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_out_Reals.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:36:12,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:36:12,570 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:36:12,586 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:36:12,587 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:36:12,588 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:36:12,590 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:36:12,594 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:36:12,596 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:36:12,597 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:36:12,599 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:36:12,601 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:36:12,602 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:36:12,603 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:36:12,605 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:36:12,608 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:36:12,609 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:36:12,620 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:36:12,623 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:36:12,625 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:36:12,626 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:36:12,627 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:36:12,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:36:12,629 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:36:12,630 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:36:12,631 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:36:12,632 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:36:12,632 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:36:12,633 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:36:12,634 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:36:12,634 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:36:12,635 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 08:36:12,635 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 08:36:12,636 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 08:36:12,637 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 08:36:12,637 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 08:36:12,638 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:36:12,661 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:36:12,662 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:36:12,667 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:36:12,667 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:36:12,667 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:36:12,668 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:36:12,668 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:36:12,668 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:36:12,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:36:12,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:36:12,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:36:12,741 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:36:12,742 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:36:12,743 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_out_Reals.bpl [2018-07-25 08:36:12,743 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_out_Reals.bpl' [2018-07-25 08:36:12,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:36:12,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:36:12,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:36:12,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:36:12,852 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:36:12,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/1) ... [2018-07-25 08:36:12,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/1) ... [2018-07-25 08:36:12,911 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 08:36:12,912 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 08:36:12,912 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 08:36:12,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:36:12,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:36:12,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:36:12,919 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:36:12,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/1) ... [2018-07-25 08:36:12,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/1) ... [2018-07-25 08:36:12,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/1) ... [2018-07-25 08:36:12,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/1) ... [2018-07-25 08:36:12,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/1) ... [2018-07-25 08:36:12,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/1) ... [2018-07-25 08:36:12,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/1) ... [2018-07-25 08:36:12,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:36:12,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:36:12,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:36:12,991 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:36:12,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/1) ... [2018-07-25 08:36:13,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-07-25 08:36:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-07-25 08:36:13,101 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-07-25 08:36:13,427 INFO L270 CfgBuilder]: Using library mode [2018-07-25 08:36:13,430 INFO L202 PluginConnector]: Adding new model threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:36:13 BoogieIcfgContainer [2018-07-25 08:36:13,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:36:13,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:36:13,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:36:13,445 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:36:13,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:36:12" (1/2) ... [2018-07-25 08:36:13,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1797d4 and model type threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:36:13, skipping insertion in model container [2018-07-25 08:36:13,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:36:13" (2/2) ... [2018-07-25 08:36:13,454 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_out_Reals.bpl [2018-07-25 08:36:13,472 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:36:13,484 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2018-07-25 08:36:13,533 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:36:13,534 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:36:13,534 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:36:13,535 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:36:13,535 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:36:13,535 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:36:13,535 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:36:13,535 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:36:13,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:36:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-07-25 08:36:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:36:13,567 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:13,568 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:13,571 INFO L415 AbstractCegarLoop]: === Iteration 1 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:13,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2113132074, now seen corresponding path program 1 times [2018-07-25 08:36:13,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:13,697 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 08:36:13,700 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:13,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:36:13,704 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:36:13,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:36:13,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:36:13,720 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 6 states. [2018-07-25 08:36:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:14,376 INFO L93 Difference]: Finished difference Result 163 states and 353 transitions. [2018-07-25 08:36:14,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:36:14,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-25 08:36:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:14,398 INFO L225 Difference]: With dead ends: 163 [2018-07-25 08:36:14,399 INFO L226 Difference]: Without dead ends: 158 [2018-07-25 08:36:14,403 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-07-25 08:36:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 93. [2018-07-25 08:36:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-07-25 08:36:14,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 195 transitions. [2018-07-25 08:36:14,507 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 195 transitions. Word has length 7 [2018-07-25 08:36:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:14,508 INFO L472 AbstractCegarLoop]: Abstraction has 93 states and 195 transitions. [2018-07-25 08:36:14,508 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:36:14,509 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 195 transitions. [2018-07-25 08:36:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 08:36:14,510 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:14,510 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:14,511 INFO L415 AbstractCegarLoop]: === Iteration 2 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:14,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1894705935, now seen corresponding path program 1 times [2018-07-25 08:36:14,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:14,545 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 08:36:14,546 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:14,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:36:14,548 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:36:14,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:36:14,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:36:14,554 INFO L87 Difference]: Start difference. First operand 93 states and 195 transitions. Second operand 6 states. [2018-07-25 08:36:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:14,895 INFO L93 Difference]: Finished difference Result 188 states and 413 transitions. [2018-07-25 08:36:14,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-25 08:36:14,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-25 08:36:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:14,899 INFO L225 Difference]: With dead ends: 188 [2018-07-25 08:36:14,899 INFO L226 Difference]: Without dead ends: 183 [2018-07-25 08:36:14,900 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:14,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-07-25 08:36:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 118. [2018-07-25 08:36:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-07-25 08:36:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 255 transitions. [2018-07-25 08:36:14,926 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 255 transitions. Word has length 7 [2018-07-25 08:36:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:14,927 INFO L472 AbstractCegarLoop]: Abstraction has 118 states and 255 transitions. [2018-07-25 08:36:14,927 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:36:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 255 transitions. [2018-07-25 08:36:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:36:14,929 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:14,929 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:14,930 INFO L415 AbstractCegarLoop]: === Iteration 3 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:14,931 INFO L82 PathProgramCache]: Analyzing trace with hash 672968560, now seen corresponding path program 1 times [2018-07-25 08:36:14,931 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:14,955 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 08:36:14,955 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:14,957 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 08:36:14,957 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:36:14,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:36:14,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:14,960 INFO L87 Difference]: Start difference. First operand 118 states and 255 transitions. Second operand 7 states. [2018-07-25 08:36:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:15,308 INFO L93 Difference]: Finished difference Result 283 states and 637 transitions. [2018-07-25 08:36:15,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:36:15,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2018-07-25 08:36:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:15,314 INFO L225 Difference]: With dead ends: 283 [2018-07-25 08:36:15,314 INFO L226 Difference]: Without dead ends: 278 [2018-07-25 08:36:15,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:36:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-07-25 08:36:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 147. [2018-07-25 08:36:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-07-25 08:36:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 323 transitions. [2018-07-25 08:36:15,365 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 323 transitions. Word has length 9 [2018-07-25 08:36:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:15,368 INFO L472 AbstractCegarLoop]: Abstraction has 147 states and 323 transitions. [2018-07-25 08:36:15,368 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:36:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 323 transitions. [2018-07-25 08:36:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-07-25 08:36:15,370 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:15,370 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:15,373 INFO L415 AbstractCegarLoop]: === Iteration 4 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2061636985, now seen corresponding path program 1 times [2018-07-25 08:36:15,374 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:15,405 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 08:36:15,405 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:15,406 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 08:36:15,406 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:36:15,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:36:15,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:15,407 INFO L87 Difference]: Start difference. First operand 147 states and 323 transitions. Second operand 7 states. [2018-07-25 08:36:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:15,734 INFO L93 Difference]: Finished difference Result 387 states and 869 transitions. [2018-07-25 08:36:15,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-25 08:36:15,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2018-07-25 08:36:15,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:15,738 INFO L225 Difference]: With dead ends: 387 [2018-07-25 08:36:15,739 INFO L226 Difference]: Without dead ends: 375 [2018-07-25 08:36:15,740 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-07-25 08:36:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-07-25 08:36:15,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 203. [2018-07-25 08:36:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-07-25 08:36:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 455 transitions. [2018-07-25 08:36:15,787 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 455 transitions. Word has length 9 [2018-07-25 08:36:15,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:15,789 INFO L472 AbstractCegarLoop]: Abstraction has 203 states and 455 transitions. [2018-07-25 08:36:15,790 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:36:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 455 transitions. [2018-07-25 08:36:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:15,793 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:15,793 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:15,796 INFO L415 AbstractCegarLoop]: === Iteration 5 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:15,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1603442246, now seen corresponding path program 1 times [2018-07-25 08:36:15,797 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:15,821 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 08:36:15,821 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:15,822 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:15,822 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:15,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:15,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:15,823 INFO L87 Difference]: Start difference. First operand 203 states and 455 transitions. Second operand 9 states. [2018-07-25 08:36:16,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:16,769 INFO L93 Difference]: Finished difference Result 725 states and 1622 transitions. [2018-07-25 08:36:16,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:36:16,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:36:16,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:16,776 INFO L225 Difference]: With dead ends: 725 [2018-07-25 08:36:16,776 INFO L226 Difference]: Without dead ends: 717 [2018-07-25 08:36:16,778 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:36:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2018-07-25 08:36:16,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 354. [2018-07-25 08:36:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-07-25 08:36:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 843 transitions. [2018-07-25 08:36:16,885 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 843 transitions. Word has length 12 [2018-07-25 08:36:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:16,886 INFO L472 AbstractCegarLoop]: Abstraction has 354 states and 843 transitions. [2018-07-25 08:36:16,886 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 843 transitions. [2018-07-25 08:36:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:16,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:16,888 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:16,892 INFO L415 AbstractCegarLoop]: === Iteration 6 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:16,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1573889574, now seen corresponding path program 1 times [2018-07-25 08:36:16,893 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:16,919 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 08:36:16,920 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:16,920 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:16,921 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:16,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:16,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:16,922 INFO L87 Difference]: Start difference. First operand 354 states and 843 transitions. Second operand 9 states. [2018-07-25 08:36:18,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:18,221 INFO L93 Difference]: Finished difference Result 1008 states and 2278 transitions. [2018-07-25 08:36:18,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:36:18,222 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:36:18,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:18,231 INFO L225 Difference]: With dead ends: 1008 [2018-07-25 08:36:18,231 INFO L226 Difference]: Without dead ends: 1000 [2018-07-25 08:36:18,234 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:36:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2018-07-25 