763 transitions. [2018-07-25 08:38:41,163 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3881 states and 5763 transitions. [2018-07-25 08:38:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:41,165 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:41,165 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 08:38:41,165 INFO L415 AbstractCegarLoop]: === Iteration 75 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:41,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1238220129, now seen corresponding path program 3 times [2018-07-25 08:38:41,166 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:41,185 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 08:38:41,185 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:41,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:38:41,185 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:38:41,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:38:41,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:38:41,186 INFO L87 Difference]: Start difference. First operand 3881 states and 5763 transitions. Second operand 12 states. [2018-07-25 08:38:43,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:43,190 INFO L93 Difference]: Finished difference Result 4100 states and 6121 transitions. [2018-07-25 08:38:43,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:38:43,190 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-07-25 08:38:43,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:43,194 INFO L225 Difference]: With dead ends: 4100 [2018-07-25 08:38:43,194 INFO L226 Difference]: Without dead ends: 4099 [2018-07-25 08:38:43,195 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 08:38:43,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2018-07-25 08:38:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 3881. [2018-07-25 08:38:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3881 states. [2018-07-25 08:38:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3881 states to 3881 states and 5751 transitions. [2018-07-25 08:38:44,924 INFO L78 Accepts]: Start accepts. Automaton has 3881 states and 5751 transitions. Word has length 25 [2018-07-25 08:38:44,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:44,924 INFO L472 AbstractCegarLoop]: Abstraction has 3881 states and 5751 transitions. [2018-07-25 08:38:44,924 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:38:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3881 states and 5751 transitions. [2018-07-25 08:38:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:44,926 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:44,927 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 08:38:44,927 INFO L415 AbstractCegarLoop]: === Iteration 76 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:44,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1238131170, now seen corresponding path program 1 times [2018-07-25 08:38:44,927 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:44,944 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 08:38:44,944 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:44,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:38:44,945 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:44,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:44,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:44,945 INFO L87 Difference]: Start difference. First operand 3881 states and 5751 transitions. Second operand 11 states. [2018-07-25 08:38:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:47,113 INFO L93 Difference]: Finished difference Result 4334 states and 6405 transitions. [2018-07-25 08:38:47,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:38:47,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:47,120 INFO L225 Difference]: With dead ends: 4334 [2018-07-25 08:38:47,120 INFO L226 Difference]: Without dead ends: 4332 [2018-07-25 08:38:47,121 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 08:38:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2018-07-25 08:38:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3884. [2018-07-25 08:38:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3884 states. [2018-07-25 08:38:48,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5761 transitions. [2018-07-25 08:38:48,881 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5761 transitions. Word has length 25 [2018-07-25 08:38:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:48,881 INFO L472 AbstractCegarLoop]: Abstraction has 3884 states and 5761 transitions. [2018-07-25 08:38:48,881 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5761 transitions. [2018-07-25 08:38:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:48,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:48,883 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 08:38:48,884 INFO L415 AbstractCegarLoop]: === Iteration 77 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:48,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1593213145, now seen corresponding path program 2 times [2018-07-25 08:38:48,884 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:38:48,899 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:48,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:48,899 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:48,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:48,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:48,899 INFO L87 Difference]: Start difference. First operand 3884 states and 5761 transitions. Second operand 11 states. [2018-07-25 08:38:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:50,944 INFO L93 Difference]: Finished difference Result 4233 states and 6284 transitions. [2018-07-25 08:38:50,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-25 08:38:50,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:50,949 INFO L225 Difference]: With dead ends: 4233 [2018-07-25 08:38:50,949 INFO L226 Difference]: Without dead ends: 4231 [2018-07-25 08:38:50,951 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 08:38:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2018-07-25 08:38:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 3898. [2018-07-25 08:38:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3898 states. [2018-07-25 08:38:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5767 transitions. [2018-07-25 08:38:52,815 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5767 transitions. Word has length 25 [2018-07-25 08:38:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:52,815 INFO L472 AbstractCegarLoop]: Abstraction has 3898 states and 5767 transitions. [2018-07-25 08:38:52,815 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:52,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5767 transitions. [2018-07-25 08:38:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-25 08:38:52,818 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:52,818 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 08:38:52,818 INFO L415 AbstractCegarLoop]: === Iteration 78 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:52,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1654342873, now seen corresponding path program 3 times [2018-07-25 08:38:52,818 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:38:52,837 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:52,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:52,837 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:52,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:52,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:52,838 INFO L87 Difference]: Start difference. First operand 3898 states and 5767 transitions. Second operand 11 states. [2018-07-25 08:38:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:54,976 INFO L93 Difference]: Finished difference Result 4193 states and 6183 transitions. [2018-07-25 08:38:54,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:38:54,976 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-07-25 08:38:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:54,981 INFO L225 Difference]: With dead ends: 4193 [2018-07-25 08:38:54,981 INFO L226 Difference]: Without dead