08:36:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 364. [2018-07-25 08:36:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-07-25 08:36:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 868 transitions. [2018-07-25 08:36:18,363 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 868 transitions. Word has length 12 [2018-07-25 08:36:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:18,364 INFO L472 AbstractCegarLoop]: Abstraction has 364 states and 868 transitions. [2018-07-25 08:36:18,364 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 868 transitions. [2018-07-25 08:36:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:18,366 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:18,366 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:18,367 INFO L415 AbstractCegarLoop]: === Iteration 7 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:18,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1576689928, now seen corresponding path program 1 times [2018-07-25 08:36:18,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:18,401 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 08:36:18,401 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:18,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:18,403 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:18,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:18,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:18,403 INFO L87 Difference]: Start difference. First operand 364 states and 868 transitions. Second operand 9 states. [2018-07-25 08:36:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:19,561 INFO L93 Difference]: Finished difference Result 924 states and 2097 transitions. [2018-07-25 08:36:19,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:36:19,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:36:19,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:19,569 INFO L225 Difference]: With dead ends: 924 [2018-07-25 08:36:19,569 INFO L226 Difference]: Without dead ends: 916 [2018-07-25 08:36:19,571 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:36:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2018-07-25 08:36:19,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 394. [2018-07-25 08:36:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-07-25 08:36:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 957 transitions. [2018-07-25 08:36:19,718 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 957 transitions. Word has length 12 [2018-07-25 08:36:19,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:19,718 INFO L472 AbstractCegarLoop]: Abstraction has 394 states and 957 transitions. [2018-07-25 08:36:19,718 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 957 transitions. [2018-07-25 08:36:19,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:19,721 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:19,721 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:19,722 INFO L415 AbstractCegarLoop]: === Iteration 8 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:19,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1576587783, now seen corresponding path program 1 times [2018-07-25 08:36:19,723 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:19,744 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 08:36:19,744 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:19,744 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:19,745 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:19,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:19,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:19,746 INFO L87 Difference]: Start difference. First operand 394 states and 957 transitions. Second operand 9 states. [2018-07-25 08:36:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:20,763 INFO L93 Difference]: Finished difference Result 791 states and 1795 transitions. [2018-07-25 08:36:20,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:36:20,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:36:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:20,769 INFO L225 Difference]: With dead ends: 791 [2018-07-25 08:36:20,770 INFO L226 Difference]: Without dead ends: 783 [2018-07-25 08:36:20,771 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:36:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2018-07-25 08:36:20,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 392. [2018-07-25 08:36:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2018-07-25 08:36:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 950 transitions. [2018-07-25 08:36:20,964 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 950 transitions. Word has length 12 [2018-07-25 08:36:20,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:20,964 INFO L472 AbstractCegarLoop]: Abstraction has 392 states and 950 transitions. [2018-07-25 08:36:20,964 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:20,965 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 950 transitions. [2018-07-25 08:36:20,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:20,966 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:20,966 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:20,968 INFO L415 AbstractCegarLoop]: === Iteration 9 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:20,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1733624339, now seen corresponding path program 1 times [2018-07-25 08:36:20,968 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:20,990 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 08:36:20,991 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:20,991 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:20,991 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:20,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:20,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:20,993 INFO L87 Difference]: Start difference. First operand 392 states and 950 transitions. Second operand 9 states. [2018-07-25 08:36:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:22,286 INFO L93 Difference]: Finished difference Result 1040 states and 2400 transitions. [2018-07-25 08:36:22,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:36:22,287 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:36:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:22,295 INFO L225 Difference]: With dead ends: 1040 [2018-07-25 08:36:22,295 INFO L226 Difference]: Without dead ends: 1032 [2018-07-25 08:36:22,297 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:36:22,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2018-07-25 08:36:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 397. [2018-07-25 08:36:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-07-25 08:36:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 962 transitions. [2018-07-25 08:36:22,494 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 962 transitions. Word has length 12 [2018-07-25 08:36:22,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:22,495 INFO L472 AbstractCegarLoop]: Abstraction has 397 states and 962 transitions. [2018-07-25 08:36:22,495 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 962 transitions. [2018-07-25 08:36:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:22,498 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:22,498 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:22,499 INFO L415 AbstractCegarLoop]: === Iteration 10 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1736424693, now seen corresponding path program 1 times [2018-07-25 08:36:22,499 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:22,520 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 08:36:22,520 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:22,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:22,521 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:22,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:22,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:22,522 INFO L87 Difference]: Start difference. First operand 397 states and 962 transitions. Second operand 9 states. [2018-07-25 08:36:24,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:24,044 INFO L93 Difference]: Finished difference Result 1166 states and 2697 transitions. [2018-07-25 08:36:24,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-25 08:36:24,044 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:36:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:24,052 INFO L225 Difference]: With dead ends: 1166 [2018-07-25 08:36:24,053 INFO L226 Difference]: Without dead ends: 1158 [2018-07-25 08:36:24,055 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=365, Invalid=967, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:36:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2018-07-25 08:36:24,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 427. [2018-07-25 08:36:24,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-25 08:36:24,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1051 transitions. [2018-07-25 08:36:24,262 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1051 transitions. Word has length 12 [2018-07-25 08:36:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:24,263 INFO L472 AbstractCegarLoop]: Abstraction has 427 states and 1051 transitions. [2018-07-25 08:36:24,263 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:24,263 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1051 transitions. [2018-07-25 08:36:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:24,264 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:24,264 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:24,265 INFO L415 AbstractCegarLoop]: === Iteration 11 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:24,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1736322548, now seen corresponding path program 1 times [2018-07-25 08:36:24,265 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:24,283 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 08:36:24,284 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:24,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:24,285 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:24,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:24,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:24,285 INFO L87 Difference]: Start difference. First operand 427 states and 1051 transitions. Second operand 9 states. [2018-07-25 08:36:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:25,780 INFO L93 Difference]: Finished difference Result 1127 states and 2616 transitions. [2018-07-25 08:36:25,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:36:25,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:36:25,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:25,788 INFO L225 Difference]: With dead ends: 1127 [2018-07-25 08:36:25,789 INFO L226 Difference]: Without dead ends: 1119 [2018-07-25 08:36:25,791 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2018-07-25 08:36:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2018-07-25 08:36:26,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 387. [2018-07-25 08:36:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-07-25 08:36:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 937 transitions. [2018-07-25 08:36:26,022 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 937 transitions. Word has length 12 [2018-07-25 08:36:26,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:26,022 INFO L472 AbstractCegarLoop]: Abstraction has 387 states and 937 transitions. [2018-07-25 08:36:26,022 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 937 transitions. [2018-07-25 08:36:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:26,023 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:26,023 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:26,024 INFO L415 AbstractCegarLoop]: === Iteration 12 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:26,024 INFO L82 PathProgramCache]: Analyzing trace with hash -608805552, now seen corresponding path program 1 times [2018-07-25 08:36:26,025 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:26,044 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 08:36:26,045 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:26,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:26,045 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:26,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:26,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:26,046 INFO L87 Difference]: Start difference. First operand 387 states and 937 transitions. Second operand 9 states. [2018-07-25 08:36:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:27,411 INFO L93 Difference]: Finished difference Result 975 states and 2260 transitions. [2018-07-25 08:36:27,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:36:27,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:36:27,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:27,418 INFO L225 Difference]: With dead ends: 975 [2018-07-25 08:36:27,418 INFO L226 Difference]: Without dead ends: 967 [2018-07-25 08:36:27,420 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:36:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-07-25 08:36:27,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 411. [2018-07-25 08:36:27,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-07-25 08:36:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 1004 transitions. [2018-07-25 08:36:27,686 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 1004 transitions. Word has length 12 [2018-07-25 08:36:27,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:27,688 INFO L472 AbstractCegarLoop]: Abstraction has 411 states and 1004 transitions. [2018-07-25 08:36:27,688 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 1004 transitions. [2018-07-25 08:36:27,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:27,689 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:27,689 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:27,690 INFO L415 AbstractCegarLoop]: === Iteration 13 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:27,690 INFO L82 PathProgramCache]: Analyzing trace with hash -608703407, now seen corresponding path program 1 times [2018-07-25 08:36:27,690 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:27,708 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 08:36:27,708 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:27,708 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:27,709 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:27,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:27,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:27,710 INFO L87 Difference]: Start difference. First operand 411 states and 1004 transitions. Second operand 9 states. [2018-07-25 08:36:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:29,353 INFO L93 Difference]: Finished difference Result 1011 states and 2327 transitions. [2018-07-25 08:36:29,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:36:29,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:36:29,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:29,360 INFO L225 Difference]: With dead ends: 1011 [2018-07-25 08:36:29,360 INFO L226 Difference]: Without dead ends: 1003 [2018-07-25 08:36:29,362 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:36:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2018-07-25 08:36:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 391. [2018-07-25 08:36:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-07-25 08:36:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 944 transitions. [2018-07-25 08:36:29,644 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 944 transitions. Word has length 12 [2018-07-25 08:36:29,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:29,644 INFO L472 AbstractCegarLoop]: Abstraction has 391 states and 944 transitions. [2018-07-25 08:36:29,644 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:29,645 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 944 transitions. [2018-07-25 08:36:29,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:29,646 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:29,646 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:29,647 INFO L415 AbstractCegarLoop]: === Iteration 14 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:29,647 INFO L82 PathProgramCache]: Analyzing trace with hash -500853260, now seen corresponding path program 1 times [2018-07-25 08:36:29,647 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:29,667 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 08:36:29,667 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:29,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:29,668 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:29,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:29,668 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:29,668 INFO L87 Difference]: Start difference. First operand 391 states and 944 transitions. Second operand 9 states. [2018-07-25 08:36:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:30,855 INFO L93 Difference]: Finished difference Result 859 states and 1980 transitions. [2018-07-25 08:36:30,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-25 08:36:30,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-07-25 08:36:30,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:30,861 INFO L225 Difference]: With dead ends: 859 [2018-07-25 08:36:30,862 INFO L226 Difference]: Without dead ends: 851 [2018-07-25 08:36:30,863 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:36:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2018-07-25 08:36:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 381. [2018-07-25 08:36:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-07-25 08:36:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 915 transitions. [2018-07-25 08:36:31,176 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 915 transitions. Word has length 12 [2018-07-25 08:36:31,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:31,177 INFO L472 AbstractCegarLoop]: Abstraction has 381 states and 915 transitions. [2018-07-25 08:36:31,177 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:31,177 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 915 transitions. [2018-07-25 08:36:31,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:31,178 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:31,178 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:31,178 INFO L415 AbstractCegarLoop]: === Iteration 15 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:31,179 INFO L82 PathProgramCache]: Analyzing trace with hash 195419672, now seen corresponding path program 1 times [2018-07-25 08:36:31,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:31,202 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 08:36:31,202 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:31,203 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:31,203 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:31,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:31,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:31,204 INFO L87 Difference]: Start difference. First operand 381 states and 915 transitions. Second operand 8 states. [2018-07-25 08:36:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:32,358 INFO L93 Difference]: Finished difference Result 962 states and 2175 transitions. [2018-07-25 08:36:32,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:36:32,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:36:32,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:32,365 INFO L225 Difference]: With dead ends: 962 [2018-07-25 08:36:32,365 INFO L226 Difference]: Without dead ends: 954 [2018-07-25 08:36:32,366 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:36:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-07-25 08:36:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 504. [2018-07-25 08:36:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2018-07-25 08:36:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1236 transitions. [2018-07-25 08:36:32,840 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1236 transitions. Word has length 12 [2018-07-25 08:36:32,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:32,841 INFO L472 AbstractCegarLoop]: Abstraction has 504 states and 1236 transitions. [2018-07-25 08:36:32,841 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1236 transitions. [2018-07-25 08:36:32,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:32,842 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:32,842 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:32,842 INFO L415 AbstractCegarLoop]: === Iteration 16 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:32,842 INFO L82 PathProgramCache]: Analyzing trace with hash 192721184, now seen corresponding path program 1 times [2018-07-25 08:36:32,843 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:32,857 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 08:36:32,857 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:32,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:32,858 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:32,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:32,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:32,858 INFO L87 Difference]: Start difference. First operand 504 states and 1236 transitions. Second operand 8 states. [2018-07-25 08:36:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:34,279 INFO L93 Difference]: Finished difference Result 1064 states and 2409 transitions. [2018-07-25 08:36:34,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:36:34,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:36:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:34,286 INFO L225 Difference]: With dead ends: 1064 [2018-07-25 08:36:34,286 INFO L226 Difference]: Without dead ends: 1056 [2018-07-25 08:36:34,287 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:36:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2018-07-25 08:36:34,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 522. [2018-07-25 08:36:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-07-25 08:36:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1279 transitions. [2018-07-25 08:36:34,758 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1279 transitions. Word has length 12 [2018-07-25 08:36:34,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:34,759 INFO L472 AbstractCegarLoop]: Abstraction has 522 states and 1279 transitions. [2018-07-25 08:36:34,759 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1279 transitions. [2018-07-25 08:36:34,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:34,760 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:34,760 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:34,761 INFO L415 AbstractCegarLoop]: === Iteration 17 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:34,761 INFO L82 PathProgramCache]: Analyzing trace with hash 192721463, now seen corresponding path program 1 times [2018-07-25 08:36:34,761 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:34,774 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 08:36:34,774 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:34,774 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:34,774 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:34,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:34,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:34,775 INFO L87 Difference]: Start difference. First operand 522 states and 1279 transitions. Second operand 8 states. [2018-07-25 08:36:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:36,615 INFO L93 Difference]: Finished difference Result 1241 states and 2843 transitions. [2018-07-25 08:36:36,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-25 08:36:36,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:36:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:36,623 INFO L225 Difference]: With dead ends: 1241 [2018-07-25 08:36:36,623 INFO L226 Difference]: Without dead ends: 1233 [2018-07-25 08:36:36,625 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2018-07-25 08:36:36,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2018-07-25 08:36:37,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 570. [2018-07-25 08:36:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2018-07-25 08:36:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1411 transitions. [2018-07-25 08:36:37,053 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1411 transitions. Word has length 12 [2018-07-25 08:36:37,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:37,053 INFO L472 AbstractCegarLoop]: Abstraction has 570 states and 1411 transitions. [2018-07-25 08:36:37,054 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1411 transitions. [2018-07-25 08:36:37,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:37,055 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:37,055 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:37,055 INFO L415 AbstractCegarLoop]: === Iteration 18 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:37,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1424310915, now seen corresponding path program 1 times [2018-07-25 08:36:37,056 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:37,065 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 08:36:37,066 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:37,066 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:37,067 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:37,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:37,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:37,067 INFO L87 Difference]: Start difference. First operand 570 states and 1411 transitions. Second operand 8 states. [2018-07-25 08:36:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:38,398 INFO L93 Difference]: Finished difference Result 1139 states and 2639 transitions. [2018-07-25 08:36:38,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:36:38,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:36:38,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:38,404 INFO L225 Difference]: With dead ends: 1139 [2018-07-25 08:36:38,405 INFO L226 Difference]: Without dead ends: 1131 [2018-07-25 08:36:38,406 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:36:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2018-07-25 08:36:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 588. [2018-07-25 08:36:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2018-07-25 08:36:38,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1454 transitions. [2018-07-25 08:36:38,825 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1454 transitions. Word has length 12 [2018-07-25 08:36:38,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:38,826 INFO L472 AbstractCegarLoop]: Abstraction has 588 states and 1454 transitions. [2018-07-25 08:36:38,826 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1454 transitions. [2018-07-25 08:36:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:38,827 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:38,827 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:38,827 INFO L415 AbstractCegarLoop]: === Iteration 19 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:38,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1424311194, now seen corresponding path program 1 times [2018-07-25 08:36:38,828 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:38,835 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 08:36:38,835 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:38,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:38,836 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:38,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:38,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:38,837 INFO L87 Difference]: Start difference. First operand 588 states and 1454 transitions. Second operand 8 states. [2018-07-25 08:36:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:40,450 INFO L93 Difference]: Finished difference Result 1325 states and 3082 transitions. [2018-07-25 08:36:40,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:36:40,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:36:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:40,459 INFO L225 Difference]: With dead ends: 1325 [2018-07-25 08:36:40,459 INFO L226 Difference]: Without dead ends: 1317 [2018-07-25 08:36:40,460 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:36:40,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2018-07-25 08:36:41,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 573. [2018-07-25 08:36:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2018-07-25 08:36:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1417 transitions. [2018-07-25 08:36:41,025 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1417 transitions. Word has length 12 [2018-07-25 08:36:41,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:41,025 INFO L472 AbstractCegarLoop]: Abstraction has 573 states and 1417 transitions. [2018-07-25 08:36:41,026 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:41,026 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1417 transitions. [2018-07-25 08:36:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:41,027 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:41,027 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:41,027 INFO L415 AbstractCegarLoop]: === Iteration 20 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:41,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1428190751, now seen corresponding path program 1 times [2018-07-25 08:36:41,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:41,035 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 08:36:41,035 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:41,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:41,036 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:41,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:41,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:41,036 INFO L87 Difference]: Start difference. First operand 573 states and 1417 transitions. Second operand 8 states. [2018-07-25 08:36:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:42,459 INFO L93 Difference]: Finished difference Result 1334 states and 3099 transitions. [2018-07-25 08:36:42,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:36:42,459 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:36:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:42,465 INFO L225 Difference]: With dead ends: 1334 [2018-07-25 08:36:42,465 INFO L226 Difference]: Without dead ends: 1326 [2018-07-25 08:36:42,466 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:36:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2018-07-25 08:36:42,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 579. [2018-07-25 08:36:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2018-07-25 08:36:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1431 transitions. [2018-07-25 08:36:42,886 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1431 transitions. Word has length 12 [2018-07-25 08:36:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:42,886 INFO L472 AbstractCegarLoop]: Abstraction has 579 states and 1431 transitions. [2018-07-25 08:36:42,887 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1431 transitions. [2018-07-25 08:36:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:42,888 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:42,888 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:42,888 INFO L415 AbstractCegarLoop]: === Iteration 21 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:42,889 INFO L82 PathProgramCache]: Analyzing trace with hash 725999160, now seen corresponding path program 1 times [2018-07-25 08:36:42,889 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:42,896 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 08:36:42,896 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:42,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:42,897 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:42,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:42,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:42,897 INFO L87 Difference]: Start difference. First operand 579 states and 1431 transitions. Second operand 8 states. [2018-07-25 08:36:43,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:43,748 INFO L93 Difference]: Finished difference Result 919 states and 2156 transitions. [2018-07-25 08:36:43,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:36:43,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:36:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:43,754 INFO L225 Difference]: With dead ends: 919 [2018-07-25 08:36:43,754 INFO L226 Difference]: Without dead ends: 911 [2018-07-25 08:36:43,755 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:36:43,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2018-07-25 08:36:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 570. [2018-07-25 08:36:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2018-07-25 08:36:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1404 transitions. [2018-07-25 08:36:44,223 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1404 transitions. Word has length 12 [2018-07-25 08:36:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:44,223 INFO L472 AbstractCegarLoop]: Abstraction has 570 states and 1404 transitions. [2018-07-25 08:36:44,224 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1404 transitions. [2018-07-25 08:36:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:44,224 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:44,225 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:44,225 INFO L415 AbstractCegarLoop]: === Iteration 22 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:44,225 INFO L82 PathProgramCache]: Analyzing trace with hash 725999439, now seen corresponding path program 1 times [2018-07-25 08:36:44,225 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:44,232 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 08:36:44,233 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:44,233 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:44,233 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:44,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:44,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:44,234 INFO L87 Difference]: Start difference. First operand 570 states and 1404 transitions. Second operand 8 states. [2018-07-25 08:36:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:45,320 INFO L93 Difference]: Finished difference Result 1095 states and 2579 transitions. [2018-07-25 08:36:45,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:36:45,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:36:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:45,325 INFO L225 Difference]: With dead ends: 1095 [2018-07-25 08:36:45,325 INFO L226 Difference]: Without dead ends: 1087 [2018-07-25 08:36:45,326 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:36:45,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2018-07-25 08:36:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 555. [2018-07-25 08:36:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2018-07-25 08:36:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1367 transitions. [2018-07-25 08:36:45,721 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1367 transitions. Word has length 12 [2018-07-25 08:36:45,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:45,721 INFO L472 AbstractCegarLoop]: Abstraction has 555 states and 1367 transitions. [2018-07-25 08:36:45,721 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:45,721 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1367 transitions. [2018-07-25 08:36:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:45,722 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:45,722 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:45,723 INFO L415 AbstractCegarLoop]: === Iteration 23 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:45,723 INFO L82 PathProgramCache]: Analyzing trace with hash 729878996, now seen corresponding path program 1 times [2018-07-25 08:36:45,723 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:45,734 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 08:36:45,735 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:45,735 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:45,735 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:45,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:45,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:45,737 INFO L87 Difference]: Start difference. First operand 555 states and 1367 transitions. Second operand 8 states. [2018-07-25 08:36:47,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:47,326 INFO L93 Difference]: Finished difference Result 1304 states and 3052 transitions. [2018-07-25 08:36:47,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:36:47,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:36:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:47,330 INFO L225 Difference]: With dead ends: 1304 [2018-07-25 08:36:47,330 INFO L226 Difference]: Without dead ends: 1296 [2018-07-25 08:36:47,331 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2018-07-25 08:36:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2018-07-25 08:36:47,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 552. [2018-07-25 08:36:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2018-07-25 08:36:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1361 transitions. [2018-07-25 08:36:47,778 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1361 transitions. Word has length 12 [2018-07-25 08:36:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:47,778 INFO L472 AbstractCegarLoop]: Abstraction has 552 states and 1361 transitions. [2018-07-25 08:36:47,778 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1361 transitions. [2018-07-25 08:36:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 08:36:47,779 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:47,780 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:47,780 INFO L415 AbstractCegarLoop]: === Iteration 24 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:47,780 INFO L82 PathProgramCache]: Analyzing trace with hash 819460533, now seen corresponding path program 1 times [2018-07-25 08:36:47,780 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:47,789 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 08:36:47,790 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:47,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:47,790 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:47,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:47,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:47,791 INFO L87 Difference]: Start difference. First operand 552 states and 1361 transitions. Second operand 8 states. [2018-07-25 08:36:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:49,165 INFO L93 Difference]: Finished difference Result 1192 states and 2790 transitions. [2018-07-25 08:36:49,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:36:49,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 