ends: 4191 [2018-07-25 08:38:54,983 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 08:38:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2018-07-25 08:38:56,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 3545. [2018-07-25 08:38:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-07-25 08:38:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 5244 transitions. [2018-07-25 08:38:56,730 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 5244 transitions. Word has length 25 [2018-07-25 08:38:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:56,730 INFO L472 AbstractCegarLoop]: Abstraction has 3545 states and 5244 transitions. [2018-07-25 08:38:56,730 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:38:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 5244 transitions. [2018-07-25 08:38:56,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:38:56,732 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:56,732 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 08:38:56,733 INFO L415 AbstractCegarLoop]: === Iteration 79 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:56,733 INFO L82 PathProgramCache]: Analyzing trace with hash 787908893, now seen corresponding path program 3 times [2018-07-25 08:38:56,733 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:56,747 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 08:38:56,747 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:56,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:38:56,747 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:38:56,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:38:56,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:38:56,747 INFO L87 Difference]: Start difference. First operand 3545 states and 5244 transitions. Second operand 9 states. [2018-07-25 08:38:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:58,730 INFO L93 Difference]: Finished difference Result 3941 states and 5794 transitions. [2018-07-25 08:38:58,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:38:58,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 08:38:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:58,735 INFO L225 Difference]: With dead ends: 3941 [2018-07-25 08:38:58,735 INFO L226 Difference]: Without dead ends: 3939 [2018-07-25 08:38:58,736 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 08:38:58,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2018-07-25 08:39:00,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3561. [2018-07-25 08:39:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3561 states. [2018-07-25 08:39:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5266 transitions. [2018-07-25 08:39:00,438 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5266 transitions. Word has length 26 [2018-07-25 08:39:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:00,438 INFO L472 AbstractCegarLoop]: Abstraction has 3561 states and 5266 transitions. [2018-07-25 08:39:00,438 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:39:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5266 transitions. [2018-07-25 08:39:00,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:39:00,441 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:00,441 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 08:39:00,441 INFO L415 AbstractCegarLoop]: === Iteration 80 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:00,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1399836586, now seen corresponding path program 1 times [2018-07-25 08:39:00,442 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:00,453 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 08:39:00,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:00,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:39:00,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:39:00,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:39:00,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:39:00,454 INFO L87 Difference]: Start difference. First operand 3561 states and 5266 transitions. Second operand 9 states. [2018-07-25 08:39:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:02,589 INFO L93 Difference]: Finished difference Result 4069 states and 5985 transitions. [2018-07-25 08:39:02,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:39:02,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 08:39:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:02,594 INFO L225 Difference]: With dead ends: 4069 [2018-07-25 08:39:02,594 INFO L226 Difference]: Without dead ends: 4067 [2018-07-25 08:39:02,595 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 08:39:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2018-07-25 08:39:04,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 3477. [2018-07-25 08:39:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3477 states. [2018-07-25 08:39:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3477 states to 3477 states and 5132 transitions. [2018-07-25 08:39:04,275 INFO L78 Accepts]: Start accepts. Automaton has 3477 states and 5132 transitions. Word has length 26 [2018-07-25 08:39:04,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:04,275 INFO L472 AbstractCegarLoop]: Abstraction has 3477 states and 5132 transitions. [2018-07-25 08:39:04,275 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:39:04,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states and 5132 transitions. [2018-07-25 08:39:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:39:04,277 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:04,277 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 08:39:04,277 INFO L415 AbstractCegarLoop]: === Iteration 81 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:04,278 INFO L82 PathProgramCache]: Analyzing trace with hash -2111506926, now seen corresponding path program 1 times [2018-07-25 08:39:04,278 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:04,289 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 08:39:04,289 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:04,289 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:39:04,289 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:39:04,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:39:04,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:39:04,290 INFO L87 Difference]: Start difference. First operand 3477 states and 5132 transitions. Second operand 9 states. [2018-07-25 08:39:06,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:06,472 INFO L93 Difference]: Finished difference Result 4012 states and 5890 transitions. [2018-07-25 08:39:06,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:39:06,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 08:39:06,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:06,477 INFO L225 Difference]: With dead ends: 4012 [2018-07-25 08:39:06,477 INFO L226 Difference]: Without dead ends: 4010 [2018-07-25 08:39:06,478 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 08:39:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2018-07-25 08:39:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3427. [2018-07-25 08:39:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3427 states. [2018-07-25 08:39:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 5054 transitions. [2018-07-25 08:39:08,201 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 5054 transitions. Word has length 26 [2018-07-25 08:39:08,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:08,201 INFO L472 AbstractCegarLoop]: Abstraction has 3427 states and 5054 transitions. [2018-07-25 08:39:08,201 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:39:08,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 5054 transitions. [2018-07-25 08:39:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:39:08,203 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:08,203 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 08:39:08,203 INFO L415 AbstractCegarLoop]: === Iteration 82 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:08,203 INFO L82 PathProgramCache]: Analyzing trace with hash -538919271, now seen corresponding path program 3 times [2018-07-25 08:39:08,204 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:08,215 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 08:39:08,215 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:08,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:39:08,215 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:39:08,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:39:08,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:39:08,216 INFO L87 Difference]: Start difference. First operand 3427 states and 5054 transitions. Second operand 9 states. [2018-07-25 08:39:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:10,306 INFO L93 Difference]: Finished difference Result 3823 states and 5604 transitions. [2018-07-25 08:39:10,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:39:10,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 08:39:10,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:10,310 INFO L225 Difference]: With dead ends: 3823 [2018-07-25 08:39:10,310 INFO L226 Difference]: Without dead ends: 3821 [2018-07-25 08:39:10,311 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 08:39:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2018-07-25 08:39:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 3443. [2018-07-25 08:39:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2018-07-25 08:39:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 5076 transitions. [2018-07-25 08:39:12,052 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 5076 transitions. Word has length 26 [2018-07-25 08:39:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:12,052 INFO L472 AbstractCegarLoop]: Abstraction has 3443 states and 5076 transitions. [2018-07-25 08:39:12,052 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:39:12,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 5076 transitions. [2018-07-25 08:39:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:39:12,054 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:12,054 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 08:39:12,054 INFO L415 AbstractCegarLoop]: === Iteration 83 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1694948846, now seen corresponding path program 1 times [2018-07-25 08:39:12,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:12,071 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 08:39:12,071 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:12,071 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:39:12,072 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:39:12,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:39:12,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:39:12,072 INFO L87 Difference]: Start difference. First operand 3443 states and 5076 transitions. Second operand 9 states. [2018-07-25 08:39:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:14,290 INFO L93 Difference]: Finished difference Result 3990 states and 5852 transitions. [2018-07-25 08:39:14,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:39:14,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 08:39:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:14,295 INFO L225 Difference]: With dead ends: 3990 [2018-07-25 08:39:14,295 INFO L226 Difference]: Without dead ends: 3988 [2018-07-25 08:39:14,296 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 08:39:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2018-07-25 08:39:16,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3412. [2018-07-25 08:39:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3412 states. [2018-07-25 08:39:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5028 transitions. [2018-07-25 08:39:16,078 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5028 transitions. Word has length 26 [2018-07-25 08:39:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:16,079 INFO L472 AbstractCegarLoop]: Abstraction has 3412 states and 5028 transitions. [2018-07-25 08:39:16,079 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:39:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5028 transitions. [2018-07-25 08:39:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-25 08:39:16,080 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:16,080 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 08:39:16,081 INFO L415 AbstractCegarLoop]: === Iteration 84 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:16,081 INFO L82 PathProgramCache]: Analyzing trace with hash 729902152, now seen corresponding path program 1 times [2018-07-25 08:39:16,081 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:16,093 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 08:39:16,094 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:16,094 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:39:16,094 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:39:16,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:39:16,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:39:16,094 INFO L87 Difference]: Start difference. First operand 3412 states and 5028 transitions. Second operand 9 states. [2018-07-25 08:39:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:18,269 INFO L93 Difference]: Finished difference Result 3873 states and 5676 transitions. [2018-07-25 08:39:18,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:39:18,269 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-07-25 08:39:18,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:18,274 INFO L225 Difference]: With dead ends: 3873 [2018-07-25 08:39:18,274 INFO L226 Difference]: Without dead ends: 3871 [2018-07-25 08:39:18,275 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 08:39:18,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2018-07-25 08:39:20,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3309. [2018-07-25 08:39:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3309 states. [2018-07-25 08:39:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4864 transitions. [2018-07-25 08:39:20,055 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4864 transitions. Word has length 26 [2018-07-25 08:39:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:20,055 INFO L472 AbstractCegarLoop]: Abstraction has 3309 states and 4864 transitions. [2018-07-25 08:39:20,055 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:39:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4864 transitions. [2018-07-25 08:39:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:39:20,058 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:20,058 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 08:39:20,058 INFO L415 AbstractCegarLoop]: === Iteration 85 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:20,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1263161747, now seen corresponding path program 2 times [2018-07-25 08:39:20,058 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:20,076 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 08:39:20,077 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:20,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:39:20,077 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:39:20,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:39:20,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:39:20,077 INFO L87 Difference]: Start difference. First operand 3309 states and 4864 transitions. Second operand 10 states. [2018-07-25 08:39:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:22,238 INFO L93 Difference]: Finished difference Result 3625 states and 5291 transitions. [2018-07-25 08:39:22,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:39:22,238 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-25 08:39:22,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:22,242 INFO L225 Difference]: With dead ends: 3625 [2018-07-25 08:39:22,243 INFO L226 Difference]: Without dead ends: 3623 [2018-07-25 08:39:22,244 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 08:39:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2018-07-25 08:39:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3411. [2018-07-25 08:39:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3411 states. [2018-07-25 