08:36:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:49,168 INFO L225 Difference]: With dead ends: 1192 [2018-07-25 08:36:49,169 INFO L226 Difference]: Without dead ends: 1184 [2018-07-25 08:36:49,170 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:36:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2018-07-25 08:36:49,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 602. [2018-07-25 08:36:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2018-07-25 08:36:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1488 transitions. [2018-07-25 08:36:49,698 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1488 transitions. Word has length 12 [2018-07-25 08:36:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:49,699 INFO L472 AbstractCegarLoop]: Abstraction has 602 states and 1488 transitions. [2018-07-25 08:36:49,699 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1488 transitions. [2018-07-25 08:36:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:36:49,700 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:49,700 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:49,700 INFO L415 AbstractCegarLoop]: === Iteration 25 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:49,701 INFO L82 PathProgramCache]: Analyzing trace with hash 308305537, now seen corresponding path program 1 times [2018-07-25 08:36:49,701 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:49,706 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:49,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:36:49,706 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:36:49,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:36:49,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:36:49,707 INFO L87 Difference]: Start difference. First operand 602 states and 1488 transitions. Second operand 5 states. [2018-07-25 08:36:50,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:50,290 INFO L93 Difference]: Finished difference Result 1139 states and 2816 transitions. [2018-07-25 08:36:50,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:36:50,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-07-25 08:36:50,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:50,292 INFO L225 Difference]: With dead ends: 1139 [2018-07-25 08:36:50,292 INFO L226 Difference]: Without dead ends: 625 [2018-07-25 08:36:50,294 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2018-07-25 08:36:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 602. [2018-07-25 08:36:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2018-07-25 08:36:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1415 transitions. [2018-07-25 08:36:50,893 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1415 transitions. Word has length 13 [2018-07-25 08:36:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:50,893 INFO L472 AbstractCegarLoop]: Abstraction has 602 states and 1415 transitions. [2018-07-25 08:36:50,893 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:36:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1415 transitions. [2018-07-25 08:36:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:36:50,894 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:50,894 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:50,894 INFO L415 AbstractCegarLoop]: === Iteration 26 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:50,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1757679849, now seen corresponding path program 1 times [2018-07-25 08:36:50,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:50,914 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:36:50,914 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:36:50,914 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:36:50,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:36:50,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:36:50,915 INFO L87 Difference]: Start difference. First operand 602 states and 1415 transitions. Second operand 9 states. [2018-07-25 08:36:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:52,112 INFO L93 Difference]: Finished difference Result 794 states and 1860 transitions. [2018-07-25 08:36:52,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-25 08:36:52,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2018-07-25 08:36:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:52,114 INFO L225 Difference]: With dead ends: 794 [2018-07-25 08:36:52,114 INFO L226 Difference]: Without dead ends: 789 [2018-07-25 08:36:52,115 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-07-25 08:36:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2018-07-25 08:36:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 664. [2018-07-25 08:36:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2018-07-25 08:36:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1563 transitions. [2018-07-25 08:36:52,773 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1563 transitions. Word has length 13 [2018-07-25 08:36:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:52,773 INFO L472 AbstractCegarLoop]: Abstraction has 664 states and 1563 transitions. [2018-07-25 08:36:52,773 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:36:52,773 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1563 transitions. [2018-07-25 08:36:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-25 08:36:52,774 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:52,774 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:52,775 INFO L415 AbstractCegarLoop]: === Iteration 27 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:52,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1161218619, now seen corresponding path program 1 times [2018-07-25 08:36:52,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:36:52,781 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:52,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:36:52,781 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:36:52,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:36:52,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:36:52,782 INFO L87 Difference]: Start difference. First operand 664 states and 1563 transitions. Second operand 5 states. [2018-07-25 08:36:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:53,693 INFO L93 Difference]: Finished difference Result 1317 states and 3113 transitions. [2018-07-25 08:36:53,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:36:53,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-07-25 08:36:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:53,696 INFO L225 Difference]: With dead ends: 1317 [2018-07-25 08:36:53,696 INFO L226 Difference]: Without dead ends: 729 [2018-07-25 08:36:53,698 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:36:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2018-07-25 08:36:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 690. [2018-07-25 08:36:54,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2018-07-25 08:36:54,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1556 transitions. [2018-07-25 08:36:54,711 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1556 transitions. Word has length 13 [2018-07-25 08:36:54,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:54,712 INFO L472 AbstractCegarLoop]: Abstraction has 690 states and 1556 transitions. [2018-07-25 08:36:54,712 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:36:54,712 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1556 transitions. [2018-07-25 08:36:54,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:36:54,713 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:54,713 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:54,714 INFO L415 AbstractCegarLoop]: === Iteration 28 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:54,714 INFO L82 PathProgramCache]: Analyzing trace with hash -942981820, now seen corresponding path program 1 times [2018-07-25 08:36:54,714 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:54,723 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 08:36:54,724 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:54,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:54,724 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:54,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:54,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:54,725 INFO L87 Difference]: Start difference. First operand 690 states and 1556 transitions. Second operand 8 states. [2018-07-25 08:36:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:56,834 INFO L93 Difference]: Finished difference Result 1435 states and 3122 transitions. [2018-07-25 08:36:56,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:36:56,835 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:36:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:56,838 INFO L225 Difference]: With dead ends: 1435 [2018-07-25 08:36:56,838 INFO L226 Difference]: Without dead ends: 1427 [2018-07-25 08:36:56,839 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:36:56,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2018-07-25 08:36:57,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 789. [2018-07-25 08:36:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2018-07-25 08:36:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1779 transitions. [2018-07-25 08:36:57,700 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1779 transitions. Word has length 16 [2018-07-25 08:36:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:36:57,700 INFO L472 AbstractCegarLoop]: Abstraction has 789 states and 1779 transitions. [2018-07-25 08:36:57,700 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:36:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1779 transitions. [2018-07-25 08:36:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:36:57,701 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:36:57,701 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:36:57,701 INFO L415 AbstractCegarLoop]: === Iteration 29 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:36:57,702 INFO L82 PathProgramCache]: Analyzing trace with hash -945782174, now seen corresponding path program 1 times [2018-07-25 08:36:57,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:36:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:36:57,711 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 08:36:57,711 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:36:57,711 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:36:57,711 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:36:57,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:36:57,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:36:57,712 INFO L87 Difference]: Start difference. First operand 789 states and 1779 transitions. Second operand 8 states. [2018-07-25 08:36:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:36:59,423 INFO L93 Difference]: Finished difference Result 1599 states and 3473 transitions. [2018-07-25 08:36:59,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:36:59,423 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:36:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:36:59,426 INFO L225 Difference]: With dead ends: 1599 [2018-07-25 08:36:59,427 INFO L226 Difference]: Without dead ends: 1591 [2018-07-25 08:36:59,427 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:36:59,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2018-07-25 08:37:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 821. [2018-07-25 08:37:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2018-07-25 08:37:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1853 transitions. [2018-07-25 08:37:00,319 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1853 transitions. Word has length 16 [2018-07-25 08:37:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:00,319 INFO L472 AbstractCegarLoop]: Abstraction has 821 states and 1853 transitions. [2018-07-25 08:37:00,320 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1853 transitions. [2018-07-25 08:37:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:00,320 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:00,320 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:00,321 INFO L415 AbstractCegarLoop]: === Iteration 30 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:00,321 INFO L82 PathProgramCache]: Analyzing trace with hash -945680029, now seen corresponding path program 1 times [2018-07-25 08:37:00,321 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:00,328 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 08:37:00,329 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:37:00,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:37:00,329 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:00,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:00,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:00,330 INFO L87 Difference]: Start difference. First operand 821 states and 1853 transitions. Second operand 8 states. [2018-07-25 08:37:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:01,840 INFO L93 Difference]: Finished difference Result 1411 states and 3060 transitions. [2018-07-25 08:37:01,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:37:01,840 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:37:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:01,844 INFO L225 Difference]: With dead ends: 1411 [2018-07-25 08:37:01,844 INFO L226 Difference]: Without dead ends: 1403 [2018-07-25 08:37:01,845 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:37:01,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2018-07-25 08:37:02,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 823. [2018-07-25 08:37:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2018-07-25 08:37:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1851 transitions. [2018-07-25 08:37:02,717 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1851 transitions. Word has length 16 [2018-07-25 08:37:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:02,717 INFO L472 AbstractCegarLoop]: Abstraction has 823 states and 1851 transitions. [2018-07-25 08:37:02,717 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:02,717 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1851 transitions. [2018-07-25 08:37:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:02,718 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:02,718 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:02,719 INFO L415 AbstractCegarLoop]: === Iteration 31 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:02,719 INFO L82 PathProgramCache]: Analyzing trace with hash -648408412, now seen corresponding path program 1 times [2018-07-25 08:37:02,719 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:02,726 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 08:37:02,726 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:37:02,726 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:37:02,726 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:02,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:02,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:02,727 INFO L87 Difference]: Start difference. First operand 823 states and 1851 transitions. Second operand 8 states. [2018-07-25 08:37:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:04,387 INFO L93 Difference]: Finished difference Result 1490 states and 3255 transitions. [2018-07-25 08:37:04,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:37:04,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:37:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:04,390 INFO L225 Difference]: With dead ends: 1490 [2018-07-25 08:37:04,390 INFO L226 Difference]: Without dead ends: 1482 [2018-07-25 08:37:04,391 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2018-07-25 08:37:04,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2018-07-25 08:37:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 943. [2018-07-25 08:37:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2018-07-25 08:37:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 2141 transitions. [2018-07-25 08:37:05,264 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 2141 transitions. Word has length 16 [2018-07-25 08:37:05,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:05,264 INFO L472 AbstractCegarLoop]: Abstraction has 943 states and 2141 transitions. [2018-07-25 08:37:05,264 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:05,264 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 2141 transitions. [2018-07-25 08:37:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:05,265 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:05,265 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:05,266 INFO L415 AbstractCegarLoop]: === Iteration 32 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:05,266 INFO L82 PathProgramCache]: Analyzing trace with hash -648306267, now seen corresponding path program 1 times [2018-07-25 08:37:05,266 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:05,274 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 08:37:05,274 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:37:05,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:37:05,274 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:05,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:05,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:05,275 INFO L87 Difference]: Start difference. First operand 943 states and 2141 transitions. Second operand 8 states. [2018-07-25 08:37:06,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:06,953 INFO L93 Difference]: Finished difference Result 1427 states and 3102 transitions. [2018-07-25 08:37:06,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-25 08:37:06,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:37:06,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:06,955 INFO L225 Difference]: With dead ends: 1427 [2018-07-25 08:37:06,955 INFO L226 Difference]: Without dead ends: 1419 [2018-07-25 08:37:06,956 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:37:06,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2018-07-25 08:37:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 927. [2018-07-25 08:37:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2018-07-25 08:37:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 2109 transitions. [2018-07-25 08:37:07,882 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 2109 transitions. Word has length 16 [2018-07-25 08:37:07,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:07,882 INFO L472 AbstractCegarLoop]: Abstraction has 927 states and 2109 transitions. [2018-07-25 08:37:07,882 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 2109 transitions. [2018-07-25 08:37:07,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:07,883 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:07,883 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:07,883 INFO L415 AbstractCegarLoop]: === Iteration 33 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:07,883 INFO L82 PathProgramCache]: Analyzing trace with hash -639392031, now seen corresponding path program 1 times [2018-07-25 08:37:07,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:07,889 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 08:37:07,889 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:37:07,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-25 08:37:07,889 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:07,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:07,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:07,890 INFO L87 Difference]: Start difference. First operand 927 states and 2109 transitions. Second operand 8 