08:39:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 5008 transitions. [2018-07-25 08:39:24,081 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 5008 transitions. Word has length 29 [2018-07-25 08:39:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:24,081 INFO L472 AbstractCegarLoop]: Abstraction has 3411 states and 5008 transitions. [2018-07-25 08:39:24,081 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:39:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 5008 transitions. [2018-07-25 08:39:24,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:39:24,084 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:24,084 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 08:39:24,084 INFO L415 AbstractCegarLoop]: === Iteration 86 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:24,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1259223192, now seen corresponding path program 2 times [2018-07-25 08:39:24,085 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:24,098 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 08:39:24,098 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:24,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:39:24,099 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:39:24,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:39:24,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:39:24,099 INFO L87 Difference]: Start difference. First operand 3411 states and 5008 transitions. Second operand 10 states. [2018-07-25 08:39:26,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:26,294 INFO L93 Difference]: Finished difference Result 3682 states and 5400 transitions. [2018-07-25 08:39:26,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:39:26,294 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-25 08:39:26,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:26,299 INFO L225 Difference]: With dead ends: 3682 [2018-07-25 08:39:26,299 INFO L226 Difference]: Without dead ends: 3680 [2018-07-25 08:39:26,300 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 08:39:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2018-07-25 08:39:28,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3422. [2018-07-25 08:39:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3422 states. [2018-07-25 08:39:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 5023 transitions. [2018-07-25 08:39:28,155 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 5023 transitions. Word has length 29 [2018-07-25 08:39:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:28,155 INFO L472 AbstractCegarLoop]: Abstraction has 3422 states and 5023 transitions. [2018-07-25 08:39:28,155 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:39:28,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 5023 transitions. [2018-07-25 08:39:28,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:39:28,158 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:28,158 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 08:39:28,159 INFO L415 AbstractCegarLoop]: === Iteration 87 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:28,159 INFO L82 PathProgramCache]: Analyzing trace with hash 904319839, now seen corresponding path program 2 times [2018-07-25 08:39:28,159 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:28,174 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 08:39:28,174 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:28,174 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:39:28,175 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:39:28,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:39:28,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:39:28,175 INFO L87 Difference]: Start difference. First operand 3422 states and 5023 transitions. Second operand 9 states. [2018-07-25 08:39:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:30,226 INFO L93 Difference]: Finished difference Result 3641 states and 5314 transitions. [2018-07-25 08:39:30,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:39:30,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-07-25 08:39:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:30,230 INFO L225 Difference]: With dead ends: 3641 [2018-07-25 08:39:30,231 INFO L226 Difference]: Without dead ends: 3639 [2018-07-25 08:39:30,231 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 08:39:30,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2018-07-25 08:39:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3420. [2018-07-25 08:39:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3420 states. [2018-07-25 08:39:32,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 5021 transitions. [2018-07-25 08:39:32,083 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 5021 transitions. Word has length 29 [2018-07-25 08:39:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:32,084 INFO L472 AbstractCegarLoop]: Abstraction has 3420 states and 5021 transitions. [2018-07-25 08:39:32,084 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:39:32,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 5021 transitions. [2018-07-25 08:39:32,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:39:32,086 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:32,086 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 08:39:32,086 INFO L415 AbstractCegarLoop]: === Iteration 88 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:32,087 INFO L82 PathProgramCache]: Analyzing trace with hash 987070039, now seen corresponding path program 3 times [2018-07-25 08:39:32,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:32,103 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 08:39:32,104 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:32,104 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:39:32,104 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:39:32,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:39:32,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:39:32,104 INFO L87 Difference]: Start difference. First operand 3420 states and 5021 transitions. Second operand 12 states. [2018-07-25 08:39:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:34,342 INFO L93 Difference]: Finished difference Result 3801 states and 5543 transitions. [2018-07-25 08:39:34,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:39:34,342 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-25 08:39:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:34,346 INFO L225 Difference]: With dead ends: 3801 [2018-07-25 08:39:34,346 INFO L226 Difference]: Without dead ends: 3799 [2018-07-25 08:39:34,347 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 08:39:34,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2018-07-25 08:39:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 3547. [2018-07-25 08:39:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3547 states. [2018-07-25 08:39:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 5208 transitions. [2018-07-25 08:39:36,312 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 5208 transitions. Word has length 29 [2018-07-25 08:39:36,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:36,312 INFO L472 AbstractCegarLoop]: Abstraction has 3547 states and 5208 transitions. [2018-07-25 08:39:36,312 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:39:36,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 5208 transitions. [2018-07-25 08:39:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:39:36,315 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:36,315 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 08:39:36,315 INFO L415 AbstractCegarLoop]: === Iteration 89 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:36,315 INFO L82 PathProgramCache]: Analyzing trace with hash 983131868, now seen corresponding path program 1 times [2018-07-25 08:39:36,315 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:36,331 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 08:39:36,331 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:36,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:39:36,331 