states. [2018-07-25 08:37:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:09,312 INFO L93 Difference]: Finished difference Result 1306 states and 2848 transitions. [2018-07-25 08:37:09,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:37:09,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:37:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:09,314 INFO L225 Difference]: With dead ends: 1306 [2018-07-25 08:37:09,314 INFO L226 Difference]: Without dead ends: 1298 [2018-07-25 08:37:09,315 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2018-07-25 08:37:09,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2018-07-25 08:37:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 986. [2018-07-25 08:37:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2018-07-25 08:37:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 2232 transitions. [2018-07-25 08:37:10,326 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 2232 transitions. Word has length 16 [2018-07-25 08:37:10,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:10,326 INFO L472 AbstractCegarLoop]: Abstraction has 986 states and 2232 transitions. [2018-07-25 08:37:10,326 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:10,326 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 2232 transitions. [2018-07-25 08:37:10,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:10,327 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:10,327 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:10,327 INFO L415 AbstractCegarLoop]: === Iteration 34 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:10,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1639330009, now seen corresponding path program 1 times [2018-07-25 08:37:10,328 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 08:37:10,334 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:10,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:10,335 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:10,335 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:10,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:10,335 INFO L87 Difference]: Start difference. First operand 986 states and 2232 transitions. Second operand 8 states. [2018-07-25 08:37:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:11,761 INFO L93 Difference]: Finished difference Result 1285 states and 2841 transitions. [2018-07-25 08:37:11,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:37:11,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:37:11,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:11,763 INFO L225 Difference]: With dead ends: 1285 [2018-07-25 08:37:11,763 INFO L226 Difference]: Without dead ends: 1277 [2018-07-25 08:37:11,764 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:37:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2018-07-25 08:37:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 986. [2018-07-25 08:37:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2018-07-25 08:37:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 2231 transitions. [2018-07-25 08:37:12,744 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 2231 transitions. Word has length 16 [2018-07-25 08:37:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:12,745 INFO L472 AbstractCegarLoop]: Abstraction has 986 states and 2231 transitions. [2018-07-25 08:37:12,745 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 2231 transitions. [2018-07-25 08:37:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:12,745 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:12,745 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:12,746 INFO L415 AbstractCegarLoop]: === Iteration 35 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:12,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1609777337, now seen corresponding path program 1 times [2018-07-25 08:37:12,746 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 08:37:12,752 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:12,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:12,753 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:12,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:12,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:12,753 INFO L87 Difference]: Start difference. First operand 986 states and 2231 transitions. Second operand 8 states. [2018-07-25 08:37:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:14,527 INFO L93 Difference]: Finished difference Result 1518 states and 3315 transitions. [2018-07-25 08:37:14,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-25 08:37:14,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:37:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:14,529 INFO L225 Difference]: With dead ends: 1518 [2018-07-25 08:37:14,529 INFO L226 Difference]: Without dead ends: 1510 [2018-07-25 08:37:14,529 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:37:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2018-07-25 08:37:15,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 977. [2018-07-25 08:37:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2018-07-25 08:37:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2210 transitions. [2018-07-25 08:37:15,580 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2210 transitions. Word has length 16 [2018-07-25 08:37:15,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:15,580 INFO L472 AbstractCegarLoop]: Abstraction has 977 states and 2210 transitions. [2018-07-25 08:37:15,580 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2210 transitions. [2018-07-25 08:37:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:15,581 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:15,581 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:15,582 INFO L415 AbstractCegarLoop]: === Iteration 36 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:15,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1612577691, now seen corresponding path program 1 times [2018-07-25 08:37:15,582 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 08:37:15,589 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:15,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:15,589 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:15,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:15,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:15,590 INFO L87 Difference]: Start difference. First operand 977 states and 2210 transitions. Second operand 8 states. [2018-07-25 08:37:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:17,346 INFO L93 Difference]: Finished difference Result 1448 states and 3170 transitions. [2018-07-25 08:37:17,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:37:17,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:37:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:17,348 INFO L225 Difference]: With dead ends: 1448 [2018-07-25 08:37:17,348 INFO L226 Difference]: Without dead ends: 1440 [2018-07-25 08:37:17,349 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2018-07-25 08:37:17,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2018-07-25 08:37:18,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 941. [2018-07-25 08:37:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2018-07-25 08:37:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2120 transitions. [2018-07-25 08:37:18,325 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2120 transitions. Word has length 16 [2018-07-25 08:37:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:18,326 INFO L472 AbstractCegarLoop]: Abstraction has 941 states and 2120 transitions. [2018-07-25 08:37:18,326 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2120 transitions. [2018-07-25 08:37:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:18,326 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:18,326 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:18,327 INFO L415 AbstractCegarLoop]: === Iteration 37 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:18,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1612475546, now seen corresponding path program 1 times [2018-07-25 08:37:18,327 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 08:37:18,333 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:18,333 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:37:18,333 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:18,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:18,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:18,334 INFO L87 Difference]: Start difference. First operand 941 states and 2120 transitions. Second operand 8 states. [2018-07-25 08:37:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:19,777 INFO L93 Difference]: Finished difference Result 1254 states and 2743 transitions. [2018-07-25 08:37:19,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:37:19,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-07-25 08:37:19,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:19,779 INFO L225 Difference]: With dead ends: 1254 [2018-07-25 08:37:19,779 INFO L226 Difference]: Without dead ends: 1246 [2018-07-25 08:37:19,780 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-07-25 08:37:19,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2018-07-25 08:37:20,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 896. [2018-07-25 08:37:20,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2018-07-25 08:37:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2017 transitions. [2018-07-25 08:37:20,727 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2017 transitions. Word has length 16 [2018-07-25 08:37:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:20,727 INFO L472 AbstractCegarLoop]: Abstraction has 896 states and 2017 transitions. [2018-07-25 08:37:20,727 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:20,727 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2017 transitions. [2018-07-25 08:37:20,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:20,728 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:20,728 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:20,729 INFO L415 AbstractCegarLoop]: === Iteration 38 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:20,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1200558936, now seen corresponding path program 1 times [2018-07-25 08:37:20,729 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:20,736 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 08:37:20,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:20,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:20,737 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:20,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:20,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:20,738 INFO L87 Difference]: Start difference. First operand 896 states and 2017 transitions. Second operand 9 states. [2018-07-25 08:37:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:22,189 INFO L93 Difference]: Finished difference Result 1152 states and 2509 transitions. [2018-07-25 08:37:22,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-25 08:37:22,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:37:22,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:22,191 INFO L225 Difference]: With dead ends: 1152 [2018-07-25 08:37:22,191 INFO L226 Difference]: Without dead ends: 1144 [2018-07-25 08:37:22,191 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:37:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2018-07-25 08:37:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 970. [2018-07-25 08:37:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2018-07-25 08:37:23,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 2200 transitions. [2018-07-25 08:37:23,262 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 2200 transitions. Word has length 16 [2018-07-25 08:37:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:23,262 INFO L472 AbstractCegarLoop]: Abstraction has 970 states and 2200 transitions. [2018-07-25 08:37:23,262 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 2200 transitions. [2018-07-25 08:37:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:23,263 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:23,263 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:23,263 INFO L415 AbstractCegarLoop]: === Iteration 39 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:23,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1203257424, now seen corresponding path program 1 times [2018-07-25 08:37:23,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:23,272 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 08:37:23,275 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:23,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:23,275 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:23,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:23,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:23,276 INFO L87 Difference]: Start difference. First operand 970 states and 2200 transitions. Second operand 9 states. [2018-07-25 08:37:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:24,606 INFO L93 Difference]: Finished difference Result 1180 states and 2573 transitions. [2018-07-25 08:37:24,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-25 08:37:24,606 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:37:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:24,608 INFO L225 Difference]: With dead ends: 1180 [2018-07-25 08:37:24,608 INFO L226 Difference]: Without dead ends: 1172 [2018-07-25 08:37:24,609 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:37:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2018-07-25 08:37:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 948. [2018-07-25 08:37:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2018-07-25 08:37:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 2144 transitions. [2018-07-25 08:37:25,599 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 2144 transitions. Word has length 16 [2018-07-25 08:37:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:25,600 INFO L472 AbstractCegarLoop]: Abstraction has 948 states and 2144 transitions. [2018-07-25 08:37:25,600 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 2144 transitions. [2018-07-25 08:37:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:25,600 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:25,601 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:25,601 INFO L415 AbstractCegarLoop]: === Iteration 40 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:25,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1203257145, now seen corresponding path program 1 times [2018-07-25 08:37:25,601 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:25,610 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 08:37:25,610 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:25,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:25,610 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:25,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:25,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:25,615 INFO L87 Difference]: Start difference. First operand 948 states and 2144 transitions. Second operand 9 states. [2018-07-25 08:37:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:27,074 INFO L93 Difference]: Finished difference Result 1233 states and 2705 transitions. [2018-07-25 08:37:27,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:37:27,075 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:37:27,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:27,076 INFO L225 Difference]: With dead ends: 1233 [2018-07-25 08:37:27,076 INFO L226 Difference]: Without dead ends: 1225 [2018-07-25 08:37:27,077 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2018-07-25 08:37:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2018-07-25 08:37:28,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 966. [2018-07-25 08:37:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2018-07-25 08:37:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 2192 transitions. [2018-07-25 08:37:28,138 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 2192 transitions. Word has length 16 [2018-07-25 08:37:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:28,138 INFO L472 AbstractCegarLoop]: Abstraction has 966 states and 2192 transitions. [2018-07-25 08:37:28,138 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 2192 transitions. [2018-07-25 08:37:28,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:28,139 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:28,139 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:28,140 INFO L415 AbstractCegarLoop]: === Iteration 41 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:28,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2004746308, now seen corresponding path program 1 times [2018-07-25 08:37:28,140 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:28,146 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 08:37:28,146 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:37:28,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 08:37:28,147 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:28,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:28,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:28,147 INFO L87 Difference]: Start difference. First operand 966 states and 2192 transitions. Second operand 9 states. [2018-07-25 08:37:29,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:29,895 INFO L93 Difference]: Finished difference Result 1465 states and 3226 transitions. [2018-07-25 08:37:29,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:37:29,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:37:29,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:29,897 INFO L225 Difference]: With dead ends: 1465 [2018-07-25 08:37:29,897 INFO L226 Difference]: Without dead ends: 1457 [2018-07-25 08:37:29,898 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:37:29,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2018-07-25 08:37:30,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1013. [2018-07-25 08:37:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2018-07-25 08:37:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2297 transitions. [2018-07-25 08:37:30,989 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2297 transitions. Word has length 16 [2018-07-25 08:37:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:30,989 INFO L472 AbstractCegarLoop]: Abstraction has 1013 states and 2297 transitions. [2018-07-25 08:37:30,989 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2297 transitions. [2018-07-25 08:37:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:30,990 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:30,990 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:30,991 INFO L415 AbstractCegarLoop]: === Iteration 42 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:30,991 INFO L82 PathProgramCache]: Analyzing trace with hash -35185992, now seen corresponding path program 1 times [2018-07-25 08:37:30,991 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:31,002 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 08:37:31,002 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:37:31,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 08:37:31,003 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:31,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:31,003 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:31,003 INFO L87 Difference]: Start difference. First operand 1013 states and 2297 transitions. Second operand 9 states. [2018-07-25 08:37:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:33,059 INFO L93 Difference]: Finished difference Result 1590 states and 3484 transitions. [2018-07-25 08:37:33,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:37:33,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:37:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:33,061 INFO L225 Difference]: With dead ends: 1590 [2018-07-25 08:37:33,061 INFO L226 Difference]: Without dead ends: 1582 [2018-07-25 08:37:33,062 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2018-07-25 08:37:33,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2018-07-25 08:37:34,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1020. [2018-07-25 08:37:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2018-07-25 08:37:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 2311 transitions. [2018-07-25 08:37:34,295 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 2311 transitions. Word has length 16 [2018-07-25 08:37:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:34,296 INFO L472 AbstractCegarLoop]: Abstraction has 1020 states and 2311 transitions. [2018-07-25 08:37:34,296 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 2311 transitions. [2018-07-25 08:37:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:34,297 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:34,297 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:34,297 INFO L415 AbstractCegarLoop]: === Iteration 43 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:34,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1174622531, now seen corresponding path program 1 times [2018-07-25 08:37:34,297 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:34,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:34,305 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:34,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:34,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:34,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:34,306 INFO L87 Difference]: Start difference. First operand 1020 states and 2311 transitions. Second operand 9 states. [2018-07-25 08:37:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:36,252 INFO L93 Difference]: Finished difference Result 1429 states and 3130 transitions. [2018-07-25 08:37:36,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:37:36,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:37:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:36,254 INFO L225 Difference]: With dead ends: 1429 [2018-07-25 08:37:36,255 INFO L226 Difference]: Without dead ends: 1421 [2018-07-25 08:37:36,255 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:37:36,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2018-07-25 08:37:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1031. [2018-07-25 08:37:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2018-07-25 08:37:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 2337 transitions. [2018-07-25 08:37:37,452 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 2337 transitions. Word has length 16 [2018-07-25 08:37:37,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:37,452 INFO L472 AbstractCegarLoop]: Abstraction has 1031 states and 2337 transitions. [2018-07-25 08:37:37,452 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:37,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 2337 transitions. [2018-07-25 08:37:37,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:37,453 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:37,453 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:37,453 INFO L415 AbstractCegarLoop]: === Iteration 44 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:37,453 INFO L82 PathProgramCache]: Analyzing trace with hash 913888237, now seen corresponding path program 1 times [2018-07-25 08:37:37,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:37,461 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 08:37:37,461 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:37:37,461 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-07-25 08:37:37,462 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:37,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:37,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:37,462 INFO L87 Difference]: Start difference. First operand 1031 states and 2337 transitions. Second operand 9 states. [2018-07-25 08:37:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:39,221 INFO L93 Difference]: Finished difference Result 1420 states and 3128 transitions. [2018-07-25 08:37:39,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-25 08:37:39,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:37:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:39,223 INFO L225 Difference]: With dead ends: 1420 [2018-07-25 08:37:39,223 INFO L226 Difference]: Without dead ends: 1412 [2018-07-25 08:37:39,223 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:37:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2018-07-25 08:37:40,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 963. [2018-07-25 08:37:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2018-07-25 08:37:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 2173 transitions. [2018-07-25 08:37:40,449 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 2173 transitions. Word has length 16 [2018-07-25 08:37:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:40,449 INFO L472 AbstractCegarLoop]: Abstraction has 963 states and 2173 transitions. [2018-07-25 08:37:40,449 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 2173 transitions. [2018-07-25 08:37:40,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:40,450 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:40,450 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:40,450 INFO L415 AbstractCegarLoop]: === Iteration 45 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2123696760, now seen corresponding path program 1 times [2018-07-25 08:37:40,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:40,457 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:40,458 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:40,458 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:40,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:40,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:40,458 INFO L87 Difference]: Start difference. First operand 963 states and 2173 transitions. Second operand 9 states. [2018-07-25 08:37:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:42,354 INFO L93 Difference]: Finished difference Result 1426 states and 3132 transitions. [2018-07-25 08:37:42,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-25 08:37:42,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:37:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:42,356 INFO L225 Difference]: With dead ends: 1426 [2018-07-25 08:37:42,356 INFO L226 Difference]: Without dead ends: 1418 [2018-07-25 08:37:42,357 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:37:42,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2018-07-25 08:37:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 956. [2018-07-25 08:37:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2018-07-25 08:37:43,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2159 transitions. [2018-07-25 08:37:43,446 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2159 transitions. Word has length 16 [2018-07-25 08:37:43,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:43,446 INFO L472 AbstractCegarLoop]: Abstraction has 956 states and 2159 transitions. [2018-07-25 08:37:43,446 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:43,447 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2159 transitions. [2018-07-25 08:37:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-25 08:37:43,447 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:43,447 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:43,448 INFO L415 AbstractCegarLoop]: === Iteration 46 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:43,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1400694311, now seen corresponding path program 1 times [2018-07-25 08:37:43,448 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:37:43,456 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:43,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-07-25 08:37:43,456 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:37:43,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:37:43,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:37:43,457 INFO L87 Difference]: Start difference. First operand 956 states and 2159 transitions. Second operand 9 states. [2018-07-25 08:37:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:44,972 INFO L93 Difference]: Finished difference Result 1172 states and 2569 transitions. [2018-07-25 08:37:44,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:37:44,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-07-25 08:37:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:44,974 INFO L225 Difference]: With dead ends: 1172 [2018-07-25 08:37:44,974 INFO L226 Difference]: Without dead ends: 1164 [2018-07-25 08:37:44,974 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2018-07-25 08:37:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2018-07-25 08:37:46,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 856. [2018-07-25 08:37:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2018-07-25 08:37:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1928 transitions. [2018-07-25 08:37:46,048 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1928 transitions. Word has length 16 [2018-07-25 08:37:46,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:46,048 INFO L472 AbstractCegarLoop]: Abstraction has 856 states and 1928 transitions. [2018-07-25 08:37:46,048 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:37:46,048 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1928 transitions. [2018-07-25 08:37:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:37:46,049 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:46,049 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:46,049 INFO L415 AbstractCegarLoop]: === Iteration 47 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:46,049 INFO L82 PathProgramCache]: Analyzing trace with hash 417107387, now seen corresponding path program 1 times [2018-07-25 08:37:46,050 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:46,056 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 08:37:46,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:46,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 08:37:46,056 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 08:37:46,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 08:37:46,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:37:46,056 INFO L87 Difference]: Start difference. First operand 856 states and 1928 transitions. Second operand 8 states. [2018-07-25 08:37:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:47,693 INFO L93 Difference]: Finished difference Result 1295 states and 2858 transitions. [2018-07-25 08:37:47,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-25 08:37:47,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-07-25 08:37:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:47,694 INFO L225 Difference]: With dead ends: 1295 [2018-07-25 08:37:47,695 INFO L226 Difference]: Without dead ends: 1290 [2018-07-25 08:37:47,695 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2018-07-25 08:37:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2018-07-25 08:37:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1017. [2018-07-25 08:37:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2018-07-25 08:37:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2270 transitions. [2018-07-25 08:37:48,956 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2270 transitions. Word has length 17 [2018-07-25 08:37:48,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:48,956 INFO L472 AbstractCegarLoop]: Abstraction has 1017 states and 2270 transitions. [2018-07-25 08:37:48,956 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 08:37:48,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2270 transitions. [2018-07-25 08:37:48,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-25 08:37:48,957 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:48,957 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:48,957 INFO L415 AbstractCegarLoop]: === Iteration 48 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:48,957 INFO L82 PathProgramCache]: Analyzing trace with hash 524852653, now seen corresponding path program 1 times [2018-07-25 08:37:48,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:48,971 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 08:37:48,971 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:48,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:37:48,971 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:37:48,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:37:48,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:37:48,972 INFO L87 Difference]: Start difference. First operand 1017 states and 2270 transitions. Second operand 11 states. [2018-07-25 08:37:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:51,544 INFO L93 Difference]: Finished difference Result 1730 states and 3766 transitions. [2018-07-25 08:37:51,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-25 08:37:51,544 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-07-25 08:37:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:51,546 INFO L225 Difference]: With dead ends: 1730 [2018-07-25 08:37:51,546 INFO L226 Difference]: Without dead ends: 1722 [2018-07-25 08:37:51,547 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=373, Invalid=959, Unknown=0, NotChecked=0, Total=1332 [2018-07-25 08:37:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2018-07-25 08:37:53,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1463. [2018-07-25 08:37:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2018-07-25 08:37:53,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 3272 transitions. [2018-07-25 08:37:53,335 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 3272 transitions. Word has length 17 [2018-07-25 08:37:53,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:53,335 INFO L472 AbstractCegarLoop]: Abstraction has 1463 states and 3272 transitions. [2018-07-25 08:37:53,335 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:37:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 3272 transitions. [2018-07-25 08:37:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:37:53,337 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:53,337 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:53,337 INFO L415 AbstractCegarLoop]: === Iteration 49 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash -405945350, now seen corresponding path program 1 times [2018-07-25 08:37:53,337 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:53,350 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 08:37:53,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:53,351 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:37:53,351 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:37:53,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:37:53,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:37:53,352 INFO L87 Difference]: Start difference. First operand 1463 states and 3272 transitions. Second operand 12 states. [2018-07-25 08:37:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:37:56,856 INFO L93 Difference]: Finished difference Result 2244 states and 4948 transitions. [2018-07-25 08:37:56,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-07-25 08:37:56,857 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-25 08:37:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:37:56,860 INFO L225 Difference]: With dead ends: 2244 [2018-07-25 08:37:56,860 INFO L226 Difference]: Without dead ends: 2236 [2018-07-25 08:37:56,861 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2018-07-25 08:37:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2018-07-25 08:37:58,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1750. [2018-07-25 08:37:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2018-07-25 08:37:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 3957 transitions. [2018-07-25 08:37:58,827 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 3957 transitions. Word has length 20 [2018-07-25 08:37:58,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:37:58,827 INFO L472 AbstractCegarLoop]: Abstraction has 1750 states and 3957 transitions. [2018-07-25 08:37:58,827 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:37:58,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 3957 transitions. [2018-07-25 08:37:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:37:58,828 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:37:58,828 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:37:58,828 INFO L415 AbstractCegarLoop]: === Iteration 50 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:37:58,829 INFO L82 PathProgramCache]: Analyzing trace with hash -408643838, now seen corresponding path program 1 times [2018-07-25 08:37:58,829 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:37:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:37:58,839 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 08:37:58,839 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:37:58,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:37:58,840 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:37:58,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:37:58,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:37:58,840 INFO L87 Difference]: Start difference. First operand 1750 states and 3957 transitions. Second operand 12 states. [2018-07-25 08:38:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:02,362 INFO L93 Difference]: Finished difference Result 2632 states and 5780 transitions. [2018-07-25 08:38:02,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:38:02,362 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-25 08:38:02,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:02,365 INFO L225 Difference]: With dead ends: 2632 [2018-07-25 08:38:02,365 INFO L226 Difference]: Without dead ends: 2624 [2018-07-25 08:38:02,366 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=314, Invalid=1578, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:38:02,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2018-07-25 08:38:04,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1762. [2018-07-25 08:38:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2018-07-25 08:38:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 3981 transitions. [2018-07-25 08:38:04,406 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 3981 transitions. Word has length 20 [2018-07-25 08:38:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:04,406 INFO L472 AbstractCegarLoop]: Abstraction has 1762 states and 3981 transitions. [2018-07-25 08:38:04,406 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:38:04,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 3981 transitions. [2018-07-25 08:38:04,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:38:04,407 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:04,407 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:38:04,408 INFO L415 AbstractCegarLoop]: === Iteration 51 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:04,408 INFO L82 PathProgramCache]: Analyzing trace with hash -408643559, now seen corresponding path program 1 times [2018-07-25 08:38:04,408 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:04,422 