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:39:36,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:39:36,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:39:36,332 INFO L87 Difference]: Start difference. First operand 3547 states and 5208 transitions. Second operand 11 states. [2018-07-25 08:39:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:38,946 INFO L93 Difference]: Finished difference Result 3952 states and 5785 transitions. [2018-07-25 08:39:38,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:39:38,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 08:39:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:38,950 INFO L225 Difference]: With dead ends: 3952 [2018-07-25 08:39:38,950 INFO L226 Difference]: Without dead ends: 3950 [2018-07-25 08:39:38,950 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 08:39:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2018-07-25 08:39:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3525. [2018-07-25 08:39:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3525 states. [2018-07-25 08:39:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5180 transitions. [2018-07-25 08:39:41,027 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5180 transitions. Word has length 29 [2018-07-25 08:39:41,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:41,027 INFO L472 AbstractCegarLoop]: Abstraction has 3525 states and 5180 transitions. [2018-07-25 08:39:41,027 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:39:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5180 transitions. [2018-07-25 08:39:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:39:41,029 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:41,029 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 08:39:41,030 INFO L415 AbstractCegarLoop]: === Iteration 90 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:41,030 INFO L82 PathProgramCache]: Analyzing trace with hash 983131484, now seen corresponding path program 3 times [2018-07-25 08:39:41,030 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:41,044 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 08:39:41,045 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:41,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:39:41,045 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:39:41,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:39:41,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:39:41,045 INFO L87 Difference]: Start difference. First operand 3525 states and 5180 transitions. Second operand 11 states. [2018-07-25 08:39:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:43,553 INFO L93 Difference]: Finished difference Result 3893 states and 5708 transitions. [2018-07-25 08:39:43,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:39:43,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 08:39:43,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:43,559 INFO L225 Difference]: With dead ends: 3893 [2018-07-25 08:39:43,559 INFO L226 Difference]: Without dead ends: 3891 [2018-07-25 08:39:43,560 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 08:39:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2018-07-25 08:39:45,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3651. [2018-07-25 08:39:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3651 states. [2018-07-25 08:39:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 5369 transitions. [2018-07-25 08:39:45,735 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 5369 transitions. Word has length 29 [2018-07-25 08:39:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:45,735 INFO L472 AbstractCegarLoop]: Abstraction has 3651 states and 5369 transitions. [2018-07-25 08:39:45,735 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:39:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 5369 transitions. [2018-07-25 08:39:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:39:45,738 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:45,738 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 08:39:45,738 INFO L415 AbstractCegarLoop]: === Iteration 91 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:45,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1481907752, now seen corresponding path program 1 times [2018-07-25 08:39:45,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:45,753 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 08:39:45,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:45,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:39:45,753 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:39:45,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:39:45,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:39:45,754 INFO L87 Difference]: Start difference. First operand 3651 states and 5369 transitions. Second operand 11 states. [2018-07-25 08:39:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:49,062 INFO L93 Difference]: Finished difference Result 4812 states and 7078 transitions. [2018-07-25 08:39:49,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:39:49,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 08:39:49,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:49,068 INFO L225 Difference]: With dead ends: 4812 [2018-07-25 08:39:49,068 INFO L226 Difference]: Without dead ends: 4810 [2018-07-25 08:39:49,069 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 08:39:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2018-07-25 08:39:51,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4121. [2018-07-25 08:39:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4121 states. [2018-07-25 08:39:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 6087 transitions. [2018-07-25 08:39:51,430 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 6087 transitions. Word has length 29 [2018-07-25 08:39:51,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:51,430 INFO L472 AbstractCegarLoop]: Abstraction has 4121 states and 6087 transitions. [2018-07-25 08:39:51,430 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:39:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 6087 transitions. [2018-07-25 08:39:51,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:39:51,433 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:51,433 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 08:39:51,433 INFO L415 AbstractCegarLoop]: === Iteration 92 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:51,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1420688361, now seen corresponding path program 1 times [2018-07-25 08:39:51,433 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:51,453 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 08:39:51,453 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:51,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:39:51,453 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:39:51,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:39:51,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:39:51,454 INFO L87 Difference]: Start difference. First operand 4121 states and 6087 transitions. Second operand 11 states. [2018-07-25 08:39:54,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:54,978 INFO L93 Difference]: Finished difference Result 4922 states and 7248 transitions. [2018-07-25 08:39:54,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:39:54,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 08:39:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:54,984 INFO L225 Difference]: With dead ends: 4922 [2018-07-25 08:39:54,984 INFO L226 Difference]: Without dead ends: 4920 [2018-07-25 08:39:54,985 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 08:39:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2018-07-25 08:39:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4061. [2018-07-25 08:39:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4061 states. [2018-07-25 08:39:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 5988 transitions. [2018-07-25 08:39:57,377 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 5988 transitions. Word has length 29 [2018-07-25 08:39:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:57,377 INFO L472 AbstractCegarLoop]: Abstraction has 4061 