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 08:38:04,422 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:04,422 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:38:04,422 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:38:04,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:38:04,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:38:04,423 INFO L87 Difference]: Start difference. First operand 1762 states and 3981 transitions. Second operand 12 states. [2018-07-25 08:38:08,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:08,215 INFO L93 Difference]: Finished difference Result 2682 states and 5922 transitions. [2018-07-25 08:38:08,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-25 08:38:08,216 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-25 08:38:08,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:08,218 INFO L225 Difference]: With dead ends: 2682 [2018-07-25 08:38:08,218 INFO L226 Difference]: Without dead ends: 2674 [2018-07-25 08:38:08,220 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=374, Invalid=2076, Unknown=0, NotChecked=0, Total=2450 [2018-07-25 08:38:08,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2018-07-25 08:38:10,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1808. [2018-07-25 08:38:10,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2018-07-25 08:38:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 4093 transitions. [2018-07-25 08:38:10,238 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 4093 transitions. Word has length 20 [2018-07-25 08:38:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:10,239 INFO L472 AbstractCegarLoop]: Abstraction has 1808 states and 4093 transitions. [2018-07-25 08:38:10,239 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:38:10,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 4093 transitions. [2018-07-25 08:38:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:38:10,240 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:10,240 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:38:10,240 INFO L415 AbstractCegarLoop]: === Iteration 52 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:10,241 INFO L82 PathProgramCache]: Analyzing trace with hash 822945893, now seen corresponding path program 1 times [2018-07-25 08:38:10,241 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:10,250 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 08:38:10,250 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:10,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:38:10,251 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:38:10,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:38:10,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:38:10,252 INFO L87 Difference]: Start difference. First operand 1808 states and 4093 transitions. Second operand 12 states. [2018-07-25 08:38:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:14,084 INFO L93 Difference]: Finished difference Result 2725 states and 5993 transitions. [2018-07-25 08:38:14,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-25 08:38:14,084 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-25 08:38:14,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:14,087 INFO L225 Difference]: With dead ends: 2725 [2018-07-25 08:38:14,087 INFO L226 Difference]: Without dead ends: 2717 [2018-07-25 08:38:14,087 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=344, Invalid=1548, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:38:14,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2018-07-25 08:38:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 1923. [2018-07-25 08:38:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1923 states. [2018-07-25 08:38:16,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 4343 transitions. [2018-07-25 08:38:16,278 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 4343 transitions. Word has length 20 [2018-07-25 08:38:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:16,278 INFO L472 AbstractCegarLoop]: Abstraction has 1923 states and 4343 transitions. [2018-07-25 08:38:16,279 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:38:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 4343 transitions. [2018-07-25 08:38:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:38:16,279 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:16,280 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:38:16,280 INFO L415 AbstractCegarLoop]: === Iteration 53 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:16,280 INFO L82 PathProgramCache]: Analyzing trace with hash 822946172, now seen corresponding path program 1 times [2018-07-25 08:38:16,280 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:16,290 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 08:38:16,290 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:16,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:38:16,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:38:16,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:38:16,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:38:16,291 INFO L87 Difference]: Start difference. First operand 1923 states and 4343 transitions. Second operand 12 states. [2018-07-25 08:38:20,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:20,647 INFO L93 Difference]: Finished difference Result 2981 states and 6573 transitions. [2018-07-25 08:38:20,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-07-25 08:38:20,647 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-25 08:38:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:20,650 INFO L225 Difference]: With dead ends: 2981 [2018-07-25 08:38:20,651 INFO L226 Difference]: Without dead ends: 2973 [2018-07-25 08:38:20,651 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=491, Invalid=2701, Unknown=0, NotChecked=0, Total=3192 [2018-07-25 08:38:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2018-07-25 08:38:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1885. [2018-07-25 08:38:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2018-07-25 08:38:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 4258 transitions. [2018-07-25 08:38:22,846 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 4258 transitions. Word has length 20 [2018-07-25 08:38:22,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:22,846 INFO L472 AbstractCegarLoop]: Abstraction has 1885 states and 4258 transitions. [2018-07-25 08:38:22,846 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:38:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 4258 transitions. [2018-07-25 08:38:22,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:38:22,847 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:22,847 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:38:22,847 INFO L415 AbstractCegarLoop]: === Iteration 54 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:22,847 INFO L82 PathProgramCache]: Analyzing trace with hash 826825729, now seen corresponding path program 1 times [2018-07-25 08:38:22,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:22,857 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 08:38:22,857 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:22,857 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-07-25 08:38:22,857 INFO L451 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-25 08:38:22,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-25 08:38:22,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-07-25 08:38:22,858 INFO L87 Difference]: Start difference. First operand 1885 states and 4258 transitions. Second operand 12 states. [2018-07-25 08:38:26,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:26,973 INFO L93 Difference]: Finished difference Result 2756 states and 6082 transitions. [2018-07-25 08:38:26,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-07-25 08:38:26,973 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2018-07-25 08:38:26,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:26,977 INFO L225 Difference]: With dead ends: 2756 [2018-07-25 08:38:26,977 INFO L226 Difference]: Without dead ends: 2748 [2018-07-25 08:38:26,978 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=456, Invalid=2406, Unknown=0, NotChecked=0, Total=2862 [2018-07-25 08:38:26,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2018-07-25 08:38:29,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2013. [2018-07-25 08:38:29,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2013 states. [2018-07-25 08:38:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 4552 transitions. [2018-07-25 08:38:29,462 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 4552 transitions. Word has length 20 [2018-07-25 08:38:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:29,463 INFO L472 AbstractCegarLoop]: Abstraction has 2013 states and 4552 transitions. [2018-07-25 08:38:29,463 INFO L473 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-25 08:38:29,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 4552 transitions. [2018-07-25 08:38:29,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:38:29,464 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:29,464 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:38:29,464 INFO L415 AbstractCegarLoop]: === Iteration 55 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:29,464 INFO L82 PathProgramCache]: Analyzing trace with hash 89905005, now seen corresponding path program 1 times [2018-07-25 08:38:29,464 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 08:38:29,475 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:29,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:29,475 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:38:29,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:38:29,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:38:29,476 INFO L87 Difference]: Start difference. First operand 2013 states and 4552 transitions. Second operand 10 states. [2018-07-25 08:38:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:32,744 INFO L93 Difference]: Finished difference Result 2560 states and 5727 transitions. [2018-07-25 08:38:32,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 08:38:32,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-07-25 08:38:32,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:32,748 INFO L225 Difference]: With dead ends: 2560 [2018-07-25 08:38:32,748 INFO L226 Difference]: Without dead ends: 2552 [2018-07-25 08:38:32,749 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:38:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2018-07-25 08:38:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2037. [2018-07-25 08:38:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2037 states. [2018-07-25 08:38:35,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 4589 transitions. [2018-07-25 08:38:35,306 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 4589 transitions. Word has length 20 [2018-07-25 08:38:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:35,306 INFO L472 AbstractCegarLoop]: Abstraction has 2037 states and 4589 transitions. [2018-07-25 08:38:35,306 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:38:35,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 4589 transitions. [2018-07-25 08:38:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:38:35,307 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:35,307 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:38:35,307 INFO L415 AbstractCegarLoop]: === Iteration 56 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash 89905284, now seen corresponding path program 1 times [2018-07-25 08:38:35,308 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:35,317 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 08:38:35,317 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:35,318 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:35,318 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:38:35,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:38:35,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:38:35,318 INFO L87 Difference]: Start difference. First operand 2037 states and 4589 transitions. Second operand 10 states. [2018-07-25 08:38:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:39,063 INFO L93 Difference]: Finished difference Result 2954 states and 6607 transitions. [2018-07-25 08:38:39,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-25 08:38:39,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-07-25 08:38:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:39,067 INFO L225 Difference]: With dead ends: 2954 [2018-07-25 08:38:39,067 INFO L226 Difference]: Without dead ends: 2946 [2018-07-25 08:38:39,068 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=215, Invalid=777, Unknown=0, NotChecked=0, Total=992 [2018-07-25 08:38:39,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2018-07-25 08:38:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2097. [2018-07-25 08:38:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2097 states. [2018-07-25 08:38:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 4733 transitions. [2018-07-25 08:38:41,674 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 4733 transitions. Word has length 20 [2018-07-25 08:38:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:41,675 INFO L472 AbstractCegarLoop]: Abstraction has 2097 states and 4733 transitions. [2018-07-25 08:38:41,675 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:38:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 4733 transitions. [2018-07-25 08:38:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:38:41,676 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:41,676 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:38:41,676 INFO L415 AbstractCegarLoop]: === Iteration 57 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:41,676 INFO L82 PathProgramCache]: Analyzing trace with hash 93784841, now seen corresponding path program 1 times [2018-07-25 08:38:41,676 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 08:38:41,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:41,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:41,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:38:41,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:38:41,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:38:41,684 INFO L87 Difference]: Start difference. First operand 2097 states and 4733 transitions. Second operand 10 states. [2018-07-25 08:38:45,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:45,455 INFO L93 Difference]: Finished difference Result 2943 states and 6561 transitions. [2018-07-25 08:38:45,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-25 08:38:45,455 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-07-25 08:38:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:45,459 INFO L225 Difference]: With dead ends: 2943 [2018-07-25 08:38:45,459 INFO L226 Difference]: Without dead ends: 2935 [2018-07-25 08:38:45,460 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:38:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2018-07-25 08:38:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2113. [2018-07-25 08:38:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2018-07-25 08:38:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 4769 transitions. [2018-07-25 08:38:48,119 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 4769 transitions. Word has length 20 [2018-07-25 08:38:48,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:48,119 INFO L472 AbstractCegarLoop]: Abstraction has 2113 states and 4769 transitions. [2018-07-25 08:38:48,119 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:38:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 4769 transitions. [2018-07-25 08:38:48,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:38:48,120 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:48,120 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] [2018-07-25 08:38:48,120 INFO L415 AbstractCegarLoop]: === Iteration 58 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:48,120 INFO L82 PathProgramCache]: Analyzing trace with hash 183366378, now seen corresponding path program 1 times [2018-07-25 08:38:48,120 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 08:38:48,131 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:48,131 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:38:48,131 INFO L451 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-25 08:38:48,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-25 08:38:48,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:38:48,132 INFO L87 Difference]: Start difference. First operand 2113 states and 4769 transitions. Second operand 10 states. [2018-07-25 08:38:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:52,105 INFO L93 Difference]: Finished difference Result 3095 states and 6879 transitions. [2018-07-25 08:38:52,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-25 08:38:52,105 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-07-25 08:38:52,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:52,108 INFO L225 Difference]: With dead ends: 3095 [2018-07-25 08:38:52,108 INFO L226 Difference]: Without dead ends: 3087 [2018-07-25 08:38:52,110 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=260, Invalid=1222, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:38:52,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2018-07-25 08:38:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 2233. [2018-07-25 08:38:54,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2233 states. [2018-07-25 08:38:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 5055 transitions. [2018-07-25 08:38:54,889 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 5055 transitions. Word has length 20 [2018-07-25 08:38:54,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:38:54,890 INFO L472 AbstractCegarLoop]: Abstraction has 2233 states and 5055 transitions. [2018-07-25 08:38:54,890 INFO L473 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-25 08:38:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 5055 transitions. [2018-07-25 08:38:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:38:54,891 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:38:54,891 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:38:54,891 INFO L415 AbstractCegarLoop]: === Iteration 59 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:38:54,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1435011527, now seen corresponding path program 1 times [2018-07-25 08:38:54,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:38:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:38:54,899 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 08:38:54,899 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:38:54,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:38:54,900 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:38:54,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:38:54,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:38:54,900 INFO L87 Difference]: Start difference. First operand 2233 states and 5055 transitions. Second operand 11 states. [2018-07-25 08:38:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:38:59,731 INFO L93 Difference]: Finished difference Result 3570 states and 7977 transitions. [2018-07-25 08:38:59,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-25 08:38:59,731 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 08:38:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:38:59,735 INFO L225 Difference]: With dead ends: 3570 [2018-07-25 08:38:59,735 INFO L226 Difference]: Without dead ends: 3562 [2018-07-25 