states and 5988 transitions. [2018-07-25 08:39:57,377 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:39:57,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 5988 transitions. [2018-07-25 08:39:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:39:57,380 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:57,380 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 08:39:57,380 INFO L415 AbstractCegarLoop]: === Iteration 93 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash -474699493, now seen corresponding path program 4 times [2018-07-25 08:39:57,381 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:57,401 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 08:39:57,401 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:57,401 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:39:57,402 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:39:57,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:39:57,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:39:57,402 INFO L87 Difference]: Start difference. First operand 4061 states and 5988 transitions. Second operand 12 states. [2018-07-25 08:40:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:00,252 INFO L93 Difference]: Finished difference Result 4233 states and 6241 transitions. [2018-07-25 08:40:00,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:40:00,252 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-25 08:40:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:00,257 INFO L225 Difference]: With dead ends: 4233 [2018-07-25 08:40:00,257 INFO L226 Difference]: Without dead ends: 4232 [2018-07-25 08:40:00,258 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 08:40:00,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2018-07-25 08:40:02,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 3882. [2018-07-25 08:40:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3882 states. [2018-07-25 08:40:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5730 transitions. [2018-07-25 08:40:02,618 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5730 transitions. Word has length 29 [2018-07-25 08:40:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:02,618 INFO L472 AbstractCegarLoop]: Abstraction has 3882 states and 5730 transitions. [2018-07-25 08:40:02,618 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:40:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5730 transitions. [2018-07-25 08:40:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:02,621 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:02,621 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 08:40:02,621 INFO L415 AbstractCegarLoop]: === Iteration 94 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2006031348, now seen corresponding path program 1 times [2018-07-25 08:40:02,621 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:02,637 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 08:40:02,637 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:02,638 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:40:02,638 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:40:02,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:40:02,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:40:02,638 INFO L87 Difference]: Start difference. First operand 3882 states and 5730 transitions. Second operand 11 states. [2018-07-25 08:40:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:05,571 INFO L93 Difference]: Finished difference Result 4266 states and 6268 transitions. [2018-07-25 08:40:05,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:40:05,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 08:40:05,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:05,577 INFO L225 Difference]: With dead ends: 4266 [2018-07-25 08:40:05,577 INFO L226 Difference]: Without dead ends: 4264 [2018-07-25 08:40:05,578 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 08:40:05,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2018-07-25 08:40:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 3417. [2018-07-25 08:40:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3417 states. [2018-07-25 08:40:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 5047 transitions. [2018-07-25 08:40:07,754 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 5047 transitions. Word has length 29 [2018-07-25 08:40:07,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:07,754 INFO L472 AbstractCegarLoop]: Abstraction has 3417 states and 5047 transitions. [2018-07-25 08:40:07,754 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:40:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 5047 transitions. [2018-07-25 08:40:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:07,756 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:07,756 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 08:40:07,757 INFO L415 AbstractCegarLoop]: === Iteration 95 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:07,757 INFO L82 PathProgramCache]: Analyzing trace with hash -478637664, now seen corresponding path program 2 times [2018-07-25 08:40:07,757 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:07,779 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 08:40:07,780 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:07,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:40:07,780 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:40:07,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:40:07,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:40:07,781 INFO L87 Difference]: Start difference. First operand 3417 states and 5047 transitions. Second operand 12 states. [2018-07-25 08:40:11,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:11,353 INFO L93 Difference]: Finished difference Result 4483 states and 6607 transitions. [2018-07-25 08:40:11,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:40:11,354 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-25 08:40:11,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:11,360 INFO L225 Difference]: With dead ends: 4483 [2018-07-25 08:40:11,360 INFO L226 Difference]: Without dead ends: 4481 [2018-07-25 08:40:11,361 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 08:40:11,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2018-07-25 08:40:13,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 3901. [2018-07-25 08:40:13,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3901 states. [2018-07-25 08:40:13,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 5762 transitions. [2018-07-25 08:40:13,903 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 5762 transitions. Word has length 29 [2018-07-25 08:40:13,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:13,903 INFO L472 AbstractCegarLoop]: Abstraction has 3901 states and 5762 transitions. [2018-07-25 08:40:13,903 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:40:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 5762 transitions. [2018-07-25 08:40:13,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:13,905 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:13,905 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 08:40:13,906 INFO L415 AbstractCegarLoop]: === Iteration 96 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:13,906 INFO L82 PathProgramCache]: Analyzing trace with hash -478638048, now seen corresponding path program 4 times [2018-07-25 08:40:13,906 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:13,921 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 08:40:13,921 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:13,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:40:13,922 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:40:13,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:40:13,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:40:13,922 INFO L87 Difference]: Start difference. First operand 3901 states and 5762 transitions. Second operand 11 states. [2018-07-25 08:40:17,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:17,273 INFO L93 Difference]: Finished difference Result 4463 states and 6547 transitions. [2018-07-25 08:40:17,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:40:17,274 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-07-25 08:40:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:17,279 INFO L225 Difference]: With dead ends: 4463 [2018-07-25 08:40:17,279 INFO L226 Difference]: Without dead ends: 4461 [2018-07-25 08:40:17,281 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 08:40:17,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2018-07-25 08:40:19,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 3965. [2018-07-25 08:40:19,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3965 states. [2018-07-25 08:40:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5852 transitions. [2018-07-25 08:40:19,865 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5852 transitions. Word has length 29 [2018-07-25 08:40:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:19,865 INFO L472 AbstractCegarLoop]: Abstraction has 3965 states and 5852 transitions. [2018-07-25 08:40:19,865 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:40:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5852 transitions. [2018-07-25 08:40:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:19,867 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:19,868 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 08:40:19,868 INFO L415 AbstractCegarLoop]: === Iteration 97 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:19,868 INFO L82 PathProgramCache]: Analyzing trace with hash 570846522, now seen corresponding path program 1 times [2018-07-25 08:40:19,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:19,885 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 08:40:19,885 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:19,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:40:19,885 INFO L451 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-25 08:40:19,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-25 08:40:19,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-07-25 08:40:19,886 INFO L87 Difference]: Start difference. First operand 3965 states and 5852 transitions. Second operand 13 states. [2018-07-25 08:40:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:23,963 INFO L93 Difference]: Finished difference Result 5093 states and 7513 transitions. [2018-07-25 08:40:23,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:40:23,963 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2018-07-25 08:40:23,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:23,970 INFO L225 Difference]: With dead ends: 5093 [2018-07-25 08:40:23,970 INFO L226 Difference]: Without dead ends: 5091 [2018-07-25 08:40:23,971 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 08:40:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2018-07-25 08:40:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 4401. [2018-07-25 08:40:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4401 states. [2018-07-25 08:40:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 6510 transitions. [2018-07-25 08:40:26,812 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 6510 transitions. Word has length 29 [2018-07-25 08:40:26,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:26,812 INFO L472 AbstractCegarLoop]: Abstraction has 4401 states and 6510 transitions. [2018-07-25 08:40:26,812 INFO L473 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-25 08:40:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 6510 transitions. [2018-07-25 08:40:26,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:26,816 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:26,817 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 08:40:26,817 INFO L415 AbstractCegarLoop]: === Iteration 98 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:26,817 INFO L82 PathProgramCache]: Analyzing trace with hash -540945094, now seen corresponding path program 2 times [2018-07-25 08:40:26,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:26,839 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 08:40:26,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:26,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:40:26,840 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:40:26,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:40:26,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:40:26,841 INFO L87 Difference]: Start difference. First operand 4401 states and 6510 transitions. Second operand 10 states. [2018-07-25 08:40:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:30,185 INFO L93 Difference]: Finished difference Result 4721 states and 6944 transitions. [2018-07-25 08:40:30,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:40:30,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-25 08:40:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:30,192 INFO L225 Difference]: With dead ends: 4721 [2018-07-25 08:40:30,192 INFO L226 Difference]: Without dead ends: 4719 [2018-07-25 08:40:30,193 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 08:40:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4719 states. [2018-07-25 08:40:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4719 to 4507. [2018-07-25 08:40:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4507 states. [2018-07-25 08:40:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4507 states to 4507 states and 6661 transitions. [2018-07-25 08:40:33,189 INFO L78 Accepts]: Start accepts. Automaton has 4507 states and 6661 transitions. Word has length 29 [2018-07-25 08:40:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:33,189 INFO L472 AbstractCegarLoop]: Abstraction has 4507 states and 6661 transitions. [2018-07-25 08:40:33,189 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:40:33,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4507 states and 6661 transitions. [2018-07-25 08:40:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:33,192 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:33,192 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 08:40:33,193 INFO L415 AbstractCegarLoop]: === Iteration 99 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:33,193 INFO L82 PathProgramCache]: Analyzing trace with hash 172278311, now seen corresponding path program 2 times [2018-07-25 08:40:33,193 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:33,205 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 08:40:33,205 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:33,205 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:40:33,206 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:40:33,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:40:33,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:40:33,206 INFO L87 Difference]: Start difference. First operand 4507 states and 6661 transitions. Second operand 9 states. [2018-07-25 08:40:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:36,542 INFO L93 Difference]: Finished difference Result 4725 states and 6951 transitions. [2018-07-25 08:40:36,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:40:36,542 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-07-25 08:40:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:36,549 INFO L225 Difference]: With dead ends: 4725 [2018-07-25 08:40:36,549 INFO L226 Difference]: Without dead ends: 4723 [2018-07-25 08:40:36,551 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 08:40:36,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2018-07-25 08:40:39,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4504. [2018-07-25 08:40:39,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4504 states. [2018-07-25 08:40:39,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 6658 transitions. [2018-07-25 08:40:39,716 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 6658 transitions. Word has length 29 [2018-07-25 08:40:39,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:39,716 INFO L472 AbstractCegarLoop]: Abstraction has 4504 states and 6658 transitions. [2018-07-25 08:40:39,716 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:40:39,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 6658 transitions. [2018-07-25 08:40:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:39,719 