08:38:59,736 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=291, Invalid=1601, Unknown=0, NotChecked=0, Total=1892 [2018-07-25 08:38:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2018-07-25 08:39:02,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 2257. [2018-07-25 08:39:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2018-07-25 08:39:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 5109 transitions. [2018-07-25 08:39:02,541 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 5109 transitions. Word has length 20 [2018-07-25 08:39:02,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:02,541 INFO L472 AbstractCegarLoop]: Abstraction has 2257 states and 5109 transitions. [2018-07-25 08:39:02,541 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:39:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 5109 transitions. [2018-07-25 08:39:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-25 08:39:02,542 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:02,542 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:39:02,542 INFO L415 AbstractCegarLoop]: === Iteration 60 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:02,543 INFO L82 PathProgramCache]: Analyzing trace with hash 777730375, now seen corresponding path program 1 times [2018-07-25 08:39:02,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:02,554 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 08:39:02,555 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:02,555 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:39:02,555 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:39:02,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:39:02,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:39:02,556 INFO L87 Difference]: Start difference. First operand 2257 states and 5109 transitions. Second operand 11 states. [2018-07-25 08:39:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:06,645 INFO L93 Difference]: Finished difference Result 2941 states and 6541 transitions. [2018-07-25 08:39:06,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-25 08:39:06,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-07-25 08:39:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:06,648 INFO L225 Difference]: With dead ends: 2941 [2018-07-25 08:39:06,648 INFO L226 Difference]: Without dead ends: 2933 [2018-07-25 08:39:06,649 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=258, Invalid=1224, Unknown=0, NotChecked=0, Total=1482 [2018-07-25 08:39:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2018-07-25 08:39:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 2372. [2018-07-25 08:39:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2372 states. [2018-07-25 08:39:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 5350 transitions. [2018-07-25 08:39:09,565 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 5350 transitions. Word has length 20 [2018-07-25 08:39:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:09,565 INFO L472 AbstractCegarLoop]: Abstraction has 2372 states and 5350 transitions. [2018-07-25 08:39:09,565 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:39:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 5350 transitions. [2018-07-25 08:39:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:39:09,566 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:09,566 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:39:09,567 INFO L415 AbstractCegarLoop]: === Iteration 61 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:09,567 INFO L82 PathProgramCache]: Analyzing trace with hash 371911669, now seen corresponding path program 1 times [2018-07-25 08:39:09,567 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:09,576 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 08:39:09,576 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:09,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-07-25 08:39:09,577 INFO L451 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-25 08:39:09,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-25 08:39:09,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-07-25 08:39:09,577 INFO L87 Difference]: Start difference. First operand 2372 states and 5350 transitions. Second operand 11 states. [2018-07-25 08:39:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:14,352 INFO L93 Difference]: Finished difference Result 3102 states and 6851 transitions. [2018-07-25 08:39:14,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-25 08:39:14,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2018-07-25 08:39:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:14,355 INFO L225 Difference]: With dead ends: 3102 [2018-07-25 08:39:14,356 INFO L226 Difference]: Without dead ends: 3094 [2018-07-25 08:39:14,356 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2018-07-25 08:39:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2018-07-25 08:39:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 2548. [2018-07-25 08:39:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2548 states. [2018-07-25 08:39:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 5732 transitions. [2018-07-25 08:39:17,710 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 5732 transitions. Word has length 21 [2018-07-25 08:39:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:17,710 INFO L472 AbstractCegarLoop]: Abstraction has 2548 states and 5732 transitions. [2018-07-25 08:39:17,710 INFO L473 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-25 08:39:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 5732 transitions. [2018-07-25 08:39:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-25 08:39:17,712 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:17,712 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:39:17,712 INFO L415 AbstractCegarLoop]: === Iteration 62 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:17,712 INFO L82 PathProgramCache]: Analyzing trace with hash -377266403, now seen corresponding path program 1 times [2018-07-25 08:39:17,712 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:39:17,720 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:17,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:39:17,720 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:39:17,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:39:17,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:39:17,721 INFO L87 Difference]: Start difference. First operand 2548 states and 5732 transitions. Second operand 9 states. [2018-07-25 08:39:27,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:27,478 INFO L93 Difference]: Finished difference Result 9530 states and 21497 transitions. [2018-07-25 08:39:27,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-25 08:39:27,478 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-07-25 08:39:27,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:27,487 INFO L225 Difference]: With dead ends: 9530 [2018-07-25 08:39:27,487 INFO L226 Difference]: Without dead ends: 7258 [2018-07-25 08:39:27,491 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2018-07-25 08:39:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7258 states. [2018-07-25 08:39:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7258 to 5099. [2018-07-25 08:39:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5099 states. [2018-07-25 08:39:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 11597 transitions. [2018-07-25 08:39:34,548 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 11597 transitions. Word has length 21 [2018-07-25 08:39:34,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:34,548 INFO L472 AbstractCegarLoop]: Abstraction has 5099 states and 11597 transitions. [2018-07-25 08:39:34,549 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:39:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 11597 transitions. [2018-07-25 08:39:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:39:34,551 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:34,551 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] [2018-07-25 08:39:34,552 INFO L415 AbstractCegarLoop]: === Iteration 63 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:34,552 INFO L82 PathProgramCache]: Analyzing trace with hash 504785992, now seen corresponding path program 1 times [2018-07-25 08:39:34,552 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:39:34,559 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:34,559 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:39:34,559 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:39:34,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:39:34,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:39:34,560 INFO L87 Difference]: Start difference. First operand 5099 states and 11597 transitions. Second operand 9 states. [2018-07-25 08:39:50,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:39:50,101 INFO L93 Difference]: Finished difference Result 13824 states and 31502 transitions. [2018-07-25 08:39:50,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 08:39:50,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-07-25 08:39:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:39:50,116 INFO L225 Difference]: With dead ends: 13824 [2018-07-25 08:39:50,116 INFO L226 Difference]: Without dead ends: 12174 [2018-07-25 08:39:50,122 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2018-07-25 08:39:50,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12174 states. [2018-07-25 08:39:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12174 to 7081. [2018-07-25 08:39:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7081 states. [2018-07-25 08:39:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 15893 transitions. [2018-07-25 08:39:59,795 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 15893 transitions. Word has length 24 [2018-07-25 08:39:59,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:39:59,795 INFO L472 AbstractCegarLoop]: Abstraction has 7081 states and 15893 transitions. [2018-07-25 08:39:59,795 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:39:59,795 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 15893 transitions. [2018-07-25 08:39:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:39:59,798 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:39:59,798 INFO L354 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-25 08:39:59,799 INFO L415 AbstractCegarLoop]: === Iteration 64 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:39:59,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1269424552, now seen corresponding path program 1 times [2018-07-25 08:39:59,799 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:39:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:39:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:39:59,807 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:39:59,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:39:59,807 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:39:59,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:39:59,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:39:59,808 INFO L87 Difference]: Start difference. First operand 7081 states and 15893 transitions. Second operand 9 states. [2018-07-25 08:40:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:40:15,122 INFO L93 Difference]: Finished difference Result 14557 states and 32575 transitions. [2018-07-25 08:40:15,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-25 08:40:15,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-07-25 08:40:15,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:40:15,136 INFO L225 Difference]: With dead ends: 14557 [2018-07-25 08:40:15,136 INFO L226 Difference]: Without dead ends: 12252 [2018-07-25 08:40:15,142 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2018-07-25 08:40:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12252 states. [2018-07-25 08:40:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12252 to 7165. [2018-07-25 08:40:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7165 states. [2018-07-25 08:40:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7165 states to 7165 states and 16147 transitions. [2018-07-25 08:40:24,983 INFO L78 Accepts]: Start accepts. Automaton has 7165 states and 16147 transitions. Word has length 24 [2018-07-25 08:40:24,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:40:24,983 INFO L472 AbstractCegarLoop]: Abstraction has 7165 states and 16147 transitions. [2018-07-25 08:40:24,983 INFO L473 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-25 08:40:24,983 INFO L276 IsEmpty]: Start isEmpty. Operand 7165 states and 16147 transitions. [2018-07-25 08:40:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-25 08:40:24,988 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:40:24,988 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, 1, 1] [2018-07-25 08:40:24,988 INFO L415 AbstractCegarLoop]: === Iteration 65 === [productErr0ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr9ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr10ASSERT_VIOLATIONASSERT, productErr7ASSERT_VIOLATIONASSERT, productErr8ASSERT_VIOLATIONASSERT, productErr13ASSERT_VIOLATIONASSERT, productErr11ASSERT_VIOLATIONASSERT, productErr12ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT, productErr6ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:40:24,988 INFO L82 PathProgramCache]: Analyzing trace with hash -277435291, now seen corresponding path program 1 times [2018-07-25 08:40:24,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:40:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:40:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:40:24,999 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:40:24,999 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-07-25 08:40:24,999 INFO L451 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-25 08:40:25,000 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-25 08:40:25,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 08:40:25,000 INFO L87 Difference]: Start difference. First operand 7165 states and 16147 transitions. Second operand 9 states. Received shutdown request... [2018-07-25 08:40:25,374 WARN L1010 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_product__local__threadpooling_end_1 c_product__local__threadpooling_i_0))) (and (<= c_product__local__threadpooling_end_0 (+ c_product__local__threadpooling_begin_0 c_product__global_workload)) (<= c_product__local__threadpooling_end_0 (+ c_product__local__threadpooling_i_0 c_product__global_workload)) (<= (+ c_product__local__threadpooling_end_0 c_product__local__threadpooling_begin_1 1.0) .cse0) (<= (+ c_product__local__threadpooling_end_0 c_product__local__threadpooling_i_1 1.0) .cse0))) is different from false [2018-07-25 08:40:25,376 WARN L1032 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_product__local__threadpooling_end_1 c_product__local__threadpooling_i_0))) (and (<= c_product__local__threadpooling_end_0 (+ c_product__local__threadpooling_begin_0 c_product__global_workload)) (<= c_product__local__threadpooling_end_0 (+ c_product__local__threadpooling_i_0 c_product__global_workload)) (<= (+ c_product__local__threadpooling_end_0 c_product__local__threadpooling_begin_1 1.0) .cse0) (<= (+ c_product__local__threadpooling_end_0 c_product__local__threadpooling_i_1 1.0) .cse0))) is different from true [2018-07-25 08:40:25,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-25 08:40:25,381 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 08:40:25,388 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 08:40:25,388 INFO L202 PluginConnector]: Adding new model threadpooling_out_Reals.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:40:25 BoogieIcfgContainer [2018-07-25 08:40:25,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:40:25,389 INFO L168 Benchmark]: Toolchain (without parser) took 252540.16 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. [2018-07-25 08:40:25,391 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:40:25,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:40:25,392 INFO L168 Benchmark]: Boogie Preprocessor took 68.65 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 08:40:25,392 INFO L168 Benchmark]: RCFGBuilder took 442.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:40:25,393 INFO L168 Benchmark]: TraceAbstraction took 251957.17 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 235.2 MB. Max. memory is 7.1 GB. [2018-07-25 08:40:25,397 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.65 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. * RCFGBuilder took 442.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251957.17 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 235.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 229]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 229). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 277]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 277). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 222]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 222). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 284]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 284). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 250]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 250). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 264]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 264). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 364]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 364). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 294]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 294). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 332]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 332). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 240]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 240). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 247]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 247). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 154). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 205]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 205). Cancelled while BasicCegarLoop was constructing difference of abstraction (7165states) and interpolant automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (118 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 14 error locations. TIMEOUT Result, 251.8s OverallTime, 65 OverallIterations, 2 TraceHistogramMax, 159.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17095 SDtfs, 51835 SDslu, 60188 SDs, 0 SdLazy, 123296 SolverSat, 11289 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 11.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1873 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1670 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11769 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7165occurred in iteration=64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 90.7s AutomataMinimizationTime, 64 MinimizatonAttempts, 43578 StatesRemovedByMinimization, 64 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1003 NumberOfCodeBlocks, 1003 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 938 ConstructedInterpolants, 0 QuantifiedInterpolants, 50035 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 65 InterpolantComputations, 35 PerfectInterpolantSequences, 39/124 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_out_Reals.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-40-25-413.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_out_Reals.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-40-25-413.csv Completed graceful shutdown