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:39,719 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 08:40:39,720 INFO L415 AbstractCegarLoop]: === Iteration 100 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:39,720 INFO L82 PathProgramCache]: Analyzing trace with hash -182803664, now seen corresponding path program 1 times [2018-07-25 08:40:39,720 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:39,734 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 08:40:39,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:39,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:40:39,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:40:39,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:40:39,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:40:39,735 INFO L87 Difference]: Start difference. First operand 4504 states and 6658 transitions. Second operand 10 states. [2018-07-25 08:40:43,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:43,156 INFO L93 Difference]: Finished difference Result 4778 states and 7053 transitions. [2018-07-25 08:40:43,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-25 08:40:43,157 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-07-25 08:40:43,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:43,164 INFO L225 Difference]: With dead ends: 4778 [2018-07-25 08:40:43,164 INFO L226 Difference]: Without dead ends: 4776 [2018-07-25 08:40:43,166 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 08:40:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2018-07-25 08:40:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 4516. [2018-07-25 08:40:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4516 states. [2018-07-25 08:40:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 6674 transitions. [2018-07-25 08:40:46,244 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 6674 transitions. Word has length 29 [2018-07-25 08:40:46,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:46,244 INFO L472 AbstractCegarLoop]: Abstraction has 4516 states and 6674 transitions. [2018-07-25 08:40:46,244 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:40:46,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 6674 transitions. [2018-07-25 08:40:46,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:46,247 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:46,247 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 08:40:46,247 INFO L415 AbstractCegarLoop]: === Iteration 101 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:46,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1089104597, now seen corresponding path program 3 times [2018-07-25 08:40:46,248 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:46,270 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 08:40:46,270 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:46,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:40:46,271 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:40:46,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:40:46,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:40:46,271 INFO L87 Difference]: Start difference. First operand 4516 states and 6674 transitions. Second operand 12 states. [2018-07-25 08:40:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:49,724 INFO L93 Difference]: Finished difference Result 4905 states and 7210 transitions. [2018-07-25 08:40:49,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:40:49,725 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-07-25 08:40:49,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:49,730 INFO L225 Difference]: With dead ends: 4905 [2018-07-25 08:40:49,730 INFO L226 Difference]: Without dead ends: 4903 [2018-07-25 08:40:49,731 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 08:40:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2018-07-25 08:40:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4651. [2018-07-25 08:40:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2018-07-25 08:40:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 6875 transitions. [2018-07-25 08:40:52,833 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 6875 transitions. Word has length 29 [2018-07-25 08:40:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:52,834 INFO L472 AbstractCegarLoop]: Abstraction has 4651 states and 6875 transitions. [2018-07-25 08:40:52,834 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:40:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 6875 transitions. [2018-07-25 08:40:52,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-25 08:40:52,837 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:52,837 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 08:40:52,837 INFO L415 AbstractCegarLoop]: === Iteration 102 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:52,837 INFO L82 PathProgramCache]: Analyzing trace with hash -730963167, now seen corresponding path program 1 times [2018-07-25 08:40:52,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:52,856 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 08:40:52,856 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:52,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:40:52,857 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:40:52,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:40:52,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:40:52,857 INFO L87 Difference]: Start difference. First operand 4651 states and 6875 transitions. Second operand 11 states. Received shutdown request... [2018-07-25 08:40:54,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:40:54,352 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:40:54,358 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:40:54,359 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:40:54 BoogieIcfgContainer [2018-07-25 08:40:54,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:40:54,360 INFO L168 Benchmark]: Toolchain (without parser) took 253260.49 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 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 501.9 MB. Max. memory is 7.1 GB. [2018-07-25 08:40:54,361 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:40:54,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:40:54,362 INFO L168 Benchmark]: Boogie Preprocessor took 22.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:40:54,363 INFO L168 Benchmark]: RCFGBuilder took 265.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:40:54,363 INFO L168 Benchmark]: TraceAbstraction took 252924.79 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 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 491.4 MB. Max. memory is 7.1 GB. [2018-07-25 08:40:54,366 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.65 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 22.80 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 265.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 252924.79 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 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 491.4 MB. 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 (1234 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 (1234 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 (1234 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 (1234 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 4 error locations. TIMEOUT Result, 252.8s OverallTime, 102 OverallIterations, 3 TraceHistogramMax, 141.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6497 SDtfs, 12349 SDslu, 9718 SDs, 0 SdLazy, 42475 SolverSat, 11213 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2522 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 1978 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8715 ImplicationChecksByTransitivity, 2.7s 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: 108.3s AutomataMinimizationTime, 101 MinimizatonAttempts, 23828 StatesRemovedByMinimization, 99 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s 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_08-40-54-380.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_08-40-54-380.csv Completed graceful shutdown